Aquatic






        Prof. Yunus D. Mgaya
TEACHING
\r\nTeaches undergraduate in the fields of Fisheries Biology and Aquaculture and supervises
M.Sc. and Ph.D. students

Undergraduate teaching: AF 307: Aquaculture Genetics (2 units, 15 weeks, 7 students);\r\nPostgraduate teaching: BC 617: Restoration Ecology (2 units, 7 weeks, 9 students); Postgraduate supervision: 7 Ph.D.\r\ncandidates.

\r\nUndergraduate courses:
\r\nAF 315 Aquaculture Genetics and Seed Production 3 Units: Taught during 1st Semester

\r\nObjectives:
At the end of the course, the student should be able to understand genetic tools for improvement of economically important aquatic organisms and production of fish seed and larvae for aquaculture.

\r\n\r\nSynopsis:
\r\nGenetics\r\nPrinciples of quantitative genetics. Genetic basis for selection. Analytical techniques and experimental approaches for the study and utilization of quantitative genetic variation in culture species. Statistical determination of genetic and phenotypic parameters for selected traits. Design and assessment of selection and breeding programmes. Use of quantitative data for assessing genetic change. \r\n

\r\nSeed and larval Production\r\nSources of seed and larvae (wild and hatchery). Seed and larval collection from the wild. Broodstock establishment: collection, handling, genetic manipulation and quality control. Spawning methods for cultured species: natural, induced. Hatchery design and layout, operation and maintenance. Larval development and rearing. Monosex seed techniques. Transportation and stocking of seed. Live food production: microalgae, artemia, rotifers, cladocerans, copepods.

\r\n\r\nDelivery: 30 lecture hours and 45 hours of practicals.\r\n

\r\nAssessment:
Essays and tests 15%; mid-semester examination 25%; and final examination 60%.

\r\n\r\nKey Textbooks:
\r\n1. Beaumont, A.R and K. Hoare. 2002. Biotechnology and Genetics in Fisheries and Aquaculture. Fishing News Books (Blackwell Science Ltd). 304 pp.
\r\n2. Bromage, N. and R.J. Roberts. 1999. Broodstock Management and Egg and Larval Quality. Fishing News Books (Blackwell Science Ltd). 432 pp.
\r\n3. Haylor, G. and Muir, J.F. 1998. A Fish Hatchery Manual for Africa. A practical manual for producing seedstock of tilapia, carp and catfish. Pisces Press Ltd., Stirling, Scotland. 207 pp.
\r\n4. Lutz, C. Greg. 2001. Practical Genetics for Aquaculture. Fishing News Books (Blackwell Science Ltd). 256 pp.

\r\n\r\nReference Books:
\r\n1. Falconer, D.S. 1989. Introduction to Quantitative Genetics. 3rd edn. Longman Scientific & Technical, Essex. 438 pp.\r\n2. Tave, D. 1995. Selective Breeding Programmes for Medium-Sized Fish Farms. FAO Fisheries Technical Paper 352: 122 pp.
\r\n1. Saleem Mustafa. 1999. Genetics in Sustainable Fisheries Management. Fishing News Books (Blackwell Science Ltd). 240 pp.
\r\n2. Kirpichnikov, V.S. 1981. Genetic Bases of Fish Selection. Springer-Verlag,New York.
\r\n3. Cowx, I.G. 1992. Aquaculture Development in Africa. Training and Reference Manual for Aquaculture Extensionists. Commonwealth Secretariat, London. 423 pp.
\r\n4. Pillay T.V.R. 1993. Aquaculture: Principles and Practices. Fishing News Books (Blackwell Science Ltd). 600 pp.

1. SUPERVISION\r\n1.1

\r\nUNDERGRADUATE DISSERTATIONS

\r\n2 Supervised and examined:

\r\n\r\nKajia, Y.S.A.M, 1996. Studies on aspects of homing in the chiton Acanthopleura spinigera (Sow) (Mollusca:\r\nPolyplacophora). Final year (B.Sc.) Marine Biology project report. 32 pp.

\r\nMbije, N.E.J., 1996. Study on the abundance and diversity of benthic fauna at Ocean Road and Harbour seashores\r\nalong Dar es Salaam coast. Final year (B.Sc.) Marine Biology project report. 37 pp.

\r\nTeikwa, E., 1996. The distribution of marine life at Ocean Road and Oyster Bay seashores along the Dar es Salaam\r\ncoast. Final year (B.Sc.) Marine Biology project report. 40 pp.

\r\nLamtane, H.A., 1997. Some aspects of the ecology of Oyster Bay rocky cliff. Final year (B.Sc.) Marine Biology project\r\nreport. 41 pp.

\r\nLukanga, S.A., 1997. Study on the abundance and diversity of seagrass species and associated macrofauna at\r\nKunduchi and Ocean Road seashores along Dar es Salaam coast. Final year (B.Sc.) Marine Biology project report.\r\n33 pp.

\r\nMosha, E.J., 1998. The distribution of macrobenthos in the mangroves of Kunduchi Creek. Final year (B.Sc.) Marine\r\nBiology project report. 32 pp.

\r\nVatta, L.J., 1998. Food and feeding habits of Clarias mossambicus (Pisces: Clariidae) from Mindu Dam in Morogoro\r\nregion. Final year (B.Sc.) Marine Biology project report. 57 pp.

\r\nAbubakar, K.M., 1999. Comparative biodiversity between Kunduchi and Mtoni mangrove habitats with special\r\nemphasis to macrobenthos. Final year (B.Sc.) Marine Biology project report. 37 pp.

\r\n\r\nChando, C. 1999. An ecological assessment of seagrasses and associated biota off Silversands Hotel, Kunduchi, Dar\r\nes Salaam. Final year (B.Sc.) Marine Biology project report. 45 pp.

\r\nMusiba, M.J., 1999. Investigations on the diet and growth of Nile perch, Lates niloticus from Speke Gulf, Lake Victoria.\r\nFinal year (B.Sc.) Marine Biology project report. 34 pp.

\r\nSwilla, J.D., 2000. Length-weight relationship, fecundity and feeding habits of Lethrinus lentjan along the Dar es\r\nSalaam coastal waters. Final year (B.Sc.) Marine Biology project report. 41 pp.

\r\nIdeva, R.J., 2001. Aquaculture potential for tilapia farming in Kibaha District. Final year (B.Sc.) Marine Biology project\r\nreport. 49 pp.

\r\nMbonde, A., 2002. A review of the status of aquaculture development in Tanzania and experimental studies on tilapia\r\nstocking densities and an integrated system. Final year (B.Sc.) Marine Biology project report. 37 pp.

\r\nMaskini, P., 2005. Aspects of benthic ecology of the Kunduchi Beach Hotel foreshore following the building up of sand\r\nbar. Final year (B.Sc.) Aquatic Science project report. 38 pp.

\r\nLimbu, S., 2007. Effect of domestic sewage on survival and growth of the snail Terebralia palustris (Linnaeus 1758) in\r\nplanted mangroves at Kunduchi, Dar es Salaam. Final year (B.Sc.) Fisheries and Aquaculture project report. 24 pp.

\r\nMpemba, T.G., 2007. Comparative study in abundance and diversity of benthic macrofauna between Mjimwema and\r\nOcean Road beaches. Final year (B.Sc.) Aquatic Environmental Science and Conservation project report. 13 pp.

\r\nRobert, A., 2007. Comparative study on the abundance and distribution of benthic macrofauna at Ocean Road and\r\nOysterbay beaches. Final year (B.Sc.) Fisheries and Aquaculture project report. 20 pp.

\r\nJoseph, M., 2012. Distribution and abundance of benthic macrofauna at Oysterbay rocky shore. Final year (B.Sc.)\r\nAquatic Environmental Science and Conservation project report. 39 pp.

\r\n\r\nPOSTGRADUATE THESES\r\n3 Supervised and Examined:\r\nM.Sc. work

\r\n1. Mhitu, H.A., 1997. The reproductive biology of the squid, Sepioteuthis lessoniana (Lesson, 1830) in the\r\ncoastal waters of Zanzibar. M.Sc. Thesis, University of Dar es Salaam. 100 pp.

\r\n2. Mgimwa, F.A., 1998. Dynamics of dema trap finfish catches in the coastal waters of Zanzibar, Tanzania.\r\nM.Sc. Thesis, University of Dar es Salaam. 103 pp.

\r\n3. Mlay, A.P., 1999. Ecology of the intertidal zone of selected sandy/muddy shores in the Dar es Salaam area.\r\nM.Sc. Thesis, University of Dar es Salaam. 171 pp.

\r\n4. Nzali, L., 1999. Recruitment patterns of Scleractinian corals along the Tanga coastline. M.Sc. Thesis,\r\nUniversity of Dar es Salaam. 106 pp.

\r\n5. Lugendo, B.R., 2000. Distribution and ecology of intertidal seagrass communities at Ocean Road and\r\nKunduchi areas, Dar es Salaam. M.Sc. Thesis, University of Dar es Salaam. 144 pp.

\r\n6. Suleiman, M., 2000. Nutrient dynamics in the sediments and water column on sewage polluted and nonpolluted\r\ncoral reefs on selected sites on the west coast of Unguja Island. M.Sc. Thesis, University of Dar es\r\nSalaam. 72 pp.

\r\n7. Teikwa, E.D., 2002. Reproductive biology and fishery potential of penaeid prawns of Bagamoyo coastal\r\nwaters. M.Sc. Thesis, University of Dar es Salaam. 129 pp.

\r\n\r\n8. Kuguru, B.L., 2002. Distribution and abundance of the Corallimorpharia (Cnidaria: Anthozoa) on selected\r\nreefs around Zanzibar. M.Sc. Thesis, University of Dar es Salaam. 121 pp.

\r\n9. Yahya, S., 2003. Ecology and reproductive biology of Octopus cyanea in Zanzibar waters. M.Sc. Thesis,\r\nUniversity of Dar es Salaam.

\r\n10. Kimirei, I., 2005. Variability in pelagic fish catches and the physico-chemical parameters in Kigoma Bay,\r\nLake Tanganyika. M.Sc. Thesis, University of Dar es Salaam. 157 pp.

\r\n11. Frederk, G., 2005. Influence of sewage pollution at Ocean Road beach on the marine environment. M.Sc.\r\nDissertation, University of Dar es Salaam. 91 pp.

\r\n12. Chimgege, J.H.H., 2005. Influence of sewage pollution on seagrasses and seaweeds at Ocean Road beach,\r\nDar es Salaam. M.Sc. Dissertation, University of Dar es Salaam. 83 pp.

\r\n13. Elias, J., 2006. Abundance and species composition of crabs and mollusks in different mangrove stands at\r\nKunduchi, Dar es Salaam. M.Sc. Dissertation, University of Dar es Salaam. 75 pp.

\r\n14. Waya, R.K., 2008. Zooplankton dynamics in Shirati Bay, Lake Victoria with special emphasis on the\r\ncopepods. . M.Sc. Thesis, University of Dar es Salaam. 163 pp.

\r\n15. Sallema, R.E., 2008. Population distribution and differentiation of mangrove and rocky shore gastropods\r\n(Littoraria spp.) in Dar es Salaam, Mnazi Bay-Ruvuma Estuary and Inhaca Island in Mozambique. M.Sc.\r\nThesis, University of Dar es Salaam. 150 pp.

\r\n16. Mahenge, J., 2009. Growth and reproduction of palaemonid shrimp Palaemon concinnus and morphometric\r\ndifferentiation of the sesarmid crab Perisesarma guttatum selected mangroves along the coast of Tanzania.\r\nM.Sc. Thesis, University of Dar es Salaam. 131 pp.

\r\n17. Ngaiza, S.J., 2009. The impact of resurgence of haplochromine species on Rastrineobola argentea\r\npopulation in Mwanza Gulf, Lake Victoria - Tanzania. 73 pp.

\r\n\r\nPh.D. work
\r\n1. Chande, A.I., 1999. The biology and fishery potential of the crab Portunus pelagicus (Linnaeus, 1766) along\r\nthe coast of Dar es Salaam. Ph.D. Thesis, University of Dar es Salaam. 289 pp.

\r\n2. Kamukuru, A.T., 2003. Effect of fishing on growth and reproduction of the blackspot snapper, Lutjanus\r\nfulviflamma (Pisces: Lutjanidae) on reefs of Mafia Island, Tanzania. Ph.D. Thesis, University of Dar es\r\nSalaam. 274 pp.

\r\n3. Mhando, C.A., 2003. Enhanced coral larval settlement and coral transplantation as means of promoting coral\r\nreplenishment in Tanzania. Ph.D. Thesis, University of Dar es Salaam. 285 pp.

\r\n4. Mnembuka, B.V., 2003. Use of Pigeon peas (Cajanus cajan) as a protein supplement for Tilapia\r\n(Oreochromis niloticus). Ph.D. Thesis, University of Dar es Salaam. 182 pp.

\r\n5. Mwita, C.J., 2006. Studies on the determinants of the parasites’ community structure of the clariid fishes in\r\nLake Victoria. Ph.D. Thesis, University of Dar es Salaam 197 pp.

\r\n6. Lugendo, B.R., 2007. Habitat utilization by fish and the structure of a mangrove food web. Ph.D. Thesis,\r\nRadboud University, The Netherlands.

\r\n7. Wetengere, K., 2008. Economic factors critical to adoption of fish farming technology. Ph.D. Thesis, Open\r\nUniversity of Tanzania. 246 pp.

\r\n\r\n8. Lamtane, H.A., 2008. Fish stocks and comparative yields from East African self-stocked fingerponds. Ph.D.\r\nThesis, University of London (King’s College). 246 pp.

\r\n9. Mwandya, A.W, 2009. Fish community patterns in Tanzanian mangroves. Ph.D. Thesis, Stockholm\r\nUniversity, Sweden.

\r\n10. Yahya, S., 2011. Aspects of bleaching, habitat structure and management effects on coral reef fish\r\ncommunities. Ph.D. Thesis, Stockholm University, Sweden.

\r\n11. Kayanda, R., 2012. Discrimination of major fish species encountered in acoustic surveys of Lake Victoria.\r\nPh.D. Thesis, University of Dar es Salaam.

\r\n12. Kimirei, I.A., 2012. Importance of mangroves and seagrass beds as nurseries for coral reef fishes in\r\nTanzania. . Ph.D. Thesis, Radboud University, The Netherlands.

\r\n10.4 Supervision of Ongoing Postgraduate Work\r\nPh.D. work

\r\n1) Mmbaga, T.K. The ecology and management of sea cucumbers in Tanzania. Status: Finalizing writing up.

\r\n2) Igulu, M.M. Migration and habitat selection by tropical reef fishes. Status: Finalizing writing up. (Radboud\r\nUniversity, Nijmegen, The Netherlands)

\r\n3) Shoko, A.P. Aquaculture of Nile tilapia (Oreochromis niloticus Linnaeus, 1758) with an assessment of its\r\neconomic benefits in the Lake Victoria basin, Tanzania. Status: Submitted for external examination.

\r\n4) Mwakosya, C.A. The abundance, distribution and reproductive biology of the selected penaeid prawns in\r\nTanzanian waters. Status: Data collection in progress.

\r\n5) Grayson. J.M. Genetic structure and inferred migration of Euthynnus affinis and scomberomorus commerson\r\noff the coastal waters of Tanzania. Status: Data collection in progress.

\r\n\r\n5 Examined as External Examiner\r\nM.Sc. work

\r\nP.E. Nsinda, 2002. The impact of net sizes on the status of Dagaa (Rastrineobola argentea) stocks from Tanzania\r\nwaters of Lake Victoria. M.Sc. Dissertation, Makerere University, Kampala, Uganda.

\r\nR. Rugadya, 2003. The impact of mirror carp (Cyprinus carpio L. on aquatic environment. M.Sc. Dissertation, Makerere\r\nUniversity, Kampala, Uganda.

\r\nE. Rukuunya, 2003. The effect of sunken water hyacinth biomass on dissolved oxygen and food of major inshore\r\nspecies in northern Lake Victoria, Uganda. M.Sc. Dissertation, Makerere University, Kampala, Uganda.

\r\nR. Mugo, 2003. A comparative study on the growth and economic performance of Nile tilapia (Oreochromis niloticus)\r\nfed on maize bran, wheat bran, and rice bran in fertilized ponds. M.Sc. Dissertation, Moi University, Eldoret, Kenya.

\r\nM.O. Mohammed, 2003. Fish catch composition and biology of Siganus sutor in the Malindi/Kilifi inshore waters. M.Sc.\r\nDissertation, Moi University, Eldoret, Kenya.

\r\nA.M. Taabu, 2004. Variation in catch composition of Rastrineobola argentea Pellegrin (“mukene”) fishery in relation to\r\ndistance from shore on Lake Victoria (Uganda). M.Sc. Dissertation, Makerere University, Kampala, Uganda.

\r\nS.K. Macharia, 2004. Comparative study of hatching rates of African catfish (Clarias gariepinus Burchell 1822) eggs on\r\ndifferent substrates and the survival of hatchlings to fingerlings fed on three feed types. M.Sc. Thesis, Moi University,\r\nEldoret, Kenya.

\r\n\r\nF.M. Mwonjoria, 2006. Fish and benthic communities as indicators of mangrove ecosystem recovery in Gazi Bay –\r\nKenya. M.Sc. Thesis, University of Nairobi, Nairobi, Kenya.

\r\nO.P. Odhiambo, 2006. Population aspects of sea cucumbers (Echinodermata: Holothuroidea) in protected and\r\nunprotected reefs along the southern Kenya coast. M.Sc. Thesis, University of Nairobi, Nairobi, Kenya.

\r\nR. Nalukwago, 2009. The fish species composition and population characteristics of Oreochromis niloticus in Lake\r\nKijanebalola. M.Sc. Dissertation, Makerere University, Kampala, Uganda.

\r\nPh.D. work
\r\nM. Njiru, 2002. Feeding ecology and population characteristics of Nile tilapia, Oreochromis niloticus (L.) in Lake\r\nVictoria, Kenya. D.Phil. Thesis, Moi University, Eldoret, Kenya.

\r\nP.O. Raburu, 2003. Water quality and the status of aquatic macro-invertebrates and ichthyofauna in River Nyando,\r\nKenya. D.Phil. Thesis, Moi University, Eldoret, Kenya.

\r\nJ.O. Okaronon, 2003. Studies into the distribution and abundance of Lates niloticus (L.) and Oreochromis niloticus (L.)\r\nin Lake Victoria. Ph.D. Dissertation, Makerere University, Kampala, Uganda.

\r\nD. Mbabazi, 2005. Trophic characterization of the dominant fishes in the Victoria and Kyoga basins. Ph.D. Dissertation,\r\nMakerere University, Kampala, Uganda.

\r\nE.N. Kimani, 2005. The populations, reproduction, settlement and growth patterns of pearl oysters in Kenya. Ph.D.\r\nThesis, University of Nairobi, Nairobi, Kenya.

\r\nD.O. Sigana, 2009. The distribution and biology of Mugilidae from Kilifi, a tropical mangrove creek on the Kenya coast.\r\nPh.D. Thesis, University of Nairobi, Nairobi, Kenya.

\r\nM.A. Kyalo, 2009. Response of benthic fauna to mangrove degradation and restoration in Gazi Bay – Kenya. Ph.D.\r\nThesis, University of Nairobi, Nairobi, Kenya.

\r\nA.G. Kateka, 2010. Co-management challenges in the Lake Victoria fisheries: A context approach. Ph.D. Dissertation,\r\nSodertons University/Stockholm University, Sweden. (I participated as an Opponent during the defence held on 11th\r\nFebruary 2010).

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