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TAFIRIAquatic ecosystems & BiodiversityA meeting framework for inclusive and sustainable science.
2020
To propose a new meeting format as a means to achieve greater inclusivity at reduced carbon footprint, and hence greater benefits relative to the aforementioned costs of international conferencesCompletedBern University, Switzeland and othersBlackman, R. C., Bruder, A., Burdon, F. J., Convey, P., Funk, W. C., Jähnig, S. C., Kishe, M. A., da Silva Moretti, M., Natugonza, V., Pawlowski, J., Stubbington, R., 4, Zhang, X., Seehausen, O., and Altermatt, F.,JournalThe ABCD format should not be restricted to Conferences, but can also be applied to working groups and research projects. These solutions are indeed urgently needed to find rapid science-based solutions for immediate problems, such as the current Covid-19 crisis, but also for more persistent problems, such as to bend the curve in the ongoing biodiversity crisis https://doi.org/10.1038/s41559-020-1190-x
TAFIRIClimate change & environmentMethane emission and sulphide levels increase in tropical seagrass sediments during temperature stress - a mesocosm study
2020
To determine the effects of temperature stress on methane emission and sulfide levels in tropical seagrass sediment, and whether these processes relate to the photosynthetic performance of seagrass plantsCompletedSwedish International Development Cooperation AgenGeorge, R., Gullstrom, M., Mtolera, S.P. Lyimo, T.J. & Bjork, MJournalReducing the impacts of local stressors on seagrass ecosystems would increase their carbon sequestration capacity under global warming https://onlinelibrary.wiley.com/doi/10.1002/ece3.6009
TAFIRIAquatic ecosystems & BiodiversityEnvironmental DNA-based xenomonitoring for determining Schistosoma presence in tropical freshwaters
2020
A xenomonitoring method that allows schistosome infections of host snail species to be determined from eDNA in water used to house those snails.CompletedSaudi Arabia Cultural Bureau in London and Prince Alzaylaee H, Collins RA, Rinaldi G, Shechonge A, Ngatunga B, Morgan ER, . Genner, MJJournalThis approach may be well-suited for epidemiological studies and monitoring in endemic areas, where it can assist schistosomiasis control by indicating infection risk from freshwaters and guiding necessary interventions to eliminate the disease. https://doi.org/10.1186/s13071-020-3941-6
TAFIRIAquatic ecosystems & BiodiversitySchistosoma species detection by environmental DNA assays in African freshwaters.
2020
Development of novel environmental DNA (eDNA) qPCR assays for the presence of the human-infecting species Schistosoma mansoni, S. haematobium and S. japonicum.CompletedSaudi Arabia Cultural Bureau in London and Prince Alzaylaee H, Collins RA, Rinaldi G, Shechonge A, Ngatunga B, Morgan ER, Genner, MJJournaleDNA monitoring is able to detect schistosomes in freshwater bodies, but refinement of the field sampling, storage and assay methods likely to optimise its performance .Results indicates that eDNA approaches could be considered as a tool for standard monitoring of parasite presence. https://doi. org/10.1371/journal.pntd.0008129
TAFIRIClimate change & environmentAssessment of ocean acidification (OA) conditions in key and spatially isolated ecosystems of Mnazi and Chwaka bays –Tanzania
2020
To characterize pH conditions (and associated drivers) within different coastal habitatsCompletedWIOMSARushingisha GeorgeTechnical Report1. Continue monitoring of pH levels and associated drivers. 2. Assessment of seagrass habitats’ potential to buffer the negative impacts of OA within bays.
TAFIRIAquatic ecosystems & BiodiversityEnvironmental DNA-based xenomonitoring for determining Schistosoma presence in tropical freshwaters (2020b).
2020
design a protocol that enables the Schistosome eDNA originating from cercariae shed by snail hosts to be concentrated prior to molecular testing.CompletedSaudi Arabia Cultural Bureau in London and Prince Nourah Bin Abdulrahman University, the Royal Society-Leverhulme Trust Africa Award AA130107, Global Challenges Research Fund pump priming projectAlzaylaee, H., Collins, R.A., Shechonge, A., Ngatunga, B.P., Morgan, E.R., Genner, M.J. (2020b)JournalThe study provides a strong indication that the surveillance method combining the utility of eDNA-based monitoring with the reliability of traditional xenomonitoring approaches could be used to accurately assay the presence of Schistosoma species in natural habitats. https://doi.org/10.1186/s13071-020-3941-6
TAFIRIAquatic ecosystems & BiodiversitySchistosoma species detection by environmental DNA assays in African freshwaters
2020
To develop the novel environmental DNA methods to detect human Schistosoma in freshwater bodies.CompletedEmbassy of the Kingdom of Saudi Arabia and Prince Nourah Bin Abdulrahman University; The Royal Society-Hind Alzaylaee,JournalEnvironmental DNA can be used as tool for detecting and monitoring schistosomes in freshwater bodies, and will be effective through refinement https://doi.org/10.1371/journal.pntd.0008129
TAFIRIAquatic ecosystems & BiodiversityNutrients Dynamics and Phytoplankton Compositiion in the Pangani Estuary, Tanzania
2020
Establish the nutrients levels, bahaviour, buget in the pangani estuary. Assess the phytoplankton composition and seaonality in the Pangani EstuaryCompletedSida-SareceSihaba Ramadhan MwaitegaPhD thesisMonitoring should be done on the contiuos basis. More study on estuary-river-ocean biogeochemistry Thesis at UDSM. Tanzania
TAFIRIAquatic ecosystems & BiodiversityGeophysical benthic habitat mapping in Lake Tanganyika (Tanzania): Implications for spatial planning of small-scale coastal protected areas
2020
To quantify the distribution of rocky nearshore habitats as candidate sites for small scale conservation areas using side scan sonarCompletedSociety of Exploration Geophysicists Geoscientists without borders programLucas, J.S., McGlue, M.M., Kimirei, I.A., Soreghan, M.J., Mbonde, A., Yeager, K.M., Limbu, P., Apse, C., McIntyre, P.B.JournalThe spatial organization of rocky substrates is interpreted to be controlled by basin structure and lake level history; these habitats make ideal targets for establishing new small-scale protected areas. https://doi.org/10.1016/j.jglr.2020.01.010.
TAFIRICapture fishery Productive Performance of the Lake Victoria Fishing Fleet
2020
collecting fishing vessel inputs and outputs based on CASSOPs for Lake Victoria. In progressUnited National University-Fisheries Training Program (UNU-FTP), NaFIRRI and LVFO Veronica Mpomwenda and Sophia ShabanPhD thesisNeed of more research on this area is essential in order to assess the effective capacity of fishing vessels, inputs and output in Lake Victoria
TAFIRICapture fishery Adaptive capacity and coping strategies of small-scale coastal fisheries to declining fish catches: Insights from Tanzanian communities
2020
To determine adaptive capacity and coping strategies of small-scale fishers of TanzaniaCompletedThe Sida Bilateral Marine Science Program between Silas, Mathew O. Mgeleka, Said S. Polte, Patrick Sköld, Mattias Lindborg, Regina de la Torre-Castro, Maricela Gullström, MartinJournalManagement options to build livelihood flexibility need to involve fishers in decision making for a sustainable fishery https://doi.org/10.1016/j.envsci.2020.03.012
TAFIRIAquacultureGenetic Diversity Among Tilapia Species Farmed at Chita in Kilombero, Morogoro Region, Tanzania
2020
Determination of Genetic Diversity Among Tilapia Species Farmed at Chita in Kilombero, Morogoro Region, TanzaniaCompletedTanzania Commission for Science and Technology (COSTECH)Mndeme, M., Shoko, A. P., Limbu, S. M. and Mwita, C. J. JournalSuccessful aquaculture development in Tanzania requires well-managed and effective fish breeding programs for production of good quality fingerlings through fish genetic resources management. https://www.ajol.info/index.php/tjs/article/view/194814
TAFIRIStock Assessment & Fisheries StatisticsAutomated classification of schools of the silver cyprinid Rastrineobola argentea in Lake Victoria acoustic survey data using random forests
2020
The objective of this study was to develop a robust, automated method to identify echoes from dagaa schools in echosounder data collected during Lake Victoria fish stock assessment surveys. CompletedGCRF, Royal Society International Collaboration Award Proud, R., Mangeni-Sande, R., Kayanda, R. J., Cox, M. J., Nyamweya, C., Ongore, C., Natugonza, V., Everson, I., Elison, M., Hobbs, L., Kashindye, B. B., Mlaponi, E. W., Taabu-Munyaho, A., Mwainge, V. M., Kagoya, E., Pegado, A., Nduwayesu, E., and Brierley, A. SJournalAutomated data analysis is needed in studies on spatial and temporal variability in species distributions aimed at improving ecosystem-based management of Lake Victoria fisheries, which will ensure a sustainable economy and food security in East Africa. https://academic.oup.com/icesjms/advance-article/doi/10.1093/icesjms/fsaa052/5835268
TAFIRIAquacultureFish farming in Tanzania: the availability and nutritive value of local feed ingredients.
2020
To gather baseline data on locally available feed ingredients and fish farming practices in different regions of TanzaniaCompletedBilateral Marine Science Programme supported by SidaMmanda FP, Mulokozi DP, Lindberg JE, Haldén AN, Mtolera M, Kitula R, and Lundh T JournalMore than 80% of respondents relied on locally available feed ingredients as a major feed supplement for their cultured fish, with maize bran being the most commonly used feed ingredient in all regions https://www.tandfonline.com/doi/full/10.1080/10454438.2019.1708836
TAFIRIAquacultureRural aquaculture: Assessment of its contribution to household income and farmers’ perception in selected districts, Tanzania, Aquaculture Economics & Management, DOI: 10.1080/13657305.2020.1725687
2020
To examined the contribution of rural fish farming to local farmers’ household income and investigate farmers’ perceptions, opportunities, and constraints towards fish farming in six districts of TanzaniaCompletedBilateral Marine Science Programme supported by SidaMulokozi DP, Mmanda FP, Onyango P, Torbjörn L, Tamatamah R and Berg HJournalMuch higher aquaculture contribution towards rural development could be obtained if appropriate measures are taken. https://www.tandfonline.com/doi/full/10.1080/13657305.2020.1725687
TAFIRIAquatic ecosystems & BiodiversityHuman-induced changes of Lake Victoria fisheries and ecology
2020
This paper examines fisheries and ecological changes against the backdrop of major anthropogenic events in and around Lake Victoria since the turn of the 20th centuryCompletedLake Victoria Fisheries Organization (LVFO) Nyamweya, C.S, Natugonza, V., Taabu-Munyaho, A., Aura, C.M., Njiru, J. M., Ongore, C., Mangeni-Sande, R., Kashindye, B. B., Odoli , C. O., Ogari , Z., Kayanda, R.JournalFishing crafts (of various propulsion modes) and beach/boat seines are the only parameters that significantly affect fish catches, and should be the focus of fishing effort regulation in Lake VIctoria https://doi.org/10.1016/j.fishres.2020.105564
TAFIRIFish quality and processingReduction of Post-Harvest Loss of Tuna and Tuna-Like Species through Value Addition to Improve Food Security in Tanzania
2020
xvi) To promote value addition and sustainable utilization, and reduction of post-harvest losses of tuna and tuna-like species along the product value chain for improved livelihoods.In progressDSFAMary A. KisheProjectsIn-progress
TAFIRIClimate change & environmentIdentification, characterization and vulnerability assessment of benthic ecosystems in the WIO
2019
To describe, model and map continental shelf and upper slope seabed habitats and their benthic communities in the western part of the Western Indian Ocean (WIO), in order to assist with regional marine spatial planning. The term benthic encompasses organisms which are closely associated with the seabed i.e. are on, in or just above the seabedIn progressWIOMSAMary A. KisheProjectsIn-progress
TAFIRIAquacultureIntegrated aquaculture system (seaweeds and marine fish): A hub for food and income generation to the coastal communities in Tanzania
2019
This study aims at developing a cost-effective and environmentally friendly technique for integrating commercially important seaweed and fishes to provide information that allows maximum utilization of available seaweed farming potentials to increase food production, income and employment to seaweed farmers.In progressCOSTECHKuguru Baraka, Ngoile Magnus, Shoko Amon, Kangwe Juma, , Silas Mathew, Matiku Patroba, ProjectsThe innovation is geared towards helping seaweed famer to maximize income, food and employment through harvesting both seaweed and fish.
TAFIRIAquatic ecosystems & BiodiversityPatterns of genomic differentiation between two Lake Victoria cichlid species, Haplochromis pyrrhocephalus and H. sp. ‘macula’
2019
To determine the level of genetic differentiation between closely related speciesCompletedKAKENHI Grant No. JP23570269 and JP26440209, and SShohei Takuno, Ryutaro Miyagi, Jun-ichi Onami, Shiho Takahashi-Kariyazono, Akie Sato5, Herbert Tichy, Masato Nikaido, Mitsuto Aibara, Shinji Mizoiri, Hillary D. J. Mrosso, Semvua I. Mzighani, Norihiro Okada and Yohey TeraiJournalLake Victoria water clarity needs to be improved by reducing inflowing nutrients and suspended solids to facilitate visual mediated mate choice. The two species in this study represent a large number of closely related species in the lake which depend on color perception for mate choice. https://doi.org/10.1186/s12862-019-1387-2
TAFIRIClimate change & environmentEstimation of a whole plant Q10 to assess seagrass productivity during temperature shifts
2019
To establish how the gas exchange of seagrass tissues at various maturity stages would respond over a broad range of temperaturesCompletedSwedish International Development Cooperation AgenRasmusson, L. M., Gullström, M., Gunnarsson, P. C., George, R., & Björk, M.JournalPlant tissue age and temperature should be considered when assessing and modelling carbon and oxygen fluctuations in vegetated coastal areas https://doi.org/10.1038/s41598-019-49184-z
FOREIGN INSTITUTIONClimate change & environmentSeagrasses in warming oceans: physiological and biogeochemical responses
2019
To understand: 1) the responses of key physiological processes to elevated temperatures occurring frequently (and likely to occur in a future warming scenario) in seagrass meadows, and how these will affect biogeochemical processes in associated sediments, 2) the exchange of carbon dioxide between seagrass, water and atmosphere, and 3) effects of the tidal variability on biogeochemical processes of tropical seagrass sedimentsCompletedSwedish International Development Cooperation AgenRushingisha GeorgePhD thesisThe effect of ocean warming must be considered in the light of multiple, interactive factors that may accumulate and interact over time to produce complex impacts on seagrass ecosystems http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1302283&dswid=9038
TAFIRIFisheries EcologyThe tapeworm Ligula intestinalis alters the behavior of the fish intermediate host Engraulicypris sardella, but only after it has become infective to the final host.
2019
To investigate the effects of L. intestinalis on its intermediate fish host Engraulicypris sardella by examining three different behavioral traits namely predation avoidance, swimming activity and depth preference. Completed(i) University of Bergen, Norway (ii) Norwegian State Education Loan Fund (Lånekassen)Nestory P. Gabagambi, Anne-Gro V. Salvanes, Frank Midtøy, Arne SkorpingJournalFurther studies are needed to understand the host-parasite interaction in this lake https://doi.org/10.1016/j.beproc.2018.11.002
TAFIRICapture fishery The status and distribution of freshwater fishes in the Lake Malawi/Nyasa/Niassa Catchment
2019
LMNN is vulnerable to threats, such as unsustainable use of natural resources and invasive alien species, which could have significant and rapid negative effects on its biodiversity and the consequences of which could be irreversible.CompletedJRS Biodiversity Foundation (www.jrsbiodiversity.oKanyerere, G.Z., Phiri, T.B., Sayer, C.A., Shechonge, A., Snoeks, J. and Tweddle, D.Book Chaptera system for monitoring the collection and export of fishes for the ornamental trade be devised to ensure there is no over-collection, in particular for many of the highly restricted range species that are highly popular in the aquarium https://doi.org/10.2305/IUCN.CH.2019.RA.1.en
TAFIRICapture fishery Population genetic evidence for a unique resource of Nile tilapia in Lake Tanganyika, East Africa
2019
Investigated the population genetic structure of Nile tilapia across Tanzania using nuclear microsatellite markers, and compared the head and body morphology of populations using geometric morphometric analyseCompletedRoyal Society- Leverhulme Trust Africa Awards AA10Shechonge, A., Ngatunga, B.P., Bradbeer, S.J., Ford, A.G.P., Smith, A.M., Tamatamah, R., Sweke, E.A., Turner, G.F. & Genner, M.J. JournalLake Tanganyika population of Nile tilapia represents a unique genetic resource within the country. Nile tilapia aquaculture within the Lake Tanganyika catchment should be restricted to the indigenous strain. https://doi.org/10.1007/s10641-019-00895-2
TAFIRICapture fishery Molecular phylogeny of Oreochromis (Cichlidae: Oreochromini) reveals mito-nuclear discordance and multiple colonisation of adverse aquatic environments
2019
Examine the taxonomic status of the genus Alcolapia to test whether Alcolapia and Oreochromis are reciprocally monophyleticCompletedSystematics Research Fund, the Genetics Society HeAntonia G.P.Ford., Thomas R.Bullen ., LongsonPang ., Martin J.Genner.,RogerBills.,TomášFlouri.,Benjamin P.Ngatunga., LukasRüber., Ulrich K.Schliewen., OleSeehausen., AsilatuShechonge., Melanie L.J.Stiassny., George F.Turner & Julia J.Day JournalAdaptation to adverse conditions (elevated salinity, temperature, or alkalinity) has occurred multiple times within Oreochromis, but that adaptation to extreme (soda) conditions (high salinity, temperature, and alkalinity) has likely arisen once in the lineage leading to O. amphimelas and Alcolapia. We also show Alcolapia is nested within Oreochromis, which is in agreement with previous studies, and here revise the taxonomy to synonymise the genus in Oreochromis, retaining the designation as subgenus Oreochromis (Alcolapia). https://doi.org/10.1016/j.ympev.2019.04.008
TAFIRICapture fishery Widespread colonization of Tanzanian catchments by introduced Oreochromis tilapia fishes: the legacy from decades of deliberate introduction
2019
Survey inland water bodies across Tanzania between 2011 and 2017 to clarify distributions of tilapiine cichlids of the genus Oreochromis. Develope models of suitable habitat for the introduced species based on recent (1960–1990) and projected (2050, 2070) East African climate.CompletedRoyal Society-Leverhulme Trust Africa Awards AA100Shechonge, A., Ngatunga, B.P., Bradbeer, S.J., Day, J.J., Freer, J.J., Ford, A.G.P., Kihedu, J., Richmond, T., Mzighani,S., Smith, A.M., Sweke, E.A., Tamatamah, R., Tyers, A., Turner, G.F. & Genner, M.J.JournalPresence of suitable habitat for these introduced species will persist and potentially expand across the region. The clarification of distributions provided here can help inform the monitoring and management of biodiversity, and inform policy related to the future role of introduced species in fisheries and aquaculture https://doi.org/10.1007/s10750-018-3597-9
TAFIRIAquacultureThe extent of cage aquaculture, adherence to best practices and reflections for sustainable aquaculture on African inland waters.
2019
The undertake a review of the extent of cage aquaculture, adherence to best practices and reflections for sustainable aquaculture on African inland watersCompletedAfrican Great Lakes Conservation Fund administered by The Nature Conservancy with funding from John D. and Catherine T. MacArthur FoundationMusinguzi, L., Lugya, J., Rwezawula, P., Kamya, A., Nuwahereza, C., Halafo, J., Kamondo, S., Njaya, F., Aura, C., Shoko, A. P.JournalCage aquaculture is qualified as an additional stressor to the African inland waters and because it is expected to continue expanding, thus, adherence to best practices should be promoted for sustainability. https://www.sciencedirect.com/science/article/abs/pii/S0380133019301728
UDSMAquacultureCommunity based aquaculture in the western Indian Ocean: challenges and opportunities for developing sustainable coastal livelihoods
2019
to identify the main challenges faced by CBA projects in the WIO and to provide useful information for promoting profitable and sustainable CBACompletedWestern Indian Ocean Marine Science Association (WMebrahtu Ateweberhan (2018)JournalAddressing the challenges faced in building strategic development initiatives around aquaculture in developing countries. 10.5751/ES-10411-230417
UDSMAquatic ecosystems & BiodiversityEstuaries: A Lifeline of Ecosystem Services in the Western Indian Ocean
2019
To display some of the important scientific work that has been, and is being, undertaken by scientists from the WIO region and beyondCompletedUNEPSalif DiopJournalThe need to constitute and support viable centers, such as WIOMSA (West Indian Ocean Marine Science Association), in maintaining the necessary systems and networks for quality information exchange to allow for better informed decision-making, including their linkages with other regions of the African continent. https://link.springer.com/content/pdf/10.1007/978-3-319-25370-1.pdf
TAFIRISocio-economics & MarketingThe Relationship Between Initial Public Offering and Firm Performance: A Research on Borsa Istanbul (BIST)
2019
The aim of this study is to examine the relationship between initial public offering (IPO) and firm performances of the firms operating in TurkeyCompletedUniversity of Istanbul, social science instituteFenant Laurent MHAGAMA, Mehmet Sabri TOPAK JournalBased on the research results, it is recommended that investors considering investing in the IPO process should reach a decision considering that the firm performance will be low in the IPO year and the first year after IPO compared to the pre- IPO year. Otherwise, the cost of the investment in the IPO process will be higher than the actual (theoretical) value of the stock. http://dx.doi.org/10.17336/igusbd.616838
UDSMAquatic ecosystems & BiodiversityNatural recovery of mangroves in abandoned rice farming areas of the Rufiji Delta, Tanzania
2019
to assess the pattern of natural recovery on the abandoned rice farms and how successive transitions back to mangrove stands takes placeCompletedWIOMSAEmmanuel JaphetPhD thesisRestoration is needed in the abandoned rice farm https://www.ajol.info/index.php/wiojms/article/view/180951
TAFIRIAquatic ecosystems & BiodiversityMorphology, phylogeny, and taxonomy of two species of colonial volvocine green algae from Lake Victoria, Tanzania
2019
To identify, characterize and classify the morphology, phylogeny and taxonomy of two species of colonie volvocine green algae from Lake VictoriaCompletedGrant in Aid for Scientific Research from the Ministry of Education, culture, sports, science and technology and Japan Society for the Promotion of ScienceNozaki, H., Matsuzaki R., Kashindye, B, B., Ezekiel C, N., Shaban, S., Kawachi, M., Mitsuto, A., Masato, NJournalFurther detailed studies for taxonomic system for the species of Eudorina related to E. compacta still needed https://doi.org/10.1371/journal.pone.0224269
UDSMAquaculturePopulation Structure and Genetic Diversity of Nile Tilapia (Oreochromis niloticus) Strains Cultured in Tanzania.
2019
To investigate the population genetic structure of seven Nile tilapia populations from TanzaniaCompletedSida, WIOMSA,Redempta Athanas Kajungiro (2019)PhD thesisThere are unique tilapia species in Tanzania that must be protected and preserved https://doi.org/10.3389/fgene.2019.01269
UDSMAquacultureThe Need of a Structured Tilapia Breeding Program in Tanzania to Enhance Aquaculture Production: A Review
2019
To outline Tilapia breeding programs in Tanzania CompletedSidaRedempta Athanas Kajungiro (2019)JournalThe need for a structured sustainable Tilapia breeding program with bio secured and reliable hatcheries https://www.ajol.info/index.php/tjs/article/view/191184
TAFIRIAquatic ecosystems & BiodiversityOrganic matter sources and trophic interactions among fish species in Pangani Estuary, Tanzania
2019
To study sources of OM and Trophic linkage to dominant marine fish species occupying different trophic positions along the Pangani estuarine food webs by using stable 813C and 815N isotopes, FA biomarkers and trophic flow modellingCompletedCOSTECHAlistidia P. MwijagePhD thesisDamming and irrigation activities in the upstream of the catchment contributed to modify the quality and quantity of freshwater discharge into the Pangani estuary adequately to threaten the structure and function of the ecosystem, thus, the management strategies should be strengthened in order to avoid escalating such negative impacts in the adjoining coastal ecosystem University of Da es Salaam
TAFIRIFish biology Invasion of the tapeworm Ligula intestinalis in the Usipa fishery in Lake Malawi/ Niassa/ Nyasa
2019
To determine how the invasion of the tapeworm Ligula intestinalis in Lake Nyasa affected the food security and nutrition Completed(i) University of Bergen, Norway (ii) Norwegian State Education Loan Fund (Lånekassen)Nestory Peter Gabagambi; Arne SkorpingJournalIt is important to have more, longer and wide-covering biological control measures that will help us to understand the ecology, dynamics and life-style of this tapeworm and its potential impacts on the productivity of Usipa in Lake Nyasa. http://www.fao.org/documents/card/en/c/CA4151EN/
UDSMAquatic ecosystems & BiodiversityTesting the performance of environmental DNA metabarcoding for surveying highly diverse tropical fish communities: A case study from Lake Tanganyika. Environmental DNA
2019
To address this, we applied an eDNA metabarcoding approach to survey Lake Tanganyikas (LT) species rich littoral fish communities.CompletedNatural Environment Research Council Genetics Society Heredity Fieldwork Grant (CJD); Systematics Research Fund (CJD); Fisheries Society of the British Isle Small Research Grant (CJD); Percy Sladen Memorial Trust Fund (JJD); the NERC Bimolecular Analysis Facility Sheffield (CJD and JJD); European Research Council (ERC; CoG CICHLID ~ X) (WS); and the Swiss National Science Foundation (WS).Christopher J. Doble JournalThere is a need to apply eDNA metabarcoding across a broad range of ecosystems and communities.
UDSMAquacultureThe Need of a Structured Tilapia Breeding Program in Tanzania to Enhance Aquaculture Production: A Review.
2019
To improve aquaculture production in the TanzaniaCompletedAgriFose2030 and SidaKajungiro, R., Mapenzi, L., Nyinondi, C., Haldén, A. N., Mmochi, A., Chacha, M., ... & de Koning, D. J.JournalThere is a need for a structured sustainable Tilapia breeding program with bio secured and reliable hatcheries to enhance aquaculture production in Tanzania https://www.ajol.info/index.php/tjs/article/view/191184
TAFIRICapture fishery The neglected role of religion in fisheries management
2019
To assess how important is religion to fishers on Lake Tanganyika, how do fishers use religion to influence fishing outcomes and how does religion affect the relationship between fishers and management.CompletedNational Science Foundation, Grant_Award Number _ DGE_1842473. University of FloridaB.S. Lowe, S.K. Jacobson, H. Anold, A.S. Mbonde and K. Lorenze JournalBetter understanding and accounting for religious dimensions is critical for engaging with fishery stakeholders more effectively and managing global fisheries more sustainably DOI:10.1111/faf.12388
TAFIRICapture fishery Adapting to change in inland fisheries: analysis from Lake Tanganyika, East Africa
2019
To assess how do fishers intend to adapt their fishing pressure to a hypothetical 50% decline in catch, how do the three TPB (Theory of Planned Behavior) factors predict fishers’ adaptation intentions and what external factors predict adaptation intentions, either directly or indirectly with the TPB factorsCompletedNational Science Foundation Graduate Research Fellowship under grant no. DGE_ 1842473; the University of Florida of Foreign Affairs_DANIDAB.S. Lowe, S.K. Jacobson, H. Anold, A.S. Mbonde and C.M. O’Reilly JournalThe finding highlight the importance of fostering regional adaptation strategies that increase primary livelihood alternatives and capital outside the fishery, while discouraging investment in adaptations focused on increasing catch amount or fishing income https://doi.org/10.1007/s10113-019-01516-5
TAFIRIAquatic ecosystems & BiodiversityMorphology, phylogeny, and taxonomy of two species of colonial volvocine green algae from Lake Victoria, Tanzania
2019
To identify, characterize and classify the morphology, phylogeny and taxonomy of two species of colonie volvocine green algae from Lake Victoria.CompletedGrant in Aid for Scientific Research from the Ministry of Education, culture, sports, science and technology and Japan Society for the Promotion of Science.Nozaki, H., Matsuzaki R., Kashindye, B, B., Ezekiel C, N., Shaban, S., Kawachi, M., Mitsuto, A., Masato, NJournalThe paper classifies the two species of volvocine green algae in Lake Victoria https://doi.org/10.1371/journal.pone.0224269.
TAFIRICapture fishery Rapid Assessment of Fish Stock Status and Ecosystem Health of Lake Rukwa, Tanzania
2019
To assess the status of fish and fishery as well as the ecosystem health of Lake Rukwa.CompletedUnited Republic of TanzaniaKishe, M. A., Ngatunga, B. P., Mshana, G., Sekadende, B. C. and Shayo,S. D.Technical ReportEnforce existing fisheries regulations to stop illegal fishing practices while conserving critical habitats for various fish species
TAFIRIAquatic ecosystems & BiodiversityMorphology, phylogeny, and taxonomy of two species of colonial volvocine green algae from Lake Victoria, Tanzania.
2019
To identify, characterize and classify the morphology, phylogeny and taxonomy of two species of colonie volvocine green algae from Lake Victoria. CompletedGrant in Aid for Scientific Research from the Ministry of Education, culture, sports, science and technology and Japan Society for the Promotion of Science.Nozaki, H., Matsuzaki R., Kashindye, B, B., Ezekiel C, N., Shaban, S., Kawachi, M., Mitsuto, A., Masato, N.JournalFurther detailed studies will construct a more natural taxonomic system for the species of Eudorina related to E. compacta https://doi.org/10.1371/journal.pone.0224269.
TAFIRIFish biology Prevalence of Nematodes(anisakis nematodes) and zoonotic bacteria in Trichiurus lepturus an allegation for human health concern, in western Indian Ocean, Tanzania.
2019
1. To examine the level of bacteria associated with zoonotic diseases (Mycobacterium marinum, Streptococcus iniae, Vibrio vulnificus and Edwardsiela tarda) in Trichiurus lepturus in selected landing sites in Dar es Salaam and Kilwa 2. To determine and establish the prevalence and levels of parasitic infestation of the genus Anisakis in Trichiurus lepturus in selected landing sites in Dar es Salaam and Kilwa 3. To examine the effectiveness of antimicrobial drugs on the isolated parasites and bacteria 4. To assess fish handling practices that might be a potential cause of zoonotic pathogen transmission in selected landing sites. 5. To investigate cases of food poisoning and human illness related to consumption of infected T. lepturus 6. To investigate community’s awareness, altitude and perception on fish contamination, infected and/or poisoning and suggest precaution and management options to prevent and overcome zoonotic infections in the study areas.In progressWIOMSASophia ShabanProjectsUnderstanding fish health status is important for sustainability of aquatic resources.
TAFIRIFish biology Morphology characterization, DNA barcoding and Genetic diversity of some selected anchovy and sardine marine fish species in Tanzania.
2019
To investigate diversity of Encrasicholina devisi, Encrasicholina punctifer, Stolephorus commersonii and Amblygaster sirm marine fish species of Tanzanian coastal waters by using morphological and molecular approachesIn progressWIOMSA-MARG1Fabiani, G and Chauka, LProjectsSpecies of anchovies, all of which are members of the Engraulidae family, while sardines are belonged by Clupeidae family. More confirmation will be detailed up on completion of the project https://www.tafiri.go.tz
TAFIRIAquacultureThe role of fish-poultry integration on fish growth performance, yields and economic benefits among smallholder farmers
2019
Investigating the role of fish-poultry integration on fish growth performance, yields and economic benefits among smallholder farmersCompletedTanzania Commission for Science and Technology (COSTECH)Shoko, A. P., Limbu, S. M., Lamtane, H. A., Kishe-Machumu, M. A., Sekadende, B., Ulotu, E. E., Masanja, J. C., and Mgaya, Y. D. JournalRural smallholder farmers can achieve higher growth rate, farm net yields and income by integrating all male O. niloticus with other on-farm activities than practising a stand-alone fish culture system. https://www.tandfonline.com/doi/abs/10.2989/16085914.2018.1555512
TAFIRIFish biology Assessment of the impacts of artisanal fishing gears on nearshore fish stocks along coastal waters off the Kilwa–Mafia seascape in Tanzania
2019
To address the gap related to catch composition and levels of depletion of different fish species based on the use of three artisanal fishing gears (handlines, gillnets, and traps) within the Kilwa–Mafia seascape in the coastal waters of southern Tanzania.CompletedWorld Bank- MACEMP PROJECTChande M., Kimirei I.A., Igulu M.M., Kuguru B., Kayanda R., Mwakosya C., Kangwe S.J., Sululu J. & Ulotu E JournalThis study calls for specific and targeted management measures to be put in place as most of the dominant species caught using sampled gears were found to be at high risk of depletion. https://doi.org/10.1016/j.rsma.2019.100531
TAFIRICapture fishery Adoption and consequences of new light-fishing technology (LEDs) on Lake Tanganyika, East Africa
2019
This study aimed to understand factors that influence the adoption of new LED lighting technology and 2) to determine whether LED systems influence overall fish catch and composition.CompletedTUUNGANE Project/TNCHuruma Fredrick MganaJournalinformation about technological innovations be included as part of monitoring the fishery to facilitate determining the influence of environmental change relative to technological innovation for the future of the fishery. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6805052/
TAFIRIFish biology Dietary differences among commercially important fishes in Lake Tanganyika assessed using stable isotope analysis
2019
To determine the diet of the three commercially important fish species.CompletedDANIDAJessen, H.HJournalthe lake has a short food chain linking primary production to caught fish, possibly contributing to the large fishery yields, as well as supporting stratification stabilization and declining primary productivity as a potential driver of CPUE decline. Fish larvae appear to be a major food item, as well as the fact that these also grow to be mature fish, underlines the importance of managing to preserve them. https://link.springer.com/article/10.1007/s11356-018-1389-4
TAFIRIAquacultureGrowth performance of Tilapia sparmanni fed on formulated chicken feeds.
2019
To suggest suitable diet for farmed Tilapia sparmanni CompletedThe University of Dar es salaamNsinda Philemon and Tamatamah Rashid JournalDiet type one that has high amount of protein contents promoted rapid growth of Tilapia sparmanni than diet type two which had high lipids and diet type three with high amount of carbohydrates http://dx.doi.org/10.17352/2455-8400.000048.
UDSMClimate change & environmentMeasuring mangrove carbon loss and gain in deltas.
2019
This study detemines the significance of the natural dynamics of erosion and sedimentation on carbon loss and sequestration potential for mangroves over timeCompletedNASA Carbon Monitoring Systems ProgramLagomasino, D., Fatoyinbo, T., Lee, S., Feliciano, E., Trettin, C., Shapiro, A., & Mangora, M. M.JournalAreas of naturally regenerating mangroves will have a much larger carbon sequestration potential if the rate of mangrove deforestation of taller forests is curbed. https://iopscience.iop.org/article/10.1088/1748-9326/aaf0de/meta
TAFIRIAquacultureBiomass production and growth performance of Momela Lake’s spirulina (Arthrospira fusiformis) cultured under urea and N: P: K fertilizers as cheaper nitrogen sources. Int. J. Biol. Chem. Sci. 13(2): 861-869.
2019
To investigate the two culture media with agricultural fertilizers (Urea and NPK) as nitrogen sources on production of a locally available spirulina species CompletedBilateral Marine Science Programme supported by SidaDeogratias Mulokozi, Matern Mtolera and Avit MmochiJournalUrea could be a good nitrogen source in production of spirulina https://www.ajol.info/index.php/ijbcs/article/view/189342
TAFIRIAquacultureSpirulina (Arthrospira fusiformis) as a potential protein source in practical diets for fry mariculture of Rufiji tilapia (Oreochromis urolepis urolepis) WIO Journal of Marine Science 18 (2) 57-67.
2019
Investigate the effects on growth performance, feed utilization, survival and whole fish body proximate composition of replacing fishmeal (Rastrineobola argentea) with a locally available spirulina species (Arthrospira fusiformis) as a protein ingredient in the feed of Rufiji tilapiaCompletedBilateral Marine Science Programme supported by SidaDeogratias Mulokozi, Matern Mtolera and Avit MmochiJournalMomella Lake spirulina may be an appropriate growth-stimulating plant protein when used as a feed additive in Rufiji tilapia mariculture. https://www.ajol.info/index.php/wiojms/article/view/183911
UDSMCapture fishery Biogeography, diversity and conservation of tilapia genetic resources in Tanzanian watersheds
2019
To map distributions of Oreochromis species in Tanzania, assess the relative importance of environmental variables in structuring their biodiversity, and generate ecological niche models of non-native species to assess future geographic spread. ii. To establish the extent of hybridization between non-native and native Oreochromis species at multiple locations and determine if hybrids are readily identifiable from genetics and morphology. iii. To test for population-level genetic differences between the Lake Tanganyika population of Nile tilapia and populations introduced into proximate catchments in Tanzania. iv. To establish the extent of dietary resource use overlap between native and non-native Oreochromis species, test for niche differences among them and explore the potential for competition. v. To determine the growth rate of native and non-native Oreochromis species and their hybrids, within a fished impoundment.CompletedRoyal Society - Leverhulme Trust Africa Awards (AA100023 and AA130107) awarded to Prof. Martin Genner, Dr Benjamin Ngatunga and Prof. George Turner.ASILATU HANISI SHECHONGEPhD thesisLarge bodied species in major catchments can be tested for suitability for cage and pond culture (may have benefits over Nile tilapia, and certainly would over the smaller blue lipped tilapia) • Stop stocking of other tilapia in natural water bodies in Tanzania which already contain native tilapia species • Distribute hatchery validated juvenile fish to avoid contamination • Promote zoned aquaculture • Promote fish identification skills among fisheries experts • Conserve genetic diversity of native species
TAFIRIFish biology Molecular phylogeny of Oreochromis (Cichlidae: Oreochromini) reveals mito-nuclear discordance and multiple colonisation of adverse aquatic environments (2019)
2019
To examine the taxonomic status of the genus Alcolapia to test whether Alcolapia and Oreochromis are reciprocally monophyletic.CompletedSystematics Research Fund, the Genetics Society Heredity Fieldwork grant, and UCL Graduate scholarship (AGPF); BBSRC/NERC SYNTAX award (JJD); Royal Society Leverhulme Trust Africa AwardFord, A.G.P., Bullen, T.R., Pang, L., Genner, M.J., Bills, R., Flouri, T., Ngatunga, B.P., Rüber, L., Schliewen, U.K., Seehausen, O., Shechonge, A., Stiassny, M.L.J., Turner, G.F., Day, J.J.JournalA study proposed the taxonomic revision of the genus Alcolapia to be conducted. https://doi.org/10.1016/j.ympev.2019.04.008
TAFIRIAquacultureAssessment of the effects of Aspilia mossambicensis and Azadirachta indica in controlling prolific breeding in farmed Nile tilapia (Oreochromis niloticusLinnaeus, 1758) (2019)
2019
To evaluate suitability of Aspilia mossambicensis and Azadirachta indica leaf powders in controlling prolific breeding of farmed Nile tilapia.CompletedUnited Republic of Tanzania through the Tanzania Commission for Science and Technology (COSTECH)Imani B. KapingaJournalThe study recommended further studies (i) to explore higher doses of A. mossambicensis and A. indica leaf powders that can completely inhibit reproduction performance of O. niloticus and produce higher percentage (> 90%) of males (ii) to experiment effectiveness of pure phytocompounds (alkaloids and flavonoids) of A. mossambicensis and A. indica on the reproductive performance and sex ratio of O. niloticus. • Library – University of Dar es Salaam
TAFIRIAquatic ecosystems & BiodiversityMicrohabitat preferences of fish assemblages in the Udzungwa Mountains (Eastern Africa) (2019)
2019
To (a) investigate the habitat preferences of the entire fish assemblage and (b) provide a better knowledge about species specific habitat preferences of riverine fishes of Africa with special emphasis in environmental flow assessment (EFSs) studiesCompletedUnited States Agency for International Development (USAID) as part of the Technical Assistance to Support the Development of Irrigation and Rural Roads Infrastructure Project (IRRIP2), implemented by CDM International Inc.uñoz-Mas, R., Sánchez-Hernández, J., Martínez-Capel, F., Tamatamah, R., Mohamedi, S., Massinde, R.,JournalProposed the national legislative frameworks should incorporate the use of physical habitat simulation approaches including environmental rules regarding flows. Therefore, the combined analysis of the habitat preferences at the assemblage and species level analsis should provide valuable information to adequately assist further studies on microhabitat preferences and EFAs. https://doi.org/10.1111/eff.12469
TAFIRIFisheries EcologyAssessment of the impacts of artisanal fishing gears on nearshore fish stocks along coastal waters off the Kilwa–Mafia seascape in Tanzania (2019)
2019
To address the gap related to catch composition and levels of depletion of different fish species based on the use of three artisanal fishing gears (handlines, gillnets, and traps)CompletedMarine and Coastal Environmental Management Project (MACEMP) through a GEF grant number TF055580, and the Tanzania Fisheries Research Institute Chande, M., Kimirei, I.A., Igulu, M.M., Kuguru, B., Kayanda, R., Mwakosya, C., Kangwe, S.J., Sululu, J., Ulotu, E.JournalProductivity and susceptibility analysis (PSA) indicates that L. lentjan is at high risk of depletion, suggesting a gear-based management approach is needed. • https://doi.org/10.1016/j.rsma.2019.100531
TAFIRIFish biology Patterns of genomic differentiation between two Lake Victoria cichlid species, Haplochromis pyrrhocephalus and H. sp. macula (2019
2019
To assesse the pattern of genomic differentiation between two Lake Victoria cichlid species collected in sympatry, Haplochromis pyrrhocephalus and H. sp. ‘macula,’ based on the pooled genome sequences of 20 individuals of each speciesCompletedKAKENHI Grant Number JP23570269 and JP26440209, and an internal SOKENDAI grantTakuno, S., Miyagi, R., Onami, J.I., Takahashi-Kariyazono, S., Sato, A., Tichy, H., Nikaido, M., Aibara, M., Mizoiri, S., Mrosso, H.D.J., Mzighani, S.I., Okada, N., Terai, YJournalLake Victoria cichlid species diversified via selection on standing genetic variation. Additional genomic sequences of multiple individuals from additional species pairs with extensive gene flow will allow us to paint a more comprehensive picture of the role of gene flow in Lake Victoria cichlid radiation. https://doi.org/10.1186/s12862, 019 1387, 2
TAFIRIStock Assessment & Fisheries StatisticsBring fishermen at the center”: the value of local knowledge for understanding fisheries resources and climate related changes in Lake Tanganyika (2019)
2019
To identify the value of local knowledge of fishermen from Kigoma, along the North Eastern shores of Lake Tanganyika, regarding fish and climate-related issues of the lake and explore how that knowledge can be incorporated into sustainable management activitiesCompletedProjections of Climate Change Impacts on Lake Tanganyika” (the CLEAT project under DANIDA funding) Bulengela, G., Onyango, P., Brehm, J., Staehr, P.A., Sweke, EJournalFishermen need to be further “brought at the center” in decision-making processes that influence fisheries management options. https://doi.org/10.1007/s10668,019 00443,z
TAFIRIStock Assessment & Fisheries StatisticsAssessment of the impacts of artisanal fishing gears on nearshore fish stocks along coastal waters off the Kilwa–Mafia seascape in Tanzania
2019
The study seeks to address the gap related to catch composition and levels of depletion of different fish species based on the use of three artisanal fishing gears (handlines, gillnets, and traps). The repre- sentative study sites were within the Kilwa to Mafia seascape in the coastal waters of southern Tanzania. CompletedThe study was funded by the Marine and Coastal Environmen- tal Management Project (MACEMP) through a GEF grant number TF055580, and the Tanzania Fisheries Research Institute (TAFIRI). Chande, M., I. A. Kimirei, M. M. Igulu, B. Kuguru, R. Kayanda, C. Mwakosya, S. J. Kangwe, J. Sululu, and E. Ulotu. 2019JournalThis study did not consider fish sizes and other biometric data, which would have painted a better picture of the artisanal fishery in Tanzania. Also, the study tried to examine the within- year seasonal variation in the catches, but the data represent an insufficient number of months per year to warrant such an analysis. Thus, the results should be interpreted with these lim- itations in mind. Nonetheless, this study presents information on the prevailing situation in the artisanal fishery in the Kilwa– Mafia seascape, which may be similar to other coastal regions in the country. We recommend therefore that future studies should, also, include parameters which were not considered in this study, and that sampling should cover all months of the year to provide a complete description of the fishery. https://doi.org/10.1016/j.rsma.2019.10053
TAFIRIFish biology Ancestral hybridisation facilitated species diversification in the Lake Malawi cichlid fish adaptive radiation (2019)
2019
To re-investigate the occurrence and role of ancestral hybridization in the Lake Malawi cichlid adaptive radiation by analyzing recently published and newly obtained whole genome sequences of haplochromine cichlids from Lake Malawi, the LVRS, as well as other East African lakes and riversCompletedWellcome Trust (Grant Nos. WT206194 and WT207492; European Research Council, ERC CoG “CICHLIDX” (617585) and Swiss National Science Foundation (Grant No. 176039; the Royal Society Leverhulme Trust Africa Awards (AA100023 and AA130107 Svardal, H., Quah, F., Malinsky, M., Ngatunga, B., Miska, E., Salzburger, W., Genner, M., Turner, G., Durbin, R.JournalThe two ancestries in Malawi cichlid genomes are present in large blocks of several kilobases, but there is little variation in this pattern between Malawi cichlid species, suggesting that the large-scale mosaic structure of the genomes was largely established prior to the radiation. The findings reinforce the role of ancestral hybridization in explosive diversification by demonstrating its significance in one of the largest recent vertebrate adaptive radiations https://doi.org/10.1093/molbev/msz294
TAFIRIAquacultureEnvironmental DNA Surveillance for Improved Aquaculture Production under the Global Challenges Research Fund
2019
1) Enhance national capability to identify the tilapia species used in small scale aquaculture in Tanzania. 2) Develop national capacity to use robust DNA monitoring to detect small- bodied invasive species that compromise fish production. 3) Notify farmers and hatchery workers of the species status of their stocks, enabling informed decisions about stocking methods, while informing policy at the national levelIn progress GCRF Genner, M./Kishe, M.,A.,ProjectsIn-progress
TAFIRIClimate change & environmentDigging deep into Lake Victoria’s past: 20,000 years of evolution and ecosystem dynamics in the world’s largest tropical lake reconstructed from sediment cores, fossils and ancient DNA
2019
Understanding and quantifying the mutual influences of (i) environmental change on biodiversity, and (ii) how biodiversity changes reshape, in turn, environmental conditions over extended time scales is one of the biggest and most timely questions in current environmental sciencesIn progressSNSF SINERGIAOle SeehausenProjectsIn-progress
TAFIRIStock Assessment & Fisheries StatisticsOperational, environmental, and resource productivity factors driving spatial distribution of gillnet and longline fishers targeting Nile-perch (Lates niloticus), Lake Victoria. Journal of Great Lakes Research
2018
I. Examine the distributional patterns of longline and gillnet fishers targeting Nile perch in Lake Victoria in two contrasting regions (gulf and open lake region). II. Examine the operational and environmental factors driving encounter rates and observed patch densities of different size classes of Nile perch. III. Compare the relative biomass estimates of Nile perch with what is known about the patterns in spatial distribution of different size classes of Nile perch. IV. Discuss the resulting variability in spatial distribution and catch rate patterns of the two fisheries.CompletedNetherlands Organisation for Scientific Research (Happy K. Peter and Paul A.M. vJournalCurrent gear regulations, when enforced, require gillnet and longline fishers to focus on the lower productive adult Nile perch stock further from the shore and deeper in the water column. Without concurrent effort regulations to reduce the number of fishers, this may be counterproductive and lead to overfishing of the large Nile perch size classes, especially in the regions close to homeports. https://doi.org/10.1016/j.jglr.2018.10.010
TAFIRIFish biology Improving Management Strategies for Sustainable Fisheries in Zanzibar
2018
To explore areas of scientific intervention for sustainable utilization of Fisheries Resources in ZanzibarCompletedCOSTECHJiddawi. NS., Shayo. SD., Kuguru BL., Mohamed .A., Ubwa. FB., Sheikh M and Ruhundwa. H Policy Briefi) Department of fisheries need to formulate fishery management Framework to promote sustainable fishing practices for marine resources conservation ii) Department of Fisheries development and Non-Governmental Organizations need to create awareness on sustainable use of fisheries resources iii) Improve fish handling technologies to reduce post- harvest losses. iv) To strengthen marketing chain on fish and fishery products to increase income. v) Department of fisheries and local government authorities need to provide sustainable extension services. vi) Enforcement of Marine Patrol and Surveillance unit vii) Academic and research Institutions should explore fisheries research services and provide proper information for better management viii) Aquaculture Unit need to promote aquaculture industry reduce over exploitation in the wilds resources. ix) Directorate of policy plan and research within the ministry should establish common database for fisheries statistics. COSTECH
TAFIRIFish biology Cruise Report; “DR FRIDTJOF NANSEN’’ Surveys of regional Resources and Ecosystem Off South East Africa; Tanzania
2018
To conduct the ecosystem survey along the coast of Tanzania CompletedFAO/IMRJohannessen, T., Mahongo, S., Lucilla, G., Helene, L., Lars JN., Diana Z., Shayo SD., Kishe M., Kyewalyanga, M and Mitto, C Technical ReportThe topography in shallower waters along Tanzania is generally hilly, which prevented accurate estimation of the abundance of demersal fish stocks. Alternative ways should be used, such as underwater visual census and gear-based methods CRUISE REPORTS DR FRIDTJOF GCP/GLO/690/NOR NANSEN EAF-Nansen/CR/2018/4
TAFIRIAquatic ecosystems & BiodiversityNutrient release from sediments and biological nitrogen fixation: Advancing our understanding of eutrophication sources in Lake Victoria, Tanzania
2018
To evaluate the importance of sediments and biological nitrogen fixation as sources of nutrient enrichment into Lake Victoria in Magu, Mwanza and Kayenze bays influenced by different anthropogenic activities. CompletedWorld Bank-LVEMP PROJECTShayo SD and Limbu SM JournalMultidisciplinary management interventions on all activities leading to excessive release of nutrients into the lake including unmanaged disposals of domestic, industrial and agricultural wastes should be limited to ensure the sustainable health of the Lake Victoria ecosystem. https://doi.org/10.1111/lre.12242
TAFIRIAquacultureValue chain analysis of aquaculture industry in Tanzania
2018
To evaluate the value chain of feed, fingering and fish farming in selected areas of Morogoro, Dar es Salaam and Coast regions (Eastern zone), and Lindi region (Southern zone). Also to identify and characterize series of activities and services needed to bring a product or service from its conception to final consumers, and ultimate disposal after use.CompletedWorld FishShoko AP., Ulotu EE. , Shayo SD., Mathew OS., Sloans C., Madalla N and Tamatamah R aniel ShayoTechnical Reporti) Government enforce extension services to fish famers. ii) Trainings of fish farmers on proper farming technologies. iii) Fisheries division to Strengthen hatchery infrastructure iv)The authorities introduce incentives by exempting or reducing tax from imported feed ingredients, machinery and hatchery facilities TAFIRI
TAFIRIStock Assessment & Fisheries StatisticsFisheries Improvement Projects (FIPs): Octopus Fishery project
2018
To find out the octopus fishery in-terms of its distribution and abundance in relation to environmental variables, population dynamics, geo-referenced reefs habitats and biometric information. CompletedWWFKishe, M. A.Technical ReportSeasonal closure of reef areas is recommended as a tool for the sustainable management of the octopus fishery; There is a need to prepare and implement a reef fishery management plan and educate the stakeholders of its importance to fishery recovery
TAFIRIAquatic ecosystems & BiodiversityThe status and distribution of freshwater fishes in the Lake Victoria basin
2018
To assess the fishes species and their distribution in Lake VictoriaCompletedIUCNKishe-Machumu, M.A., Natugonza, V., Nyingi, D.W., Snoeks, J., Carr, J.A., Seehausen, O., Sayer, C.A. Book ChapterAreas of unique biodiversity and critical habitats, such as papyrus belts which act as nursery and breeding areas, should be identified, mapped and protected from anthropogenic degradation and pollution DOI: https://doi.org/10.2305/IUCN.CH.2018.RA.2.en
TAFIRIStock Assessment & Fisheries StatisticsOctopus Fishery in the Taanzania Mainland
2018
To study on the Stock Assessment, Spatial and Temporal Distribution of Octopus Fishery in the Mainland TanzaniaIn progressSWIOFish/WORLD BANKMary A. KisheProjectsManagement options should put in place to controll the ffishing in deep waters/reefs during the spawning/breeding season; It is high time to consider a sustainable and environmental friendly fishing gear for the octopus, Rotation or Seasonal reef closer is encouraged
TAFIRIStock Assessment & Fisheries StatisticsGenetic connectivity of Fenneropenaeus indicus (H. Milne Edwards 1837) among three prawn fishing grounds of Tanzanian coastal waters
2018
The population study to test the hypothesis that only a single population exists in the area, utilizing the mitochondrial DNA (mtDNA) sequence data.CompletedSida/WIOMSA/SWIOFPMwakosya, C. A., Mgaya, Y. D., & Jiddawi, N. S. (2018).JournalThe study established that the populations existing in the three prawn fishing grounds were a panmictic population. Thus, the reconsideration of the geographical distribution of the fishing grounds (Zones 1–3) and extension of closed season management strategy to the artisanal fishers are recommended. Further study is recommended using nuclear markers to infer population structure in the coastal waters of Tanzania. Regional Studies in Marine Science, 24, 107–112. https://doi.org/10.1016/j.rsma.2018.08.001
TAFIRICapture fishery Losing cichlid fish biodiversity: genetic and morphological homogenization of tilapia following colonization by introduced species
2018
Investigate the genetic and morphological consequences of stocking invasive tilapia species in two water bodies in central TanzaniaCompletedRoyal Society-Leverhulme Trust Africa Awards AA100Shechonge, A., Ngatunga, B.P., Bradbeer, S.J.,Ford, A.G.P., Smith, A.M., Tamatamah, R.,Harrington, J., Turner, G.F. & Genner, M.J. Journalintroduction of non-native fish species can lead to hybridization with indigenous species and threaten unique biodiversity. The gene pools and phenotypic identity of the indigenous O. urolepis have been severely impacted by the stocking of the invasive species. Given the lack of evidence for clear commercial benefits from stocking invasive tilapia species in waters already populated by indigenous congenerics, we suggest further spread of introduced species should be undertaken with considerable caution. Implementation of effective biosecurity measures will require training of fisheries extension officers on the impact of introducing non-native species to natural water bodies, as well as building capacity in species identification. https://doi.org10.1007/s10592-018-1088-1
TAFIRICapture fishery Hybridization between introduced and critically endangered indigenous tilapia fishes in northern Tanzania
2018
Quantify interspecific hybridization between these introduced species and the indigenous species Oreochromis esculentus, Oreochromis jipe and Oreochromis korogwe.CompletedRoyal Society-Leverhulme Trust Africa Awards AA100Bradbeer, S.J., Harrington, J., Watson, H., Warraich, A., Shechonge, A., Smith, A., Tamatamah, R., Ngatunga, B.P.,Turner, G.F. & Genner, M.JJournalResults provide the first evidence of hybridization between the introduced species and the Critically Endangered O. jipe in Tanzania. fisheries managers adopt the precautionary principle, that suggests future aquaculture and capture fisheries development should be based primarily on indigenous large-bodied Hydrobiologia 123 species, unless there is compelling evidence that the economic and societal benefits will outweigh risks to biodiversity and existing artisanal fisheries. Further information on the likelihood of hybridization among species under different environmental conditions would help to guide policy and fisheries development in the region. https://doi.org/10.1007/s10750-018-3572-5
TAFIRICapture fishery Elasmobranch fishing in Tanzania. Preliminary analysis based on species distribution and composition from the landed weight.
2018
Collection of catch and biometric information of landed shark and rays at selected landing sitesIn progressWCS-TanzaniaKuboja, B, Kuguru B et alTechnical ReportIn the absence of long term catch data, the comparative trends of species distribution in terms of landed weight and composition can be a useful indicator of the status of the specific elasmobranch species. Pateobatis spp., Rhina spp., and Taeniura spp at Sahare, Rhynchobatus spp, Taeniura spp., and Aetobatu spp., at Kunduchi and Manta spp., & Alopias spp in Nungwi highlights threats from overexploitation and the focus of future research.
TAFIRIFisheries Information SystemsOreochromis chungruruensis. The IUCN Red List of Threatened Species
2018
Assessment of Oreochromis chungruruensis. The IUCN Red List of Threatened SpeciesCompletedIUCNTurner, G., Shechonge, A. & Tweddle, D.Journal It is critically endangered due to overfishing and non-native tilapia species that have been introduced to Lake Chungruru.Currently population decreasing http://dx.doi.org/10.2305/IUCN.UK.20182.RLTS.T60626A47204093.en
TAFIRIAquatic ecosystems & BiodiversityDifferences in trophic resources and niches of two juvenile predatory species in three Pangani estuarine zones, Tanzania: stomach contents and stable isotope approaches
2018
To characterize the trophic relationships between the juvenile co-existing predatory species, Carangoides. chrysophrys and Epinephelus malabaricus throughout the Pangani estuarine system by using stomach contents and stable isotopes of carbon and nitrogenCompletedUnited Republic of Tanzania through the Tanzania CAlistidia Paul Mwijage, Daniel Abel Shilla and John Ferdinand MachiwaJournalThe study revealed that both predatory fish rely on clupeids and mugilid preys that are trophically linked with estuarine and marine basal food sources. Thus, management strategies and plans in place should be cautiously implemented to ensure the balanced anthropogenic freshwater use in the catchment and fishing activities, for the maintenance of the Pangani estuarine ecosystem health. https://doi.org/10.1186/s40709-018-0084-4
TAFIRIAquatic ecosystems & BiodiversitySeasonal patterns of thermal stratification and primary production in the northern parts of Lake Tanganyika
2018
To (i) understand the influence of thermal stratification on the rates of primary production in Lake Tanganyika; (ii) describe seasonal changes in vertical gradients of primary production and investigate the importance of water temperature, water column stability, nutrient availability (soluble reactive phosphorus), water clarity, and chlorophyll a concentrations on the overall areal primary production and its vertical distribution in the pelagic zones of two sites (Kigoma Bay and Mahale)CompletedDanish International Development Agency (DANIDA), under the CLEAT projectPrisca MzirayPhD thesis(i) The vertical distribution of primary production in Lake Tanganyika seems strongly dependent on broad seasonal changes in regional climate (winds and temperature), which have an influence on changes in the lake thermal structure and nutrient availability as well as the extent of the photic zone (light availability); (ii) In Lake Tanganyika, estimates of areal primary production were significantly affected by the occurrence of the deep chlorophyll maximum (DCM) and thus future studies of primary production should include deep waters (i.e., metalimnion zone) https://doi.org/10.1016/j.jglr.2018.08.015
TAFIRIFisheries Information SystemsIUCN red list assessment
2018
Assessment of Oreochromis karongae. The IUCN Red List of Threatened Species 2018CompletedIUCNKanyerere, Z, Phiri, B & Shechonge, A.Journal Conservation needed , Species management, Training,Awareness & communications http://dx.doi.org/10.2305/IUCN.UK.20182.RLTS.T61293A47244008.en.
TAFIRIAquatic ecosystems & BiodiversityImportant organic matter sources and trophic pathways for the nutrition of Hilsa kelee (Cuvier, 1829) and Valamugil buchanani (Bleeker, 1853) in Pangani macro-tidal estuary, Tanzania
2018
To identify and estimate the relative contribution of major organic matter sources to the nutrition of Hilsa kelee and Valamugil buchanani in two Pangani estuarine zones with different tidal and fresh water influencesCompletedUnited Republic of Tanzania through the Tanzania CMwijage, A.P., Shilla, D.A., Machiwa, J.F., Zhang, J., Fuqiang, W., Ying, W.JournalPangani estuarine food webs are linked to terrestrial, marine and in-situ produced OM sources, thus, the management strategies should ensure rational resource use by minimizing land clearing and multi-water use in upstream of Pangani river that interfere the delivery of terrestrial organic input into the estuary and impair the trophic-base diversity supporting estuarine food webs https://doi.org/10.1080/02757540.2018.152084
TAFIRIAquatic ecosystems & BiodiversityImportant organic matter sources and trophic pathways for the nutrition of Hilsa kelee (Cuvier, 1829) and Valamugil buchanani (Bleeker, 1853) in Pangani macro-tidal estuary, Tanzania
2018
To identify and estimate the relative contribution of major organic matter sources to the nutrition of Hilsa kelee and Valamugil buchanani in two Pangani estuarine zones with different tidal and fresh water influencesCompletedUnited Republic of Tanzania through the Tanzania CMwijage, A.P., Shilla, D.A., Machiwa, J.F., Zhang, J., Fuqiang, W., Ying, W.JournalPangani estuarine food webs are linked to terrestrial, marine and in-situ produced OM sources, thus, the management strategies should ensure rational resource use by minimizing land clearing and multi-water use in upstream of Pangani river that interfere the delivery of terrestrial organic input into the estuary and impair the trophic-base diversity supporting estuarine food webs. • https://doi.org/10.1080/02757540.2018.1520845
TAFIRISocio-economics & MarketingThe socio-economic implications of illegal fishing practices in Lake Victoria: a case study of three Villages in Tanzania
2018
To examine the relationship between socio-economic factors and illegal fishing practices in three villages adjacent to Nyegezi Bay in Lake Victoria. It identified the characteristics of households using descriptive analysis techniques and analyzed the socio-economic determinants that influence illegal fishing practices and their implications using correlation matrix test of differencesCompletedLake Victoria Environmental Management Project (LVEMP II)Fenant Laurent MhagamaJournalThere is a need of improving the social and economic statuses of these community through improving education and increasing opportunities for alternative sources of livelihoods may help address the issue of illegality in these areas. https://www.ajol.info/index.php/ajthf/article/view/173264
TAFIRISocio-economics & MarketingStrategies to Improve Trade in Dagaa (Rastrineobola argentea) from Lake Victoria
2018
This study assessed the dagaa trade to develop strategies to improve its contribution to nutrition, food security and incomesCompletedEuropean Union (EU) for financial support under the Fish Trade Programme of WorldFishK Odongkara, E Yongo, F Mhagama, P Onyango, S Chimatiro, R Tumwebaze, J Akumu, B Mbilingi, R Okura, A Nasuuna, H Ochaya, M Owili, E Bwana, M OngandJournalIt is recommended that institutions should strengthen policy, information, fisheries management, quality assurance, market regulation and data capture https://www.ajol.info/index.php/ajthf/article/view/172892
TAFIRIFish biology Changes in the Diet of Synodontis victoriae and Synodontis afrofischeri in Lake Victoria, Tanzanian waters
2018
To investigated the diet of S. victoriae and S. afrofischeri in Lake Victoria, and examined the extent to which they overlap, and whether or not their diets have changed over time.CompletedTrade and Agriculture Support Programme Phase IIM.V.Elison, E. Mlaponi, M.J. Musiba, G.W. Ngupula, B. Kashindye & R.J. KayandaJournal- https://www.ajol.info/index.php/ajthf/article/view/170910
UDSMAquatic ecosystems & BiodiversityEcosystem Health and Biodiversity in the Pangani Basin, Tanzania
2018
To study the area of delineation of the basin CompletedConference on Sustainable Tanzania-China PartnershipKaaya, Lulu Tunu (2015)JournalFocus on restoration http://repository.udsm.ac.tz:8080/xmlui/handle/20.500.11810/3393
TAFIRIAquacultureTHE INFLUENCE OF STOCKING DENSITY ON WATER QUALITY AND GROWTH OF BIGHEAD CATFISH (Clarias macrocephalus) IN RECIRCULATING AQUACULTURE SYSTEM
2018
The aim of proposed study was to examine the influence of stocking density on (1) water quality parameters (2) fish production performance (3) Also the experiment determined the amount of waste (sludge) produced and its dry matterCompletedVLIR-Network-Vietnam projectSIWEMA AMRAN LUVANGAMSc thesisFarmer are advised to adopt the stocking density with the following management practice: If using the swirl separator for mechanical filtration sediment water should be removed10% of swirl separators’ volume in a day, this will help to control the water quality in the system. Fish tank should be covered at the height 20-30cm extension above to control the fish escape and fish damage. To manage the behavior fish should be fed by hand, this is because of cannibalistic behavior but also dead fish sink down so it is easy to control the mortality
TAFIRIFish biology Spatial and temporal distribution of Ligula intestinalis (Cestoda: Diphyllobothriidea) in usipa (Engraulicypris sardella) (Pisces: Cyprinidae) in Lake Nyasa.
2018
To understand the transmission dynamics of the parasite Ligula intestinalis in a huge lake like Lake NyasaCompleted(i) University of Bergen, Norway (ii) Norwegian State Education Loan Fund (Lånekassen)Nestory Peter Gabagambi; Arne Skorping.JournalThere are no indications of population crashes of the fish host Engraulicypris sardella (Usipa), suggesting that the infection dynamics of the parasite may be markedly different in a large like the Nyasa, as compared to much smaller lakes the earlier studies were based on https://doi.org/10.1017/S0022149X17000724
TAFIRIAquatic ecosystems & BiodiversityThe importance of freshwater species to livelihoods in the Lake Victoria Basin
2018
To investigate the individual species/use combinations on several factors including: the scope of use, end use, driver of the harvest, harvesters of the product, consumers of the product; level of reliance on the product; value of the product to livelihoods and the economy.CompletedIUCNSayer, C.A., Máiz-Tomé L., Akwany L.O., Kishe-Machumu M. A., Natugonza V., Whitney, C. W., Omondi R. Nshutiyayesu S, Kabuye Book ChapterThe fisheries in Lake Victoria are dominated by Nile Perch and Nile Tilapia and dagaa, which require additional research and new management approaches to be sustainable components to the local livelihoods and national and regional economies. DOI: https://doi.org/10.2305/IUCN.CH.2018.RA.2.en
TAFIRIAquatic ecosystems & BiodiversityChanges in the Diet of Synodontis victoriae and Synodontis afrofischeri in Lake Victoria, Tanzanian waters.
2018
This study investigated the diet of S. victoriae and S. afrofischeri in Lake Victoria, and examined the extent to which they overlap, and whether or not their diets have changed over time. CompletedTrade and Agriculture Support Programme Phase II (TASP II)Elison, M. V., Mlaponi, E., Musiba, M. J., Godfrey W. Ngupula, G.W., Kashindye, B. B., and Kayanda, RJournalBoth Synodontis species appear to be generalists, feeding on a wide spectrum of different foods, and the ecological changes in Lake Victoria may have created new food sources for them. In particular, competition from the more specialised haplochromines, which may have suppressed Caridina, seems to have enabled them to utilise food that was previously unavailable. This is yet another example of the way in which the surviving native fish species have adapted to the new environmental conditions in Lake Victoria ttps://www.ajol.info/index.php/ajthf/issue/view/16888
TAFIRIAquacultureIntegrated seaweed–sea cucumber farming in Tanzania. Western Indian Ocean Journal of Marine Science
2018
(i)To evaluate growth, health and survival of both species when co–cultured in the integrated polyculture system. (ii) To determine the potential of this form of polyculture for the reduction of biodeposits (organic matter sediments) in the integrated system compared to monoculture systems (iii) To assess the perception of the people towards sea cucumber maricultureCompletedThe German Academic Exchange Service (DAAD) and ZMT Godfrey FabianiJournal1) In this review it is recommended that high growth performance of seaweed in co-culture with sea cucumbers can be obtained in Tanzania, using high densities of seaweed (500 gm-2) and low densities (200 gm-2) of sea cucumbers. 2) Equally, co-culture offers a more efficient use of limited coastal space. 3) The sea cucumber H. scabra is highly viable for lagoon co-culture with seaweed 4) The initial investment can be an obstacle but the use of local materials to construct culture facilities may help. https://www.ajol.info/index.php/wiojms/article/view/175972
UDOMClimate change & environmentShading and simulated grazing increase the sulphide pool and methane emission in a tropical seagrass meadow.
2018
To examine the effects of successive loss of seagrass biomass as a result of shading and simulated grazing at two intensity levels on sulphide (H2S) content and methane (CH4) emission in a tropical seagrass meadow in Zanzibar (Tanzania)CompletedSidaLyimo, L. D., Gullström, M., Lyimo, T. J., Deyanova, D., Dahl, M., Hamisi, M. I., & Björk, M.PhD thesisThe worldwide rapid loss of seagrass areas due to anthropogenic activities may therefore have significant effects on carbon sink-source relationship within coastal seas. https://www.sciencedirect.com/science/article/abs/pii/S0025326X17307403
FOREIGN INSTITUTIONFish biology Detection of tilapia lake virus (TiLV) infection by PCR informed and wild Nile tilapia (Oreochromis niloticus) from Lake Victoria
2018
There is a need for rapid diagnostic tools to identify infected fish to limit the spread in individual farmsCompletedNor-wegian Development Agency, Project No. TAN/13/0027Mugimba, K. K., Chengula, A. A., Wamala, S., Mwega, E. D., Kasanga, C. J., Byarugaba, D. K., & Mutoloki, SPhD thesisThe findings clearly demonstrate that viral nucleic acids are present at low level in seemingly healthy fish
TAFIRIClimate change & environmentMonitoring climate change and anthropogenic pressure at Lake Tanganyika
2018
to: 1) provide an overview of the status and threats to Lake Tanganyika, 2) highlight past environmental monitoring and gaps, and 3) present proposals in relation to developing a potential LTRIEMPCompletedWorld Bank, EU, IUCN, and Sida-SARECPlisnier, P.DJournalBeing a shared water body , a harmonized monitoring programme could focus on a limited number of parameters in the field of climate change, fisheries,water quality, land use. and biodiversity to ensure its long-term sustainability. https://www.sciencedirect.com/science/article/pii/S0380133018300911
TAFIRIAquatic ecosystems & BiodiversityWet deposition of atmospheric nitrogen contributes to nitrogen loading in the surface waters of Lake Tanganyika, East Africa: a case study of the Kigoma region.
2018
to provide new insights into the trends and variability of atmospheric N deposition in the study area, with particular emphasis on linkages between N deposition and precipitation characteristicsCompletedConstruction Plan for Oversea Scientific Education Base of Chinese Academy of Sciences (SAJC201609).Gao, Q.JournalN deposition in Lake Tanganyika is facing an anthropogenic-induced threat combined with climate change, more awareness need to be provided to policy makers on how to take care of natural resources around the lake. https://link.springer.com/article/10.1007/s11356-018-1389-4
TAFIRIAquacultureAdvancing Small-scale Fish Farming in Tanzania: Identification of the Best Performing Local tilapia Strain and Low Cost Feed’.
2018
Conduct on farm trials on different Tilapia strain to test the best performing strainCompletedAustralian High Commission (AHC) Direct Aid ProgrammeShoko, A. P., Ulotu, E. E. and Nandlal, S.ProjectsFish farmers in Barikiwa village and surrounding areas in Liwale may use TAFIRI strain as the best performing Tilapia strain
TAFIRIAquaculturePromoting Environmentally, Economically, and Socially Sustainable Cage Aquaculture (PESCA) on the African Great Lakes".
2018
The undertake a review of the extent of cage aquaculture, adherence to best practices and reflections for sustainable aquaculture on African inland watersCompletedAfrican Great Lakes Conservation Fund administered by The Nature Conservancy with funding from John D. and Catherine T. MacArthur FoundationMusinguzi, L., Lugya, J., Rwezawula, P., Kamya, A., Nuwahereza, C., Halafo, J., Kamondo, S., Njaya, F., Aura, C., Shoko, A. P.ProjectsCage aquaculture is qualified as an additional stressor to the African inland waters and because it is expected to continue expanding, thus, adherence to best practices should be promoted for sustainability.
SUAAquacultureUse of ICTS in sharing agricultural information among fish farmers in the Southern Highlands of Tanzania
2018
To assess the use of ICTs among fish farmers in sharing agricultural information.CompletedSUABenard, R., Dulle, F., & Lamtane, H.MSc thesisSince ICT tools play an important role in communicating and sharing relevant and current agricultural knowledge and information to farmer’s communities, the Government should support fish farmers by subsidizing some costs that more fish farmers can acquire and use them. http://www.suaire.suanet.ac.tz:8080/xmlui/handle/123456789/2483
SUAAquatic ecosystems & BiodiversityGenetic diversity and gene flow among the giant mud crabs (Scylla serrata) in anthropogenic-polluted mangroves of mainland Tanzania: Implications for conservation
2018
To assess the patterns of genetic diversity and gene flow in the giant mud crabs (S. serrata) inhabiting anthropogenic-polluted mangroves along the Tanzanian coast.CompletedVlaamse Interuniversitaire Raad – University Development Cooperation (VLIR-UOS)Cyrus Rumisha, Robinson H. Mdegela, Paul S. Gwakisa, Marc KochziusPhD thesisCalls for strengthened measures to control salt farming activities. https://doi.org/10.1016/j.fishres.2018.04.015
TAFIRIAquacultureDietary Aspilia mossambicensis and Azadirachta indica supplementation alter gonadal characteristics and histology of juvenile Nile tilapia (Oreochromis niloticus) (2018a)
2018
To evaluate the gonadal characteristics and histological changes of Nile tilapia, Oreochromis niloticus gonads fed on Aspilia plant, Aspilia mossambicensis and Neem tree, Azadirachta indica.CompletedUnited Republic of Tanzania through the Tanzania Commission for Science and Technology (COSTECH)Kapinga, I.B., Limbu, S.M., Madalla, N.A., Kimaro, H.W., Mabiki F.P., Lamtane, H.A., Tamatamah R.AJournalThe study proved that dietary supplementation with A. mossambicensis and A. indica leaf powders alter gonadal characteristics of O. niloticus and histology triggered by alkaloids and flavonoids; thus farmers who use the two plants to control prolific breeding should limit the dose inclusion to 2 g/kg to avoid severe effects on fish testis and ovaries. https://doi.org/10.1111/are.13931
TAFIRIAquacultureAspilia mossambicensis and Azadirachta indica medicinal leaf powders modulate physiological parameters of Nile tilapia (Oreochromis niloticus) (2018b)
2018
To determine the effect of various doses of A. mossambicensis and A. indica leaf powders on hatchlings production, growth performance, feed utilization, survival rate and haematological parameters of O. niloticusCompletedUnited Republic of Tanzania through the Tanzania Commission for Science and Technology (COSTECH)Imani B. Kapinga, Samwel M. Limbu, Nazael A. Madalla, Wahabu H. Kimaro, Rashid A. TamahtamahJournalThe two plants’ leaf powders, A. mossambicensis and A. indica control prolific breeding of O. niloticus, modulate its growth performance and feed utilization. As well, they modulate haematological parameters of O. niloticus indicating immunological response towards stress or intoxication • https://doi.org/10.1016/j.ijvsm.2018.03.003
TAFIRIAquatic ecosystems & BiodiversityLimited hybridization between introduced and Critically Endangered indigenous tilapia fishes in northern Tanzania (2018)
2018
To quantify interspecific hybridization between the introduced/non-native fish species (Nile tilapia (Oreochromis niloticus) and blue-spotted tilapia (Oreochromis leucostictus)) and the indigenous species (Oreochromis esculentus, Oreochromis jipe and Oreochromis korogwe) in northern TanzaniaCompletedThe Royal Society-Leverhulme Trust Africa Awards AA100023 and AA130107; and GFT, and a BBSRC award BB/M026736/Stephanie J. Bradbeer, Jack Harrington, Henry Watson, Abrahim Warraich, Asilatu Shechonge, Alan Smith, Rashid Tamatamah, Benjamin P. Ngatunga, George F. Turner & Martin J. GennerJournalThe results provided evidence of hybridization between the introduced species and the Critically Endangered O. jipe in Tanzania, and so recommended that future introductions of hybridization-prone species should be carefully evaluated https://doi.org/10.1007/s10750-018-3572-5
TAFIRIAquatic ecosystems & BiodiversityDifferences in trophic resources and niches of two juvenile predatory species in three Pangani estuarine zones, Tanzania: stomach contents and stable isotope approaches (2018a).
2018
To characterize the trophic relationships between the juvenile co-existing predatory species, Carangoides. chrysophrys and Epinephelus malabaricus throughout the Pangani estuarine system by using stomach contents and stable isotopes of carbon and nitrogenCompletedUnited Republic of Tanzania through the Tanzania Commission for Science and Technology (COSTECH)Alistidia Paul Mwijage, Daniel Abel Shilla and John Ferdinand MachiwaJournalThe study revealed that both predatory fish rely on clupeids and mugilid preys that are trophically linked with estuarine and marine basal food sources. Thus, management strategies and plans in place should be cautiously implemented to ensure the balanced anthropogenic freshwater use in the catchment and fishing activities, for the maintenance of the Pangani estuarine ecosystem health.
TAFIRIAquatic ecosystems & BiodiversityImportant organic matter sources and trophic pathways for the nutrition of Hilsa kelee (Cuvier, 1829) and Valamugil buchanani (Bleeker, 1853) in Pangani macro-tidal estuary, Tanzania (2018b)
2018
To identify and estimate the relative contribution of major organic matter sources to the nutrition of Hilsa kelee and Valamugil buchanani in two Pangani estuarine zones with different tidal and fresh water influencesCompletedUnited Republic of Tanzania through the Tanzania Commission for Science and Technology (COSTECH)Mwijage, A.P., Shilla, D.A., Machiwa, J.F., Zhang, J., Fuqiang, W., Ying, WJournalPangani estuarine food webs are linked to terrestrial, marine and in-situ produced OM sources, thus, the management strategies should ensure rational resource use by minimizing land clearing and multi-water use in upstream of Pangani river that interfere the delivery of terrestrial organic input into the estuary and impair the trophic-base diversity supporting estuarine food webs. • https://doi.org/10.1080/02757540.2018.1520845
UDSMFish quality and processingEffects of washing on the polycyclic aromatic hydrocarbons (PAHs) contents in smoked fish
2018
To investigate the effects of washing on the polycyclic aromatic hydrocarbons (PAHs) contents in three smoked fish species, namely Lates niloticus, Synodontis victoriae and Haplochromis spp.CompletedJK Nyerere University of Agriculture and TechnologyMahugija, J. A. M., Njale, EJournalIt is recommended that the smoked fish should be thoroughly washed prior to cooking to reduce the concentrations of the PAHs and make the fish safe for the consumers https://www.sciencedirect.com/science/article/abs/pii/S0956713518302834?dgcid=raven_sd_recommender_email
TAFIRIAquatic ecosystems & BiodiversityInvestigating the influence of habitat structure and hydraulics on tropical macroinvertebrate communities (2018)
2018
To investigated the role of habitat structure and hydraulics, at the microhabitat scale, on tropical macroinvertebrate communities in two tributaries of the Kilombero River located in the foothills of the Udzungwa Mountains for better improving our knowledge and providing guidelines for adequate environmental flow assessments.CompletedPrivateMuñoz-Mas, R., Sánchez-Hernández, J., McClain, M.E., Tamatamah, R., Mukama, S.C., Martínez-Capel, F.JournalWater abstraction is unlikely to have neutral effect over the macroinvertebrate communities of the Udagaji and Mgugwe rivers and therefore these practices are not recommended from an ecological conservation perspective. These results should enhance the implementation of ongoing and future environmental flow assessment studies https://doi.org/10.1016/j.ecohyd.2018.07.005
UDSMFish quality and processingLevels of polycyclic aromatic hydrocarbons (PAHs) in smoked and sun-dried fish samples from areas in Lake Victoria in Mwanza, Tanzania
2018
determine the concentrations of PAHs in smoked and sun-dried fish samples from areas in Lake Victoria in Mwanza region, TanzaniaCompletedJK Nyerere University of Agriculture and TechnologyMahugija, J. A. M., Njale, E. JournalThere is a need to find alternative ways of preserving fish other than the traditional smoking techniques https://www.sciencedirect.com/science/article/abs/pii/S0889157518305842?via%3Dihub
TAFIRIFish biology The origin and future of an endangered crater lake endemic; phylogeography and ecology of Oreochromis hunteri and its invasive relatives (2018b)
2018
To reconstruct the phylogeography of the native and the recent colonizations; and investigate the ecology and ecomorphology of ala four cichlid species in Lake Chala, as well as the Oreochromine cichlids of the upper Pangani/Ruvu drainage for understanding if and how niches are partitioned between the endemic and the invasive speciesCompletedSwiss National Science Foundation Grant No. 31003A_144046 Moser, F.N., van Rijssel, J.C., Ngatunga, B., Mwaiko, S., Seehausen, OJournalThe study provided evidence for the presence of three endemic and three invasive Oreochromis species in the upper Pangani drainage (Nyumba ya Mungu Reservoir, Ruvu River and Lake Chala) and proposed https://doi.org/10.1007/s10750-018-3780-z
TAFIRIFisheries EcologyCompeting for kayabo: gendered struggles for fish and livelihood on the shore of Lake Victoria (2018)
2018
To describe why and how local Tanzanian women kayabo traders have over time been maneuvered in marginal positions. CompletedThe Netherlands Organization for Scientific Research (NWO – WOTRO, a science for global development) grant W01.65.304.00. Modesta Medard, Han van Dijk and Paul Hebinck JournalTanzanian women engaging in kayabo trade are excluded from the decision-making processes, access to fish resources, financial capital, and negotiation power https://doi.org/10.1007/s40152,019,00146,1
TAFIRIAquacultureThe origin and future of an endangered crater lake endemic; phylogeography and ecology of Oreochromis hunteri and its invasive relatives (2018b)
2018
To reconstruct the phylogeography of the native and the recent colonizations; and investigate the ecology and ecomorphology of ala four cichlid species in Lake Chala, as well as the Oreochromine cichlids of the upper Pangani/Ruvu drainage for understanding if and how niches are partitioned between the endemic and the invasive speciesCompletedSwiss National Science Foundation Grant No. 31003A.144046 Moser, F.N., van Rijssel, J.C., Ngatunga, B., Mwaiko, S., Seehausen, OJournalThe study provided evidence for the presence of three endemic and three invasive Oreochromis species in the upper Pangani drainage (Nyumba ya Mungu Reservoir, Ruvu River and Lake Chala) and proposed https://doi.org/10.1007/s10750.018.3780.z
TAFIRIClimate change & environmentLand Cover, Land Use, and Climate Change Impacts on Endemic Cichlid Habitats in Northern Tanzania
2017
To examine the Land Use and Cover Change from satellite imagery over the 1984–2015 period for three freshwater habitats of endemic cichlids and summarize putative climate and landscape stressors including population growth and forecasted climate change.CompletedNatural Sciences and Engineering Research Council Kalacska, M., Arroyo-Mora, J.P., Lucanus, O., and Kishe-Machumu, M. A.JournalWithout protection, the observed trends of decreasing natural vegetation surrounding the aquatic habitats are likely to intensify throughout Tanzania due to large population growth and resulting increases in food demands. Deducing the main stressors acting upon the habitats of aquatic species may allow for the development of mitigation measures, the refinement of regional development plans, or the adoption of new paradigms in the management and protection of aquatic habitats www.mdpi.com/journal/remotesensing
TAFIRIAquatic ecosystems & BiodiversityVisual adaptation in Lake Victoria cichlid fishes: depth-related variation of color and scotopic opsins in species from sand/mud bottoms
2017
To identify factors driving genetic and functional diversity of long-wavelength-sensitive opsin for Lake Victoria cichlids occurring turbid waters. This study was intended to identify: 1) opsin genes with fixed genetic differences 2) their functional differences, and 3) the adaptive role of the opsin pigments.CompletedJSPS KAKENHI Grant Number JP21227002, JP23570269,Yohey Terai, Ryutaro Miyagi, Mitsuto Aibara2, Shinji Mizoiri, Hiroo Imai, Takashi Okitsu, Akimori Wada, Shiho Takahashi-Kariyazono, Akie Sato, Herbert Tichy, Hillary D. J. Mrosso, Semvua I. Mzighani, and Norihiro OkadaJournalWater clarity influences mate choice and hence maintenance of species diversity. It also influences resource partitioning. To ensure both effects water quality management for Lake Victoria should be one of the mainstream activities in the lake’s resource management https://doi.org/10.1186/s12862-019-1387-2 https://doi.org/10.1186/s12862-017-1040-x
TAFIRISocio-economics & MarketingClosing Loopholes with the small scale fisheries Guidelines: addressing illegal, unreported and unregulated fishing in Lake Victoria
2017
To examine the whole system (natural system, social system and governing system) of lake and how it contributes to persistent illegal, unreported and unregulated fishingCompletedSocial Sciences and Humanities Research CouncilJoseph Luomba, Ratana Chuenpagdee, Paul OnyangoBook ChapterSingle gear regulations need to be reviewed to reflect the diversity, complexity and dyamics in the natural system (fisheries resources) https://link.springer.com/chapter/10.1007/978-3-319-55074-9_25
TAFIRISocio-economics & MarketingClosing Loopholes with the small scale fisheries Guidelines: addressing illegal, unreported and unregulated fishing in Lake Victoria
2017
To examine the whole system (natural system, social system and governing system) of lake and how it contributes to persistent illegal, unreported and unregulated fishingCompletedSocial Sciences and Humanities Research CouncilJoseph Luomba, Ratana Chuenpagdee, Paul OnyangoBook ChapterSingle gear regulations need to be reviewed to reflect the diversity, complexity and dyamics in the natural system (fisheries resources) https://link.springer.com/chapter/10.1007/978-3-319-55074-9_25
TAFIRISocio-economics & MarketingClosing Loopholes with the small scale fisheries Guidelines: addressing illegal, unreported and unregulated fishing in Lake Victoria
2017
To examine the whole system (natural system, social system and governing system) of lake and how it contributes to persistent illegal, unreported and unregulated fishingCompletedSocial Sciences and Humanities Research CouncilJoseph Luomba, Ratana Chuenpagdee, Paul OnyangoBook ChapterSingle gear regulations need to be reviewed to reflect the diversity, complexity and dyamics in the natural system (fisheries resources) https://link.springer.com/chapter/10.1007/978-3-319-55074-9_25
TAFIRIAquatic ecosystems & BiodiversityDiet dynamics and feeding strategies of Hilsa kelee (Cuvier, 1829) and Valamugil buchanani (Bleeker, 1853) in the Pangani Estuary, Tanzania: Insights from stomach contents and fatty acid biomarkers
2017
To: (a) describe the diets and feeding niches of Hilsa kelee and Valamugil buchanani in the Pangani estuary; and (b) analyze fish feeding strategies by using their dietary and FA compositions.CompletedUnited Republic of Tanzania through the Tanzania CAlistidia P. Mwijage, Daniel A. Shilla and John F. MachiwaJournalValamugil buchanani presented higher efficiency of opportunistic omnivore and high degree of resilience to anthropogenic disturbances relative to H. kelee in the estuarine feeding and nursery grounds. The initiatives of conserving the nursery grounds of Pangani estuary should give priority to the species like H. kelee that exhibit low degree of resilience upon anthropogenic disturbances. https://www.ajol.info/index.php/wiojms/article/view/164787
TAFIRIAquatic ecosystems & BiodiversityResponses of biological productivity and fisheries to changes in atmospheric and oceanographic conditions in the upwelling region associated with the East African Coastal Current (PEACC)
2017
To determine the responses of biological productivity and fisheries to changes in upwelling conditions associated with changes in atmospheric and oceanographic processes in the EACC shelf area of Kenya and Tanzania, and the corresponding vulnerability, resilience and adaptation options of the coastal fisheries dependent communities. The specific objectives of the project are as followsCompletedThe Marine and Coastal Science for Management (MASMahongo/SekadendeProjectsThrough the PEACC Project, new scientific knowledge has been generated and presented in the special issue that would better inform policy and decision making for improved management and governance of small pelagic fisheries resources. The PEACC project has also provided valuable baseline data and information that can be utilized in future related research
TAFIRIAquaculturePrevalence of extended spectrum Beta lactamase (ESBL) producing Escherichia coli in an integrated agro-aquaculture system in Morogoro, Tanzania
2017
To assess the effects so pond management practices in relation to distribution of ESBL genes isolated E. coli in Integrated aquaculture system (IAA); To determine the prevalence of ESBL producing E. coli in IAA system and establish genetic diversity of ESBL genes isolated in IAA systemCompletedTraining and Research in Aquatic Health for Eastern and Southern Africa (TRAHESA)Sophia ShabanMSc thesisFurther studies should be carried on this area of ESBL genes in aquaculture as they can adversely affect the growth aquaculture sector and fish health at large www.suaire.suanet.ac.tz
TAFIRISocio-economics & MarketingSocio-economic Factors Affecting Consumer Behaviour and Preference for Farmed and Wild Fish around Lake Victoria, Tanzania
2017
To examine the consumer behaviour and preference for farmed and wild fish within the Lake Victoria region in TanzaniaCompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECAMwanahamis Salehe, Joseph Luomba, Enock MlaponiJournalFish producers, processors and marketers around the Lake Victoria in Tanzania should consider socioeconomic diversities of their consumers when designing and developing the fish products. https://www.ajol.info/index.php/ajthf/article/view/172888
TAFIRIAquatic ecosystems & BiodiversitySustainable Oceans, Livelihoods and food Security Through Increased Capacity in Ecosystem research in the Western Indian Ocean
2017
Using robotics, modelling, remote sensing, field observations and socio-economic studies, to identify key environmental and anthropogenic drivers of the main fish species in the Pemba Channel Tanzania, and to address climatic pressures on this fisheryIn progressthe UK Global Challenges Research Fund (GCRF)Baraka C SekadendeProjectsResearch in progress http://www.solstice-wio.org/
UDSMFisheries Information SystemsHistorical trends in fisheries management
2017
To generate information of the biology and ecology of the lake CompletedWorld Bank, EU, IUCN, and Sida-SARECHoza, RBJournalThere is need for a multi-sectoral and interdisciplinary approach involving all sakeholders in trying to restore the quality of the waters of Lake Victoria https://doi.org/10.1007/978-3-319-69656-0_9
TAFIRIStock Assessment & Fisheries StatisticsStock Assessment of Commercial Fish Species of Lake Victoria. In: Mgaya Y., Mahongo S. (eds) Lake Victoria Fisheries Resources. Monographiae Biologicae, vol 93. Springer, Cham
2017
To investigate the current status of the fisheries of the four major commercial fish species i.e. Lates niloticus, Oreochromis niloticus, Ratrineobola argentea and Haplochromine species in Lake Victoria CompletedHEST; LVFRP I; LVFRP II; LVEMP I; LVEMP IIKayanda R.J., Chande A.I., Mgaya Y.D., Mlaponi E., Mkumbo O.C.Book ChapterEstablishment of aquatic parks in nursery ground and bays which identified during LVEMP I Project should be implemented This would protect the juveniles, which are usually caught using illegal fishing gears (small meshed nets); Little is known about habitat utilisation by the Nile perch in Lake Victoria. There is need to investigate and establish the type of of habitats that preferred by the Nile perch for feeding and breeding grounds. The information generated through such investigations will be directly related to establishing closed areas and seasons for fishing; Studies on the relationship between environmental parameters and fisheries should be strengthened. This would assist in deciding when and whereto close the fishery; Gillnet fishery needs to be investigated, as passive gillnets or towed or single triple mounted gillnets have different influences on the catch per unit of effort. Even the number of gillnet units has some effect on stocks; Studies on the effect of processing plants on the stocks of the Nile perch need to be conducted. https://doi.org/10.1007/978-3-319-69656-0_6
UDOMAquacultureEffects of blood meal as a substitute for fish meal in the culture of juvenile Silver Pompano Trachinotus blochii (Lacepède, 1801) in a circulating aquaculture system
2017
To evaluate the effects of different levels of fish meal replacement with fermented and unfermented blood meals on growth performance of juvenile silver pompano.CompletedSIDA and WIOMSA.Salum S. HamedJournalNeed to commercialize the technology for pompano culture, utilizing locally available sources of protein. https://www.ajol.info/index.php/wiojms/article/view/149116
TAFIRIAquaculturePhytoplankton and food selectivity in Nile tilapia reared in earthen ponds under monoculture and polyculture with African sharptooth catfish
2017
To evaluate phytoplankton composition and abundance in ponds and stomachs of O. niloticus cultured in monoculture and polyculture with C. gariepinus in semi-intensive earthen ponds.CompletedInter-University Council for East Africa (IUCEA) through Lake Victoria Research Initiative (VicRes)A.S. Mbonde, S. M. Limbu, A. P. Shoko and Y. D. Mgaya JournalSelective feeding behaviour in O. niloticus does not alter its growth performance in the two culture systems. Fish farmers can practice either monoculture or polyculture of O. niloticus without affecting its food selectivity. https://www.researchgate.net/publication/317240586
SUAFish biology Prevalence of Extended spectrum Beta lactamase (ESBL) producing Escherichia coli in an integrated agro-Aquaculture system in Morogoro, Tanzania
2017
To assess the effects so pond management practices in relation to distribution of ESBL genes isolated E.coli in Integrated aquaculture system (IAA). Also to determine the prevalence of ESBL producing E.coli in IAA system and establish genetic diversity of ESBL genes isolated in IAA system. CompletedTraining and Research in Aquatic Health for Eastern and Southern Africa (TRAHESA)Sophia ShabanMSc thesisFurther studies should be carried on this area of ESBL genes in aquaculture as they can adversely affect the growth aquaculture sector and fish health at large. www.suaire.suanet.ac.tz
TAFIRIFisheries Information SystemsDEVELOPMENT AND USE OF AN ELECTRONIC FISH CATCH ASSESSMENT (ECAS) SYSTEM FOR THE AFRICAN GREAT LAKES
2017
Development is finished, All the modules has already incorporated. Insert Data Module is Completed on APP and Portal ,The Setting Module is Also ready on APP and Module, The module for Reporting, Summary and Statistics which are developed, and training has finishedCompletedTNC,WWF,LVFO-GIZ, DSFAInnocent E. Sailale, Hillary D. Mrosso, Baraka L. KuguruProjectsThe eCAS system is designed to accommodate different fisheries surveys. The problem of fisheries data being available in discrete databases can be resolved by using the eCAS system. Tanzania Mainland has adopted eCAS as the National Fisheries Information Platform (FIP). FIP will be used as one-stop fisheries Data Centre for capturing, storage and reporting on the whole range of fisheries and related data (Frame Survey, Vessel registration, fish exports, fisheries revenue, aquaculture, fisheries socio-economics) in a synchronous fashion. This will solve the problem of reporting differently on the same question as a result of use of different databases in the same sector. For example, capture and aquaculture fish production data, import and export, socio-economic dynamics, export and import data fishing effort are all rational related data for calculating the contribution fisheries sector into country GDP. Unfortunately, these datasets are frequently incongruent hence the need for all data to be integrated in the same database in different modules. Thus, querying for sector reports will be simplified, and the running cost of different database will be cut down and report production will be timely, enhanced and harmonized. eCAS architecture (implemented as FIP) was designed to accommodate all the surveys. The database modules can allow different department to use eCAS for data collection, reporting and sharing between departments within the sector. Transforming eCAS into FIP will involve upscaling and data migration. Upscaling eCAS to cover other departments and training is estimated to cost USD 100,000. The training will be conducted for data collectors, supervisors and managers. Data migration will include assembling of existing data in the different departments and uploading into FIP. Migration of existing data is estimated at USD 50,000 https://smartcas.net
TAFIRIFish biology The food and feeding habits of the Delagoa threadfin bream, Nemipterus bipunctatus (Valenciennes, 1830), from the coastal waters around Dar es Salaam, Tanzania
2017
To determine the diet composition (major trophic groups) of N. bipunctatus and its intra-population variation in the coastal waters of Dar es Salaam. CompletedWorld Bank- MACEMP PROJECTSululu JS., Ndaro SG and Kangwe SJ JournalThis study provided an understanding of the nutritional needs of this species and its interactions with other organisms in the environments. https://www.wiomsa.org/publications-2/wio-journal-of-marine-science/
TAFIRIAquaculturePhytoplankton and food selectivity in Nile tilapia reared in earthen ponds under monoculture and polyculture with African sharptooth catfish
2017
Determination of Phytoplankton and food selectivity in Nile tilapia reared in earthen ponds under monoculture and polyculture with African sharptooth catfishCompletedLake Victoria Research Initiative (VicRes)Mbonde, A. S., Limbu, S. M., Shoko, A. P. and Mgaya, Y. D.Journal Fish farmers can practice either monoculture or polyculture of O. niloticus without affecting its phytoplankton food selectivity https://www.researchgate.net/profile/Samwel_Limbu/publication/317240586_PHYTOPLANKTON_AND_FOOD_SELECTIVITY_IN_NILE_TILAPIA_REARED_IN_EARTHEN_PONDS_UNDER_MONOCULTURE_AND_POLYCULTURE_WITH_AFRICAN_SHARPTOOTH_CATFISH/links/592e2c8a45851553b6533cb2/PHYTOPLANKTON-AND-FOOD-SELECTIVITY-IN-NILE-TILAPIA-REARED-IN-EARTHEN-PONDS-UNDER-MONOCULTURE-AND-POLYCULTURE-WITH-AFRICAN-SHARPTOOTH-CATFISH.pdf
TAFIRIAquacultureAquaculture and Fisheries Extension
2017
To review and synthesis the work done under LVEMP on Aquaculture and Fisheries ExtensionCompletedLake Victoria Environmental Management Project (LVEMP)Shoko, A.P., Mgaya, Y.D., Limbu, S.M. and Hoza, R. Book ChapterFish farming could help to reduce fishing pressure on capture fisheries in Lake Victoria and contribute significantly to the conservation of the lake’s biodiversity. Ultimately, fish farming will generate income for the people, which is in line with the government’s efforts to alleviate poverty in the country. https://doi.org/10.1007/978-3-319-69656-0_7
TAFIRIAquacultureMwongozo wa Mseto wa Ufugaji Samaki, Kuku na Kilimo cha Mboga Mboga.
2017
To prepare guideline booklet (in Kiswahili language) for integrated aquaculture CompletedBuilding Stronger University Project funded by DANIDA; EPINAV project funded by the Government of Norway, Marine Science Program funded by SIDA, Microfinance Support Program funded by UNDP and The Government of United Republic of Tanzania through Tanzania Commission for Science and Technology (COSTECH)Lamtane, H.A., Shoko, A.P., Madalla, N. A., Limbu, S.M., Ulotu, E. R., Lugomela, C.V., Nyomora, A.M.S., Kitula, R., Onyango, P.O., Bwathondi, P.O.J., Mmochi., A. Ngoile, M. naMmochi, A. J. BookMwomgozo huu utasaidia kuimarisha ufugaji mseto wa samaki, Kuku na Kilimo cha Mboga Mboga
TAFIRIFisheries Information SystemsStrengthening Research and Proposal Writing Skills at Academic Institutions in Tanzania, Embedding Activities at TAFIRI Tanzania
2017
Undertake both online and face to face trainings on research and proposal writing skills to TAFIRI researchersCompletedAuthorAID/International Network for Advancing Science and Policy (INASP)Shoko, A. P. and Kimirei, I. A. ProjectsResearchers in research institutions in developing countries improve research and proposal writing skills through introducing online courses, particularly in conjunction with face-to-face workshops.
UDSMFish quality and processingFish Quality Assurance
2017
To enforce quality assurance measures and increase public awareness on fish quality assurance issues in accordance with the relevant national laws and regulationsCompletedUDSMLukanga, S. A., & Mgaya, Y. D.BookFish exportation increases with increased quality and standards and safety assurance measures or programmes in place https://link.springer.com/chapter/10.1007/978-3-319-69656-0_13
TAFIRIFisheries Information SystemsTerrestrial-focused protected areas are effective for conservation of freshwater fish diversity in Lake Tanganyika (2017)
2017
To investigate the benefits of terrestrial-focused protected areas on the alpha and beta taxonomic and functional diversity of the diverse endemic rocky-shore cichlid fishes in Lake TanganyikaCompletedNERC grants NE/L009005/1 and NE/L002485/1, and a Percy Sladen Memorial Fund grant.Britton, A.W., Day, J.J., Doble, C.J., Ngatunga, B.P., Kemp, K.M., Carbone, C., Murrell, D.JJournalFreshwater protected areas are likely protecting cichlid diversity from the detrimental effects of pollution and sedimentation. https://doi.org/10.1016/j.biocon.2017.06.001
TAFIRIFish biology Diet dynamics and feeding strategies of Hilsa kelee (Cuvier, 1829) and Valamugil buchanani (Bleeker, 1853) in the Pangani Estuary, Tanzania: Insights from stomach contents and fatty acid biomarkers (2017).
2017
To: (a) describe the diets and feeding niches of Hilsa kelee and Valamugil buchanani in the Pangani estuary; and (b) analyze fish feeding strategies by using their dietary and FA compositions.CompletedUnited Republic of Tanzania through the Tanzania Commission for Science and Technology (COSTECH)Alistidia P. Mwijage, Daniel A. Shilla and John F. MachiwaJournalValamugil buchanani presented higher efficiency of opportunistic omnivore and high degree of resilience to anthropogenic disturbances relative to H. kelee in the estuarine feeding and nursery grounds. The initiatives of conserving the nursery grounds of Pangani estuary should give priority to the species like H. kelee that exhibit low degree of resilience upon anthropogenic disturbances. https://www.ajol.info/index.php/wiojms/article/view/164787
TAFIRIFish biology Fish Biology and Life History Indicators. In: Mgaya, Y.D. and Mahongo, S.B. (Editors), Lake Victoria Fisheries Resources: Research and Management in Tanzania
2017
To examines the life history indicators of three commercial fish species in Lake Victoria, namely Nile perch (Lates niloticus), Nile tilapia (Oreochromis niloticus) and the cyprinid known as ‘Dagaa’ (Rastrineobola argentea). CompletedKatunzi, E.F.B.; Mgaya, Y.D.; Mkumbo, O.C.; Limbu, S.M.An ecosystem approach guided by a precautionary principle is required in order to manage the fishery resources in Lake Victoria and to ensure their sustainabilityBookAn ecosystem approach guided by a precautionary principle is required in order to manage the fishery resources in Lake Victoria and to ensure their sustainability http://hdl.handle.net/20.500.11810/5238
TAFIRIAquatic ecosystems & BiodiversityTemporal patterns in phytoplankton, zooplankton and fish composition, abundance and biomass in Shirati Bay, Lake Victoria, Tanzania (2017).
2017
To investigate the composition, abundance and biomass of phytoplankton and zooplankton in Shirati Bay in relation to fish species catch composition and biomassCompletedRussell E. Train Education for Nature Program, World Wide Fund for Nature (WWF) and Tanzania Fisheries Research Institute (TAFIRI) Revania K. Waya, Samwel M. Limbu, Godfrey W. Ngupula, Chacha J. Mwita and Yunus D. MgayaJournalThe fish biomass, zooplankton and phytoplankton in Shirati Bay exhibited a typical predator–prey inverse relationship. Thus, phytoplankton and zooplankton should be included as mandatory groups, meriting consideration by fishery managers during fish stock assessments to more effectively manage the bay’s fishery resources. https://doi.org/10.1111/lre.12161
TAFIRIFish biology Multiple colonisations of the Lake Malawi catchment by the genus Opsaridium (Teleostei: Cyprinidae) (2017)
2017
To assess if the river spawning cyprinids of the genus Opsaridium in the Lake Malawi catchment represent a monophyletic radiation, or have instead colonised the lake independentlyCompletedCommonwealth Scholarship MWCS-2012-249 and Royal Society-Leverhulme Trust Africa Awards AA100023 and AA130107Sungani, H., Ngatunga, B.P., Koblmueller, S., Maekinen, T., Skelton, P.H., Genner, M.J.JournalThe findings revealed that three Opsaridium species have colonised the Lake Malawi catchment independently; and Congo river system is major source of diversity for African chedrins. Further resolution of the phylogeny of the African chedrin clade will help to improve our understanding of the role of Congo system in acting as a source of diversity within East and Southern Africa. https://doi.org/10.1016/j.ympev.2016.09.027
TAFIRIFisheries EcologyLake Victoria Fisheries Resources: Research and Management in Tanzania
2017
Understanding like Victoria fisheryCompletedLVEMP 1 and University of Dar es salaamMgaya YD, Mahongo S BookTo increase capacity of resource user and information dissimination https://doi.org/10.1007/978-3-319-69656-0
TAFIRIFisheries EcologyHistorical Perspectives and Trends in Fisheries Research in Tanzania
2017
ReviewCompletedNot specifiedKatunzi EFB, Onyango PO, Mahongo SB, Kishe-Machumu MA, Rijssel J C, Kayanda RS, Mgaya YD (2017)Book ChapterThe introduction of the Nile perch was meant to utilize the abundant haplochromines that were considered commercially unimportant, and to extend fishing operations from the inshore to deeper offshore waters. Mgaya Y, Mahongo S (eds) Lake Victoria Fisheries Resources: Research and Management in Tanzania. Monographiae Biologicae, 93: 11-35. vol 93. Springer, Cham. https://doi.org/10.1007/978-3-319-69656-0_2.
TAFIRIClimate change & environmentEnvironmental Changes in the Tanzanian Part of Lake Victoria
2017
ReviewCompletedNot specifiedI. A. Kimirei, M. Semba, C. Mwakosya, Yunus D. Mgaya, Shigalla B. MahongoBook Chapter Appropriate measures to improve land use management should therefore be taken, while deliberate dumping of industrial, municipal and agricultural wastes into the lake should be controlled Mgaya Y, Mahongo S (eds) Lake Victoria Fisheries Resources: Research and Management in Tanzania. Monographiae Biologicae, 93: 37-59. vol 93. Springer, Cham. https://doi.org/10.1007/978-3-319-69656-0_3.
TAFIRISocio-economics & MarketingFinancing Mechanisms for Lake Victoria Fisheries Management
2017
ReviewCompletedNot specifiedMosha EJ, Mahongo SB, Hoza RB, Mgaya YD JournalThis chapter therefore presents the chronology of events that led to the establishment of LVFTF, and describes the rationale, organizational structure and functions of the Fund. Mgaya Y, Mahongo S (eds) Lake Victoria Fisheries Resources: Research and Management in Tanzania. Monographiae Biologicae, 93: 37-59. vol 93. Springer, Cham. https://doi.org/10.1007/978-3-319-69656-0_3.
TAFIRIAquatic ecosystems & BiodiversityBiodiversity Indicators: Plankton and Macroinvertebrates in Lake Victoria, Selected Satellite Lakes and Rivers
2017
This chapter assesses the changes in the diversity, abundance and distribution of plankton and macroin- vertebrates in the inshore and offshore areas of Lake Victoria, selected satellite lakes and rivers within the lake basin. CompletedWorld Bank (GEF/IDA) through LVEMP I.Mgaya, Y.D., S.M. Limbu, C.V. Lugomela, I.A. Kimirei, R.J. Kayanda and G.W. Ngupula. 2017 Biodiversity Indicators:JournalThe occurrence of a relatively high abundance of low oxygen tolerant zooplank ton taxa at inshore stations is an indication of deteriorating water quality due to eutrophication and pollution processes especially around near shore areas of the lake. The identification and mapping of sources of pollutants needs to be carried out and control measures (i.e. provision and enforcement of chemical/nutrient standards of effluents to waterways and the lake) must be instituted in order to mitigate the pollution of the lake waters and thereby protect the valuable living resources in the main lake and satellites in the basin. http://hdl.handle.net/20.500.11810/5239
TAFIRIStock Assessment & Fisheries StatisticsFisheries Statistics for Lake Victoria, Tanzania. In: Mgaya, Y.D. and Mahongo, S.B. (Editors), Lake Victoria Fisheries Resources: Research and Management in Tanzania. Springer, Switzerland, pp. 241 to 253.
2017
The chapter analyse the time series fisheries statistics data mainly from Frame Surveys, Catch Assessment Surveys and Fisheries Annual Statistics Reports for Lake Victoria from 1967t0 2016. Data were collected from the Fisheries Development Division in Tanzania. These surveys and reports comprised relevant information and data on fish catches and fishing effort.CompletedWorld Bank (GEF/IDA) through LVEMP I.Sobo, F., Y.D. Mgaya, R. Kayanda and M. Semba. Book ChapterAs the fisheries statistics show an increase in fishing pressure over the years, it is evident that there is a sign of overfishing. For that matter, effective fisheries management is needed for the three riparian states to safeguard the sustainable use of fishery resources in the lake and to provide data that can be used in the evaluation of the fisheries objectives. https://doi.org/10.1007/978.3 319.69656.0 .12
UDSMAquacultureSpirulina (Arthrospira fusiformis (Voronich.) Kom.&Lund 1990) culture and its use as a protein for Rufiji tilapia (Oreochromis urolepis urolepis Norman, 1922) Mariculture.
2016
Determine a suitable culture medium for spirulina and use the cultured spirulina as a potential protein source in diets for Rufiji tilapiaCompletedBilateral Marine Science Programme supported by SidaDeogratias MulokoziMSc thesisa) Urea could be good nitrogen source in culture media for Momella lake’s Spirulina. b) It appears that the Momella Lake’s spirulina may be an appropriate growth-stimulating plant protein when used as a feed additive in Rufiji tilapia mariculture
UDSMStock Assessment & Fisheries Statistics“Abundance, Distribution and Reproductive Biology of Two Selected Penaeid Prawns in Tanzanian Waters”
2016
To assess the shallow water prawn species composition, abundance and distribution by site, zones, depth and season CompletedSidaDr Catherine MwakosyaPhD thesisThe study observed high exploitation levels at the two land-based sites (Bagamoyo and Nyamisati) with a slight improvement in the catch rates, which is an indicator of slow recovery of the stock. Consequently, a management strategy of extending the closed season to include the artisanal fishers’ grounds is recommended. University of Dar es Salaam
TAFIRIStock Assessment & Fisheries StatisticsStock Assessment, Spatial and Temporal Evaluation of Tanzania Mainland Octopus
2016
To provide information on the stock status of the octopus fishery in marine waters of Mainland Tanzania including their abundance, distribution and population dynamicsCompletedNEPADKishe, M. A. and Ngatunga, B. P.Technical ReportThe size limit of 0.5 kg should be maintained; Fishing effort especially scuba diving should be reduced during the spawning month of October; Rotational fishery or seasonal closures of reef areas as a tool for the sustainable management of the octopus fishery are recommended; All fish associated with reefs are vulnerable to the fishery of O. cyanea, therefore reef fishery management should be in place
TAFIRIFisheries EcologyChanging ecology of Lake Victoria cichlids and their environment: evidence from C13 and N15 analyses
2016
Using formalin preserved cichlid species caught over the past 35 years to investigate whether stable isotopes are reflecting the dietary changes, habitat differences and if those isotopes can be used as indicators of eutrophicationCompletedNWO, WOTRO Netherlands’ Ministry of Development Cvan Rijssel, J. C., Hecky, R. E., Kishe-Machumu, M. A., Witte, F.JournalStable isotopes of the haplochromines reflecting variation in primary production and varying degrees of eutrophication over the last several decades, thus, haplochromines could serve as indicators of eutrophication. The findings confirms previous findings that museum specimens can be used to trace historical changes in fish ecology and the aquatic environment. This highlights the need for continued sampling of fish and other aquatic organisms important to fish feeding to reconstruct and predict environmental changes in aquatic ecosystems DOI 10.1007/s10750-016-2790-y
TAFIRISocio-economics & MarketingArtisanal tuna and tuna like species fisheries trade flow in the United Republic of Tanzania. Report submitted to WWF Tanzania Country Office.
2016
The objectives of this study include were: a) Identifying the main routes, of the artisanal tuna fisheries products from the main landing sites to the fish consumers centers (fish markets, hotels, fishmongers, supermarkets, etc.) within, and eventually outside the country of origin; b) Identifying the main actors of the supply chain, including gender roles and responsibilities at key locations associated with its marketing; c) Assess the amount/volume traded, along the supply chain, per species, if possible, and the financial flows, from the landing sites to the consumption centers; d) Identify the main challenges; and ways to secure engagement of the main players in potential market incentives schemes for promoting sustainable fishing.CompletedConsultancy report to WWF Tanzania Country Office Dr. Paul Onyango Dr Magnus Ngoile Dr Mathias Igulu Ms. Bigeyo KubojaTechnical ReportThis report discusses tuna and tuna-like species trade flow in Tanzania. It has estimated the volume traded, the gears used in fishing and the districts where tuna fishing takes place. Although the figures presented looks way beyond what was expected, the report’s findings show that tuna fisheries trade nets billions of Tanzania shillings to the country’s economy but these figures go unnoticed and unrecorded. To manage and build on this wealth that tuna generates it is important to take deliberate efforts to improve management of this species. Fisheries authorities should focus attention on: - Fishers should be enabled to acquire fishing gears and equipment that can make them maneuver their way into the rough ocean as this can make them increase their catches. Trade infrastructure such as markets and market information are important to improve trade flow. This will require looking at both the supply and demand challenges issues related to prices and storage of tuna. The government should consider re-examining whether Hook and line is still relevant to catch tuna and tuna-like species.
TAFIRISocio-economics & MarketingA bottom-up understanding of Illegal, Unreported and Unregulated fishing in Lake Victoria
2016
To explore the level of agreement or dissimilarity of fisheries stakeholders´ judgement about IUU fishing in Lake VictoriaCompletedToo Big To Ignore (TBTI)Joseph Luomba, Ratana Chuenpagdee, Andrew SongJournalReview of fisheries regulatory measures to match with the natural and social system’s needs. https://www.mdpi.com/2071-1050/8/10/1062/htm
UDSMFish biology Seasonal variations in the proximate compositions of five economically-important fish species from Lake Victoria and Lake Tanganyika, Tanzania
2016
To determine seasonal variations in the proximate contents of Lates niloticus, Oreochromis niloticus, Rastrineobola argentea, Limnothrissa miodon and Stolothrissa tanganicaeCompletedUmaru Musa Yar,adua University (UMYU), Katsina StaB. AbdulkarimJournalThe five fish species are desirable source of proteins hence are important for normal growth, development and as a remedy to nutritional and health related problems. https://www.ajol.info/index.php/bajopas/article/view/139675
UDSMAquatic ecosystems & BiodiversityCarbon stocks in the small estuarine mangroves of Geza and Mtimbwani, Tanga, Tanzania.
2016
to (i) characterise the tree composition and structure; (ii) estimate the carbon stocks; and (iii) demonstrate the potential for community-based carbon market schemes.CompletedBilateral Marine Science Programme supported by SiEdmond AlavaishaJournal(a) permanent plots should be established for MRV of additionality in terms of health and carbon stocks; (b) vulnerability assessment and monitoring should be done to assess mangrove cover changes over time and predict extents of human impacts on mangroves; (c) collaborative management should be strengthened by harmonising rules and regulations across stakeholders; (d) detailed studies should be done to investigate whether existing governance mechanism can favour initiation of carbon market schemes https://doi.org/10.1155/2016/2068283
TAFIRIAquacultureGrowth Performance of Nile tilapia and African Catfish fed on rations formulated from locally available feed resources, Tanzania
2016
To assessed the palatability and effect of home-made feed ration on growth performance of Nile Tilapia (Oreochromis niloticus) and the African catfish (Clarias gariepinus)CompletedAssociation for Strengthening Agricultural ResearcKashindye, B.B., Elison, M., Kayanda, R., Mlaponi, E. and Musiba M.J.JournalBull. There is need for further research to evaluate among others the amino acid profile, digestibility and the possible anti-nutritional factors of the feed The Bulletin of Animal Health and Production in Africa, (2016), 9 - 17
TAFIRISocio-economics & MarketingIllegal, Unreported and Unregulated (IUU) Fishing as a Governability Problem: A Case Study of Lake Victoria, Tanzania
2016
To examine why IUU fishing has persisted in Lake Victoria, despite the strategies directed at its alleviation and to discuss alternative approaches, which may be helpful to alleviating IUU fishingCompletedSocial Sciences and Humanities Research CouncilJoseph LuombaMSc thesisIUU fishing is a ´wicked´ problem that tackling it requires mutual interaction of both the social system-to-be-governed and the governing system https://research.library.mun.ca/12424
TAFIRIFish biology Bioaccumulation of heavy metals in marine fishes (Siganus sutor, Lethrinus harak, and Rastrelliger kanagurta) from Dar es Salaam Tanzania
2016
To (i) determine the extent of metal contamination in three commercial marine fish species (Siganus sutor, Lethrinus harak, and Rastrelliger kanagurta) in Dar es Salaam, Tanzania and assess their associated potential human risk; (ii) assess the use of a fish fin as a suitable organ for non-destructive/non-invasive monitoring of heavy metal contaminationCompletedVLIR-OUSPrisca MzirayMSc thesis(i) The levels of arsenic (As) in fish muscles of L. harak and R. kanagurta were above the FAO/WHO maximum levels for contaminants and toxins in foods for human consumption thus future studies should focus more on this issue and should involve assessment from different fish markets and areas (ii) tail fin may not be a very good biomonitoring organ for metal contamination in the three fish species since it can only reliably be used in certain species and with certain (very few) heavy metals https://doi.org/10.1016/j.rsma.2016.05.014
UDSMAquatic ecosystems & BiodiversityTemporal and Spatial variability in Reef fish Density and Biomass within the Dar es Salaam Marine Reserve System, Tanzania
2016
Investigating temporal and spatial variations in reef fish biomass and densityCompletedWIOMSAPagu JuliusMSc thesisDemarcation of the MPA https://www.ajol.info/index.php/wiojms/article/view/149350
UDSMFish biology Fishers Perceptions of the Recurrence of Dynamite-Fishing Practices on the Coast of Tanzania
2016
to investigate the perceptions of fishers on the recurrence of dynamite-fishing activities CompletedEvangelisches StudienwerkRobert Eliakim Katikiro (2016)PhD thesisParticipation of fishers in management https://doi.org/10.3389/fmars.2016.00233
TAFIRIFisheries EcologyStable isotope evidence from formalin–ethanol-preserved specimens indicates dietary shifts and increasing diet overlap in Lake Victoria cichlids
2016
To investigated how the changed environment and diet of the haplochromines influenced stable isotope values of formalin-then-ethanol-preserved cichlid specimens, and then investigated how these values differed among species before (1977–1982) and after substantial environmental changes (2005–2007)CompletedWOTRO, NUFFIC, IFS, the Schure Beijerinck-Popping Fonds and NSERC Discovery Kishe-Machumu, M. A., van Rijssel, J. C., Poste, A., Hecky, R. E., Witte, FJournalStable isotope analyses are a robust tool to study trophic positions and dietary sources, thus, the study supports the possibility of using archived collections to characterize food web structures of aquatic ecosystems at scales of tens to hundreds of years. The study revealed the differences both in d13C and d15N values of the historic ecosystem among haplochromine trophic groups as well as among species in agreement with their diets. DOI 10.1007/s10750-016-2925-1
UDSMAquatic ecosystems & BiodiversityDestructive gear use in a tropical fishery: Institutional factors influencing the willingness-and capacity to change
2016
To empirically assess institutional aspects shaping fishers’ behavior leading to unsustainable resource use, by using the example of destructive drag-net fishing in Zanzibar, Tanzania.CompletedSidaWallner-Hahn, S., Molander, F., Gallardo, G., Villasante, S., Eklöf, J. S., Jiddawi, N. S., & de la Torre-Castro, M.JournalThere is a strong need to acknowledge the importance of normative and cultural-cognitive aspects to understand fisheries dynamics and to be able to tackle current shortcomings like mismanaged and unsustainable fisheries https://www.sciencedirect.com/science/article/pii/S0308597X16304225
TAFIRIAquatic ecosystems & BiodiversityComparing the Performance of Protected and Unprotected Areas in Conserving Freshwater Fish Abundance and Biodiversity in Lake Tanganyika, Tanzania
2016
To assess and compare the differences in fisheries resources between protected and unprotected areasCompletedTanzania National Parks (TANAPA), European Union (EU), and Frankfurt Zoological Society (FZS).Sweke EA, Assam JM, Chande AI, Mbonde AS, Mosha M, Mtui A JournalExtending the park or establishing more other protected areas could certainly enhance biodiversity in the region. Also resources conservation approaches such as protected areas in the region cannot be successful through stringent laws and regulations but by creating awareness of the importance of protected areas among stakeholders http://dx.doi.org/10.1155/2016/7139689
TAFIRIAquacultureGrowth performance of Nile Tilapia and African catfish fed on rations formulated from locally available feed resources, Tanzania
2016
The study assessed the palatability and effect of home-made feed ration on growth performance of Nile Tilapia (Oreochromis niloticus) and the African catfish (Clarias gariepinus)CompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA)Kashindye, B. B., Elison, M., Kayanda, R., Mlaponi, E. and Musiba, M. J. JournalThe two formulated feeds can effectively be used for the rearing of Nile tilapia and African catfish. However, there is need for further research to evaluate among others the amino acid profile, digestibility and the possible anti-nutritional factors of the feeds https://www.au-ibar.org/bulletin-of-animal-health-and-production-in-africa
-Choose-Aquatic ecosystems & BiodiversityExploring the structural and functional properties of the Lake Victoria food web, and the role of fisheries, using a mass balance model.
2016
To understand the structural and functional properties of Lake Victoria food web and the role of fisheries on the ecosystem.CompletedUnited Nations University Fisheries Training Programme (UNU-FTP)Natugonza, V., Ogutu-Ohwayo, R., Musinguzi, L., Kashindye, B. B., Hreidar, S. J., Valtysson, TJournalThe fishing pattern, which is currently not in balance, with exploitation skewed to the low productive species at high TLs. Specifically, the most productive juvenile Nile perch, dagaa, and all haplochromines groups are underexploited, while adult Nile perch, Nile tilapia, catfishes and Marbled lungfish are exploited beyond sustainable threshold. This imbalance, with particular reference to the Nile perch, is abetted by selective fisheries management models, which have not been successful in most small-scale open access fisheries all over the World. This paper suggest moving toward balanced harvest http://dx.doi.org/10.1016/j.ecolmodel.2016.10.002
TAFIRIAquacultureUtengenezaji wa Chakula cha Samaki. Andiko lipo kwenye kitabu cha: Ngupula G. W. ed. Mambo Muhimu ya Kuzingatia katika Ufugaji Bora wa Samaki. Toleo la kwanza: Oktoba 2016.
2016
Mambo muhimu ya kuzingatia wakati wa kuandaa chakula cha samaki kwa kutumia malighafi zinazopatikana kiurahisi yamejadiliwaCompletedTAFIRIKashindye, B. B. na Elison, M.Book ChapterMambo muhimu ya kuzingatia wakati wa kuandaa chakula cha samaki kwa kutumia malighafi zinazopatikana kiurahisi yamejadiliwa TAFIRI
TAFIRIAquatic ecosystems & BiodiversityLake Victoria freshwater biodiversity assessment: A field and taxonomic survey of the fish diversity and their habitats in the upper Kagera satellite lakes, Tanzania
2016
i) To establish a list of occurrence of fish species with emphasis on haplochromine cichlids and other endemic species; ii) To collect and preserve vouchers of all species of haplochromine cichlids for taxonomic and genetic work; iii) To make a broad description of the lake and surroundings, iv) To assess possible threats to freshwater biodiversity in the lakes; v) To identify existing environmental management authorities operating at these lakes; vi) To identify current conservation actions in place and actions recommended; and vi) To identify potential organisations/individuals that might have a future interest in the conservation and sustainable development of the lakes.CompletedIUCN and EAWAGKishe, M. A. & Mwaiko, S.Technical ReportSeveral endemic fish species of very high conservation concern were found in satellite lakes in the Tanzanian Kagera region. The papyrus belts must be very important filters between the lakes and the eroding hills or the river and hence should be protected Management structures should urgently be put in place to control local deforestation and fishing practices. The fact that the lakes are in remote areas the government cannot adequately monitor and enforce the existing fisheries regulations. Therefore, fisheries extension officers should work in collaboration with CMUs in law enforcement.
TAFIRIStock Assessment & Fisheries StatisticsStock Assessment to determine the recovery status of prawns along the Coast of Tanzania
2016
To determine the recovery status of prawns along the Tanzanian CoastCompletedMinistry of Livestock and FisheriesJuma Kangwe, Baraka Kuguru, Catherine Mwakosya, Godfrey Fabiani, Lydia Kapapa, Joseph Sululu, Kim Matola, Happy Peter, Patroba MatikuTechnical Report1) the fishery still remain unhealthy for both commercial and artisanal fishery. 2) human and or natural factors hindered the expected recovery of the prawn stocks management through co-management approach in collaboration with coast fishers (BMU) should be strengthened https://www.tafiri.go.tz
FOREIGN INSTITUTIONFish biology Genetic population structure of the coral reef sea star Linckia laevigata in the Western Indian Ocean and Indo-West Pacific
2016
Determine the genetic population structure and connectivity of L. laevigata in the Western Indian OceanCompletedFonds Wetenschappelijk Onderzoek Vlaanderen (FWO)Otwoma, LM, & Kochzius, M.PhD thesisThe findings of this study support the existence of a genetic break in the Indo-West Pacific https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5087890/
TAFIRIAquacultureSupplemental effects of mixed ingredients and rice bran on the growth performance, survival and yield of Nile tilapia, Oreochromis niloticus reared in fertilized earthen ponds
2016
Determination of growth performance, survival and yield of Nile tilapia, Oreochromis niloticus reared under fertilized earthen ponds and fed on supplemental feeds made of locally available ingredientsCompletedTanzania Commission for Science and Technology (COSTECH)Limbu, S. M., Shoko,A. P., Lamtane,H. A., Kishe-Machumu, M. A., Joram, M. C., Mbonde, A. S., Mgana, H. F. and Mgaya, Y. D.JournalUnder semi-intensive culture conditions, O.niloticus farmers are advised to use rice bran which is readily available for free or at low cost in their localities and fertilize their ponds with cattle manure. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4700041/
TAFIRIAquacultureFish polyculture system integrated with vegetable farming improves yield and economic benefits of small scale farmers
2016
Determination of the role of integrated Aquaculture Agriculture (IAA) in improving yields and economic benefits of small scale farmersCompletedTanzania Commission for Science and Technology (COSTECH)Limbu, S. M., Shoko, A. P., Lamtane, H. A., Kishe-Machumu, M. A., Masanja, C. J., Mbonde, A. S., Mgana, H. F. and Mgaya, Y. D.JournalSmall scale farmers can adopt Integrated Aquaculture Agriculture (IAA) technology to meet the increasing demand of fish and vegetables, stabilize their incomes and diversify food production, consequently improving food security. These benefits will be realized by providing proper training in IAA technology and management skills to small scale farmers. https://onlinelibrary.wiley.com/doi/abs/10.1111/are.13188
TAFIRIAquacultureEffect of stocking density on growth, production and economic benefits of Nile tilapia (Oreochromis niloticus) and African sharptooth catfish (Clarias gariepinus) in Polyculture and Monoculture
2016
Determination of the effect of stocking density on growth, production and economic benefits of Nile tilapia (Oreochromis niloticus) and African sharptooth catfish (Clarias gariepinus) in Polyculture and MonocultureCompletedLake Victoria Research Initiative (VicRes)Shoko, A. P., Limbu, S. M., Mrosso, H. D. J. and Mgaya, Y. D.JournalFish farmers can achieve the highest net yield and economic benefits by culturing O . niloticus and C . gariepinus in polyculture at HSD (90,000 fish hacter) and MSD (60,000 fish hacter) preferably MSD for economic reasons. https://onlinelibrary.wiley.com/doi/epdf/10.1111/are.12463
TAFIRIAquacultureEffect of stocking density on growth performance, survival, production, and financial benefits of African sharptooth catfish (Clarias gariepinus) monoculture in earthen ponds
2016
Determination of the optimal stocking density for attaining high growth performance, survival, production, and financial benefits of African sharptooth catfish (Clarias gariepinus) reared monoculture in earthen pondsCompletedLake Victoria Research Initiative (VicRes)Shoko, A. P., Limbu, S. M. and Mgaya, Y. D.JournalFish farmers can achieve high net yield and financial benefits by stocking African sharptooth catfish C. gariepinus at HSD of 9 fish per square meters https://www.tandfonline.com/doi/abs/10.1080/10454438.2016.1188338
TAFIRIAquacultureImproving overall farm yields through Fish Vegetable-Poultry integration in small scale farmers of Songwe and Mufindi, Iringa, Tanzania
2016
Sensitizing farmers on fish vegetable integration farming systemCompletedLand O’Lakes Shoko, A. P. and Ulotu, E. E.ProjectsFarmers can increase overall farm productivity by integrating fish farming with other on farm activities
SUAAquacultureGrowth performance and economic benefit of nile tilapia (Oreochromis niloticus) and chinese cabbage (Brassica rapachinensis) in aquaculture integration
2016
To evaluate the growth performance and economic benefit of Nile tilapia and Chinese cabbage under integration systemCompletedSUAMlelwa, T. I. T. O.MSc thesisThe contribution of integrated agro-aquaculture in farm productivity and income is of high importance. http://www.suaire.sua.ac.tz:8080/xmlui/handle/123456789/1565
UDSMAquatic ecosystems & BiodiversityMangroves, salt marshes and seagrass beds", in Regional State of the Coast Report: Western Indian Ocean, UN, New York
2016
Determine importance of mangrove, saltmashes and seagrassCompletedWIOMSALugendo, B.BookMangrove and salt marsh degradation in the WIO continues despite present management initiatives. The situation is worse for seagrasses, which lack a clear management framework https://wedocs.unep.org/bitstream/handle/20.500.11822/11349/rsocr_printedition.compressed_Part5.pdf?sequence=6&isAllowed=y
UDSMAquatic ecosystems & BiodiversityRelative Importance of Mangroves as Feeding Habitat for Juvenile Fish: A Comparative Study on Mangrove Habitats with Different Settings.
2016
Determine if mangrove setting influences the extent to which habitat is utilized as a potential feeding ground by fishCompletedUDSMLugendo, B. R., Nagelkerken, I., Kruitwagen, G., Van der Velde, G., & Mgaya, Y. DJournalThe more or less continuous access provided more time for fishes to stay and feed in the mangrove-lined creeks compared to fishes from the fringing mangroves, which have access to these mangroves only during high tide and have to migrate to adjacent habitats with the ebbing tide. http://hdl.handle.net/20.500.11810/2696
TAFIRIAquatic ecosystems & BiodiversityGlobal patterns in lake ecosystem responses to warming based on the temperature dependence of metabolism (2016)
2016
To use long-term lake temperature data and published relationships between temperature and metabolism-linked variables in 26 lake ecosystems to explore the magnitude and global geography of metabolic responses to climate warming.CompletedNational Science Foundation (NSF) (DEB-1030242 and DEB-0842253); Research Opportunities in Space and Earth Sciences (ROSES) Grant; the Russian Ministry of Education and Science Research Project GR 01201461929; and the Russian Science Foundation Project No. 14-14-00400Benjamin M. Kraemer , Sudeep Chandra, Anthony I. Dell, Margaret Dix, Esko Kuusisto, David M. Livingstone, S. Geoffrey Schladow, Eugene Silow, Lewis M. Sitoki, Rashid Tamatamah and Peter B. McIntyreJournalThe work suggests that substantial metabolic acceleration has already occurred since 1970, and is most pronounced in the tropics where metabolism-linked ecosystem services may be most affected. https://doi.org/10.1111/gcb.13459
TAFIRIStock Assessment & Fisheries StatisticsAssessment of Dagaa (Rastrineobola argentea) stocks and effects of environment in Lake Victoria, East Africa
2016
(1) To review trends in the biomass and catches of dagaa in Lake Victoria and describe the spatial and temporal abundance of the species in Lake Victoria. (2) To examine whether the abundance of dagaa is influenced by environmental variables. (3) To examine the population biology of the species, by estimating parameters of growth, recruitment, mortality and exploitation rate.CompletedUNU-FTPKashindye, B. B.Technical Report(1)The observed rapid changes in life history of dagaa in the gulfs of Lake Victoria can be the sign of multiple stressors such as high fishing effort, predation and environmental changes. Hence, we recommend enforcement of the current legal mesh size to protect juvenile dagaa in the gulf and near shore shallow areas. Moreover, further research should be done to understand other possible causes of mortalities such predation by other fish, birds, and the quantity of dagaa biomass lost to detritus. (2)Higher biomass densities of dagaa were found during the rainy season, which also coincided with the highest landings recorded at Kirumba market during the same season. Although these months (October – February) are peak for dagaa catch, the landed dagaa face the problem of poor quality because of the heavy rains that occur during this time. This study recommends improving the processing technology for dagaa so as to increase value of dagaa and prevent post-harvest losses. Increasing the quality of dagaa will contribute to reduction of poverty in the region through increased price of the product that will also attract international markets http://www.unuftp.is/static/fellows/document/benedicto15aprf.pdf
TAFIRIStock Assessment & Fisheries StatisticsComparing the Performance of Protected and Unprotected Areas in Conserving Freshwater Fish Abundance and Biodiversity in Lake Tanganyika, Tanzania (2016a)
2016
To assess and compare the differences in fisheries resources between protected and unprotected areasCompletedTanzania National Parks (TANAPA), European Union (EU), and Frankfurt Zoological Society (FZS)Sweke, E.A., Assam, J.M., Chande, A.I., Mbonde, A.S., Mosha, M., Mtui, AJournalThe MMNP should be aware that resources conservation approaches such as protected areas in the region cannot be successful through stringent laws and regulations but by creating awareness of the importance of protected areas among stakeholders https://doi.org/10.1155/2016/7139689
TAFIRIStock Assessment & Fisheries StatisticsComparative job satisfaction of fishers in northeast Hokkaido, Japan for coastal fisheries management and aquaculture development (2016b)
2016
To examine fishing satisfaction among traditional fishersCompletedJapanese Ministry of the Environment through the Environmental Research and Technology Development Fund, Research No. 4e1301.Sweke, E.A., Kobayashi, Y., Makino, M., Sakurai, YJournalFurther research should be done to integrate knowledge from fishers, resources managers, biologists and socio-eeconomists, to examine how different coastal fisheries management approaches contribute to the job satisfaction of fishers; explore fishing effort allocation among different species and understand how effort allocation can be improved to maximize job satisfaction of fishers. https://doi.org/10.1016/j.ocecoaman.2015.12.001
TAFIRIFish biology Migratory behaviour shapes spatial genetic structure of cyprinid fishes within the Lake Malawi catchment (2016)
2016
To study the population genetic structure within three congeneric cyprinid species (pasa (Opsaridium microlepis, O. microcephalum and O. tweddleorum)CompletedCommonwealth Scholarship MWCS 2012249, Royal Society Leverhulme Trust Africa Awards AA100023 and AA130107Commonwealth Scholarship MWCS 2012249, Royal Society Leverhulme Trust Africa Awards AA100023 and AA130107JournalThe study revealed the gene flow among Lake Malawi populations of mbasa, an IUCN red listed ‘Endangered’ species endemic to the lake catchment, thus, conservation initiatives operating at both local and catchment scales are needed to reverse local population decline https://doi.org/10.1111/fwb.12767
TAFIRIAquatic ecosystems & BiodiversityDemography of fish populations reveals new challenges in appraising juvenile habitat values
2015
evaluates demographic parameters (frequency distribution, mean, skewness, kurtosis, and mode) and length-at-age data to study size structure and growth of four economically and ecologically relevant fish species, Lethrinus harak, Lethrinus lentjan, Lutjanus fulviflamma, and Siganus sutor, among different coastal habitats in TanzaniaCompletedWOTROKimirei IA, Nagelkerken I, Slooter N, Gonzalez ET, Rypel AL, Mgaya YDJournalWhereas current approaches often identify and manage single, complete nursery habitats based on those that contribute most individuals to adult populations, our study shows that a more dynamic and spatially-explicit management approach is needed, as nurseries have divergent benefits for separate life stages, species, and locations. http://www.int-res.com/abstracts/meps/v518/p225-237/
TAFIRIAquatic ecosystems & BiodiversityCan differential resurgence of haplochromine trophic groups in Lake Victoria be explained by selective Nile perch, Lates niloticus (L.) predation? (2015)
2015
To test if differential predation by Nile perch might cause differences in resurgence rate between haplochromine trophic groups by comparing the ratio of detritivorous and zooplanktivorous haplochromines in the environment to their ratio in stomach contents of Nile perchCompletedWOTRO, The NetherlandsKishe-Machumu, M. A., Voogd, T., Wanink, J. H., Witte, F.JournalThe similarity in size and distribution of the resurgent zooplanktivores and detritivores seems to provide little proof for selective feeding on one of the two groups. Thus, the slow recovery of detritivores, which were more numerous than zooplanktivores in the pre-Nile perch era, was a result of Nile perch predation does not hold DOI 10.1007/s10641-014-0356-2
TAFIRIFish biology Epizootiology of Microbial Diseases of Wild and Cultured Fish in the Mtera Dam Catchment area Tanzania
2015
To investigate and identify fish pathogens infecting Tilapia (Orechromis nilolicus)in the wild Mtera dam and Aquaculture System in Mtera catchment areaCompletedWorld Bank- MACEMP PROJECTSalome D ShayoPhD thesis(i) The research be expanded to other man made dams like Nuyumba ya Mungu where the fishes are higly infested with parasites (ii) Government through fisheries division to establish fish diagnostic research centers to combat fish diseases that might manifest due to expansion of Aquaculture in Tanzania (iii) Fisheries division to establish guarantee stations to avoid transmission of alien fish pathogens in our waters (iv) Government put more effort to educate Fish disease Professionals
TAFIRICapture fishery Rapid assessment of abundance and biomass of the mangrove crab (Scylla serrate) and its mariculture development on the Tanga coast.
2015
1) To identify and compare potentials of the selected sites in terms of mud crab abundances, 2) To identify which sites do have comparatively higher mud crab stock abundance at this sampling season, 3) To identify which class of mud crab are at high abundance (adults/juveniles) at this sampling season and 4) To assess the general potential of the selected areas in terms site sediment qualities.CompletedUSAIDMahika, G, Mhitu, H and Kuboja BTechnical ReportThere is a need for the mud crab fishery authority to develop a formal harvesting strategy that outline objectives, strategies, performance indicators and monitoring programme to support future stock assessment. Furthermore, there is a need for a long-term mud crab stock assessment that will cover both season and possible environmental drivers that govern distribution and abundance of the mud crab in this region.
TAFIRISocio-economics & MarketingFishers’ attitude towards performance of Beach Management Units (BMUs) in regulating fishery and reducing poverty: case study of two BMUs Lake Victoria, Tanzania
2015
To examine the perception and attitudes of fishers towards the performance of their BMUs to implementation of fisheries regulationsCompletedUnited Nations Fisheries Training ProgramJoseph LuombaJournalThere are needs for continuous training and awareness to BMU members on fisheries regulations in order to reduce non-compliance https://www.researchgate.net/publication/276369580
TAFIRIAquacultureEnvironmental impacts of cage culture in Lake Victoria: the case of Shirati Bay-Sota, Tanzania
2015
To investigate the impacts of the small-scale cage culture on the environment in Shirati BayCompletedAssociation for Strengthening Agricultural ResearcKashindye, B.B., Nsinda, P., Kayanda, R., Ngupula, G.W., Mashafi, C.A., Ezekiel, C.N. JournalCage culture can be allowed in Lake Victoria, Tanzania part, with close monitoring of its impacts https://dx.doi.org/10.1186%2Fs40064-015-1241-y
TAFIRIAquatic ecosystems & BiodiversityNile perch distribution in south-east Lake Victoria is more strongly driven by abiotic factors, than by prey densities. Hydrobiologia 755, 239-255.
2015
I. To identify the environmental drivers of Nile perch densities and II. To identify the spatial and temporal scales at which such drivers are relevant.CompletedNetherlands Organisation for Scientific Research (NOW/WOTRO) grant number W01.65.304.00.Cornelissen I.J.M, van Zwieten P. A. M., Peter H. K and Nagelkerke L. A. J.JournalChanges and variation in environmental driving factors should be considered when interpreting developments in the Nile perch stock and the impact of fisheries when implementing management strategies DOI 10.1007/s10750-015-2237-x
TAFIRIAquacultureEffect of salinity on the survival and growth of Rufiji tilapia, (Oreochromis urolepis urolepis|) fry
2015
To determine the effect of salinity on the growth performance and survival of the Rufiji tilapia fry produced by broodstock reared at different salinitiesCompletedThe Government of Tanzania through the Commission for Science and Technology (COSTECH)Ulotu, E. E.,Mmochi A, J and Lamtane, H. A.JournalRufiji tilapia is capable of growing and surviving well in very brackish waters. Under proper management the species offers poten¬tial for mariculture development in estuarine areas along the coast of Tanzania where there is an esti¬mated 3000 ha of swamplands, estuaries and lagoons. These ‘marginal’ areas could be utilized for mari¬culture development to assist in addressing increas¬ing fish demand, and alleviate competition for fresh water, especially in arid regions. https://www.ajol.info/index.php/wiojms/article/view/141666
TAFIRIAquatic ecosystems & BiodiversityPhytoplankton composition and microcystin concentrations in open and closed bays of Lake Victoria, Tanzania
2015
To investigate the spatial variation in phytoplankton and Microcystin concentrations in the nearshore waters of Lake Victoria. TanzaniaCompleted NFP, IPGL and Austrian Science FundA.S. Mbonde, Sitoki, L & Kurmayer, R. JournalThe nearshore water of MC-positive sites of Lake Victoria (Tanzania) is not recommended to be used as drinking water without treatment. http://www.tandfonline.com/loi/uaem20
TAFIRIAquatic ecosystems & BiodiversityDifferential recovery and spatial distribution pattern of haplochromine cichlids in the Mwanza Gulf of Lake Victoria
2015
To investigate the changes and the differential recovery, distribution pattern and relative abundance of haplochromine trophic guilds and species in the southern part of Lake Victoria in 2006 and 2008 and compared wih observations in 1979/80.CompletedWOTRO, NUFFIC, IFS, the Schure Beijerinck-Popping Fonds, the van Tienhoven Stichting and Yellow Springs InstrumentsKishe-Machumu, M. A., van Rijssel, J. C., Wanink, J. H., Witte, FJournalThere is a strong resurgence of some haplochromine species which may possibly be a consequence of a decline in Nile perch population, morphological and ecological adaptations to the altered environment and habitat extension. However, further studies in other areas with different degrees of environmental changes and different stages of Nile perch colonization should be conducted to evaluate the recovery status lake-wide http://dx.doi.org/10.1016/j.jglr.2015.03.005
TAFIRIAquacultureEnvironmental impacts of cage culture in Lake Victoria: the case of Shirati Bay, Sota,Tanzania
2015
The paper aimed at testing the feasibility of cage fish farming in Lake Victoria waters and assessed some possible associated environmental ConsequencesCompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECAKashindye, B B., Nsinda, P., Kayanda, R., Ngupula, G.W., Mashafi, C. A., and Ezekiel, C. N. JournalCaution should be taken when authorizing cage culture in Lake Victoria so as not to compromise the already deteriorated water quality and impair the ability of the lake to provide benefits sustainably to the communities whose livelihood depend on it. Thus, we suggest a proper site selection and continuous environmental monitoring be an essential component when considering Introduction of fish cage culture in Lake Victoria DOI 10.1186/s40064-015-1241-y
TAFIRICapture fishery Sustainability and suitability of marine small pelagic fish processing techniques in Unguja Island, Tanzania
2015
To assess the trend and determine sustainability and suitability of processing techniques of the marine small pelagic fish along selected sites in Unguja Island.CompletedSidaCesilia MatabaMSc thesisThis study calls for immediate proper management to ensure sustainable manners in utilization of natural resources for small pelagic fish processing by concerned division such as fisheries division, forest division and environmental divisions. University of Dar es Salaam
TAFIRIAquacultureEffect of initial stocking size of the predatory African sharptooth catfish (Clarias gariepinus) on recruits, growth performance, survival and yield of mixed-sex Nile tilapia (Oreochromis niloticus) in concrete tank culture system.
2015
Determination of initial stocking size of the predatory African sharptooth catfish (Clarias gariepinus) on recruits, growth performance, survival and yield of mixed-sex Nile tilapia (Oreochromis niloticus) when reared in concrete tank culture system.CompletedTanzania Commission for Science and Technology (COSTECH)Limbu, S. M., Shoko, A. P., Lamtane, H. A., Shirima, E. D., Kishe-Machumu, M. A., . Mgana, H. F and Mgaya, Y. DJournalFish farmers can reduce prolific breeding, obtain higher growth performance and produce larger size of marketable Nile tilapia by predominantly stocking ponds with large African sharptooth catfish predator of at least 60 g. https://link.springer.com/article/10.1007/s40071-014-0093-3
TAFIRIAquacultureReproductive biology of female Nile tilapia Oreochromis niloticus (Linnaeus) reared in monoculture and polyculture with African sharptooth catfish Clarias gariepinus (Burchell)
2015
Determination of reproductive biology of female Nile tilapia Oreochromis niloticus (Linnaeus) reared in monoculture and polyculture with African sharptooth catfish Clarias gariepinus (Burchell)CompletedLake Victoria Research Initiative (VicRes)Shoko, A. P., Limbu, S. M., Mrosso, H. D. J. and Mgaya, Y. DJournalO. niloticus production in either monoculture or polycuture system can be improved only through proper pond management techniques. https://link.springer.com/article/10.1186/s40064-015-1027-2
SUAHydrobiology & Water pollutionBenthic macroinvertebrate assemblages in mangroves and open intertidal areas on the Dar es Salaam coast, Tanzania
2015
To investigate the assemblages of benthic macroinvertebrates in mangrove forests and nearby open intertidal areas of the Dar es Salaam coast, TanzaniaCompletedSokoine University of Agriculture (SUA)C Rumisha, H Shukuru, PhD thesisFuture studies should employ other sampling tools such as grabs or pitfall traps, because the metal frame used in the present study was not very effective against fast-crawling animals such as crabs. https://www.tandfonline.com/doi/abs/10.2989/16085914.2015.1051504
SUAAquacultureEffects of soaked pigeon peas on the growth of Nile tilapia (Oreochromis niloticus L) fingerlings.
2015
To examine the effect of soaked Pigeon peas on the growth of Nile tilapia; Oreochromis niloticusCompletedDepartment of Animal science and productionNdau, L. J., & Madalla, A. N.PhD thesisWhenever the cost of Pigeon peas is lesser than fish meal, Pigeon peas can be soaked for 24 hours with a ratio of 1:3 w/v to replace up to 45% fish meal in fish diets as a way of reducing the current demand pressure on fish meal emanticscholar.org/paper/Effects-of-Soaked-Pigeon-Peas-on-the-Growth-of-Nile-Jl-An/4417f185e8ae4b7b37bf230eefe1ae1d15abf00f
TAFIRIFisheries EcologyComposition and abundance of deep-water crustaceans in the Southwest Indian Ocean: Enough to support trawl fisheries? Ocean & Coastal Management 111: 50-61.
2015
A recent review of historical trawl information suggested that aggregations of deep-water crustaceans, some with a high unit value, could potentially be exploited at several locations in the SW Indian Ocean (Groeneveld and Everett, 2015). Based on this, the South West Indian Ocean Fisheries Project (SWIOFP; van der Elst et al., 2009) funded a series of bottom trawl surveys to assess the fishery potential of deep-water grounds in Kenya, Tanzania, Mozambique, western Madagascar and eastern South Africa. We determined the relative importance of major taxa (crustaceans, teleosts, elasmobranchs, cephalopods, other invertebrates) represented in trawl catches, and investigated the abundance of crustacean species by country, day/night and depth stratum.CompletedSouth West Indian Ocean Fisheries Project (SWIOFP) and the Western Indian Ocean Marine Science Association (MASMA Programme)Everett B.I.,Groeneveld, J.C., Fennessy S.T,. Dias N, Filipe, O., Zacarias, L., Igulu, M., Kuguru, B., Kimani, E.,. Munga, C.N,. Rabarison, G.A, Razafindrakoto, H.,Yemane D, Journal the expansion of crustacean trawl fisheries into deeper water does not appear to be a viable option in the SW Indian Ocean region at the present. https://scholar.google.com/citations?user=6TzNkHEAAAAJ
TAFIRIAquatic ecosystems & BiodiversityMorphometry and average temperature affect lake stratification responses to climate change (2015)
2015
To determine which of the 26 lakes are most susceptible to stratification changes in response to climate change by compiling the temperature profile data from lakes of five continents to test whether mean lake temperatures, lake warming rates, or lake morphometry can be used to predict the observed trends in lake stratification as indicated by the depth of the thermocline, the thermal stability of the water column (Schmidt stability), and the steepness of the thermocline (thermocline buoyancy frequency.Completedgrateful for field research funding from the National Science Foundation (NSF) (DEB-1030242; ARES-CCD through the “ECOSYKI:Benjamin M. Kraemer, Orlane Anneville, Sudeep Chandra, Margaret Dix, Esko Kuusisto, David M. Livingstone, Alon Rimmer, S. Geoffrey Schladow, Eugene Silow, Lewis M. Sitoki, Rashid Tamatamah, Yvonne Vadeboncoeur, and Peter B. McIntyreJournalThe magnitude of stratification responses to climate change across lakes is associated with lake average temperature and morphometry, but not with warming rates, and indication of the influence of climate change on lake temperature and stratification to be ubiquitous but strongly in large tropical lakes. Therefore, tropical lakes should be areas of priority for the efforts to reduce impacts of climate change
TAFIRIAquatic ecosystems & BiodiversityCentury-Long Warming Trends in the Upper Water Column of Lake Tanganyika (2015)
2015
To assess whether warming rates in the upper water column (<100 m depth) vary spatially within the Lake Tanganyika using in-situ data and test whether spatio-temporal variation in temperature and warming rates can account for observed differences between measurement methodsCompletedPrivateBenjamin M. Kraemer, Simon Hook, Timo Huttula, Pekka Kotilainen, Catherine M. O’Reilly, Anu Peltonen, Pierre-Denis Plisnier, Jouko Sarvala, Rashid Tamatamah, Yvonne Vadeboncoeur, Bernhard Wehrli, Peter B. McIntyre.JournalThe study provided strong evidence that thermal and ecological shifts observed in L. Tanganyika over the last century are robust and in step with global climate change. The work recommended need to assess the spatial dimensions of warming within other large lakes. https://doi.org/10.1371/journal.pone.0134537
TAFIRIFish biology Geographical ancestry of Lake Malawiâ’s cichlid fish diversity (2015)
2015
To assess if the phylogenetic reconstructions CompletedRoyal Society-Leverhulme Trust Africa Award AA100023Martin J. Genner, Benjamin P. Ngatunga, Semvua Mzighani, Alan Smithand George F. TurnerJournalThe findings demonstrated that Astatotilapia sp. ‘of Great Ruaha catchment’ is a sister taxon to the L. Malawi’s flock. Further phylogenetic analyses will enhance our understanding of taxonomic and spatial patterns of genetic diversity within and among potentially ancestral riverine cichlids, including Astatotilapia sp. ‘Ruaha’. This will enable tests of the importance of active transport of genes through via riverine species and hybridization events for explaining shared genomic diversity among lacustrine radiations. http://dx.doi.org/10.1098/rsbl.2015.0232
TAFIRIAquacultureStudy on the water quality parameters in semi-intensive coastal shrimp culture system in Mafia Island, Tanzania (2015)
2015
To determine the physico-chemical properties of water in relation to the coastal shrimp culture operated in a semi-intensive system in the Mafia Island, Tanzania; particularly: changes in water temperature, dissolved oxygen (DO), pH, salinity, electrical conductivity (EC), turbidity, ammonium-N, nitrite-N, nitrate-N, phosphate-P and chlorophyll–a. CompletedSIDA-SAREC (currently Sida) Bilateral Marine Sciences Program Hassan A. Mateka, Rashid Tamatamah and Magreth KyewalyangaJournalWith increasing production and age of the shrimp farming areas, environmental deterioration is expected. A study calls upon to reduce adverse environmental impact through better culture husbandry, mixed culture and implementing regulatory, control and monitoring measures. https://www.iiste.org/Journals/index.php/JEES/article/view/18931/19524
TAFIRIFish biology The Distribution, Biological Characteristics and Vulnerability of the giant sea catfish, Arius thalassinus (Rüppell, 1837), to Fishing at Mafia Island, Tanzania (2015)
2015
To provide preliminary observations on the occurrence and some biological aspects of Arius thalassinus at Mafia Island, especially those likely to predispose it to high fishing mortality.CompletedNorwegian Cooperation Programme for Development, Research and Education – Project No. NUFUTZ-2007/1027Kamukuru, AT and Tamatamah RAJournalThe species’ restricted distribution, large size, low fecundity, late maturation and its reported high trophic level indicate that it would be vulnerable to fishing pressure; thus, its fishing be restricted during its spawning season to ensure its sustainability. https://www.ajol.info/index.php/wiojms/article/download/105115/119623
TAFIRIAquacultureComparative performance of mixed-sex and hormonal-sex-reversed Nile tilapia Oreochromis niloticus and hybrids (Oreochromis niloticus × Oreochromis urolepis hornorum) cultured in concrete tanks (2015)
2015
To compare growth rate, survival rate, condition factor and the yield of juvenile mixed-sex Oleochromis niloticus hormonal-sex-reversed O. niloticus and hybrids of O. niloticus and O. urolepis hornorum.CompletedNorwegian Agency for International Development (NORAD) through EPINAVMoses Mbiru, Samwel Limbu, Sebastian Chenyambuga , Hieromin Lamtane, Rashid Tamatamah, Nazael Madalla and Augustine W. MwandyaJournalThe study observed that O. niloticus farmers have potential to improve growth rate and yield by rearing hybrids without affecting the survival rate. http://hdl.handle.net/20.500.11810/2725
TAFIRICapture fishery Demersal trawl surveys show ecological gradients in Southwest Indian Ocean slope fauna. Western Indian Ocean Journal of Marine Science 14 (1&2), 73-92.
2015
Assessiment of the richness, diversity and community structure of demersal fish and benthic invertebrates caught by trawl nets along the deep shelf and upper continental slope of the Southwest (SW) Indian Ocean. Four depth-strat-ified surveys were undertaken in 2011-2012, in Kenya, Tanzania, Mozambique and southwestern Madagascar CompletedSouth West Indian Ocean Fisheries Pro-ject (SWIOFP) and the Western Indian Ocean Marine Science Association (MASMA Programme) BI Everett, JC Groeneveld, ST Fennessy, N Dias, O Filipe, L Zacarias, M Igulu, B Kuguru, E Kimani, CN Munga, GA Rabarison, H Razafindrakoto, D YemaneJournalstudy has contributed to the gradually building global body of knowledge which is pointing to the necessity to protect deep-water habitats which are increasingly being surveyed for potentially extractable resources as part of the development of so-called Blue Economies. https://www.researchgate.net/profile/Baraka_Kuguru/publications
TAFIRICapture fishery Spatial variation in demersal fish species composition, abundance and diversity along coastal East Africa from recent bottom trawl surveys. Regional Studies in Marine Sciences
2015
The structure of benthopelagic fish assemblages of the continental shelves and upper slopes along coastal East Africa (Kenya and Tanzania) was studied based on data from bottom trawls during 2012. These surveys are the most recent since the historical bottom trawls conducted in the 70s and 80s along costal East Africa. The bottom trawls sampled fishes in 27 stations along the Kenyan coast using FV Vega, while in Tanzania 24 stations were sampled by MV MafunzoCompletedSouth West Indian Ocean Fisheries Project (SWIOFP) and the Western Indian Ocean Marine Science Association (MASMA Programme)Kaunda-Arara, B.,Munga,C., Manyala, J., Kuguru, B., Igulu, M., Chande,M., Kangwe,S., Mwakiti, S., Thoya,P., Mbaru, E., Ruwa,R.JournalThe output of the study provide a taxonomic database on the fish species off coastal East Africa useful for monitoring spatio-temporal changes in fish assemblages in the face of climate change effects and increasing exploitation levels. DOI: 10.1016/j.rsma.2016.04.001
TAFIRIFish biology The Nile perch fishery of Lake Victoria: current status and management challenges (2015)
2015
To review the current state of the Nile perch stocks, discuss its problems and their causes; and considers the management challenges that will have to be overcome to ensure its sustainabilityCompletedEuropean Union through Implementation of a Fisheries Management Plan for Lake Victoria 2005–2010 (IFMP),Mkumbo, O.C., Marshall, B.E.JournalIt was recommended the Management authorities to adopt a holistic approach including control of fishing effort for effective management of Nile perch fishery https://doi.org/10.1111/fme.12084
TAFIRIFish biology Genomic islands of speciation separate cichlid ecomorphs in an East African crater lake (2015)
2015
To (i) characterize the early-stage adaptive divergence of two cichlid fish ecomorphs in a small (700 meters in diameter) isolated crater lake in Tanzania (ii) examine relationships between crater lake and riverine Astatotilapia calliptera of southern TanzaniaCompletedRoyal Society–Leverhulme Trust Africa Awards AA100023 and AA130107 Wellcome Trust Ph.D. studentship grant 097677/Z/11/Z, Wellcome Trust grant WT098051, Wellcome Trust and Cancer Research UK core support and a Wellcome Trust Senior Investigator Award, Leverhulme Trust Research Fellowship RF-2014-686, a University of Bristol Research Committee award, a Bangor University Anniversary Ph.D. studentship, and a Fisheries Society of the British Isles awardMalinsky, M., Challis, R.J., Tyers, A.M., Schiffels, S., Terai, Y., Ngatunga, B.P., Miska, E.A., Durbin, R., Genner, M.J., Turner, G.FJournalThe ecomorphs of Lake Massoko show clear differences in traits normally associated with adaptive radiation in cichlid fishes, further investigation of processes and specific genomic regions are required to determine whether they are involved in speciation events within the great cichlid radiations of Lakes Malawi, Victoria, and Tanganyika https://pubmed.ncbi.nlm.nih.gov/26680190/
TAFIRIStock Assessment & Fisheries StatisticsStock Assessment of Sockeye salmon Oncorhynchus nerka by Using Adaptive Framework Virtual Population Analysis (2015)
2015
To conduct Adaptive framework virtual population analysis (ADAPT VPA) as a step towards sound management of the stock. CompletedJapanese Ministry of the Environment through the Environmental Research and Technology Development Fund, Research No. 4e1301.Su, Y., Sweke, E., Denboh, T., Ueda, H., Matsuishi, TJournalThe stock of sockeye salmon in the lake revealed to decrease from 17.26 tons in 2009 to 7.77 tons in 2012, thus management strategy to reduce effort should be improved https://doi.org/10.2331/suisan.81.41
TAFIRIFish biology Catch per unit effort estimation and factors influencing it from recreational angling of sockeye salmon (Oncorhynchus nerka) and management implications for Lake Toya, Japan (2015)
2015
To examine the factors influencing CPUE, and to standardize the CPUE index of sockeye salmon from offshore recreational angling by removing the impacts of these factors. CompletedJapanese Ministry of Education, Culture, Sports, Science and 331 Technology (MEXTSweke, E.A., Su, Y., Baba, S., Denboh, T., Ueda, H., Sakurai, Y., Matsuishi, JournalTo ensure sustainability of the fish species and the lake’s ecosystem, enforcement of the currents regulations, and close monitoring of recreational fishery particularly offshore angling should be reinforced. http://hdl.handle.net/2115/6371
TAFIRIStock Assessment & Fisheries StatisticsPresence of Acapoeta tanganicae (Actinopterygii: Cypriniformes: Cyprinidae ) within the Lake Rukwa catchment supports historic riverine connectivity with Lake Tanganyika (2015)
2015
To assess if the discovered large-bodied cyprinid fish Acapoeta tanganicae (Boulenger, 1900)in the Lake Rukwa catchment indicates the connection between Lake Tanganyika and RukwaCompletedRoyal Society-Leverhulme Trust Africa AwardGenner, M.J., Turner, G.F., Smith, A., Mzighani, S., Ngatunga, B.PJournalFurther studies on molecular time-tree investigations to determine the period of separation of the Lake Rukwa and Lake Tanganyika populations would improve the reported findings http://www.aiep.pl/volumes/2010/6_1/txt/txt_14.php
TAFIRIFisheries EcologyComposition and abundance of deep-water crustaceans in the Southwest Indian Ocean: Enough to support trawl fisheries?
2015
To investigate the fishery potential of deep shelf waters over a broader geographical extent using bottom trawl surveys in Madagascar, Mozambique, Tanzania and Kenya from 2011 to 2012CompletedSouth West Indian Ocean Fisheries Project (SWIOFP) and the Western Indian Ocean Marine Science Association (MASMA ProgrammeEverett, B.I., Groeneveld, J.C., Fennessy, S.T., Dias, N., Filipe, O., Zacarias, L., Igulu, M., Kuguru, B., Kimani, E., Munga, C.N., Rabarison, G.A., Razafindrakoto, H., Yemane, DJournalExpansion of crustacean trawl fisheries into deeper water does not appear to be a viable option in the SW Indian Ocean at present. https://doi.org/10.1016/j.ocecoaman.2015.04.003
TAFIRISocio-economics & MarketingA social analysis of contested fishing practices in Lake Victoria, Tanzania (2015
2015
To understand how fishing is organized in Lake Victoria TanzaniaCompletedThe Netherlands Organization for Scientific Research (NWO ,WOTRO, a science for global development) grant W01.65.304.00Modesta Medard Ntara JournalFishing on Lake Victoria is impossible without engaging in unequal power relationships with financiers; Fishing in Lake Victoria is an activity embedded in networksrather than an individual activity- because ownership of resources, action and processes are vested in network of actors larger than the individual https://core.ac.uk/download/pdf/29206505.pdf
TAFIRIClimate change & environmentPlanet: Oceans and Life
2015
ReviewCompletedNot specifiedPaula J, Mahongo S, Mwaipopo R Book ChapterThe Regional State of Coast Report for the western Indian Ocean (WIO) is the first comprehensive regional synthesis to provide insights into the enormous economic potential around the WIO, the consequential demand for marine ecosystem goods and services to match the increasing human population, the pace and scale of environmental changes taking place in the region and the opportunities to avoid serious degradation in one of the world’s unique and highly biodiverse oceans. In: (J. Paula, Ed.) The Regional State of the Coast Report: Western Indian Ocean. UNEP-Nairobi Convention and WIOMSA, Nairobi, Kenya, pp. 3-12. http://dx.doi.org/10.18356/dd8dca69-en
TAFIRIClimate change & environmentSea/Air Interaction
2015
Oceanographic researchCompletedNot specifiedMahongo SBook ChapterThe mean climate of the Earth over long time scales is therefore partly shaped by the convergence/ divergence of the oceanic heat exchanges, which act as sources and sinks of heat for the atmosphere (Lee and others, 2010). In: (J. Paula, Ed.) The Regional State of the Coast Report: Western Indian Ocean. UNEP-Nairobi Convention and WIOMSA, Nairobi, Kenya, pp. 199-210. http://dx.doi.org/10.18356/2b8ec516-en
TAFIRIFish biology Assessment of the effects of plerocercoid larvae of Ligula intestinalis (Cestoda) on Engraulicypris sardella (Cyprinidae) from northern Lake Nyasa/ Malawi/Niasa
2014
To determine the effects of plerocercoid larvae of Ligula intestinalis (Cestoda) on Engraulicypris sardella (Cyprinidae) from northern Lake Nyasa/ Malawi/NiasaCompletedNetherland Fellowship ProgramMsafiri AndrewJournalMore research is needed in order to identify what are trigger environment for the prevalence of the parasite in the host fish. http://dx.doi.org/10.1080/14634988.2014.875444
TAFIRIFisheries EcologyFast adaptive responses in the oral jaw of Lake Victoria cichlids
2014
To investigate whether an important part of the cichlid feeding apparatus, the premaxilla, showed adaptive responses to the changed environmental/ecology of the haplochromines in Lake Victoria. .CompletedNWO, WOTRO Netherlands’ Ministry of Development van Rijssel, J. C., Hoogwater, E. S., Kishe-Machumu, M. A., van Reenen, E., Spits, K. V., van der Stelt, R. C., Wanink, J. H. and Witte, F.JournalHaplochromine cichlids are able to rapidly respond to environmental changes and that changes in diet are likely to be caused by a competition release and increase. doi:10.1111/evo.12561
TAFIRIAquatic ecosystems & BiodiversityDiel vertical distribution and life history characteristics of Tropodiaptomus simplex and its importance in the diet of Stolothrissa tanganicae, Kigoma, Tanzania
2014
To determine the abundance and life history of T. simplex, and examining the impact of S. tanganicae on T. simplexCompletedAustrian dev. CooperationHuruma Fredrick MganaJournalTemperature and food availability in the lake affects development of T. Simplex, Selective too affect population of the species. Conservation of the lake environment is highly encouraged. https://www.tandfonline.com/doi/full/10.1080/14634988.2014.877334?scroll=top&needAccess=true
TAFIRIAquatic ecosystems & BiodiversityProcesses Governing the Retention of Phosphorus and Nitrogen in Nyashishi Wetland, (2014)
2014
To determine the processes which are involved in buffering nutrients from entering Lake VictoriaCompletedNile Basine InitiativeBaraka C SekadendePhD thesisTo determine the processes which are involved in buffering nutrients from entering Lake Victoria
TAFIRIFish biology Assessment of the effects of plerocercoid larvae of Ligula intestinalis (Cestoda) on Engraulicypris sardella (Cyprinidae) from northern Lake Nyasa/Malawi/Niasa
2014
To assess the occurrences and effects of the parasite, Ligula intestinalis on the fish host, Engraulicypris sardella at selected landing sites of Matema and Kafyofyo, situated on the extreme north of Lake Nyasa.CompletedNetherland Fellowship Programme (NFP) A. Msafiri, K. Kwendwa, P. G. Nestory and M. AlistidiaJournalThe study emphasized that L. intestinalis parasites affect fecundity and consequently inhibit the reproductive capacity of Engraulicypris sardella’s population. Efforts to ensure or reduce infection should be practiced http://dx.doi.org/10.1080/14634988.2014.875444
TAFIRIAquatic ecosystems & BiodiversityAssessment of Heavy Metal Pollution in Octopus cyanea in the Coastal Waters of Tanzania
2014
To investigate the spatial concentrations of lead in the muscle tissue and liver of O. cyanea and sediment in the coastal waters off Dar es Salaam and Tanga, TanzaniaCompletedBlacksmith InstituteMshana &SekadendeJournalResearch article https://doi.org/10.5696/2156-9614-4-6.10
TAFIRIAquacultureEffect of Stocking Density on the Growth Performance of Sex Reversed Male Nile Tilapia (Oreochromis niloticus) Under Pond Conditions in Tanzania
2014
To compare the growth potential of pond stocked monosex Nile tilapia at two different stocking densities: higher (HD) and lower densities (LD) CompletedAssociation for Strengthening Agricultural ResearcKapinga I., Mlaponi, E., Kasozi N.JournalThere is a need to determine the manageable levels at high density that will promote faster growth of tilapia to table size DOI: 10.5829/idosi.wjfms.2014.06.02.82214
TAFIRISocio-economics & MarketingConsumer Preference on Value Added Products of Farmed Fish in Lake Victoria Basin, Tanzania
2014
To assess the consumer taste preference and purchase intent of value added products of farmed fish in Lake Victoria.CompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA).Mwanahamis Salehe, Joseph Luomba, Enock MlaponiJournalFish farmers in Lake Victoria region need to improve their chain performance through value addition for their competitiveness and profitability against wild fisheries. https://www.semanticscholar.org/paper/Consumer-Preference-on-Value-Added-Products-of-Fish-Salehe-Luomba/dd67654e3421cfded1c963b1ff64867bf380f169
TAFIRIAquatic ecosystems & BiodiversitySpatial distribution of soluble reactive silica (SRSi) in the Tanzanian waters of Lake Victoria and its implications for diatom productivity
2014
To determine Soluble reactive silica (SRSi) concentrations in relation to diatom abundance in the Tanzanian waters of Lake VictoriaCompletedTrade and Agriculture Support Project IINgupula, G.W., Ezekiel, C.N., Mbonde, A.S.E., Kashindye, B., Mboni, E. JournalSuitable management measures of the Lake environment to reverse the situation are vital https://www.tandfonline.com/doi/abs/10.2989/16085914.2014.888330
TAFIRIAquacultureUlotu EE., (2014). Effect of salinity on the reproductive performance of Rufiji tilapia, Oreochromis Urolepis urolepis and Growth of its fry
2014
To determine the effect of salinity on the reproductive performance and survival of Rufiji tilapia broodstock at different salinities. To determine the effect of salinity on the growth performance and survival of the Rufiji tilapia fry produced by broodstock reared at different salinities. To determine the effect of salinity on water quality parameters in broodstock and fry rearing tanks. CompletedThe Government of Tanzania through the Commission for Science and Technology (COSTECH)Eusebia Ernest UlotuMSc thesisRufiji tilapia offer potential for mariculture development in estuarine areas along the coast of Tanzania for poverty reduction, employment and income generation. During fry production Rufiji tilapia broodstock should be maintained at salinities as high as 15 ppt which can not impair the reproductive performance of this species. Since the highest growth performance of fry was observed at 25 ppt whereas, the highest reproductive performance was observed at 15 ppt, production of salinity tolerance Rufiji tilapia fingerlings should be conducted at 15 ppt and gradually acclimatize the produced fry to 25 ppt. Successfully this study has produced Rufiji fingerlings which were able to sustain high salinity up to 25 ppt. Rufiji tilapia is capable of growing and surviving well in very brackish waters. Under proper management the species offers poten¬tial for mariculture development in estuarine areas along the coast of Tanzania where there is an esti¬mated 3000 ha of swamplands, estuaries and lagoons. These ‘marginal’ areas could be utilized for mari¬culture development to assist in addressing increas¬ing fish demand, and alleviate competition for fresh water, especially in arid regions. University of Dar es Salaam- Institute of Marine Sciences
TAFIRIFisheries Information SystemsCoupled human and natural system dynamics as key to the sustainability of Lake Victoria’s ecosystem services
2014
To investigate the mechanisms of change through the social-ecological model on which factor(s) among “Exploitation or eutrophication as threats for fisheries? Disentangling social and ecological drivers of ecosystem changes in Lake VictoriaCompletedThe Netherlands Organisation for Scientific Research (NWO/WOTRO) grant number W01.65.304.00. Through the integrated project “Exploitation or eutrophication as threats for fisheries? Disentangling social and ecological drivers of ecosystem changes in Lake Victoria (SEDEC),”Downing, A. S., E. Van Nes, J. Balirwa, J. Beuving, P. Bwathondi, L. J. Chapman, I. J. M. Cornelissen, I. G. Cowx, K. Goudswaard, R. E. Hecky, J. H. Janse, A. Janssen, L. Kaufman, M. A. Kishe-Machumu, J. Kolding, W. Ligtvoet, D. Mbabazi, M. Medard, O. C. Mkumbo, E. Mlaponi, A. T. Munyaho, L. A. J. Nagelkerke, R. Ogutu-Ohwayo, W. O. Ojwang, H. K. Peter, D. Schindler, O. Seehausen, D. Sharpe, G. M. Silsbe, L. Sitoki, R. Tumwebaze, D. Tweddle, K. E. Van de Wolfshaar, H. Van Dijk, E. Van Donk, J. C. Van Rijssel, P. A. M. Van Zwieten, J. H. Wanink, F. Witte, and W. M. Mooij.JournalChanges to the structure of the system in Lake Victoria, which can be brought about through evolution and adaptation in the social-ecological system or through the implementation of policies, can dramatically alter systems dynamics and responses to change. Differences in relative strengths of interactions, which can be understood as a change in the system state, can greatly influence the vulnerability of system elements to further change. Such quantitative changes and differences can be quite pervasive in both time and space. http://www.ecologyandsociety.org/vol19/iss4/art31/
TAFIRIHydrobiology & Water pollutionSpatial distribution of soluble reactive silica (SRSi) in the Tanzanian waters of Lake Victoria and its implications for diatom productivity. African
2014
Investigate the concentration of SRSi in the Water column of Lake Victoria.CompletedImplementation of Fisheries Management Plan project (IFMP)Ngupula, G. W., Ezekiel, C. N., Mbonde, A. S. E., Kashindye, B. B. and Mboni, Elison. JournalThe SRSi concentration in Lake Victoria’s Tanzanian waters has declined, as compared to the concentrations recorded in the 1960s. Increased uptake, decreased dissolution and increased accumulation in the sediments are considered the major contributing factors. The bottom waters of Lake Victoria contain higher concentrations of SRSi than do the surface waters. In 2005–2008 the diatom community of Lake Victoria was dominated by the opportunistic Nitzschia acicularis, which is a poor source of nutrients for consumers http://dx.doi.org/10.2989/16085914.2014.888330
TAFIRIAquacultureA comparison of Diurnal Dynamics of Water Quality Parameters in Nile Tilapia (Oreochromis niloticus,Linnaeus, 1758) Monoculture and Polyculture with African Sharptooth catfish (Clarias gariepinus) in earthen Ponds
2014
Determination of diurnal dynamics of water quality parameters in AquacultureCompletedLake Victoria Research Initiative (VicRes)Shoko, A. P., Limbu,S. M.,Mrosso, H. D. J. and Mgaya, Y. D. JournalIn order for farmers to attaining maximum fish growth, survival and higher yields, they are advised to regularly monitor water quality parameters, particularly unionised ammonia to ensure that they are within the acceptable range. The monitoring should be done late in the evening and early in the morning. https://link.springer.com/article/10.1007/s40071-014-0056-8
TAFIRIAquacultureThe performance of Artemia shell-freee mbryos, Moina micruraand phytoplankton on larvae of reared African catfish.
2014
Determining growth performance of African sharptooth catfish larvae fed on Artemia shell-freee mbryos, Moina micrura and phytoplanktonCompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA)Ngupula, G.W., Shoko, A. P., Musiba, M., J. Ndikumana and Zziwa, E.JournalThe study recommends the use of Artemia embryos as the best starter feed for the rearing of C. gariepinus larvae followed by the Moina micrura. https://www.ajol.info/index.php/acsj/article/view/108495
FOREIGN INSTITUTIONFish biology Single and joint effects of regional- and local-scale variables on tropical seagrass fish assemblages
2014
Examine the relative importance of local- and regional-scale factors structuring seagrass-associated fish assemblages, using a field survey in six seagrass (Thalassodendron ciliatum) areas around Unguja Island (Zanzibar, Tanzania)CompletedThis research was funded by the Swedish International Development Cooperation Agency (Sida) through their Minor Field Study (MFS) program, and a research grant from the Swedish Research Council (VR/Uforsk, grant number SWE-2012-086).Aller, E. A., Gullström, M., Maarse, F. K. E., Gren, M., Nordlund, L. M., Jiddawi, N., & Eklöf, J. S.PhD thesisthe fish assemblages are influenced by multiple variables that do not only act at different scales but also interact https://link.springer.com/article/10.1007/s00227-014-2514-7#Ack1
TAFIRIAquaculturePerformance of locally formulated feeds for rearing of African catfish in Tanzania.
2014
Determination of locally formulated feeds for rearing of African catfish in TanzaniaCompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA)Musiba, M.J., Ngupula, G .W. Kashindye, B.B., Elison, M., Shoko, A.P., Ndikumana, J., Zziwa, E. and Katunzi, E.F .B.JournalLocally formulated feeds can cost effectively be used for the rearing of African catfish in Tanzania. https://www.ajol.info/index.php/acsj/article/view/108550
TAFIRIFish biology Reproductive biology of Delagoa threadfin, Nemipterus bipunctatus (Valenciennes,1830) along the coastal waters of Dar es Salaam
2014
To assess reproductive biology of the commercially important delagoa threadfin bream, Nemipterus bipunctatus along the coastal waters of Dar es Salaam for management purposes of this stock.CompletedWIOMSASululu JS.and Kangwe SJ Technical Reporti) Although N.bipunctatus is mainly caught by handlines (a gear which is known to capture at small quantities) in Tanzanian coastal waters, Fisheries managers should put some restrictions on exploitation of this species during new moon phase. This moon phase is spawning time for this species, hence such restrictions will give a room for conservation of their spawning stock biomass https://www.wiomsa.org/all-publications/?type=annual-reports
TAFIRIClimate change & environmentAnalysis of met-ocean processes in relation to changes in large scale climatic systems in Tanzania and the Western Indian Ocean
2014
Oceanography and coastal meteorologyCompletedTAFIRI/COSTECHShigalla B. MahongoPhD thesisAn understanding of the region’s met-ocean processes, their variability, trends, predictability and their association with large scale climatic systems is crucial in providing important baseline information which could be used as an informative reference for the region’s coastal climatic system. Suggestions for future research in met-ocean processes include the use of reanalysis data from global databases to analyze the quantities at a spatial scale. The global datasets are generally long and continuous hence appropriate for spatial analyses. University of Dar es Salaam Library
TAFIRIFish biology Assessment of the effects of plerocercoid larvae of Ligula intestinalis (Cestoda) on Engraulicypris sardella (Cyprinidae) from northern Lake Nyasa/Malawi/Niasa (2014
2014
To assess the occurrences and effects of the parasite, Ligula intestinalis on the fish host, Engraulicyprissardella at selected landing sites of Matema and Kafyofyo, situated on the extreme north of Lake Nyasa.CompletedNetherland Fellowship Programme (NFP) A. Msafiri, K. Kwendwa, P. G. Nestory and M. AlistidiaJournalThe study emphasized that L. intestinalis parasites affect fecundity and consequently inhibit the reproductive capacity of Engraulicypris sardella’s population. http://dx.doi.org/10.1080/14634988.2014.875444
TAFIRIAquacultureEffect of Stocking Density on the Growth Performance of Sex Reversed Male Nile Tilapia (Oreochromis niloticus) Under Pond Conditions in Tanzania (2014)
2014
To determine the growth performance of male Nile tilapia grown under higher (HD) and lower densities (LD) to provide information to current and prospecting fish (1) farmers with scientific evidence when deciding on the choice of farming methods to adopt.CompletedUnited States Agency for International Development (USAID) Imani Kapinga, Enock Mlaponi and Nasser KasoziJournalThe management levels at high stocking density (HD) that will promote faster growth of tilapia to table size should be determined in line with the influence of all water quality parameters on fish growth. http://www.idosi.org/wjfms/wjfms6(2)14/5.pdf
TAFIRIAquacultureComparing flow regime, channel hydraulics, and biological communities to infer flow–ecology relationships in the Mara River of Kenya and Tanzania (2014).
2014
To investigate the flow regime characteristics and ecological status of the Mara River, which drains the Mara-Serengeti ecoregion of Kenya and TanzaniaCompletedUnited States Agency for International Development (USAID) McClain, M.E., Subalusky, A.L., Anderson, E.P., Dessu, S.B., Melesse, A.M., Ndomba, P.M., Mtamba, J.O.D., Tamatamah, R.A., and Mligo, C.JournalThe Mara has potential to serve as a model for ecohydrological research examining flow–ecology linkages in East African environments, and applied research into approaches to protect ecosystems while sustainably developing water resources. https://doi.org/10.1080/02626667.2013.853121
TAFIRIFisheries EcologyAssessment of Heavy Metal Pollution in Octopus cyanea in the Coastal Waters of Tanzania (2014).
2014
To investigate the spatial concentrations of lead in the muscle tissue and liver of Octopus cyanea and sediment in the coastal waters of Dar es Salaam and Tanga, TanzaniaCompletedBlacksmith InstituteJohnson Grayson Mshana and1 Baraka SekadendeJournalHarvesting and processing methods of Octopus cyanea should be assessed in view of the possible cross contamination of muscle tissues by lead-contaminated livers. Governmental and non-governmental organizations should stress community environmental education to help people understand that the dose of toxic metal that one obtains from eating octopus may depend on the quantity consumed. https://doi.org/10.5696/2156-9614-4-6.10
FOREIGN INSTITUTIONFish biology The genomic substrate for adaptive radiation in African cichlid fish
2014
To understand the molecular mechanisms underlying cichlid phenotypic diversity in African cichlidsCompletede National Human Genome Research Institute (NHGRI)Brawand, D., Wagner, C., Li, Y. et alJournalThey conclude that a number of molecular mechanisms shaped East African cichlid genomes, and that amassing of standing variation during periods of relaxed purifying selection may have been important in facilitating subsequent evolutionary diversification https://doi.org/10.1038/nature13726
TAFIRIAquatic ecosystems & BiodiversityMangrove Habitat Use by Juvenile Reef Fish: Meta-Analysis Reveals that Tidal Regime Matters More than Biogeographic Region (2014)
2014
To undertake a meta-analysis for examining the usage of various tropical coastal habitats (seagrass beds, coral reef and mangroves) by juvenile reef fishes on a global scale.CompletedNWO) Faculty of Sciences (Radboud University); Australian Research Council (grant no. FT120100183); Australian Coral Reef Society; Australian Department of Climate Change and Energy Efficiency; and the Queensland Department of Environment and Resource Management. OCE-0119976 World Wildlife Fund. DECRA fellowship DE120102459 and Laureate fellowship of Australian Research Council. Igulu, M.M., Nagelkerken, I., Dorenbosch, M., Grol, M.G.G., Harborne, A.R., Kimirei, I.A., Mumby, P.J., Olds, A.D., Mgaya, Y.D.JournalThe study highlight the importance and hence a need to incorporate region-specific tidal inundation regimes into marine spatial conservation planning and ecosystem based management https://doi.org/10.1371/journal.pone.0114715
TAFIRIClimate change & environmentModelling the dynamics of the Tanzanian coastal waters
2014
Specifically, the study intended to generate appropriate boundary and forcing input files describing the seasonal cycle to force the ROMS application to configure ROMS for our application and model validation using in-situ. U.S. Global Change Research Program, and administered by the U.S. National Science Foundation under Grant Number GEO0627839. POGOSCOR and WIOMSA fellowship programs provided initial funding support for the training in ROMS. CompletedU.S. Global Change Research Program, and administered by the U.S. National Science Foundation under Grant Number GEO-0627839. POGO-SCOR and WIOMSA fellowship programs provided initial funding support for the training in ROMSS. B. Mahongo and Yohh«anna ShaghudeJournalThe present study has provided a broader understanding of the dynamics of the coastal waters along the entire coast of Tanzania (with the inclusion of the deep water dynamics) by configuring ROMS for the area. The offshore dynamics which provide relevant information on offshore fishery resources such as tuna were scarcely known. In view of this, the results of the present study provides a better understanding to the policy and decision makers, particularly those who are dealing with fishery resource management on the ata from the Oregon State University global models of ocean tides (Egbert and Erofeeva, 2002), and the discharge from major rivers. Nesting with higher resolution bathymetry may also be used in areas of strategic importance such as in the continental shelf and around islands. • https://doi.org/10.5897/JOMS2013.010
TAFIRIStock Assessment & Fisheries StatisticsSpatial and temporal variation in the distribution and density of pelagic fish species in Lake Victoria, (East Africa
2014
The first objective of this article was to reanalyse the various data sets collected at differ- ent times using the same protocols as used in the current protocols (LVFO, 2008). The second objec- tive was to produce trends in density distribution and abundance of pelagic fish species in Lake Victoria between 1999 and 2011 based on generalised linear models (GLM). CompletedFunds for the surveys were provided through the EU funded LVFRP II and IFMP projects. Taabu-Munyaho Anthony, Chrisphine Nyamweya, Lewis Sitoki, Robert Kayanda, Inigo Everson, and Gudrún Marteinsdóttir. 2014Journalillustrated that Lake Victo- ria has diverse stock signals in various regions of the same lake. It is like the Lake is composed of “many small lakes” in one big lake. An attribute alluded to by Graham as early as 1928 (Graham, 1929). Scientists studying Lake Victoria should therefore consider disintegrating the lake into smaller char- acteristic units in addition to sampling a large portion of the lake before generalizing the implied observations. https://doi.org/10.1080/14634988.2014.87688
TAFIRIStock Assessment & Fisheries StatisticsManagement of Lake Victoria fishery: Are we looking for easy solutions?
2014
This article describes the current fishery co-management program to determine the feasibility of imple- menting a holistic approach on Lake Victoria. It is concluded that whether a management system should be “holistic” or “fishery-based” is of little importance; what is needed on Lake Victoria are clear objectives and a management plan that will enable those objectives to be achieved, utilizing both ecological and fisheries data where appropriate. CompletedLake Tanganyika Authority’s Secretariat (LTAS) Njiru, M., Martin van Knaap, M., Taabu-Munyaho, A., Nyamweya, C., Kayanda, R. J, Marshall, B. 2014.JournalThe need to redefine the objectives of Lake Vic toria’s fishery management approach is necessary to address the oncoming challenges of higher hu man populations and the environmental and other anthropogenic forces they will have on the fisheries. • https://doi.org/10.1080/14634988.2014.881220
TAFIRIClimate change & environmentAnnual to Inter-Decadal Variability in Surface Air Temperature Along the Coast of Tanzania
2014
Oceanographic researchCompletedNot specifiedMahongo SB JournalThe past decade, which coincided with a warm PDO inter-decadal signal, was also the warmest. Western Indian Ocean Journal of Marine Science, 13(2): 109 – 124.
TAFIRIClimate change & environmentModelling the dynamics of the Tanzanian coastal waters
2014
Oceanographic researchCompleted International START Secretariat with funds supplied by the U.S. Global Change Research Program, and administered by the U.S. National Science Foundation under Grant Number GEO-0627839. POGO-SCOR and WIOMSA fellowship programs provided initial funding support for the training in ROMSMahongo SB and Shaghude YW JournalThe modelled salinity and temperature profiles are similar to those observed from field observations of previous investigations Journal of Oceanography and Marine Science, 5(1): 1-7
TAFIRIClimate change & environmentProceedings of the First IOCAFRICA Ocean Forecasting Workshop for the Western Indian Ocean Region, Institute for Meteorological Training and Research, Nairobi, Kenya, 11-15 August 2014
2014
Workshop Proceeding CompletedNot specifiedMahongo S Odido M, Aura S (Eds)Book ChapterThe First IOCAFRICA workshop on Ocean Forecasting for the Western Indian Ocean (WIO) region IOC Workshop Report No. 267, UNESCO-IOC, Nairobi, 23p.
TAFIRIClimate change & environmentProceedings of the African Summer School on the Application of Ocean Data and Modelling Products, April – September 2014.
2014
Workshop Proceeding CompletedNot specifiedAura S, Backeberg B, Bemiasa J, Folorunsho R, Jiang L, Kumar M.N, Lebehot A, Mahongo S, Odido M, Reed G, Shillington F, Samiksha SV (Eds) (2014). BookNone IOC Workshop Report No. 268, UNESCO-IOC, Nairobi, 272p.
TAFIRIAquatic ecosystems & BiodiversityThe Mangrove Nursery Paradigm Revisited: Otolith Stable Isotopes Support Nursery-to-Reef Movements by Indo-Pacific Fishes
2013
To test to which degree a suite of Indo-Pacific reef fish species has passed through putative mangrove vs. seagrass vs. coral reef nursery habitatCompletedWOTRO, WIOMSAIsmael A. Kimirei, Ivan Nagelkerken, Yunus D. Mgaya, Chantal M. HuijbersJournalMaintaining connectivity between inshore vegetated habitats and coral reefs, and conserving habitat mosaics rather than single nursery habitats, is a major priority for the sustainability of various Indo Pacific fish populations http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0066320
TAFIRIAquatic ecosystems & BiodiversityWhat drives ontogenetic niche shifts in reef fishes?
2013
Examine drivers of ontogenetic niche shifts in three species of reef fishCompletedWOTROKimirei IA, Nagelkerken I, Trommelen M, Blankers P, van Hoytema N, Hoeijmakers D, Rypel AL, Mgaya YDJournalProtection of mangrove and seagrass ecosystems is vital for a sustainable coastal fisheries management https://link.springer.com/article/10.1007/s10021-013-9645-4#
TAFIRICapture fishery Fishing for Dagaa with 5 mm and 10 mm mesh nets: A comparison of length-frequencies and biological characteristics
2013
To determine an appropriate mesh size for Dagaa fishing in Lake VictoriaCompletedLake Victoria Fisheries Research Project (LVFRP)Philemon E. Nsinda, Batman S. Msuku, Hillary D. Mrosso.JournalGiven the absence of differences in key parameters under investigation between the fish caught with the 5 and 10 mm mesh sizes, the two meshes can be used interchangeably http://dx.doi.org/10.1080/14634988.2013.823075
TAFIRIClimate change & environmentModelling the dynamics of the Tanzanian coastal waters
2013
Specifically, the study intended to generate appropriate boundary and forcing input files describing the seasonal cycle to force the ROMS application to configure ROMS for our application and model validation using in-situ. U.S. Global Change Research Program, and administered by the U.S. National Science Foundation under Grant Number GEO-0627839. POGO-SCOR and WIOMSA fellowship programs provided initial funding support for the training in ROMS. CompletedSTART Secretariat, WIOMSA and POGO-SCORS. B MahongoJournalThe present study has provided a broader understanding of the dynamics of the coastal waters along the entire coast of Tanzania (with the inclusion of the deep water dynamics) by configuring ROMS for the area. The offshore dynamics which provide relevant information on offshore fishery resources such as tuna were scarcely known. In view of this, the results of the present study provides a better understanding to the policy and decision makers, particularly those who are dealing with fishery resource management on the ata from the Oregon State University global models of ocean tides (Egbert and Erofeeva, 2002), and the discharge from major rivers. Nesting with higher resolution bathymetry may also be used in areas of strategic importance such as in the continental shelf and around islands. • https://doi.org/10.5897/JOMS2013.010
TAFIRICapture fishery Nile tilapia invades the Lake Malawi catchment
2013
evidence of two recent introductions of Oreochromis into the Lake Malawi (‘Nyasa’ in Tanzania) catchment, including the prolific invader O. niloticus, and emphasise new threats to the unique biodiversity and genetic resources of the catchment.CompletedRoyal Society-Leverhulme Trust Africa Award to MJGGenner, MJ, Connell E, Shechonge A, Smith A, Swanstrom J, Mzighani S, Mwijage A, Ngatunga BP, Turner GF JournalOccurrence records of two invasive tilapiines, Oreochromis niloticus and Oreochromis leucostictus, inside the Lake Malawi catchment.Efforts to be made to eradicate invasive species. The precautionary principle holds that future fisheries and aquaculture development in the region should be based http://dx.doi.org/10.2989/16085914.2013.842157
TAFIRICapture fishery Hybrid origins of the endemic oreochromis “golden chambo” in lake ikapu, southern Tanzania?
2013
Tested for hybrid origins of the Lake Ikapu Oreochromis population using morphological, mitochondrial DNA and microsatellite DNA evidenceCompletedRoyal Society-Leverhulme Africa Award.ASILATU HAMISI SHECHONGEMSc thesisLake Ikapu population has originated following hybridization between O. shiranus and representatives of the subgenus O. (Nyasalapia), and successfully adapted to shallow macrophyte-rich habitat
TAFIRIAquatic ecosystems & BiodiversityNile tilapia invades the Lake Malawi catchment
2013
To assess the extent/magnitude of the two recently introduced Oreochromis species into the Lake Malawi (‘Nyasa’ in Tanzania) catchment, including the prolific invader O. niloticus, and propose their threats to the unique biodiversity and genetic resources of the catchment CompletedRoyal Society-Leverhulme Trust Royal Award and a Genner, M.J., Connell, E., Shechonge, A., Smith, A., Swanstrom, J., Mzighani, S., Mwijage, A., Ngatunga, B.P., Turner, G.FJournalThe study that policymakers from the riparian countries of Lake Malawi should address the challenges of conservation of genetic resources accompanied with tilapiine-based aquaculture from a multilateral perspective, to protect the indigenous biodiversity and fish stocks of the region. https://www.tandfonline.com/doi/abs/10.2989/16085914.2013.842157
TAFIRISocio-economics & MarketingAn assessment of the socio-economic status of fishers’ communities in Lake Victoria, Tanzania in relation to poverty
2013
To examine the socio economic status of the fishers to assess whether fishers poverty is being reduced, increased or if there is no change on it and whether poverty is still an issue to be addressed in the lake regionCompletedEuropean Union (IFMP)Joseph Luomba, Mwanahamisi Salehe, Elizabeth MlahagwaJournalNeed to improve availability and accessibility of social facilities and services in fishing communities https://www.academia.edu/4689612
TAFIRISocio-economics & MarketingRole of Beach Management Units in Implementing Fisheries Policy: A Case of Two BMUs in Lake Victoria, Tanzania
2013
To examine how the BMUs have performed in terms of implementing fisheries policy in Lake Victoria, TanzaniaCompletedUnited Nations University Training ProgramJoseph LuombaTechnical ReportBMUs requires continuous training and collaboration from government and other stakeholders to improve on their performance https://www.grocentre.is/static/gro/publication/268/document/luomba13prf.pdf
TAFIRIClimate change & environmentHas climate change disrupted stratification patterns in Lake Victoria, East Africa?
2013
To investigate thermal stratification in Lake Victoria and its impacts to fisheries CompletedImplementation of Fisheries Plan of Lake VictoriaMarshall, B.E., Ezekiel, C.N., Gichuki, J., Mkumbo, O.C., Sitoki, L., Wanda, F. JournalPreparedness to impacts from climate change to the environment and fisheries is important https://www.tandfonline.com/doi/pdf/10.2989/16085914.2013.810140
FOREIGN INSTITUTIONAquacultureCommunity-led integrated polyculture of Sea cucumber (Holothuria scabra) and Seaweed (Kappaphycus alvarezii) at Ushongo, Pangani in Tanzania
2013
1) To evaluate growth, health and survival of both species when co–cultured in the integrated polyculture system. 2) To determine the potential of this form of polyculture for the reduction of biodeposits (organic matter sediments) in the integrated system compared to monoculture systems. 3) To determine the workload of the people involved in the farming system and revenue after selling the produce. 4) To assess the perception of the people towards sea cucumber mariculture.Completed The German Academic Exchange Service (DAAD) and ZMT Godfrey FabianiMSc thesis1) In this review it is recommended that high growth performance of seaweed in co-culture with sea cucumbers can be obtained in Tanzania, using high densities of seaweed (500 gm-2) and low densities (200 gm-2) of sea cucumbers. 2) Equally, co-culture offers a more efficient use of limited coastal space. 3) The sea cucumber H. scabra is highly viable for lagoon co-culture with seaweed 4) The initial investment can be an obstacle but the use of local materials to construct culture facilities may help. 5) Sea cucumbers seeds or juveniles should not be wild dependent for any sustainable mariculture of sea cucumbers as it has already been declined and could result in the loss of biodiversity of species. 6) both species contribute to the ecosystem health. https://www.tafiri.go.tz
UDSMAquacultureAquaculture of Nile tilapia (Oreochromis niloticus Linnaeus, 1758) with an assessment of its economic benefit in the Lake Victoria basin, Tanzania
2013
Examine the aquaculture of Nile tilapia (Oreochromis niloticus) and assess its economic benefits in the BasinCompletedLake Victoria Research (VicRes) Initiative project and the Government of Tanzania (GoT) through Commission for Science and Technology (COSTECH)Amon Paul ShokoPhD thesisMaximum yields and economic benefits in Nile tilapia farming in the Lake Victoria Basin can be attained through:- (i) proper fish pond management, (ii) integrating fish farming with other existing on-farm activities (e.g. fish-vegetable integration), (iii) polyculture (e.g. Nile tilapia-catfish culture), and or (iv) monoculture system under optimum stocking densities.
SUAAquacultureFeeding selectivity of wild and pond-cultured Nile tilapia Oreochromis niloticus in the Lake Victoria basin in Mara, Tanzania
2013
To compare algal selectivity between wild and pond-cultured Nile tilapiaCompletedTanzania Higher Education Students Loan BoardC RumishaMSc thesisNutrient enrichment in the lake can be controlled by enforcing the existing laws and regulations against water pollution and by providing adequate education to local communities and other stakeholders. https://www.tandfonline.com/doi/abs/10.2989/16085914.2013.784698
TAFIRIFish biology Fishing for Dagaa with 5 mm and 10 mm mesh nets: A comparison of length-frequencies and biological characteristics
2013
To determine an appropriate mesh size for Dagaa fishing in Lake VictoriaCompletedLake Victoria Fisheries Research Project (LVFRP)Philemon E. Nsinda, Batman S. Msuku, Hillary D. Mrosso JournalGiven the absence of differences in key parameters under investigation between the fish caught with the 5 and 10 mm mesh sizes, the two meshes can be used interchangeably http://dx.doi.org/10.1080/14634988.2013.823075
TAFIRIAquacultureNile tilapia invades the Lake Malawi catchment
2013
To assess the extent/magnitude of the two recently introduced Oreochromis species into the Lake Malawi (‘Nyasa’ in Tanzania) catchment, including the prolific invader O. niloticus, and propose their threats to the unique biodiversity and genetic resources of the catchment CompletedRoyal Society-Leverhulme Trust Africa Award and a NERC DTG studentship Genner, M.J., Connell, E., Shechonge, A., Smith, A., Swanstrom, J., Mzighani, S., Mwijage, A., Ngatunga, B.P., Turner, G.FJournalThe study that policymakers from the riparian countries of Lake Malawi should address the challenges of conservation of genetic resources accompanied with tilapiine-based aquaculture from a multilateral perspective, to protect the indigenous biodiversity and fish stocks of the region. https://www.tandfonline.com/doi/abs/10.2989/16085914.2013.842157
TAFIRIFish biology Length Frequency Distribution, Mortality Rate and Reproductive Biology of Kawakawa (Euthynnus affinis-Cantor, 1849) in the Coastal Waters of Tanzania (2013).
2013
To investigate the size structure, growth parameters, mortality and reproductive aspects such as sex ratios, length at first maturity and spawning patterns of kawakawaCompletedCanadian International Development Agency through MUN/UDSM projectM.G. Johnson and A.R. TamatamahJournalThe study recommended further exploration of the spawning habitats, migration pattern, the stock structure and if Kawakawa appearance correspond to its spawning migration for effective implementation of successful management strategy https://scialert.net/abstract/?doi=pjbs.2013.1270.1278
TAFIRIAquatic ecosystems & BiodiversityCoelacanth genomes reveal signatures for evolutionary transition from water to land (2013
2013
To elucidate the evolutionary trajectories of five coelacanths, including four Latimeria chalumnae individuals (three specimens from Tanzania and one from Comoros) and one L. menadoensis individual from Indonesiafrom water to land through analyzing their whole-genome sequences and extensive comparative genomic analysis from various perspectivesCompletedKAKENHI (Grant-in-Aid for Scientific Research) for Priority Areas “Comparative Genomics” from the Ministry of Education, Culture, Sports, Science and Technology of Japan (No. 16064101), a KAKENHI to N.O. (No. 21227002), and a KAKENHI for Innovative Areas “Genome Science” (No. 221S0002)Nikaido M., Noguchi H., Nishihara H., Toyoda A., Suzuki Y., Kajitani R., Suzuki H., Okuno M., Aibara M., Ngatunga B. P., Mzighani S. I., Kalombo H. W. J., Masengi K. W. A., Tuda J., Nogami S., Maeda R., Iwata M., Abe Y., Fujimura K., Okabe M., Amano T., Maeno A., Shiroishi T., Itoh T., Sugano S., Kohara Y., Fujiyama A. and Okada NJournalThe lower heterozygosity rates of the coelacanths in the Western Indian Ocean relative to those of the Indonesia call upon a need to promote conservation-related genetic studies for protecting this “priceless heritage from the past” from extinction
TAFIRIAquatic ecosystems & BiodiversityHas climate change disrupted stratification patterns in Lake Victoria, East Africa? (2013)
2013
To determine temperature changes in Lake Victoria waters CompletedEuropean Union through Lake Victoria Fisheries Organisation (LVFO). Marshall, B.E., Ezekiel, C.N., Gichuki, J., Mkumbo, O.C., Sitoki, L., Wanda, FJournalThe study concluded that the behaviour of lakes in response to climate warming vary considerably, and perhaps unpredictable, thus further investigations are needed to verify that climate change disrupted stratification patterns in Lake Victoria. http://dx.doi.org/10.2989/16085914.2013.810140
TAFIRIAquatic ecosystems & BiodiversitySingle-male paternity in coelacanths (2013)
2013
To investigate the genetic diversity of the two only available coelacanth broods - gravid females and their offspringCompletedUniversity of Bochum, University of Würzburg and the Deutsche Forschungsgemeinschaft (DFG Fr369/22-1)Lampert, K.P., Blassmann, K., Hissmann, K., Schauer, J., Shunula, P., el Kharousy, Z., Ngatunga, B.P., Fricke, H., Schartl, MJournalCoelacanths therefore appear to present a monogamous mating system; and morphological traits is more important for the reproductive success. This study proved once more how extraordinary these animals are, thus should be conserved. https://doi.org/10.1038/ncomms3488
TAFIRIAquatic ecosystems & BiodiversityOrientation from open water to settlement habitats by coral reef fish: behavioral flexibility in the use of multiple reliable cues (2013)
2013
Investigate the attraction of the early life stage of the tropical reef fish Lutjanus fulviflamma to a variety of chemical and visual cues to test the hypothesis that fish are most attracted to chemical cues from aquatic vegetation and conspecifics, as these are relatively reliable cues for orientationCompletedThe Faculty of Science of the Radboud University Nijmegen; I.N. was funded through a VIDI grant from the Netherlands Organisation for Scientific Research (NWO); M.v.d.B. was supported by the Schure-Beijerinck-Popping FondsIgulu, M.M., Nagelkerken, I., van der Beek, M., Schippers, M., van Eck, R., Mgaya, Y.D.JournalPelagic fish and settlers possess the ability to use multiple reliable chemical cues to locate suitable early life stage habitats, although the importance of these cues is context-dependent. Hence conservation of nursery ground is important to facilitate wide choice of suitable habitats of these juvenile and other early life stages fish species. https://doi.org/10.3354/meps10542
TAFIRIAquatic ecosystems & BiodiversityMangrove Fish Production is Largely Fuelled by External Food Sources: A Stable Isotope Analysis of Fishes at the Individual, Species, and Community Levels from Across the Globe (2013)
2013
To explore the reliance of fishes on mangroves as a feeding habitat at multiple ecological levels: from individuals to species to communities in mangrove ecosystems; from across the globe, using a stable isotope approachCompletedThe Faculty of Science of the Radboud University Nijmegen. WOTRO Science for Global Development (NWO East Kalimantan Programme, project # WT 87- 301). VIDI grant from the Netherlands Organisation for Scientific Research (NWO)Igulu, M.M., Nagelkerken, I., van der Velde, G., Mgaya, Y.DJournalMangrove food items contribute little to the overall diet of fishes from interlinked mangroves-seagrass ecosystems https://link.springer.com/article/10.1007/s10021-013-9687-7
TAFIRIAquatic ecosystems & BiodiversityHas climate change disrupted stratification patterns in Lake Victoria, East Africa? (2013)
2013
To determine temperature changes in Lake Victoria waters CompletedEuropean Union through Lake Victoria Fisheries Organisation (LVFO). Marshall, B.E., Ezekiel, C.N., Gichuki, J., Mkumbo, O.C., Sitoki, L., Wanda, F.JournalThe study concluded that the behaviour of lakes in response to climate warming vary considerably, and perhaps unpredictable, thus further investigations are needed to verify that climate change disrupted stratification patterns in Lake Victoria. http://dx.doi.org/10.2989/16085914.2013.810140
TAFIRIFish biology Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria (2013)
2013
To determine the present genetic structure of cichlids species and elucidate how this structure relates to the ecological conditions that caused their adaptation through analyzing the genetic structure of two pelagic and seven littoral species from the southeast area of Lake Victoria using sequences from the mtDNA control region and 12 microsatellite loci as markersCompletedGrant-in-Aid for Scientific Research on Priority Areas No. 16057201 to HT and grants by the Ministry of Education, Culture, Sports, Science and Technology of Japan to NOTakeda, M., Kusumi, J., Mizoiri, S., Aibara, M., Mzighani, S.I., Sato, T., Terai, Y., Okada, N., Tachida, HJournalThe cichlid fish of Lake Victoria provide a good opportunity to study adaptive radiation. Future studies that use larger numbers of nuclear markers will help us understand this process in greater detail. https://dx.doi.org/10.1371%2Fjournal.pone.0074088
TAFIRIClimate change & environmentWind Patterns of Coastal Tanzania: Their Variability and Trends
2013
To explore the long-term directional and oscillatory patterns, and the extreme velocities, in Tanzanian coastal winds. The study also aimed at exploring any links with the large-scale climatic systems. A possible limitation in the study revolved around the assumption that data from land-based meteorological stations were representative of the wind field in the coastal domain. CompletedTAFIRI/WIOMSA/S.B. MahongoPhD thesisWinds along the coast of Tanzania are not related to dynamic processes in the Southern Ocean. https://www.ajol.info/index.php/wiojms/article/view/85853
TAFIRIFisheries EcologyDistribution and exploitation of Nile perch Lates niloticus in relation to stratification in Lake Victoria, East Africa
2013
They specifically examine whether there are any relationships between seasonal thermal cycles (stratification and turnover) and Nile perch vertical and horizontal distributions, and analyse the relationship of seasonally induced Nile perch distribution patterns and fish catches (exploitation). CompletedFunds for the acoustic surveys were provided by Lake Victoria Fisheries Organization through the European Union supported Implementation of a Fisheries Management Plan project (No. 8 ACP ROR 029). Th Taabu-Munyaho, A., Kayanda, R. J., Everson, I., Grabowski, T. B., and Marteinsdóttir, G. 2013.JournalThey conclude that, the population status of tropical pelagic fishes in areas where stratification is increasing should be monitored care- fully to ensure their stocks are not depleted. Larger individuals will likely be disproportionately impacted by elevated temperatures and stronger stratification with potential implications to the recruitment and population structure (Abookire et al., 2000; Marshall, 1988; Mtada, 1987). They suggest that in systems where stratification con- centrates individuals, their vulnerability to exploitation will increase. Therefore, management measures aimed at rebuilding their stocks, such as closed seasons, limitation of catch quotas or controlled fishing would be more effective if were implemented during the stratified period. Finally, our data suggest that stock assessment models should incorporate the impact of the concentration of fish into narrow depth layers during the stratified season and dispersion at other times of the year in order to more accurately reflect the status of stocks and the changing exploitation patterns. https://doi.org/10.1016/j.jglr.2013.06.009
TAFIRIStock Assessment & Fisheries StatisticsComparing echosounder efficiency using field observations.
2013
This paper compares results from a series of lakewide surveys conducted from February 2006 to August 2008, making use of the data from restricted regions within each, wherein the tracks are constrained by the lake structure. This should identify any systematic differences between the effectiveness of the two echosounders. As a further check on the overall system, from echosounder and through post processing, the acoustic backscatter from the lakebed was analysed on the basis of the same protocols as used for estimating the fish standing stock. CompletedThe Leverhulme Foundation Everson, I., Kayanda, R. J., and Taabu-Munyaho, A. 2013.JournalThis study has demonstrated that when the results from estimating the standing stock of fish acoustically from different surveys or echosounders are questioned, it is possible to check for consistency, using the substrate as a secondary standard. The selection of a suitable intercali- bration locality needs to consider potential variations in the chosen survey area. Such an exercise is useful in demonstrating the consistency of the results to ‘non acousticians’. This does not obviate the need, however, to monitor echosounder efficiency within a system over time and between units engaged in multiship surveys or contributing to a time series of results. Best practice indicates that passive sampling during surveys should provide suitable information. As data will be collected for most surveys, whether on lakes or on the continental shelves at sea, from which indices of substrate type can be calculated, there is merit in including these indices along with the results from the target species etc https://doi.org/10.1111/lre.12026
TAFIRIStock Assessment & Fisheries Statisticsestimates of commercial fish species in Lake Victoria; moving towards ecosystem based fisheries management
2013
This paper presents the results of the reanalysing of the LVFRP data according to the Anon (2008) protocol would extend the time series of results of the most recent surveys back and potentially throw light on recent changes in the fisheries and the ecosystem.CompletedThe Leverhulme Foundation Everson, I., Taabu Munyaho, A and Kayanda, R. 2013.JournalThe analysis presented in this paper has demonstrated that the acoustic method can be used to quantify several links in the Lake Victoria food web. This approach has the major advantage that the same sampling procedure is being used throughout, obviating the need for inter-comparison studies of methods. For completeness there is the need to ensure that the TS to size relationships for all components are equally comparable. https://doi.org/10.1016/j.fishres.2012.09.019
TAFIRIAquatic ecosystems & BiodiversityOrientation from open water to settlement habitats by coral reef fish: behavioral flexibility in the use of multiple reliable cues (2013)
2013
Investigate the attraction of the early life stage of the tropical reef fish Lutjanus fulviflamma to a variety of chemical and visual cues to test the hypothesis that fish are most attracted to chemical cues from aquatic vegetation and conspecifics, as these are relatively reliable cues for orientationCompletedThe Faculty of Science of the Radboud University Nijmegen; I.N. was funded through a VIDI grant from the Netherlands Organisation for Scientific Research (NWO); M.v.d.B. was supported by the SchureBeijerinck Popping FondsIgulu, M.M., Nagelkerken, I., van der Beek, M., Schippers, M., van Eck, R., Mgaya, Y.D.JournalPelagic fish and settlers possess the ability to use multiple reliable chemical cues to locate suitable early life stage habitats, although the importance of these cues is context dependent. Hence conservation of nursery ground is important to facilitate wide choice of suitable habitats of these juvenile and other early life stages fish species. https://doi.org/10.3354/meps10542
TAFIRIClimate change & environmentInvestigating the effect of winds and storms on shoreline erosion along the coast of Tanzania
2013
Oceanographic researchCompletedNot specifiedMahongo S, Shaghude Y JournalThe increasing trends of winds and storms are considered to have direct impact on the wave climate with increased risk of shoreline wave-induced erosion that is already affecting relatively many parts of Tanzania Journal of Shipping and Ocean Engineering, 3(1-2): 61-69.
TAFIRIClimate change & environmentUsing neural networks to forecast sea surface temperature anomalies in the western Indian Ocean
2013
Oceanographic researchCompletedNot specifiedMahongo SB, Deo MC JournalThe RMSE between observations and predictions is about 0.13°C and 0.06°C for the monthly and seasonal SST anomalies, while the average correlation coefficient is about 0.88 and 0.98, respectively. International Journal of Ocean and Climate Systems, 4(2): 133-150.
TAFIRIFish biology Ulcerative AeromonasInfections in Tilapia (Cichlidae: Tilapiini) from Mtera Hydropower Dam, Tanzania
2012
To investigate the influence of temporal effects on the prevalence of Bacterial infections in Tilapine species of Mtera Dam. CompletedWorld Bank- MACEMP PROJECTShayo SD., Mwita CJ and Hosea KM JournalMonitoring of water quality conditions help in reducing/prevent incidence of fish disease outbreaks in wild and aquaculture doi:10.4172/ scientificreports
TAFIRIFish biology Virulence of Pseudomonas and Aeromonas bacteria recovered from Oreochromisniloticus
2012
To test the virulence and antimicrobial sensitivity test bacterial isolates obtained from infected fish from Mtera Dam.CompletedWorld Bank- MACEMP PROJECTShayo SD., Mwita CJ and Hosea KM JournalThe study has provided an important understanding on virulence of the most pathogenic bacterial strains in fish and explores antibacterial drugs to overcome risk for disease outbreaks to the growing aquaculture industry in Tanzania (http://scholarsresearchlibrary.com/archive.html)
TAFIRIFisheries EcologyInter-guild differences and possible causes of the recovery of cichlid species in Lake Victoria, Tanzania
2012
To provide an insight into the inter-guild differences in the recovery of haplochromines along the research transect across the Mwanza Gulf in Lake Victoria (Tanzania)CompletedWOTRO and IFSMary A. Kishe-MachumuPhD thesis There is a strong resurgnce of some haplochromine species in the Mwanza Gulf that seems to be a lake-wide phenomenon. It gives hope that more species might recover as they adapt to the new environmental conditions. http://hdl.handle.net/1887/19854.
TAFIRIAquatic ecosystems & BiodiversityDid the loss of phytoplanktivorous fish contribute to algal blooms in the Mwanza Gulf of Lake Victoria?
2012
To estimate and compare the historical data on phytoplankton production and phytoplankton grazing by fish and establish the potential impact of the change in phytoplanktivorous fish on the algal biomass in the Mwanza Gulf.CompletedWOTRO,The Netherlands Ministry of Foreign Affairs,Witte, F., Silsbe, G. M. Hecky, R. E., Goudswaard, P. C., Guildford, S. J., Kishe-Machumu, M. A., Wanink, J. H.JournalIt is possible that if all the fish grazing were highly selective of a single relatively minor phytoplankton species then control on that phytoplankton species might be accomplished by fish grazing.While eutrophiccation increased, grazing rates of both fish and zooplankton, which were already low DOI 10.1007/s10750-011-0893-z
TAFIRIAquatic ecosystems & BiodiversityCichlid species diversity in naturally and anthropogenically turbid habitats of Lake Victoria, East Africa
2012
To investigate and compare the differences in densities and species diversity of haplochromines between stations in with the differences in densities and diversity before and after the environmental changes in the sub-littoral waters of the Mwanza Gulf.CompletedWOTRO, NUFFIC, the IFS, the Schure Beijerinck-PoppWitte, F., Seehausen. O., Wanink, J. H., Kishe-Machumu, M. A., Rensing, M. , Goldschmidt, T.JournalHuman impacts on the environment have led to a loss of species and ecological diversity in the sub-littoral waters in just three decades. Also, the upsurge of the Nile perch and poor water transparency strongly affected haplochromine densities, and likely species diversity. It also implies a serious warning for the other East African lakes with endemic cichlid flocks, as they are all prone to human induced eutrophication. DOI 10.1007/s00027-012-0265-4
FOREIGN INSTITUTIONAquatic ecosystems & BiodiversityImportance of mangroves and seagrass beds as nurseries for coral reef fishes in Tanzania
2012
To test the nursery hypothesis in a mangrove–seagrass–mudflat–coral reef gradient using the Tanzanian coastal waters as a model systemCompletedWOTRO, WIOMSAIsmael A KimireiPhD thesisMarine parks and reserves should include a mosaic of habitats if coastal fisheries are to be sustainable. Mangroves and seagrasses should be protected because they provide nursery function to many commercially important reef fishes https://www.researchgate.net/publication/235424816_Importance_of_mangroves_and_seagrass_beds_as_nurseries_for_coral_reef_fishes_in_Tanzania
TAFIRIFisheries EcologyThe diet of Nile perch, Lates niloticus (L.) after resurgence of haplochromine cichlids in the Mwanza Gulf of Lake Victoria
2012
To examine whether the Nile perch in the Mwanza Gulf switch back to haplochromines as their major food source after the resurgence of some species by comparing to a subset of data that were collected in 1988–1998 from an area that partially overlapped with our transect.CompletedWOTRO, The NetherlandsKishe-Machumu, M, A., Witte, F., Wanink, J. H., Katunzi, E. F. B. JournalSince haplochromines, are taken as a by-catch in the dagaa fishery, management measures in dagaa fishery should take haplochromines into account. If the recovery of the haplochromine cichlids will continue, high dependence of the Nile perch on haplochromines and low rates of cannibalism, may contribute to another round of the Nile perch success in Lake Victoria. DOI 10.1007/s10750-011-0822-1
UDSMModelling coral-corallimorpharia interaction under varying anthropogenic inputs along the coast of Tanzania
2012
To investigate the interaction between corals and corallimorpharians under varying anthropogenic inputs using observational, experimental and modelling approachesCompletedSwedish International Development Cooperation AgenRushingisha GeorgeMSc thesisLow nutrient conditions in coastal habitats would facilitate coexistence between corals and corallimorpharians http://41.86.178.5:8080/xmlui/handle/123456789/8821
TAFIRIClimate change & environmentWind Patterns of Coastal Tanzania: Their Variability and Trends
2012
The specific objectives of the study were to explore the long-term directional and oscillatory patterns, and the extreme velocities, in Tanzanian coastal winds. The study also aimed at exploring any links with the large-scale climatic systems. A possible limitation in the study revolved around the assumption that data from land-based meteorological stations were representative of the wind field in the coastal domain. CompletedWIOMSA S.B MahongoJournalWinds along the coast of Tanzania are not related to dynamic processes in the Southern Ocean. https://www.ajol.info/index.php/wiojms/article/view/85853
TAFIRIClimate change & environmentMonthly Variations in Sea Level at the Island of Zanzibar
2012
Comparison of rainfall and insight into the climatic changesCompletedWIOMSA and POGO-SCORSB Mahongo and J FrancisJournallevel, winds (NE and SE monsoons) and air temperature have been changing at Zanzibar steadily over the 20-year study period, probably as a consequence of the changing global climate. https://www.ajol.info/index.php/wiojms/article/view/73963
TAFIRIHydrobiology & Water pollutionPhysical and chemical characteristics of the Tanzanian inshore and offshore waters of Lake Victoria in 2005-2008
2012
To investigate the water quality dynamics of the lake, Tanzanian sideCompletedImplementation of Fisheries Plan of Lake VictoriaNgupula, G.W., Ezekiel, C.N., Kimirei, I.A., Mboni, E., Kashindye, B.BJournalFor fruitful and sustainable management of Lake Victoria and its catchment, needs to take an ecosystem approach, and to involve all key stakeholders https://doi.org/10.2989/16085914.2012.712503
TAFIRISocio-economics & MarketingFinding Space for Participation: Fisherfolk Mobility and Co-Management of Lake Victoria Fisheries
2012
To investigate the implications of the extent and nature of movement for co-management structures and processes.CompletedEuropean union (IFMP)Fiona Nunan, Joseph Luomba, Ernest Yongo, Konstantine Odongkara, Bwambale Mbilingi JournalFisheries co-management should create a system that enables the interests and concerns of migratory of fishers https://www.ncbi.nlm.nih.gov/pubmed/22661017
UDSMAquacultureSeaweed farming in Chwaka Bay: a sustainable alternative in aquaculture
2012
To assess the most common CBA activities practiced in the region through literature review and workshop discussion involving practitioners and key stakeholdersCompletedWIOMSAEklöf, J. S., Msuya, F. E., Lyimo, T. J., & Buriyo, A. S.JournalRealizing the potential of CBA in contributing toward food security in the WIO will necessitate concerted investment and capacity strengthening to overcome these systemic challenges in the sector.
TAFIRIAquatic ecosystems & BiodiversityChecklist of Tanzanian fishes
2012
To list the fish species found in Tanzania Mainland watersCompletedGBIF through COSTECHNgatunga, B. P., Lugendo, B. R. and Kishe-Machumu, M. A.Book ChapterAlthough a good number of fish species in Tanzanai both marine and freshwater are documented, high number of fish species are remained undescribed. There is a need of recruiting new taxonomists and extra effort to describe the ones which are yet described COSTECH repository
TAFIRIAquatic ecosystems & BiodiversityDid the loss of phytoplanktivorous fish contribute to algal blooms in the Mwanza Gulf of Lake Victoria?
2012
To estimate and compare the historical data on phytoplankton production and phytoplankton grazing by fish and establish the potential impact of the change in phytoplanktivorous fish on the algal biomass in the Mwanza Gulf.CompletedWOTRO,The Netherlands Ministry of Foreign Affairs, Stichting Leids Universiteits-Fonds, Schure-Beijerinck Popping Fonds and the van Tienhoven StichtingWitte, F., Silsbe, G. M., Hecky, R. E., Goudswaard, P. C., Guildford, S. J., KisheMachumu, M. A., Wanink, J. H.JournalIt is possible that if all the fish grazing were highly selective of a single relatively minor phytoplankton species then control on that phytoplankton species might be accomplished by fish grazing.While eutrophiccation increased, grazing rates of both fish and zooplankton, which were already low DOI 10.1007/s10750-011-0893-z
TAFIRIHydrobiology & Water pollutionPhysical and chemical characteristics of the Tanzanian inshore and offshore waters of Lake Victoria in 2005–2008
2012
Compare the different ecological zones (i.e inshore and offshore waters) in Lake Victoria, as they are impacted differently by disturbances in the lake and its catchment.CompletedImplementation of Fisheries Management Plan project (IFMP)Ngupula, G. W., Ezekiel, C. N., Kimirei, I. A., Mboni, E. and Kashindye, B. B. JournalThe inshore waters of Lake Victoria differ from the offshore waters in most physico-chemical parameters such as turbidity, DO, pH, nutrients and water transparency. Increased human influence, due to population growth and industrial development, play a major role as drivers of the current scenario. If the current trend continues, SRSi may become a limiting element for diatom production in the lake, both inshore and offshore. DO levels are now not a major problem in most of the lake, even in deep offshore waters, which contrasts with the past situation. However, with the current climate change scenarios and the warming trend of the lake waters, the Lake Victoria environment may continue to deteriorate. It is imperative, therefore, that concerted efforts be geared towards combating unsustainable human activities both in the lake and its catchment http://dx.doi.org/10.2989/16085914.2012.712503
TAFIRIHydrobiology & Water pollutionChoose of Heavy Metals Pollution Biomonitors: A Critic of the Method that uses Sediments total Metals Concentration as the Benchmark. International Journal of Environmental Research 6, 313-322.
2012
To identify seaweed that could be used for biomonitoring of specific heavy metals in coastal waters East Africa by applying a number of metals extraction procedures.CompletedVlamse Interuniversitaire Raad (VLIR)- Belgium.Okuku, E.O. and Peter, H.K.JournalThe use of total metal concentration for screening of potential biomonitor should be discouraged since the concentrations are not environmentally relevant and as such possible potential biomonitor candidates could be locked out. Where its use is necessary, such cases should also consider using BCR sequential extraction concentrations as a complimentary tool.
TAFIRIAquacultureAssessment of locally available feed ingredients for making quality Tilapia feeds in Tanzania
2012
1)To assess the availability and utilization of local feed resources for aquaculture in Tanzania 2)To determine nutrient composition of locally available feed ingredients 3)To formulate fish feed using locally available ingredientsCompletedCOSTECHKimirei,I. A, Fabian, G, Ulotu, E.E, Lamtane, A.H, Kulekana, J. J & Matiku, P.Technical Report1) Proper understanding of feeds and feeding aspects is very important as many participants seemed to lack that important knowledge. 2) Most of surveyed ponds were in poor conditions - an indication of poor pond management 3) Based on this study, it can be concluded that diet 1 (TAFIRI 1) and diet 3 (TAFIRI 3) performed well except diet 2 (TAFIRI 2) which showed poor results https://www.tafiri.go.tz
FOREIGN INSTITUTIONFisheries Information SystemsSeagrass meadows in Chwaka Bay: Socio-ecological and management aspects
2012
Determine how small-scale subsistence fishery disturbance affect seagrass fisheryCompletedStockholm University Gullström, M., Lyimo, T. J., Eklöf, J. S., Björk, M., Semesi, I. S., & de la Torre-Castro, M.PhD thesisSeagrass ecosystems support multiple ecological functions, including nursery grounds, food and refuge http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A589283&dswid=9685
TAFIRIFish biology Fishery and feeding ecology of Delagoa threadfin bream, Nemipterus bipunctatus (Valenciennes, 1830) along the coastal waters of Dar es Salaam
2012
To assess the fishery and feeding ecology (ontogenic changes in feeding) of N. bipunctatus along the coastal waters of Dar- es Salaam.CompletedWorld Bank- MACEMP PROJECTJoseph S. Sululu MSc thesisi) Handline as the main method for catching this species is highly recommended and it should be emphasized by fisheries managers to be used by others fishers who target medium size species such as Lethrinus, Siganus and many others. This method is selective in nature, it catches without threatening as it does not force to capture a fish. ii) The government should provide great loans to groups of artisanal fishermen so that they can purchase modern fishing vessels or motorized boats, so as to empower them fishing more seaworthy even during rough weather and be able to capture large catch of larger individuals. This could help to minimize over harvesting immature fishes in shallow waters. East Africana - UDSM
SUAClimate change & environmentTrace metal pollution and its influence on the community structure of soft bottom molluscs in intertidal areas of the Dar es Salaam coast, Tanzania
2012
Local authorities should act responsibly and enforce existing laws and regulations in order to protect biodiversity of soft bottom molluscs and other marine faunaCompletedVlaamse Interuniversitaire Raad – University Development Cooperation (VLIR-UOS)Cyrus Rumisha, Marc Elskens, Martine Leermakers, PhD thesisLocal authorities should act responsibly and enforce existing laws and regulations in order to protect biodiversity of soft bottom molluscs and other marine fauna. https://www.sciencedirect.com/science/article/abs/pii/S0025326X11006631
TAFIRIAquacultureCharacterization of Artemia from solar saltworks in Kenya (2012
2012
To study the effect of temperature on survival, growth and reproduction performance and of thermo-tolerance level of the Artemia franciscana strains, currently occurring in the saltworks in Kenya, in comparison with Vinh Chau Artemia and the original San Francisco Bay Artemia. CompletedFlemish Interuniversity Council, the Vlaamse Interuniversitaire Raad (VLIR) and the University Development Cooperation (UOS) Imani B. KapingaJournalGood performance of the Kenyan strain at higher temperatures has a potential to successfully used as a suitable strain for production in the salt works in the Malindi area, in Kenya. Library – Uniersity of Gent
TAFIRIAquatic ecosystems & BiodiversityIncrease in anoxia in Lake Victoria and its effects on the fishery, in: Padilla, P. (Ed.), Anoxia (2012)
2012
To explore the impact of hypoxia on the fishery of Lake VictoriaCompletedEuropean Union through Lake Victoria Fisheries Organisation (LVFO).Njiru, M., Nyamweya, C., Gichuki, J., Mugidde, R., Mkumbo, O., Witte, FJournalRecommended to exhaustively understand the natural and anthropogenic factors leading to anoxia and identify land practices or conditions that indirectly enhance deoxygenation in the lake to underpin water quality management. Also there is a need to effectively institute nutrient management aspects that integrates sustainability and conservation for reversing impacts of hypoxia. http://www.intechopen.com/books/anoxia/increase-in-anoxia-in-lakevictoria-and-its-effects-on-the-fishery
TAFIRIAquatic ecosystems & BiodiversityPopulation divergence in East African coelacanths (2012)
2012
To describe a population genetic study based on 71 adults of coelacanth, Latimeria chalumnae from the whole known range of the speciesCompletedUniversity of Würzburg, University of Bochum, Deutsche Forschungsgemeinschaft (DFG Fr 369/22-1), Bundesministerium für Umwelt, Naturschutz und Reaktorsicherheit, CNDRS Moroni and ACEP South AfricaLampert, K.P., Fricke, H., Hissmann, K., Schauer, J., Blassmann, K., Ngatunga, B.P., Schartl, MJournalDespite its undeniably slow evolutionary rate, the coelacanth still diversifies and is therefore able to adapt to new environmental conditions. Further research on ecological factors that drive slow evolutionary of the species should be done https://doi.org/10.1016/j.cub.2012.04.053
TAFIRIFish biology Correlation between nuptial colors and visual sensitivities tuned by opsins leads to species richness in sympatric Lake Victoria cichlid fishes (2012)
2012
To study sympatry of coexisting six cichlid fishes species from Mwaburugu in Lake Victoria through analyzing their color vision (opsins) and nuptial colorations; and demonstrate if the opsin tuning correlates with the nuptial coloration characteristic.CompletedMinistry of Education, Culture, Sports, Science, and Technology of Japan (no. 21227002) grant, JSPS Asia-Africa Science Platform Program, and Grant-in-Aid for JSPS Fellows (no. 229191) grantMiyagi, R., Terai, Y., Aibara, M., Sugawara, T., Imai, H., Tachida, H., Mzighani, S.I., Okitsu, T., Wada, A., Okada, NJournalThe study suggested that reproductive isolation through mate choice using color signals prevent sympatric interspecific hybridization, thereby maintaining the species diversity in sympatric species in Lake Victoria. https://doi.org/10.1093/molbev/mss139
TAFIRIFisheries EcologyTarget strength measurement of Nile perch (Lates niloticus: Linnaeus, 1758) in Lake Victoria, East Africa.
2012
Estimating the TS using in-situ measurements and gas bladder modelling to derive improved TS to length relationship for Nile perch for use in acoustic abundance estimation surveys. The second objective was to compare the results from in-situ, modelling, pilot study and cage experiments for the estimation of TS to length relationships and to evaluate their performance over the full length range of NileperchCompletedThe Leverhulme Foundation Kayanda, R., Everson, I., Munyaho, T and Mgaya, Y. 2012.JournalThe study has demonstrated that TS to length relationships can be generated using simple model comparing the frequency distributions of single target detections with measured length frequency from net hauls. In situations where the target species can be clearly distinguished. https://www.academia.edu/6825834/Target_strength measurements of Nile perch Lates niloticus Linnaeus 1758 in Lake Victoria East Africa
TAFIRIAquatic ecosystems & BiodiversityExtremely slow rate of evolution in the HOX cluster revealed by comparison between Tanzanian and Indonesian coelacanths (2012)
2012
To elucidate why the Tanzanian coelacanth (Latimeria chalumnae) has evolved slowly through determining the entire sequence of its HOX cluster and compare it with that of the Indonesian coelacanth (L. menadoensis) available in the literatureCompletedJSPS AA Science Platform Program, a Grant-in-Aid for Scientific Research (S) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and the Global COE Program “Deciphering Biosphere from Genome Big Bang” Higasa, K., Nikaido, M., Saito, T.L., Yoshimura, J., Suzuki, Y., Suzuki, H., Nishihara, H., Aibara, M., Ngatunga, B.P., Kalombo, H.W.J., Sugano, S., Morishita, S., Okada, N.JournalThe study revealed small genetic divergence between two coelacanth; and recommended to complete a whole genome wide and large scale population genetic analyses for effectively shedding light on the subje https://doi.org/10.1016/j.gene.2012.05.047
TAFIRIClimate change & environmentAnalysis of rainfall variations and trends in coastal Tanzania
2012
ReviewCompletedNot specifiedMahongo SB, Francis J JournalInter-annual and decadal variations showed that the year 2003 and the last decade (2000-2009) were the driest in the last half century. Western Indian Ocean Journal of Marine Science, 11(2): 121-133.
TAFIRIClimate change & environmentWind patterns of coastal Tanzania: Their variability and trends.
2012
Oceanographic researchCompletedNot specifiedMahongo SB, Francis J, Osima SE JournalTrends in the monthly mean and maximum wind speeds indicated that the winds have generally strengthened over the past three decades, the corresponding rates of increase being about 0.04-0.07 and 0.03-0.08 m.s-1.y-1 respectively, except for the monthly maximum speeds at Mtwara which declined at a rate of ~0.02. The maximum wind speed at Dar es Salaam remained almost unchanged. Western Indian Ocean Journal of Marine Science, 10 (2): 107-120.
TAFIRIClimate change & environmentPhysical and Geological Processes in Chwaka Bay
2012
Oceanographic researchCompletedNot specifiedShaghude YW, Mahongo S, Muzuka ANN, Nyandwi N Book ChapterThe present physical setting of Chwaka Bay is a result of the interaction of various physical and geological processes that acted predominantly during the Pleistocene-Holocene period (2) (PDF) Physical and Geological Processes in Chwaka Bay. Available from: https://www.researchgate.net/publication/256133451_Physical_and_Geological_Processes_in_Chwaka_Bay [accessed Jun 13 2020]. In: People, Nature and Research in Chwaka bay, Zanzibar, Tanzania. In: de la Torre-Castro, M. & T.J. Lyimo (eds). ISBN: 978-9987-9559-1-6. Zanzibar Town, WIOMSA, pp. 41-55.
TAFIRIAquatic ecosystems & BiodiversityInfluence of land use patterns on some limnological characteristics in the southeastern part of Lake Victoria, Tanzania
2011
To investigate the influence of human activities on limnological characteristics of Lake Victoria through analysis of inorganic nutrient concentrations, phytoplankton diversity and biomass at three locations with different land use patterns: Mwanza (urban/industrial), Magu (agricultural) and Kayenze (PristineCompletedWorld Bank-LIVEMP PROJECTShayo SD., Machiwa JF and Lugomela C Journali) Management measures geared to reducing sources of pollution (e.g. through proper urban waste management and sustainable land-use planning practices) in the lake basin should be promoted. ii)Continued monitoring of the lake’s limnology is important to elucidate the effectiveness of the management measures. http://dx.doi.org/10.1080/14634988.2011.599607
TAFIRIAquatic ecosystems & BiodiversityOntogenetic habitat use by mangrove/seagrass-associated coral reef fishes shows flexibility in time and space
2011
To examined spatio-temporal variations in ontogenetic habitat use by four common and commercially important mangrove/seagrass- associated coral reef speciesCompletedWOTROKimirei IA, Nagelkerken I, Griffioen B, Wagner C, Mgaya YDJournalShallow coastal fish habitats such as mangroves, seagrass and coral reefs should be protected together to ensure fisheries sustainability https://www.sciencedirect.com/science/article/abs/pii/S0272771410004270
TAFIRIAquatic ecosystems & BiodiversityCommunity Genetics Reveal Elevated Levels of Sympatric Gene Flow among Morphologically Similar but Not among Morphologically Dissimilar Species of Lake Victoria Cichlid Fish
2011
To examine genetic structure among selected species of Lake Victoria haplochromine cichlids in four island communitiesCompletedSwiss Science FoundationN. Konijnendijk, D. A. Joyce, H. D. J. Mrosso, M. Egas, and O. SeehausenJournalGene flow between closely related as is the case of Lake Victoria haplochromine species is rampant. Ensuring water clarity may contribute to the desired genetic and ecological diversity. https://doi.org/10.1186/s12862-017-1040-x
TAFIRICapture fishery Rapid stock assessment of mud crabs (Scylla Spp) in Rufiji, Mafia and Kilwa Sea Scape
2011
1) To identify and compare potentials of the selected sites in terms of mud crab abundances, 2) To identify which sites do have comparatively higher mud crab stock abundance at this sampling season, 3) To identify which class of mud crab are at high abundance (adults/juveniles) at this sampling season and 4) To assess the general potential of the selected areas in terms site sediment qualities.CompletedConsultancy report to WWF Tanzania Country Office Mathias Msafiri Igulu and Bigeyo KubojaTechnical ReportThere is a need for the mud crab fishery authority to develop a formal harvesting strategy that outline objectives, strategies, performance indicators and monitoring programme to support future stock assessment. Furthermore, there is a need for a long-term mud crab stock assessment that will cover both season and possible environmental drivers that govern distribution and abundance of the mud crab in this region.
TAFIRIAquatic ecosystems & BiodiversitySpatial and temporal patterns of phytoplankton abundance and composition in three ecological zones in the Tanzanian waters of Lake Victoria
2011
To investigate Phytoplankton abundance and composition in relation to physico-chemical parameters in the nearshore, intermediate, and deep offshore waters of Lake VictoriaCompletedImplementation of Fisheries Plan of Lake VictoriaGW Ngupula, ASE Mbonde & CN EzekielJournalGood management of water quality https://doi.org/10.2989/16085914.2011.589118
TAFIRIHydrobiology & Water pollutionSignificance of terrestrial inflows to carbon and nitrogen distribution in the Lake Victoria surface water
2011
To characterize seasonal and spatial distribution of particulate organic matter (POM) in the surface water of Lake Victoria at Speke Gulf, by using carbon-13 and nitrogen-15 isotopic signaturesCompletedInternational Atomic Energy Agency (IAEA)TUNGARAZA*, Rubhera MATO , Stelyus L. MKOMA1 and Charles Nyarongo EZEKIELJournalHuman activities in the watershed/catchment area should be well monitored https://doi.org/10.4314/ijbcs.v5i2.72132
TAFIRIStock Assessment & Fisheries StatisticsSpatial and temporal distribution of Nile Perch (Lates niloticus Linnaeus, 1758) in relation to oxygen in Lake Victoria Tanzanian side
2011
To investigate on how Nile perch are distributed in Tanzanian waters of the Lake Victoria in relation to oxygen and depth, based on historical experimental trawl data collected between October 1997 to August 2008CompletedThe Netherlands Organisation for International Cooperation in Higher Education (NUFFIC), World Bank under The LVEMP Project Phase I & European Union Under the, (LVFRP),Enock MlaponiMSc thesisThe Nile perch catch rates as an index of abundance with oxygen from the trawl data proven to vary with seasons and location in based on water depth and area zones; The differences are caused by the interactive effect between dissolve oxygen and season which were highly significant different, moreover the average catch per effort due to interactive effect of dissolved oxygen and depth on catch per unit of effort were also significant different. Seasonality change has been proven to affect the catch rate of Nile perch in Lake Victoria. Based on two seasons of dry and wet seasons the variation were significantly different, where by dry season shows to have higher catch rate ranging from 187.63 Kg per haul to 215.81 Kg per haul respectively with its mean at 201.72 Kg per haul, while wet season were ranging from its lower confidence limit of 172.24 Kg per haul to 181.84 Kg per haul with mean at 177.04 Kg per haul https://www.researchgate.net/publication/341727192_Spatial_and_temporal_distribution_of_Nile_Perch_Lates_niloticus_Linnaeus_1758_in_relation_to_oxygen_in_Lake_Victoria_Tanzanian_side
UDSMClimate change & environmentCoral bleaching and habitat effects on colonisation of reef fish assemblages: An experimental study.
2011
To examine the effects of bleaching and habitat structure on colonisation of coral reef fish assemblages.CompletedSidaYahya, S. A., Gullström, M., Öhman, M. C., Jiddawi, N. S., Andersson, M. H., Mgaya, Y. D., & Lindahl, U.JournalHabitat complexity affect colonisation of reef fish. This may have important implications for appropriate coral reef management. https://www.sciencedirect.com/science/article/abs/pii/S0272771411001326
TAFIRIStock Assessment & Fisheries StatisticsSeasonal and Spatial fluctuations of Nile perch abundance and Biomass in Mwanza Gulf, Lake Victoria.
2011
To quantitatively assess seasonal and spatial dynamics in the Nile perch biomass and size distribution in relation to limnological parameters such as temperature, chlorophyll a and oxygen studied along the productivity gradient in the Mwanza gulf, Lake Victoria Tanzania.CompletedNUFFICKashindye B.B. MSc thesisThe dominance of juvenile Nile perch (<40cm) in the gulf may be as the result of the open access policy to the fishery that has led the increase in effort. This study recommends restricting the existing rules by using the co management approach. The beach management unit (BMU) should be strengthened so that they can limit the entry of fishers and gears into the lake, and promote environmental protection of the beach. UNESCO-IHE
TAFIRIAquacultureThe Effect of Different Dietary Proportions of Cotton Seed Cake and Soybean Meal on the Growth Performance of Tilapia Fry, Oreochromis variabilis.
2011
Determination of affordable fish feeds using locally available materialCompletedLake Victoria Environmental Management Project (LVEMP)Shoko, A.P., F.M. Urasa, and Ndaro, S.G.M.JournalThese results suggest that diets containing cotton seed cakes could be used as an alternative diet in feeding O. variabilis. This recommendation is based on the fact that growth performance of O. variabilis fry fed cotton seed cake meal was better than those fed other experimental diets in this study and it is cheaper than fishmeal and abundant in supply in the area of study https://s3.amazonaws.com/academia.edu.documents/41383816/THE_EFFECT_OF_DIFFERENT_DIETARY_PROPORTI20160121-6996-7ggicm.pdf?response-content-disposition=inline%3B%20filename%3DTHE_EFFECT_OF_DIFFERENT_DIETARY_PROPORTI.pdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIATUSBJ6BAD2LKKHE4%2F20200601%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200601T072447Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&X-Amz-Security-Token=IQoJb3JpZ2luX2VjENj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJHMEUCIBIdFtli17d8cSUTShPB5WtJBndSDVu6us3kpFYZAj2SAiEAmI0n16TF%2F09IlJ5aUqfu9jifxIuAdxLe59tQTWUtHnkqtAMIQBAAGgwyNTAzMTg4MTEyMDAiDM6ifBURhwrEuwelwiqRA94kaL7iyz%2Bi9JpOHiCGYmmUUo1o6OUt9%2Bl9AL1zGBUB8nE1QGWEtYg1Cj0hQw%2BqAdrAmVJQaShRDHlDYIs2utpvGPnTKQGkGS2HabHMr73s6lfaF8esPVqxFW2PUZ4NAVBZ9eopV6vxEep15MeupRNaM4iVg26pVb1%2BDqMwW1TZUhgZjUWI%2FtQpCDyvgQ%2FDQUq3Cdbkz11YDRc%2FQu4Z87VvgyuanN6gFv9b2hp%2FAUrMrj2tZieQ5ogKZvL5MKw517t9F5qaMB1XB9ux1Z1kLiKHw524O0%2FkC4bRtnTO5%2F9KVRh7eD9AkB2wtn1VFyHksgIfN28AIdJC7zoWv3JAjf7qb6kOzyLZMA1c5MvXLOCkgZw8oRwKdZTdnUlt80RzX%2FgOscKqNDE6EdmwVo72MVQteJVxlOMVFLx6hHLb5pfn696Kh%2B4oWkpoQ0mpiEeOAs%2FveLPahsdE5IViECENRw97O9f3GIxWW0%2BRnTp5PZ8V8zVK4kQLTEWKlDKzuhC1cR3ay1V8%2F4TszciL5MLz9HOkMPvQ0vYFOusBpbNsCrdbW9uLrm06j0KZVF7%2ByQaoqtQy17tGK5gwHQMs%2Fc2TiJ4EdEblCmCTyXBqOxhBfDSJ%2BPGQPuoTnE6QIMTrMc%2Fz99%2FzZ1Secabj7zNlAnWqi72C%2BmzcMVfqyydah%2FEPeRqXFMk11v8vpJjVMhx8tSvAnY8pkR6FrJhX7%2FuxeugdEHlYK5pnyF9ndSPYeT62anXRemMdVojwb3clQ7pJ46rgf2Cm7NWTgTzC8fF3NJ0g33QFLQ5C%2Bb%2BCpJ%2BJsgoo59MHGTbQgd9edwUhM9lBSSieM%2B9PkiOCfgKPZ5uQDba078Hd6WqQ5g%3D%3D&X-Amz-Signature=2ca83cb4316a993192adb11f8742e84eb4d2e304eb97707d57032927bef51a74
TAFIRIAquacultureFishpond Performance of Nile Tilapia Oreochromis niloticus (Linnaeus, 1758) in the Lake Victoria Basin, Tanzania
2011
Determination of fishpond Performance of Nile Tilapia Oreochromis niloticus (Linnaeus, 1758) in the Lake Victoria Basin, TanzaniaCompletedLake Victoria Environmental Management Project (LVEMP)Shoko, A. P. A., Matola, H. D. Mzighani, S. and Mahika, G. C.JournalThe government of Tanzania should consider fish farming as an important activity, which will contribute positively to the livelihoods of her people. This can only be attained through proper collaboration and coordination between planning, research, management staff and fish farmers. The government through its fisheries division should ensure effective and well-coordinated fish farming extension services https://s3.amazonaws.com/academia.edu.documents/41383817/FISHPOND_PERFORMANCE_OF_NILE_TILAPIA_ORE20160121-10234-11r3cmx.pdf?response-content-disposition=inline%3B%20filename%3DFISHPOND_PERFORMANCE_OF_NILE_TILAPIA_ORE.pdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIATUSBJ6BALB35UPUZ%2F20200601%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200601T074310Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&X-Amz-Security-Token=IQoJb3JpZ2luX2VjENf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJHMEUCIQC7DAAehMCi6UNg9mnxNT6BmUloNzbZ5k8ohKZbvZQNrgIgKTy%2Bh4vcqtBCnPWirjN%2FuLxHeWEfuIOUAmYeQYWWbr0qtAMIPxAAGgwyNTAzMTg4MTEyMDAiDHT%2FshUJrdXI11GNgyqRA3sSnUXe2tuJbX1dWm0IXPjPR%2Bmf0skZnLWMrxfBpW4ApRoPZ%2BaG9uJ4hnJCVP5O6LoaFspvNEknvE1zHrmAPtvsYRk9zBHhpTWR%2BRBEPD2wwtI8SeB9YR48i7%2FNKZuHPAMCLOdqt6yD3yhTdXO25xhqrgqQJSUJBoXHz41jN%2FSAW9PwOaMRVT0mAaOzbpx57PSwVoFPpiCB8ubL1T4VW5d38S%2BaC6GcXrC8S9ltEhplVbiZmVdqfTWylPHMOTa7uj9n5XuX%2BY%2FYfj4bgjxOiMPjmUmVrBkRq3A7hCvqAbhS4N4F3sakL1Mag2DfNYwgq25vC3V%2FEG%2Bk4hDM9%2Bz5zhU2sgjOXxdTDCmSAPNH1CtqUe7cwEcahEio8jCui%2Fuj4Xp3svrMz0cYhujOMy37WL1eNawJyWCDqgW9Gs4oE0ZREnkdJaRMitlRESxjI8qmd31MZuf9DFBMtHKEq7CRPuJmBhwR9%2FG2BuiLltu%2FHTdDn3jJcYXlqGvnL5EHsb5QLrznN8JPdVVG5PfLhewCVSF2MPa20vYFOusBd2aSCV70qOjVU9zNW%2Fk8%2B2Qm8lamGqptErcb1%2FlINH3ygd1vFK42FXWn%2FxBN0lpmjXJuAqZQou%2FAjz4wiwV4rF5FuzHpxObc6PfMpmYc6KAVT0SAVJjT5iIclu25G8gN%2Fg7gCl9tknBa000YIYHHG8AZr5Gl68yp8xaWGyMqMZFDa30flcolfrsFLgguZCinXOGLgKcxvILc0KG9Ut%2BYE49XLitevzquXQ%2FM4Nyx%2BRWi69t2K%2BgfKyMHB4MrFAMQunZJEFNturqGzZnE3B9nd0MkWxv9iwIYX%2FeMAkh2ZSVYngVX8z0QRWK%2FGg%3D%3D&X-Amz-Signature=d834976c094619dfac017cb5aa0a458be219fb50bdb8991d01e86d7d4312a0cf
TAFIRIAquacultureGrowth Performance, Yields and Economic Benefits of Nile Tilapia Oreochromis niloticus and Kales Brassica oleracea culturedunder Vegetable-Fish Culture Integration
2011
Determination of Growth Performance, Yields and Economic Benefits of Nile Tilapia Oreochromis niloticus and Kales Brassica oleracea culturedunder Vegetable-Fish Culture Integration.CompletedLake Victoria Research Initiative (VicRes)Shoko, A. P., Getabu., A. Mwayuli, G. and Mgaya, Y.D. JournalFish farmers could improve yields and profits by integrating fish farming with other on-farm activities. https://www.ajol.info/index.php/tjs/article/view/73613
TAFIRIFisheries EcologyReview of the Tanzanian prawn Fishery
2011
Determine factors responsible for the collapse of prawn fishery of TanzaniaCompletedNorwegian Loan FundMathew Ogalo SilasMSc thesisPrawn collapse is due to combination of lower river discharge and higher fishing pressure http://bora.uib.no/bitstream/handle/1956/5584/84856931.pdf?sequence=1
TAFIRIAquacultureIntegrating Agriculture and Aquaculture for Increased Farm Productivity
2011
i. Determine the effect of fish-vegetable integration on growth performance, yields and economic benefits of both fish and vegetables ii. Determine the effect of fish-poultry integration on growth performance, yields and economic benefits of both fish and poultry iii. Determine the effect of fish-vegetable-poultry integration on growth performance, yields and economic benefits of fish, poultry and vegetablesCompletedTanzania Commission for Science and Technology (COSTECH)Shoko, A. P. , Lamtane , H. A. and Limbu, S. M.ProjectsFish farmers can increase overall farm productivity by integrating fish farming with other on farm activities.
TAFIRIAquacultureBuilding Public Private Sector Partnership to Enhance Productivity and Competitiveness of Aquaculture in the EAC Region
2011
Activities on Results Area 1: Generation of improved aquaculture technologies and market innovations Activity 1.1 Consolidate knowledge of aquaculture value chains Activity 1.2 Strengthen seed value chains Activity 1.3 Strengthen feed value chain Activity 1.4 Fish production value chain Activity 1.5 Assess market potential and constraints Activity 1.6 Market innovations Activities on Results Area 2: Improved policy options for aquaculture development generated Activity 2.1 Review the legal framework Activity 2.2 Review the regulatory framework Activities on Results Area 3: Capacity for gender responsive aquaculture research for development in the ECA sub-region strengthened Activity 3.1 Strengthen capacity of stakeholders to engage in productive and profitable aquaculture Activities on Results Area 4: Access to information on aquaculture enhanced Activity 4.1 Target, package and disseminate information products from technology and market innovationsCompletedAssociation for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA)Owour Wadunde, Katunzi, E.F.B., Shoko, A. P., Musiba, M. and Harosson Karissa CharoProjectsAquaculture productivity can be improved through Public Private partnership (PPP)
TAFIRIAquacultureA critical look at the current gillnet regulations meant to protect the Nile Perch stocks in Lake Victoria
2011
To examine the combined effects of Gillnets and long line on the Nile perch fisheries of Lake Victoria. It also assess the usefulness of slot size of Nile perch (50 -85 cm TL) CompletedThe Implementation of a fisheries management plan project (IFMP) for Lake Victoria B. S. Msuku, H. D. J. Mrosso, and P. E. Nsinda JournalTo shift from fishing Nile perch with 5 inch mesh to 7 inch mesh size. It was also recommended to curb growth overfishing by protecting the young fishes and introduce quotas system to fish processing factories to balance between fish availability and exploitation http://dx.10.1080/14634988.2011.604567
TAFIRIFish biology Wild Black-lip Pearl Oyster (Pinctada margaritifera) Spat Collection in Tanzania (2011)
2011
To assess the spatial and temporal variation in abundance of spat at selected sites along the Tanzanian coastCompletedSwedish International Development Cooperation Agency (SIDA) through its Department for Researcch Cooperation (SAREC) and the WIOMSA through its Marine and Coastal Science for Managemenshengoma, E.B., Jiddawi, N.S., Tamatamah, R.A. and Mmochi, A.JournalFurther research is needed in particular, to establish the long-term (>2 years) consistency in spatial and temporal abundance of P. margaritifera spat as it will facilitate the determination of the location of breeding oyster populations, enabling placement of spat collectors in areas that will maximize spat collection. https://www.ajol.info/index.php/wiojms/article/view/74183
TAFIRIFish biology Distribution of Nile perch Lates niloticus in southern Lake Victoria is determined by depth and dissolved oxygen concentrations (2011)
2011
To study the impacts of water depth, temperature and DO concentrations on Nile perch distribution. CompletedResearch and Technology of the Netherlands Minister of Development Cooperation and the Netherlands Foundation for the Advancement of Tropical Research (WOTRO) grants W87-129, W87-161, W87-189 and W84-488Goudswaard, P.C., Katunzi, E.F.B., Wanink, J.H., Witte, F.JournalDissolved concentration (DO) and the interaction of depth and DO concentration explained the distribution of Nile perch, and so, its migration is driven by driven by hypoxic situation. Sudden upwelling of hypoxic deep layers is a threat to the Nile perch stock and the Nile perch fishery • https://doi.org/10.2989/16085914.2011.589112
TAFIRIFish biology Genetically distinct coelacanth population off the northern Tanzanian coast (2011).
2011
To determine the complete mtDNA genomes of 21 additional Tanzanian and 2 Comoran coelacanth individuals and analyze them together with the published sequences for examining whether a genetically distinct, reproducing coelacanth population exists off the Tanzanian coast.CompletedResearch grants from the Japan Society for the Promotion of Science AA Science Platform Program and the Ministry of Education, Culture, Sports, Science and Technology of Japan (to N.O.)Nikaido, M., Sasaki, T., Emerson, J.J., Aibara, M., Mzighani, S.I., Budeba, Y.L., Ngatunga, B.P., Iwata, M., Abe, Y., Lie, W.-H., Okada, NJournalThe coelacanths off the northern Tanzania coast should be important as a conservation unit. Further research to obtain more information from larger datasets, such as whole genome sequences, which will lead to further understanding of the population structure of coelacanths. The coelacanths off the northern Tanzania coast should be important as a conservation unit. Further research to obtain more information from larger datasets, such as whole genome sequences, which will lead to further understanding of the population structure of coelacanths.
TAFIRIAquatic ecosystems & BiodiversityThe potential role of visual cues for microhabitat selection during the early life phase of a coral reef fish (Lutjanusfulviflamma) (2011)
2011
To investigated in dual choice laboratory experiments the visual attraction of recent settlers of a reef fish (Lutjanusfulviflamma) towards different microhabitats, conspecifics, and heterospecifics, and the interactive effects among these cues.CompletedFaculty of Science of the Radboud University Nijmegen. I.N. was funded through a VIDI grant from the Netherlands Organisation for Scientific Research (NWO). H.L. was supported by the Schure–Beijerinck–Popping FundIgulu, M.M., Nagelkerken, I., Fraaije, R., van Hintum, R., Ligtenberg, H., Mgaya, Y.D.JournalThe multimodality in choice behavior and flexibility in cue use may constitute a good adaptive strategy to increase successful orientation towards difficult-to-target early life stage habitats that provide benefits in terms of increased survival and fitness https://doi.org/10.1016/j.jembe.2011.01.022
TAFIRIAquatic ecosystems & BiodiversityMinor water bodies around southern Lake Victoria—a replica of lost Biodiversity
2010
To compare the common taxa in Lake Victoria to those of the satellite lakes; To identify rare speciesCompletedLake Victoria Environment Management Project (LVEME. F.B. Katunzi a , A. Mbonde b , R. Waya b & H. D.J. MrossoJournalIn attempt to promote conservation of rare species, a concrete conservation strategy to address Lake Victoria, the satellite lakes should feature as the natural brood stocks for both aquaculture and scientific investigations http://dx.doi.org/10.1080/14634988.2010.506850
TAFIRICapture fishery Small and forgotten yet important fishery: The small shrimps (uduvi) of the Rufiji Delta, Tanzania.
2010
appraising the marketing of sergestid shrimp Acetes locally known as uduviCompletedWIOMSAS.B. Mahongo, P.O. Onyango & C.A. MwakosyaNewslettera) Given the importance of uduvi to the population that handles and uses it, some form of management of the product can go a long way in improving the fisheries of this crustacean resource. b) Although uduvi is traded at low quantities, it could be the case that poor transport infrastructure contributes to the low trade. It is therefore important to improve transport especially in the Rufiji Delta so as to increase trade in uduvi. c) There is need to promote other uses of uduvi, this may have an effect in diversifying the handling and processing methods. d) Further studies should be focused on among other aspects, assessment of the uduvi stock in the Delta, supply trends and costs of fishing. www.wiomsa.org
TAFIRIAquatic ecosystems & BiodiversityUpwelling couples’ chemical and biological dynamics across the littoral and pelagic zones of Lake Tanganyika, East Africa
2010
The objectives of this study were to evaluate the effects of upwelling in the pelagic and littoral zones of Lake Tanganyika and to quantify spatial variation in upwelling along the shoreline. CompletedNational Science Foundation (ATM-0223920, INT-0321R. Corman, P. B. McIntyre, Kuboja, B., W. Mbemba, D. Fink, C. W. Wheeler (2010).JournalThere is growing concern that global warming may suppress upwelling in Lake Tanganyika (O’Reilly et al. 2003; Verburg and Hecky 2003) and other tropical lakes (Vollmer et al. 2005) causing decreases in pelagic produc- tivity (although see Sarvala et al. 2006). Given the strong effects that upwelling had in the littoral zone, strengthening of the thermal stratification in the lake could have signi- ficant effects on the influx of nutrients into the epilimnion and energy flow into the littoral food webs. https://doi.org/10.4319/lo.2010.55.1.0214
TAFIRIAquatic ecosystems & BiodiversityThe Status of Lake Victoria Environment: Trends and Impacts to Fish Stocks
2010
To assess trends of the environment and its impacts to Fish stocks in Lake VictoriaCompletedImplementation of Fisheries Plan of Lake VictoriaGichuki, J., A. Getabu, C. Ezekiel, and O.C. Mkumbo Book ChapterLake Victoria’s future sustainability requires effective management of fishing effort and phosphorous loading www.igi-global.com/chapter/status-lake-victoria
TAFIRIClimate change & environmentThe Environment of Lake Victoria (East Africa): Current Status and Historical Changes
2010
To assess the Current Status and Historical changes of the Environment of Lake VictoriaCompletedImplementation of Fisheries Plan of Lake VictoriaLewis Sitoki, John Gichuki, Charles Ezekiel, Fred Wanda, Oliva C. Mkumbo And Brian E. MarshallJournalAppropriate management of the catchment/watershed was recommended onlinelibrary.wiley.com/doi/abs/10.1002/iroh
TAFIRIStock Assessment & Fisheries StatisticsSpatial and temporal relationships between fish abundance and fishing effort in Lake Victoria Tanzania
2010
To determine Spatial and temporal relationships between fish abundance and fishing effort in Lake Victoria TanzaniaCompleted Norwegian governmentMboni Valeria ElisonMSc thesisIt is likely that fishing is not the only factor driving the changes in Lake Victoria; The lake also is facing environment c There is need to examine the effect of environment in Nile perch stocks. https://www.tafiri.go.tz/publications/Thesis.pdf
TAFIRIAquatic ecosystems & BiodiversitySpatial and temporal patterns in abundance and distribution of zooplankton in the Tanzanian waters of Lake Victoria
2010
Investigating abundance and distribution of zooplankton in spatio-temporal dimensions in Lake Victoria – Tanzanian side of the LakeCompletedImplementation of Fisheries Plan of Lake VictoriaNgupula, G. W. , Waya, R. K. and Ezekiel, C. N. JournalAppropriate management of the catchment/watershed is a suitable approach for ecological sustainability and integrity https://doi.org/10.1080/14634988.2010.525077
TAFIRIHydrobiology & Water pollutionConcentrations of Cyanobacteria and Microcystins in the near shore waters of Lake Victoria, Tanzania
2010
To investigate the spatial distribution of the phytoplankton community in relation to environmental parameters and to assess the status and potential of cyanotoxin (microcystin) production by cyanobacteria in the lake.CompletedNetherlands Fellowship ProgramAthanasio Stephano MbondeMSc thesisThe installation of wastewater treatment plants to reduce eutrophication is highly recommended. Such wastewater treatment systems may include also the extension of wetlands along the shoreline. -
TAFIRIAquatic ecosystems & BiodiversityChanges in abundance of Nile shrimp, Caridina nilotica (Roux, 1833) following the decline of Nile perch and recovery of native haplochromine fishes, Lake Victoria, Tanzanian waters
2010
In this study we intend to answer the following questions; what is the current status of Caridina nilotica after haplochromines reappearance; Is the selectivity of fishery changing the population structure of the perch; and What is the contribution of Caridina nilotica to the diet of perches; It is the purpose of this study to discuss the main drivers of these changes; that is increasing eutrophication, selectivity of fishery or overfishing.CompletedEuropean Union Under the Lake Victoria Fisheries Research Project, (LVFRP), World Bank under The Lake Victoria Environmental Management Project (LVEMP) Phase I & II,Ngupula, G. W. and Mlaponi, E. JournalThe current low abundance of C. nilotica in the lake is explained by the increase in predation on its juveniles by the recovering haplochromines and by dagaa and the juvenile perches as well. Fishing pressure, selectivity of fishery and eutrophication are the main driving factors for this regime shift. Since C. nilotica are so important in young Nile perch and haplochromine diets, future recruitment of Nile perch can be adversely affected by its further decline, and therefore we call upon for a continued research and monitoring of the diet of Nile perch and abundance of C. nilotica Aquatic Ecosystem Health & Management, 13: 2, 196 — 202 DOI: 10.1080/14634988.2010.483188 URL:http://dx.doi.org/10.1080/14634988.2010.483188
TAFIRIClimate change & environmentBioavailability of Sediment-bound Heavy Metals on the East African Coast.
2010
To comparing the environmental availability of heavy metals in sediments samples collected from selected locations along the East African coast using three step-BCR sequential extraction.CompletedVlamse Interuniversitaire Raad VLIR- Belgium.Okuku, E.O., Mubiana, V.K., Hagos, K.G., Peter, H.K. and Blust, R. JournalSince we found that metals in East African coastal sediments are natural in origin then future exposure assessments (especially if the results are to be used for Environmental Risk Assessment) should focus on bioavailable metals. https://www.ajol.info/index.php/wiojms/article/view/73959
SUAFish biology Fish assemblages in Tanzanian mangrove creek systems influenced by solar salt farm constructions
2010
investigated whether there were spatial and seasonal differences in fish assemblage composition among sites naturally fringed by mangrove forest and sites located in areas deforested for salt farms.Completedthe Swedish International Development Cooperation Agency (Sida) through the Sida/SAREC Bilateral Marine Science Programme between Sweden and TanzaniaMwandya, A. W., Gullström, M., Öhman, M. C., Andersson, M. H., & Mgaya, Y. DPhD thesismangrove habitat loss and changes in environmental conditions caused by salt farm developments will decrease fish densities, biomass and species numbers as well as alter the overall fish assemblage composition in the salt farm https://www.sciencedirect.com/science/article/pii/S0272771408004873
TAFIRIAquacultureEvaluation of Yields and Growth Performance of Nile tilapia (Oreochromis niloticus) with Ningu (Labeo victorianus) and African catfish(Clarias gariepinus) in Earthen Pond, Kenya.
2010
Determination of Yields and Growth Performance of Nile tilapia (Oreochromis niloticus) with Ningu (Labeo victorianus) and African catfish (Clarias gariepinus)CompletedLake Victoria Research Initiative (VicRes)Oenga, D. N., Mgaya, Y. D., Mbahinzireki,G, Shoko, A. P., and Nyanchiri, E.JournalFish farmers could attain higher growth performance and yield by culturing Nile tilapia and African sharptooth catfish in polyculture than the Nile tilapia-Labeo combination. http://www.erepository.nara.ac.lk/bitstream/handle/1/88/SLJNARAJ-2010-33.pdf?sequence=2&isAllowed=y
SUAFish biology Distribution patterns of striped mullet Mugil cephalus in mangrove creeks, Zanzibar, Tanzania
2010
To determine of the density of juvenile mullet differed significantly among creeksCompletedthe Swedish International Development Cooperation Agency (Sida) through the Sida/SAREC Bilateral Marine Science Programme between Sweden and TanzaniaA W Mwandya, Y D Mgaya, M C Öhman, I Bryceson & M GullströmPhD thesisOur findings suggest that the densities of juvenile striped mullet vary among sites and creeks in response to refuge availability from turbid, shallow water and the accessibility of food from benthic microalgae https://doi.org/10.2989/18142321003714575
TAFIRIFisheries EcologyPhotoacclimation mechanisms of corallimorpharians on coral reefs: the Photosynthetic parameters of zooxanthellae and host cellular responses to variation in irradiance
2010
to experimentally assess the photoacclimation mechanisms of these two corallimorpharian species in response to increased PAR and UVR in terms of the photosynthetic parameters of their zooxanthellae density and the cellular responses of their tissuesIncompletedThis research was supported by funds from the Bar-Ilan University, Auburn University, City University of New York, Baruch College, the Interuniversity Institute for Marine Sciences in Eilat and Israel Science Foundation grant (# 981/05).Kuguru B., Achituv Y., Gruber D., Tchernov D. Journal Further studies will be needed to fully understand the underlying cellular mechanisms and biochemical pathways used by corallimorpharians during adjustment of their photosystems (PSI and PSII) and photoprotective pigments in response to irradiance on coral reefs https://www.researchgate.net/profile/Baraka_Kuguru/publications
TAFIRIAquatic ecosystems & BiodiversityThe Environment of Lake Victoria (East Africa): Current Status and Historical Changes (2010)
2010
To assess both the present condition of the lake water quality parameters and the changes that have taken place over the last 50 to 80 yearsCompletedEuropean Union through Lake Victoria Fisheries Organisation (LVFO).European Union through Lake Victoria Fisheries Organisation (LVFO).JournalThe water quality of the lake has improved but the concentrations of plant nutrients have not decreased; specific-areas pollution from gold mining, domestic and industrial wastes discharge was noted and thus recommended the need of establishing intensive monitoring and quantifying the extent of pollution in future to avoid further spread to the whole lake https://doi.org/10.1002/iroh.201011226
TAFIRIFish biology Some possible factors leading to decline in fish species in Lake Victoria (2010)
2010
To explore possible factors that led to the decline in fish species in LakeCompletedEuropean Union through the Implementation of Fisheries Management Plan project (IFMP)Njiru, M., Mkumbo, O.C., van der Knaap, MJournalTo further arrest the decline, there is a need to treat the lake as one ecosystem; All stakeholders (government ministries and NGOs) working in the lake basin should work collectively aiming at protecting and conserving the lake environment; proper taxonomic studies should be conducted in order for fisheries managers to have a complete inventory of the fish biodiversity in the lake. • https://doi.org/10.1080/14634980903566253
TAFIRIAquatic ecosystems & BiodiversitySpatial and temporal patterns in abundance and distribution of zooplankton in the Tanzanian waters of Lake Victoria (2010)
2010
To investigate zooplankton composition and abundance, and its spatial and temporal distribution patterns at various depths in the near shore, intermediate, and offshore waters of Lake Victoria.CompletedEuropean Union through the Implementation of Fisheries Management Plan project (IFMP)Ngupula, G.W., Waya, R.K., Ezekiel, C.NJournalThere is change of zooplankton composition and abundance with a trend towards small sized species instead of the large. Further studies on zooplankton of the whole Lake are needed to understand their contribution to the ecology and production of the lake fisheries • https://doi.org/10.1080/14634988.2010.525077
TAFIRIAquatic ecosystems & BiodiversityChallenges and opportunities for integrating lake ecosystem modelling approaches (2010)
2010
To (1) describe the potential approaches in lake ecosystem modelling; (2) show the potential for expanding and redirecting the approach taken in an existing model; and (3) highlight the challenges and opportunities for integrating lake ecosystem modelling approachesCompletedNetherlands Organization for Scientific Research (NOW) grant 047.017.012; Russian Foundation for Basic Research (RFBR); EU-REFRESH, EU-WISER, CLEAR (a Villum Kann Rasmussen Centre of Excellence Project on lake restoration) Mooij, W.M., Trolle, D., Jeppesen, E., Arhonditsis, G., Belolipetsky, P.V., Chitamwebwa, D.B.R., Degermendzhy, A.G., DeAngelis, D.L., Domis, L.N.D.S., Downing, A.S., Elliott, J.A., Fragoso, C.R., Jr., Gaedke, U., Genova, S.N., Gulati, R.D., Hakanson, L., Hamilton, D.P., Hipsey, M.R., t Hoen, J., Huelsmann, S., Los, F.H., Makler-Pick, V., Petzoldt, T., Prokopkin, I.G., Rinke, K., Schep, S.A., Tominaga, K., Van Dam, A.A., Van Nes, E.H., Wells, S.A., Janse, J.HJournalThe study encouraged the application of multiple modelling approaches concurrently, using existing models and model components as can help to develop an integrative scientific view on the functioning of lake ecosystems and to provide managers with essential ecological information for water quality management. https://doi.org/10.1007/s10452-010-9339-3
TAFIRIFish biology Genetic variation and demographic history of the Haplochromis Laparogramma group of Lake Victoria—an analysis based on SINEs and mitochondrial DNA (2010)
2010
To evaluate the effect and degree of influence of demographic events on cichlids of Lake Victoria using sympatric endemic pelagic species of the Laparogramma group (Witte and Witte-Maas, 1987)CompletedThe Ministry of Education, Culture, Sports, Science, and Technology of JapanMzighani, S.I., Nikaido, M., Takeda, M., Seehausen, O., Budeba, Y.L., Ngatunga, B.P., Katunzi, E.F., Aibara, M., Mizoiri, S., Sato, JournalStill there is a need to investigate the ancestral origins of Lake Victoria cichlids as many taxa have not yet been studied, and so, there is a possibility for new discovery. More detailed research and analysis will be necessary to reveal the origin of haplochromine cichlids of Lake Victoria. https://doi.org/10.1016/j.gene.2009.10.002
TAFIRIAquatic ecosystems & BiodiversityBenthic macrofauna community composition, abundance and distribution in the Tanzanian and Ugandan inshore and offshore waters of Lake Victoria (2010
2010
To assess the benthic macroin- vertebrate community composition, abundance patterns and distribution in the shallow nearshore, intermediate and offshore waters of Lake Victoria CompletedIFMPG. W. Ngupula and R. KayandaJournalThe presence of macrophytes and abundant detritus, a food resource for macroinvertebrates, account for their high abundance in shallow waters http://dx.doi.org/10.2989/16085914.2010.490978
TAFIRIClimate change & environmentMonthly variations in sea level at the Island of Zanzibar
2010
Oceanographic researchCompletedNot specifiedMahongo SB, Francis J JournalThere is a strong likelihood that physical processes other than meteorology and tides influenced the observed variations in sea level, especially in the 4-year cycle. Western Indian Ocean Journal of Marine Science, 9 (1): 1-14.
TAFIRIClimate change & environmentMonthly Variations in Sea Level at the Island of Zanzibar
2010
Monthly collection Meteorological data and atide gauge data at Island of Zanzibar.CompletedWIOMSASB Mahongo and Julias FrancisJournalwinds (NE and SE monsoons) and air temperature have been changing at Zanzibar steadily over the 20-year study period, probably as a consequence of the changing global climate https://www.ajol.info/index.php/wiojms/article/view/73963
TAFIRIFish biology Managing Nile perch using slot size: is it possible?
2009
This paper examines the extent to which fishermen and the processing factories adhere to the slot sizes, using information collected at landing beaches, processing factories, as well as published and unpublished literature. Factors that could have led to the decline in Nile perch in Lake Victoria are discussed and possible management strategies suggestedCompletedEuropean Union Under the Lake Victoria Fisheries Research Project, (LVFRP), World Bank under The Lake Victoria Environmental Management Project (LVEMP) Phase I & IIM. Njiru, A. Getabu, A.M. Taabu, E. Mlaponi, L. Muhoozi and O. C. Mkumbo JournalThere is an urgent need to harmonise all the regulations and penalties in the Lake Victoria fishery and treat the lake as one system in all the three Partner States. To sustain the fishery, the recommended slot sizes should be enforced, entry into the fishery should be limited through licensing, and illegal fishing gears and methods eradicated. There is a need to source money locally, perhaps from taxes levied on the fishing industry to support research and management needed to maintain the fishery resources. In such a situation, research would have to be demand-driven and aim to answer specific issues raised by stakeholders. Strengthened security by integrating communities into the management of the fishery resource through the BMUs, but their success will depend on local commitment the one hand and strong political support on the other. African Journal of Tropical Hydrobiology and Fisheries 12: 9-14, http://ajol.info/index.php/ajthf/article/view/57362
TAFIRIStock Assessment & Fisheries StatisticsStatus of the Major Commercial Fish Stocks and Proposed Species-specific Management Plans for Lake Victoria
2009
This paper summarizes knowledge about the status of the fish stocks and reviews the need for species-specific management plans for the major commercial fish species of Lake Victoria. It also outlines a recovery plan for the Nile perch fishery where fishing effort may now be almost twice the optimal level needed for a sustainable yieldCompletedHaplochromine Ecology Survey Team (HEST), European Union Under the Lake Victoria Fisheries Research Project, (LVFRP), World Bank under The Lake Victoria Environmental Management Project Phase I & IIKayanda, R., Taabu, A.M., Tumwebaze, R., Muhoozi, L., Jembe, T., Mlaponi, E., And Nzungi, P. JournalThe management of haplochromines has been hampered by a lack of taxonomic knowledge and therefore, an inability to separate the stocks. Fishing in littoral waters can affect specialised species, such as those restricted to rocky habitats, which are heavily fished for bait for long lines targeting Nile perch. There may be a need to control these activities. species-specific management options be implemented to reverse the trend in the Nile perch stocks, the most immediate management issue in the lake African Journal of Tropical Hydrobiology and Fisheries 12: 15-21. http://ajol.info/index.php/ajthf/article/view/57366
TAFIRICapture fishery Limnological variability and pelagic fish abundance (Stolothrissa tanganicae and Lates stappersii) in Lake Tanganyika.
2009
To investigate possible links between short term fluctuations of environment and abundance of the main pelagic fish (Stolothrissa tanganicae and Lates stappersii)CompletedFederal Science Policy, Belgium (BELSPO) in the framework of A STEREO/CLIMFISH projectPlisnier, P.D. JournalThe use of remote sensing images is a useful tool for the observation of planktonic blooms taking place in the lake. The findings of this work have indicated that increases in abundance of Stolothrissa tanganicae is highly related to the observed blooms https://link.springer.com/article/10.1007/s10750-009-9701-4
TAFIRIStock Assessment & Fisheries StatisticsNear-shore Demersal Fish Stock Assessment survey in Trawlable areas along the Tanzanian Coast
2008
To asses status of demersal fish stocksCompletedMACEMPDr Catherine MwakosyaTechnical ReportThe current biomass estimates show a decreasing trend on the fish resources when compared to the previously estimated values. This can be an indicator of higher exploitation rate on the fish resource. Therefore the current management measures should be continued including effort reduction in areas with low catch rates. Tanzania Fisheries Research Institute (TAFIRI)
TAFIRISocio-economics & MarketingCapability and Legitimacy of Beach Management Units (BMUs) To Improve Fishers Income Through Management of Firsthand Sales System in Lake Victoria - Tanzania
2008
The study aims at finding out the current performance of the BMUs in management of fisheries resources and what necessary conditions and resources are required for BMUs in order to undertake the additional responsibility of management of first-hand sales at Lake Victoria (Tanzanian side). In achieving the overall objectives, the thesis is focusing on answering the following research questions: What activities are currently performed by the BMUs, What are the BMUs strength and weaknesses, What can be done to improve the BMUs performance, What is the current first-hand sales system and who are the key players, What could be done by the BMUs in order to improve the first-hand sales system, What are the governments and the fish buyers opinions on the first-hand sales regulationsCompletedNorwegian Agency for Development Cooperation, NORAD Fellowship and SEMUTMwanahamisi Abdallah SaleheMSc thesisIn both phases of co-management implementation in the Lake Victoria fishery on the Tanzanian side (first the establishment of BMUs and then its reformation); the issue of problems, needs and opportunities identification in the fishing communities was ignored. The deliberate decision of not taking into account the problems of the fishing communities in the co-management arrangements has made the fishers less motivated to participate in resource management activities. First an intensive and continuous community awareness raising and sensitization on the nature and trends of the fisheries resource, and their roles and responsibility as BMU members in co-management arrangement is highly needed. Second a study should be done to analyze the costs and benefits to all stakeholders involved in the first-hand sales of the Nile perch fisheries. Thirdly a study should be done to find out whether the market-oriented fisheries co-management can act as a livelihood strategy in small-scale fisheries, especially in developing countries. Fourth an immediate government intervention and investigation is needed to find out what are the major causes for the problem of high degree of fish rejects in the processing plants. Although the problem is mostly perceived by the fishers and the middlemen as unfair business practices performed by the processing plants; the problem might also threaten the reputation of Nile perch products on local and international markets. Fifth the establishment of the board of the fish trade and fishers sales organization is vital in order to improve the contribution and performance of fisheries sector in the national economy and poverty reduction in the fishing communities. And finally apart from market empowerment of the fishing communities, other problems, needs and opportunities should be identified and consensus between the government, development partners and communities should be sought on which issues that can be incorporated in the current co-management arrangements and which cannot be incorporated. https://munin.uit.no/handle/10037/1428
FOREIGN INSTITUTIONFish biology Seagrass importance in food provisioning services: fish stomach content as a link between seagrass meadows and local fisheries.
2008
To examine stomach contents of 13 important commercial fish species in Chwaka Bay, Zanzibar.Completedsidade la Torre-Castro, M., Björk, M., Eklöf, J., & Rönnbäck, P.PhD thesisConsideration of seagrass ecosystems in a holistic perspective, the difficulties in valuation of ecosystem services and finally the crucial importance https://www.ajol.info/index.php/wiojms/article/view/48257
TAFIRIFish biology Learning ability in juvenile Atlantic cod (Gadus morhua L.) Different CS – US relationships and reward valve
2008
To determine whether cod could trade off current and future rewards with different incentive values on the basis of a learned cue signal.Completed(i) University of Bergen, Norway (ii) Norwegian Agency for Developent (NORAD)Nestory Peter GabagambiMSc thesisCod has a good learning ability and skills of identifying rewards of high and low incentive value and suggest that cod can learn to adapt and cope with different technologies in the aquaculture industry University of Bergen, Norway
FOREIGN INSTITUTIONFisheries EcologyEcophysiological adaptations of corallimorpharians to irradiance and temperature.
2008
The corallimorpharians Rhodactis rhodostoma and Discosoma unguja are nonreefbuilding invertebrates that commonly occupy shallow coral reefs in the Indo-Pacific region, and may successfully dominate some reef areas following bleaching and other disturbances that kill stony corals (Chadwick-Furman & Spiegel 2000, Muhando et al. 2002, Kuguru et al. 2004, Konstantin et al. 2007). Polyps of R. rhodostoma and D. unguja occupy contrasting habitats on coral reefs in the northern Red Sea. Individuals of R. rhodostoma form large aggregations on intertidal reef flats (Kuguru et al. 2007), while those of D. unguja occupy holes and crevices on the reef slope (Kuguru et al 2008). Differences in their physiological acclimation to photosynthetically active radiation (Royer et al. 2007), ultraviolet radiation (UV), and temperature may partly explain their distributional patterns, but they are not well understood. The objective of the study was to Characterize the microhabitats of these 2 corallimorpharians in terms of levels of irradiance, temperature, and related factors. 2. Experimentally examine the tolerance levels and photobiological reactions of the corallimorpharians to extremes of irradiance, ultraviolet and temperature. 3. Compare ecophysiological responses of corallimorpharian species to irradiance and temperature with those of selected stony corals in order to build a model that explains their patterns of distribution and abundance on Red Sea reefs. Completedthe Interuniversity Institute of Marine Science (IUI), Bar Iran University (BIU) from ISRAELBaraka Lameck KuguruPhD thesisFurther studies on other species of corallimorpharia concerning their photosythetic response to changing environmental conditions, in particular global warming, should be done. Specifically, Discosoma nummiforme should be examined because there is uncertainty regarding the ability of these species to outcompete hard corals and other cnidarians on the reef. In the present study, D. nummiforme was found to have fidelity in associating with only Symbiodinium ITS2 type D1a throughout its bathymetric distributional range. It has been shown that coral with such consistence symbioses are unlikely to respond to environmental shifts by changing to other Symbiodinium types (Thornhill et al. 2006). Such coral have physiological flexibility and exhibit great capacity to cope with natural variation of the environment (Ulstrup et al 2006b). 5.2.2 The phylogenic relationship between corals and corallimorpharians is well known, however a further study is proposed in order to better understand whether corallimorpharians lost their calcification genes or they still have them. 5.2.3 Bearing in mind the findings from the present study and the fact that the ecophysiological responses of corallimorpharians to changing environmental conditions, in particular global warming, are poorly understood, long-term plans should be set up to monitor the proliferation of the Corallimorpharia in reefs around the Gulf of Eilat.
TAFIRIStock Assessment & Fisheries StatisticsThe impact of the baited hook fishery on the recovering endemic fish species in Lake Victoria
2007
To assess the impact of the bait fishery on the native stocks and recommends management strategies and/or alternative sources of bait for Nile perch long line fisheryCompletedWorld Bank under The Lake Victoria Environmental Management Project Phase IOliver C. Mkumbo and Enock Mlaponi JournalAny viable management measure to regulate the hook and line fishery should take into account its socio-economic implications for the 25,092 fishermen fully engaged in the bait fishery. An immediate detailed investigation of the selectivity of hooks, bait type and size so that clear advice can be formulated to manage this fishery; To conduct a study of the stock—recruitment relationship to monitor the impact of the significant percentage of Nile perch above the slot size, so as to enable early warnings of any threat to recruitment overfishing; To ensure a functioning system on Monitoring, Control and Surveillance (MCS) in Lake Victoria so that illegal fishing of juveniles, including baitfish are controlled; To ensure a sustainable supply of Clarias baitfish, of which 62% of the Nile perch catch falls within the slot size, by disseminating the technology of culture/farming and artificial propagation of the Clarias species endemic to Lake Victoria Aquatic Ecosystem Health & Management 10 (4): 458-466. URL: http://dx.doi.org/10.1080/14634980701704197
TAFIRIStock Assessment & Fisheries StatisticsStandard Operating Procedures No.2.
2007
To provide information delivered from bottom trawl surveys on the status of demersal fish stocks that could be used to develop management advice for those stocks. Using a statistically robust and repeatable design, it aims to provide indicators of the state of the fish stocks and present the data in such a way that managers may easily use for management CompletedEuropean Union Under the Implementation of a Fisheries Management Plan (IFMP) and the Lake Victoria Fisheries Organisation, (LVFRP).Oliver C. Mkumbo, O,C.,Mlaponi, E., Getabu, A., Nyaundi, J., Mbambazi, D., Munyaho, A.T., Njiru, M,J., Okaronon, J.O., Zalinge, N., Agnew, D., Parkes, G., Marshall, B., Ohwayo, R.O.BookTo provide information delivered from bottom trawl surveys on the status of demersal fish stocks that could be used to develop management advice for those stocks. Using a statistically robust and repeatable design, it aims to provide indicators of the state of the fish stocks and present the data in such a way that managers may easily use for management LVFO, 2007. Standard Operating Procedures (SOPs) for Trawl Surveys on Lake Victoria, LVFO ISBN 9970-713-15-8
TAFIRIFish biology Towards sustainable exploitation of Nile perch consequential to regulated fisheries in Lake Victoria
2007
To assess the status of Nile perch using both dependent and independent data CompletedEuropean Union (EU) through Lake Victoria Fisheries Research Project (LVFRP)Mkumbo, Oliva C., Nsinda, P., Ezekiel, Charles N., Cowx, Ian G. and Aeron, Mark JournalTo reduce exploitation rate of Nile perch by 50% and increase the size at first capture http://doi.dx.org./10.1080/14634980701708057
FOREIGN INSTITUTIONClimate change & environmentEvaluation of heavy metal contamination in sediments, macro-algae and mollusc species at selected locations along the East Coast of Africa
2007
(i) To establish the so called “Baseline levels” of heavy metals in both sediments and organisms especially for locations considered to be nearpristine areas, (ii) To identify local species that can be used as suitable bio-monitors or indicators of heavy metal contamination, (iii) To study some of the factors that can influence metal concentrations in animal tissues, and (iv) To determine whether shell tissues can be used as biomonitor organs, which unlike soft tissues, are easy to handle, can be collected from already dead animals, and are not easily susceptible to contamination during handling and storage.CompletedVlamse Interuniversitaire Raad (VLIR)- Belgium.Happy Kokwenda Peter MSc thesisThe study has shown significant correlations between metal concentrations in the shells and the soft tissues. This provides the basis for using shells as adequate biomonitor tissues. For developing countries such East Africa, the use of shells will be most beneficial in the sense that shells are a lot easier to handle and store over long periods (i.e. while awaiting shipping abroad for analysis).
UDSMFish biology Spatial and temporal variation in fish community structure of a marine embayment in Zanzibar, Tanzania
2007
Determine fish community structure in a tropical marine embayment harbouring mangroves, mud/sand flats and seagrass habitatsCompleted VIDI grant from the Netherlands Organisation for Scientific Research (NWO)Lugendo, B. R., de Groene, A., Cornelissen, I., Pronker, A., Nagelkerken, I., van der Velde, G., & Mgaya, Y. D.Journaldensity of fish are determined by temperature, salinity and turbidity https://link.springer.com/article/10.1007/s10750-006-0398-3
TAFIRIFisheries EcologyAdaptation strategies of the corallimorpharian Rhodactis rhodostoma to irradiance and temperature
2007
To assess Adaptation strategies of the corallimorpharian Rhodactis rhodostoma to irradiance and temperatureCompletedThis research was supported by funds from Bar Ilan University and Auburn University to NEC.Baraka Kuguru · Gidon Winters · Sven Beer · Scott R. Santos · Nanette E. Chadwick JournalIndividuals of this corallimorpharian can survive extended bleaching and recover fully, likely by altering their mode of nutrition when aposymbiotic. Thus in comparison with some stony corals, individuals of R. rhodostoma exhibit diverse traits for survival in HL environments. These characteristics may allow members of this species to repopulate some shallow reef areas that have been denuded from stony corals following thermal stress events. https://www.researchgate.net/profile/Baraka_Kuguru/publications
FOREIGN INSTITUTIONAquacultureEconomic analysis of Nile tilapia (Oreochromis niloticus) production in Tanzania
2006
The overallCompletedAquacultureAloyce R Kaliba Kajitanus O Osewe Ephraim M Senkondo Berno V Mnembuka Kwamena K QuagrainiePhD thesisUnder improved Nile tilapia production systems, returns are high enough to https://doi.org/10.1111/j.1749-7345.2006.00059.x
FOREIGN INSTITUTIONAquatic ecosystems & BiodiversityEutrophication, Nile perch and food-web interactions in south-east Lake Victoria
2005
To investigate the bottom-up effects of eutrophication on the Nile perch and food-web dynamics in south-east Lake VictoriaCompletedWageningen UniversityIlse J.M CornelissenPhD thesisGlobal climate change will therefore be an important driver of the water quality and fish distributions of Lake Victoria https://library.wur.nl/WebQuery/wurpubs/492592
TAFIRIFisheries Information SystemsEstablishment of Information and Database
2005
To establish information and database for Lake Victoria to capture, store, and retrieve information needed for management of the lake fisheriesCompletedWorld Bank (GEF/IDA) through the Lake Victoria Environment Management Project (LVEMP)Kayanda, R., Mahongo, S., Nsinda, P., Mrosso, H., Mlaponi, E., Katunzi, E., Mairi, J.2, Maige, B. Book ChapterResearch and Management require information and database to increase capacity for capturing, storing, retrieving and publishing information on the Lake Victoria Synthesis Report on Fisheries Research and Management for Lake Victoria Environment Management Project (LVEMP)
UDSMFish biology Sea Cucumber Fishery in Tanzania: Identifying the Gaps in Resource Inventory and Management
2005
Determine factors underlying the lack of management of sea cucumber resourcesCompletedUDSMKithakeni, T. M., & Mgaya, Y. D.JournalThe appropriate actions to achieve successful management of sea cucumbers should be taken in phases. That is, to raise the fisher’s awareness, carry out resource assessment, implementation of regulations and establishment of a pilot small-scale mariculture activity of the most known species in Tanzania, Holothuria scabra http://196.44.162.10:8080/xmlui/handle/20.500.11810/2929
FOREIGN INSTITUTIONStock Assessment & Fisheries StatisticsAssessment of Tanzanian prawn fishery resource
2004
To assess the shallow water prawn species composition, abundance and distributionCompletedNORADDr Catherine MwakosyaMSc thesisThe current assessment of the Tanzania prawn stock indicated that there are several factors which influencing its stock size. Apart from fishing effort which is normally considered, there are other factors such as environmental parameter showed influence on the catches. In this study rainfall during short rains period indicated a positive influence on the stock size of the following year. Therefore, provide further grounds to explore and consider on the planning the sustainable exploitation of the resource. University of Bergen, Norway
UDSMFish biology Some aspects of the life history of Diplostomum species (Digenea: Diplostomatidae) infecting Clarias species (Clariidae) of Lake Victoria
2004
To examine the occurrence, identity and developmental cycle of brain-dwelling metacercariae of Diplostomum species (Trematoda: Digenea) infecting Clarias species of Lake VictoriaCompletedWorld Bank under LVEMP IMagreth Jackton MusibaMSc thesisFurther studies on infection of the four clariids by the parasites
FOREIGN INSTITUTIONFisheries EcologyHybridization and adaptive radiation
2004
Determine if colonizing populations results in a rapid adaptive diversification under disruptive or divergent selectionCompletedDepartment of Biological Sciences, Molecular & Evolutionary Ecology Group, University of Hull, Hull, UKOle SeehausenJournalhybridization is common when populations invade new environments and potentially elevates rates of response to selection, it predisposes colonizing populations to rapid adaptive diversification under disruptive or divergent selection https://doi.org/10.1016/j.tree.2004.01.003
TAFIRIAquatic ecosystems & BiodiversityLimnological studies of flood plain lakes Ruwe and Uba , Rufiji River in Tanzania
2003
Determine the levels and nutrients and phytoplankton Species composition in Floodplain lakes Uba and RuweCompletedAustrian Academy of Science and the Royal Netherlands Government Sihaba Ramadhan MwaitegaMSc thesisMonitoring shoud be on continuosl basis, manage the whole River basin Thesis at IHE- Delft Netherlands and UDSM MBB depterment
TAFIRIFish biology 1. The Impact of Mesh Sizes on the Status and Some Aspect of the Ecology of Rastrineobola argentea of Lake Victoria, Tanzania.
2003
To test the feasibility of cage culture in Lake Victoria and assess some associate possible environmental consequenciesCompletedLake Victoria Fisheries Research Project (LVFRP)Philemon NsindaMSc thesisGiven the absence of differences in key parameters under investigation between the fish caught with the 5 and 10 mm mesh sizes, the two meshes can be used interchangeably Msc. in Zoology (Fisheries and Aquatic Sciences) of Makerere University-Kampala
UDSMAquacultureThe effects of different diets and stocking densities on the growth performance of Tilapia Oreochromis variabilis (Boulenger 1906) under Aquaculture conditions
2002
Investigating the effects of different diets and stocking densities on the growth performance of Tilapia Oreochromis variabilis under Aquaculture conditionsCompletedLake Victoria Environmental Management Project (LVEMP)Amon Paul ShokoMSc thesisCotton seed cakes containing diet can be used as a better replacement in fishmeal in the fish feeds for feeding Tilapia, O. variabilis. However it is recommended that for better utilisation of the cotton seed cakes study should be done to investigate the optimum level of cotton seed cake protein that would yield maximum growth and production. Since the cotton seeds lacks lysine, the supplementation of this amino acids in cotton seed cake diet should be critically considered. Soyabean meal containing diet can also be used to replace fishmeal with good results. However, heat treatments for destroying the anti-nutritional factors in soyabean without impairing other nutrients like amino acids should be conducted satisfactorily.
UDSMFisheries EcologyThe distribution and abundance of Rhodactis spp. (Cnidaria: Corallimorpharia) and their competitive effects on stony corals (Cnidaria: Scleractinia) on selected reefs around Zanzibar
2002
To assess the distribution and abundance of corallimorpharians in shallow reefs of Zanzibar. To compare the competitive effect of corallimorpharians against stone coralCompletedSARECBaraka Lameck KuguruMSc thesisFurther study to understand what ecological factor contribute to the success occupation of big mats of corallimorpharians in the reefs of Zanzibar.
TAFIRIHydrobiology & Water pollutionAspects of heavy metal pollution in Mwanza Gulf of Lake Victoria, Tanzania.
2001
To assess the heavy metal concentration in fish, water and sediments in Mwanza Gulf of Lake VictoriaCompletedLVEMPMary A. KisheMSc thesisCurrently data on heavy metal accumulation and transfer within the aquatic ecosystem is limited. Inherent species differences and organisms analysed, coupled with differences in food types, habitat, and metal uptake rates may contribute to observed metal variations in the analysed tissues. Bottom dwelling organisms may provide more details on the local metal concentrations of a particular ecosystem, as sediments provide a significant secondary metal source. There is a vital need to ensure assessment of the priority contaminants in all aquatic compartments and l species
TAFIRIFish biology Assessment of Catch and Effort for Lates niloticus (L), Oreochromis niloticus (L), and Rastrineobola argentea (Pellegrin) Using Fisheries Dependent Data from Tanzania waters of Lake Victoria
2000
To Assess fish Catch and Effort invested in the fishery of L. niloticus, O. niloticus, and R. argentea CompletedEuropean Union (EU) through Lake Victoria Fisheries Research Project (LVFRP)Nsinda, P.E, H.D.J, Mrosso,. & R, Ngowo Book ChapterFish catches landed were the least in Mwanza region when compared to the fish caught in Kagera and Mara Regions because of their openness nature of these two regions. The data collected lay down the base to determine exploitation characteristics using stock assessment tools for the major commercial fish species of Lake Victoria Lake Victoria 2000 A new Beginning conference 15th-19th May 2000, Jinja Uganda pgs 104-112. ISBN 9970-713-11-1
TAFIRIFish biology Stock Assessment of Lates niloticus, Oreochromis niloticus, and Rastrineobola argentea using Fisheries Dependent Data from Tanzania waters of Lake Victoria
1999
To assess fish catches and effort used in fisheries of the main commercial fish species namely of Nile perch, Tilapia and Rastrineobola argenteaCompletedEuropean Union (EU) through Lake Victoria Fisheries Research Project (LVFRP)Nsinda, P.E, & Mrosso H.D.J. Book ChapterFish samples landed at beaches within the Mwanza Gulf had abundant fish species diversity when compared to samples landed at beaches facing the open waters FIDAWOG LVFRP/Tech No. 4/1999
TAFIRIClimate change & environmentSea surface heat exchange and bottom reflection in a tidal, shallow tropical lagoon: Chwaka bay, Zanzibar
1997
Coastal Oceanography MeteorologyCompletedSIDAShigalla B. MahongoMSc thesisThe study demonstrated the use of empirical formulas to estimate the radiative heat fluxes and ultimately compute the heat budget of a water body. The major sources of uncertainty in the estimations are on the parameterization of turbulent heat fluxes from a bulk aerodynamic method, and the estimation of bottom reflection University of Gothenburg Library