Length-Weight Relationship and Condition Factor of Clarias Gariepinus (Burchell, 1822) in Zobe Reservoir

 

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Life Sciences: an International Journal (LSIJ)

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PAPER TITLE; Length-Weight Relationship and Condition Factor of Clarias Gariepinus (Burchell, 1822) in Zobe Reservoir

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ABSTRACT;

The length-weight relationship as a vital fishery management gadget that devised to estimates mean weight at specific length in a given set in order to assess a comparative wellbeing of a fish population. In this study length-weight relationship and Fulcon’s condition factor of Clarias gariepinus in Zobe reservoir were evaluated. A total of 90 fish obtained from three landing sites were sampled monthly for 6 months. Length and weight of sampled fish were measured with standard methods. Results shown that, fish population consisted of 47 males and 43 females. The length-weight regression analysis showed that the bvalues of 2.80, 2.89 and 2.85 exhibited negative allometric growth in males, females and combined sex respectively. The significant linear relationships “r” of 0.97, 0.96 and 0.96 were recorded in both males, females and combined sex. The condition factor “K” reported is the same for the male, female and combined 1.04, 1.04 and 1.04 respectively. In this study condition factors “K” values recorded were greater than 1, showed that the male and female C. gariepinus from Zobe Reservoir were stable. The condition factors of entire sampled fish species were within the appropriate recommended range for gravid tropical freshwater fish species. The drag nets and Malian traps were used with the assistance local fisher folks captured the fish. In addition consideration should be given to the type of gears and mesh sizes used, fish life stages in the water bodies in order to avoid indiscriminate fishing. 

KEYWORDS;

Allometric growth, Condition factor, African catfish, Zobe reservoir

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