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Evaluation of Gut Contents of Selected Fish Species in Oluwa River, Igbokoda Delta Region, Ondo State, Nigeria

DOI : https://doi.org/10.36349/easjals.2022.v05i11.001

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Gut contents of Sardinella maderensis, Schilbe uranoscopus, Mugil cephalus Oreochromis niloticus, Hepsetus odoe from Oluwa Rver in Igbokoda Ondo State were evaluate. Length-weight relationship and condition factor, (K) of the fish species were determined to evaluate the significant correlation between body weight and length in the fish species. Percentile evaluation was used to determine the gut contents to reveal the food availability (species compositions) of the environment, and consideration for nutrition management. The results showed condition factor status was below value that indicates fish in good well-being (K = 1) in all the fish samples except in Oreochromis niloticus, and these shows that these species were not in favorable environmental condition. Diatoms, small fishes, Dinoflagellate, Insect, crustaceans and other food constituted occurring in the fish with 100% full gut. Negative correlation was revealed among the fish species, which indicated no correlation in the growth length of the fish to the weight gained in Oluwa River Igbokoda. Therefore, anthropogenic influence could be a causative factor to the fish species low condition status in the environment.

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