Authors : E.A.A. Olojo, A.O. Dosumu and K.B. Olurin
Abstract: A series of studies were conducted on Syynodontis nigrita to investigate its suitability for recruitment into aquaculture so as to boost fish protein production for human consumption. In this study, an investigation was conducted on the fecundity and Gonadosomatic Index (GSI) of Synodontis nigrita from River Osun in Nigeria over a 13 months period. About 166 specimens with total length ranging from 9.5-23.3 mm and body weight between 9.70 and 110.86 g were examined. The size at maturity was 95 mm for male and 115 mm for female. The maximum gonadosomatic index of the female was 1.859 while the fecundity varied between 216 and 9620 eggs with a mean of 4438. Condition factor ranged between 0.0000712 and 0.00894. The ovaries showed eggs at different stages of development. This suggests that S. nigrita is a multiple spawner, spawning all year round.
E.A.A. Olojo, A.O. Dosumu and K.B. Olurin, 2012. Fecundity and Gonadosomatic Index of Synodontis ngrita from River Osun Southwest Nigeria. Journal of Fisheries International, 7: 26-29.