%0 Journal Article
%T Some aspects of the reproductive biology of Tilapia mariae (Boulenger 1901) in a small lake in southeastern Nigeria
%A A Anene
%A PU Okorie
%J African Journal of Biotechnology
%D 2008
%I Academic Journals
%X Some aspects of the reproductive biology of Tilapia mariae of Umuoseriche man-made lake such as fecundity of female fishes was determined gravimetrically after the sex had been established. The ratio of male to female T. mariae of Umuoseriche Lake was 1:1.56. The numbers of female fishes were greater in 110 ¨C 145 mm and 185 ¨C 195 mm size groups. Males dominated the 135 ¨C 175 mm size group. Gonadosomatic index ranged between 1.4 and 3.4 with a mean of 2.25 ¡À 0.7. Mean ovarian weight was 1.7 ¡À 0.3 g and a mean fecundity of 1705 ¡À 629 eggs/ clutch.
%U http://www.ajol.info/index.php/ajb/article/view/59048