Aspects of reproductive biology of Hyperopisus bebe occidentalis (Gunther) in Zaria Dam, Nigeria

Studies were conducted on some aspects of the reproductive biology of Hyperopisus bebe occidentalis in Zaria dam. Fish were captured by using nets of various mesh sizes for 24 months. Sex ratio of female to male was 1:1.08. Fully matured gonads were observed from July to October (rainy season). Fish with spent gonads were found from December to February, virgin or immature gonads (stage I and II) were found in February to May, with the peak in March in female fish and January in male. The estimated fecundity ranged from 2025 to 4192 eggs per female with mean of 2822.4 ~c SD 781.43 eggs that had standard length range of 24.20cm to 35.50cm. The gonadosomatic index (GSI) ranged from 1.63% to 3.31%. There was a significant correlation (r = 0.873, p>0.05) between the weight of the fish and fecundity and insignificant correlation (r=0.497, p<0.05) between the standard length and fecundity.

Bibliographic Details

Main Authors:	Oniye, S.J., Onimisi, H.U.
Format:	conference_item biblioteca
Language:	English
Published:	Fisheries Society of Nigeria 2010
Subjects:	Fisheries, Hyperopisus bebe occidentalis, Nigeria, Zaria Dam, freshwater environment, Reproduction, Reproductive behaviour, Reproductive cycle, Fecundity, Gonadosomatic index, Sex ratio,
Online Access:	http://hdl.handle.net/1834/38180
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