Fecundity of mosquitofish, Gambusia affinis (Baird & Girard) as a function of female size in fish from two lakes in Libya

Abstract

The relationships between length and weight of the female Gambusia affinis and location with ttie fecundity (eggs and eyed embryos) were analysed. The weight of fish was the most accurate predictor of fecundity the heavier the female, the larger was their fecundlty. The brood fish from BuDezera produce double the number of eyed embryos per 0.01 g weight increase, cornpared to brood fish from Ain Ziana. In genera!, fish from BuDezera has fecundity higher than fish of tke same weight group from Ain Ziana lake. Fisk length was also positively
correlateci with fecundity, but not as closely as weight.