Aspects of reproductive biology of Hyperopisus bebe occidentalis (Gunther) in Zaria Dam, Nigeria
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Date
2010
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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.Page Range
253- 257Publisher or University
Fisheries Society of NigeriaConference Name
25th Annual Conference of the Fisheries Society of Nigeria (FISON)Conference Location
Lagos, NigeriaConference Date
25-29 Oct 2010Collections