Reproductive Biology of Striped Snakehead (Channa striata) from Natural Wetlands of Sylhet, Bangladesh

2016-08-16T19-50-11Z
Source: Annals of Veterinary and Animal Science
Ferdausi HJ, Roy NC, Ferdous MJ, Hossain MA, Hasan MM, Trina BD, Mian S, Iqbal MM, Munir MB, Hossain MM.
The current research was investigated with the aspire to ascertain the breeding season of striped snakehead Channa striata hinged on fecundity (F), gonado-somatic index (GSI), hepato somatic index (HSI) i.e. morphometric and biometric parameters and length-weight relationship. The study was steered for six months period starting from April to September 2014. Samples were scooped up from four natural wetlands viz. Bartali beel, Bhararu beel, Bajibari beel and Surma river in Sylhet, Bangladesh. The highest absolute fecundity of C. striata were documented as (22783.56±3913.10) in the months of June followed by (14262.11±571.48) in May and (11838.4±1498.18) in July whereas the lowest fecundity was as (6158.33±1262.151) in September. The length and weight of C. striata reveal a linear and positive correlation with a significantly higher value of the Pearson squares correlation coefficient (r2=0.87). The linear relationship between fecundity and body weight, fecundity and gonad weight were also found to be positively correlated with the r2 values of (0.76) and (0.875) respectively. The minimal HSI (0.67±0.17) against highest GSI (5.10±0.81) in the month of mid-April to August more exactly mid-April to July with the peak in June suggested that the spawning period of C. striata might be extended from mid-April to August, more precisely mid-April to July with the peak reproductive maturity in June at natural wetland of Sylhet, Bangladesh


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