The effect of overfishing on the life-history strategies of Nile tilapia, Oreochromis niloticus (L.) in the Nyanza Gulf of Lake Victoria, Kenya

Aquatic Ecosystem Health and Management

Volumn 10, Issue 4, 2007, Pages 443-448

  Ojuok, J E ^a   Njiru, M ^b   Ntiba, M J ^c   Mavuti, K M ^c  

^a KENYA MARINE AND FISHERIES RESEARCH INSTITUTE   (Kenya)

^b MOI UNIVERSITY   (Kenya)

^c UNIVERSITY OF NAIROBI   (Kenya)

Author keywords

Maturity; Population parameters; Reproductive strategy

Indexed keywords

OREOCHROMIS NILOTICUS; TILAPIA;

EID: 36549062988     PISSN: 14634988     EISSN: 15394077     Source Type: Journal    
DOI: 10.1080/14634980701708107     Document Type: Article

References (31)

1. Balarin, J.D., 1979. Tilapia: A guide in their biology and culture in Africa. University of Stirling, Stirling.
2. Balirwa, J.S., 1998. Lake Victoria wetlands and the ecology of the Nile Tilapia, Oreochromis niloticus (L.). PhD. Thesis. University of Wageningen, the Netherlands.
3. Berg, O. K., Thronaes, E., and Bremset, G., 1998. Energetics and survival of virgin and repeat spawning trout (Salmo trutta). Canadian Journal of Fisheries and Aquatic Sciences 55, 47-53.
4. Calow, P., 1979. The cost of reproduction-a physiological approach. Biological Reviews 54, 23-40.
5. Dache, S.A.O., 1994. Observations on the fisheries, growth and mortality of Oreochromis niloticus (tilapia) in Nyanza Gulf of Lake Victoria.. In: E. Okemwa, E. Wakwabi, A. Getabu (Eds.), Recent trends of research in Lake Victoria fisheries, pp. 59-65. ICIPE Sciences press, Kenya.
6. Estes, J.A., 1979. Exploitation of Marine Mammals-r selection of K strategists? J. Fish. Res. Board Can. 36, 1009-1017.
7. Fryer, G. and Iles, T.D., 1972. The Cichlid Fishes of the Great Lakes of Africa: Their biology and evolution. Oliver and Boyd, London.
8. Getabu, A., 1992. Growth parameters and total mortality in Oreochromis niloticus (L) from Nyanza Gulf, Lake Victoria. Hydrobiologia 232, 91-97.
9. Horn, H.S., 1978. Optimal tactics of reproduction and life history. In: J. R. Krebs, N. B. Davies (Eds.), Behavioural Ecology: An Evolutionary Approach, pp. 421-429. Blackwell Scientific Publications, Oxford.
10. Jørgensen, T., 1990. Long-term changes in age at sexual maturity of northeast Arctic cod (Gadus morhua L.). J. Cons. Int. Explor. Mer. 46, 235-248.
11. Kolding, J., 1993. Population dynamics and life history styles of Nile tilapia, Oreochromis niloticus, in Ferguson's Gulf, Lake Turkana, Kenya. Environmental Biology of Fishes 37, 25-46.
12. Lungaiya, H.B.O., 1994 Some aspects of the reproductive biology of the Nile tilapia, Oreochromis niloticus (L.) in the Nyanza Gulf of Lake Victoria, Kenya. In: E. Okemwa, E. Wakwabi, A. Getabu (Eds.), Recent Trends of Research on Lake Victoria Fisheries, pp. 121-127. ICIPE Science Press, Kenya.
13. Lowe-McConnell, R.H., 1955. The fecundity of tilapia species. East Africa Agriculture Journal 11, 45-52.
14. Mkumbo, O. C. and Ligtvoet, W., 1992. Changes in the diet of Nile perch, Lates niloticus (L), in the Mwanza Gulf, Lake Victoria. Hydrobiologia 232, 79-83.
15. Nikolski, G. V., 1963. The Ecology of Fishes. Academic Press, London.
16. Njiru, M., Okeyo-Owuor, J. B, Muchiri, M., Cowx, I.G., and van der Knaap, M., 2007. Changes in population characteristics and diet of Nile tilapia Oreochromis niloticus (L.) from
17. Nyanza Gulf of Lake Victoria, Kenya: What are the Management Options? Aquat. Ecosyst. Health Mgmt. 10(4), 435-443.
18. Noakes, D.L.G. and Balon, E.K., 1982. Life histories of tilapias: an evolutionary perspective. p 61-82. In: R. S. V. Pullin, R. H. Lowe- McConnell (Eds.), The Biology and Culture of Tilapias, ICLARM Conference Proceedings 7 ICLARM, Manila, Phillipines.
19. Ntiba, M. J. and Jaccarini, V., 1990. Gonad maturation and spawning times of Siganus sutor off the Kenya Coast: evidence for definite spawning seasons in a tropical fish. Journal of Fish Biology 37, 315-325.
20. Ogutu-Ohwayo, R., 1985. The effects of predation by Nile perch, Lates niloticus (Linńe) introduced into Lake Kyoga (Uganda) in relation to the fisheries of Lake Kyoga and Lake Victoria. FAO Fisheries Report 335.
21. Ojuok, J.E., 1999. Reproductive biology of Oreochromis niloticus (L.) in Nyanza Gulf of Lake Victoria. pp. 192-198. In: I. G. Cowx and D. Tweddle (Eds.), Report on the fourth FIDAWOG workshop, 1999 August 16-20.: Kisumu. LVFRP/TECH/99/07.
22. Philippart, J.C. and Ruwet, J.C., 1982. Ecology and distribution of Tilapias. In R.V.S. Pullin, R.H. Lowe-McConnell (Eds.), The Biology and Culture of Tilapias, pp. 15-59. ICLARM Conference Proceedings 7, Manila.
23. Pianka, E. R., 1970. On 'r' and 'k' selection. American Naturalist 104, 592-597.
24. Pitt, T.K., 1975. Changes in the abundance and certain biological characters of Grand Bank American plaice, Hippoglossoides platessoides. Journal Fisheries Research Board Canada 32, 1383-1398.
25. Reznick, D., 1983. The structure of guppy life histories: the tradeoff between growth and reproduction. Ecology 64, 862-873.
26. Schaffer, W.M., 1974. Optimal reproductive effort in fluctuating environments. American Naturalist, 108, 783-790.
27. Stearns, S.C., 1977. The Evolution of life history traits:Acritique of the theory and a review of the data. Ann. Rev. Ecol. Syst. 8, 145-171.
28. Stearns, S.C., 1992. The evolution of Life Histories. Oxford University Press, Oxford.
29. Trewavas, E., 1983. The tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. Br. Mus. Nat. Hist., London.
30. Welcomme, R.L., 1967. Observations on the biology of the introduced species of Tilapia in Lake Victoria. Revue du Zoologie et de Botanique Africaine 76, 249-272.
31. Zar, J.H.,1999. Biostatistical analysis. Prentice-Hall, New Jersey, USA.