Growth, mortality and recruitment of Nile perch Lates niloticus (L. Centropomidae) in the Nyanza Gulf of Lake Victoria: an evaluation update

Rabour, C.O. and Gichuki, J. and Moreau, J. (2003) Growth, mortality and recruitment of Nile perch Lates niloticus (L. Centropomidae) in the Nyanza Gulf of Lake Victoria: an evaluation update. Naga, Worldfish Center Quarterly, 26(4), pp. 8-12.

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Abstract

A reassessment of the estimates of growth, mortality and recruitment patterns of Nile Perch, Lates niloticus was made based on data from commercial landings collected during the Catch Assessment Survey Programme. Two sets of length frequency data, one each from beach seining and hook and line fisheries, were analyzed. Values of L8 = 169 and 230 (cm TL) and K= 0.18 yr-1 and 0.195 yr-1 were obtained. The total mortality estimates from the catch curve analysis were Z = 0.72 yr-1 and 0.94 yr-1, respectively, with a natural mortality M of about 0.35 for a mean environmental temperature of 27oC. The highest peak for recruitment was in November, December and January with a minor one in June, indicating recruitment of two cohorts per year. These results are discussed and compared to previously available information on L. niloticus in Lake Victoria.

Item Type: Article
Title: Growth, mortality and recruitment of Nile perch Lates niloticus (L. Centropomidae) in the Nyanza Gulf of Lake Victoria: an evaluation update
Personal Creator/Author:
CreatorsEmail
Rabour, C.O.
Gichuki, J.
Moreau, J.
Journal or Publication Title: Naga, Worldfish Center Quarterly
Volume: 26
Number: 4
Page Range: pp. 8-12
Date: 2003
ISSN: 1511-8533
Issuing Agency: WorldFish Center
Uncontrolled Keywords: Growth; Mortality; Recruitment; Kenya, Victoria L., Nyanza Gulf; Lates niloticus
Subjects: Aquaculture
Item ID: 9454
Depositing User: Mr William Ko
Date Deposited: 12 Oct 2012 05:29
Last Modified: 12 Oct 2012 05:29
URI: http://aquaticcommons.org/id/eprint/9454

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