Changes in population characteristics and diet of Nile tilapia Oreochromis niloticus (L.) from Nyanza Gulf of Lake Victoria, Kenya: What are the management options?

Aquatic Ecosystem Health and Management

Volumn 10, Issue 4, 2007, Pages 434-442

  Njiru, M ^a   Okeyo Owuor, J B ^a   Muchiri, M ^a   Cowx, I G ^b   Van Der Knaap, M ^c  

^a MOI UNIVERSITY   (Kenya)

^b UNIVERSITY OF HULL   (United Kingdom)

^c NONE   (Netherlands)

Author keywords

Ecosystem changes; Growth parameters; Mortality; Nile perch

Indexed keywords

ALGAE; HEXAPODA; LATES NILOTICUS; OREOCHROMIS NILOTICUS; TILAPIA;

EID: 36549077000     PISSN: 14634988     EISSN: 15394077     Source Type: Journal    
DOI: 10.1080/14634980701708099     Document Type: Article

References (21)

1. Asila, A. A., 2000. Report on the frame survey conducted in 2000 in Kenyan waters of Lake Victoria. Mimeograph.
2. Bowen, S. H., 1982. Feeding, digestion and growth of Tilapias: Some quantitative consideration. In: R. S. V. Pullin, R. H. Lowe-McConnell (Eds.), The biology and culture of tilapia, pp. 141-156. ICLARM, Manila, Philippines.
3. Cowx, I. G., van der Knaap, M., Muhoozi, L. I., Othina, A., 2003. Improving fishery catch statistics for Lake Victoria. Aquatic Ecosystem and Health Management. 6(3), 299-310.
4. Crul, R. C. M., 1995. Limnology and hydrology of Lake Victoria. UNESCO/IHP-IV Project M-5.1. UNESCO Publishing, Paris.
5. Dache, S. A. O., 1994. Observations on the fisheries, growth and mortality of Oreochromis niloticus (tilapia) in Nyanza Gulf of Lake Victoria, pp. 56-65. In: E. Okemwa., E. Wakwabi, A. Getabu (Eds.). Proceedings of the second EEC regional seminar on the recent trends of research on Lake Victoria fisheries, 1992 September 25-27. ICIPE Press, Kisumu, Kenya.
6. Ganyanilo, F. C., Sparre, P., Pauly, D., 1996. FAO-ICLARM Stock Assessment Tools (FISAT), Rome.
7. Getabu, A., 1992. Growth parameters and total mortality in Oreochromis niloticus (L) from Nyanza Gulf, Lake Victoria. Hydrobiol. 232, 91-97.
8. Getabu, A., 1994. Mortality rate, exploitation and recruitment in Oreochromis niloticus (L) in Nyanza Gulf of Lake Victoria, Kenya, pp. 43-52. In: E. Okemwa, E. Wakwabi, A. Getabu (Eds.). Proceedings of the second EEC regional seminar on the recent trends of research on Lake Victoria fisheries. ICIPE Press, Kenya.
9. Hay, M. E., Kappel, Q. E., Fenical, W., 1994. Synergisms in plant defenses against herbivorous: interactions of chemistry, calcification and plant quality. Ecology 75, 1714-1726.
10. Hyslop, E. J., 1980. Stomach content analysis - a review of method and their application. J. Fish Biol. 17, 411-429.
11. Njiru, M., Okeyo-Owour, J. B., Muchiri, M., and Cowx, I. G., 2004. Shift in feeding ecology of Nile tilapia, Oreochromis niloticus (L.) in Lake Victoria, Kenya. Afri. J. Ecol. 41, 1-8.
12. Ogutu-Ohwayo, R., 1990. The decline of the native fishes of Lakes Victoria and Kyoga (East Africa) and the impact of introduced species, especially the Nile perch, Lates niloticus and the Nile tilapia, Oreochromis niloticus. Environ. Bio. Fish. 27, 81-96.
13. Olowo, J. P., Chapman, L. J., 1999. Trophic shifts in predatory catfishes following introduction of Nile perch in Lake Victoria. Afri. J. Ecol. 37, 457-470.
14. Pauly, D., 1979. Gill size and temperature as governing factors in fish growth: a generalization of von Bertalanffy's growth formula. Ber. Inst. Meereskd. Univ. Kiel 63, 156.
15. Pauly, D., 1980. On the interrelationship between natural mortality, growth parameters, mean environmental temperature in 175 fish stock. J. Cons. Int. Explor. Mer. 39(3), 175-192.
16. Pauly, D., Munro, J. L., 1984. Once more on growth comparison in fish and invertebrates. Fishbytes 2(1), 21.
17. Pauly, D., Ingles, J., Neal, R., 1984. Application to shrimp stock of objective methods for the estimation of growth, mortality and recruitment related parameters from length frequency data (ELEFAN I and II). In: J. A. Gulland, B. J. Rothschilds (Eds.), Penaeid shrimps- their ecology and management, pp. 220-234. Fishing News Books, UK.
18. Sparre, P., Venema, S. C., 1998. Introduction to tropical fish stock assessment, Part 1. Manual, FAO Fish. Tech. Pap. 306.
19. Welcomme, R. L., 1967. Observations on the biology of introduced species of Tilapia in Lake Victoria. Rev. Zool. Bot. Afr. 76, 249-279.
20. Wanink, J. H., 1998. The pelagic Rastrineobola argentea as a crucial link in the disrupted ecosystem of Lake Victoria: Dwarfs and giants - African adventures. Ph. D. Thesis, Rijksuniversiteit, Leiden.
21. Witte, F., Densen, W. L. T. (Eds.), 1995. Fish Stocks and Fisheries of Lake Victoria. A Handbook for Field Observations. Samara Publishing, Cardigan, UK.