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Reproductive biology, length‐weight relationship and relative condition of Tilapia leucosticta (Trewavas) in Lake Naivasha, Kenya
Author(s) -
Siddiqui Abdul Q.
Publication year - 1977
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1977.tb05130.x
Subject(s) - fecundity , biology , tilapia , gonad , body weight , reproductive biology , zoology , fish <actinopterygii> , ecology , fishery , demography , anatomy , population , embryo , sociology , embryogenesis , endocrinology
In Lake Naivasha Tilapia leucosticta (Trewavas) spawns throughout the year. Males attain maturity at 180 mm and females at 160 mm total length. Males predominate over females in the catches (sex ratio 1‐00 : 0‐51). Fecundity ranged from 320 to 1328 eggs with an average of 751. The relationship between fecundity (F) and total length (L), body weight (W) and gonad weight (GW) is:The length‐weight regression coefficient is near to the cube. There is little seasonal fluctuation in relative condition of the fishes.