Fecundity Estimation of Atlantic mudskipper Periophthalmus barbarus in Ogbo-Okolo mangrove Forest of Santa Barbara River, Bayelsa State Niger Delta, Nigeria
Nathaniel, A. M.; Soberekon, I. J.; Gamage, I. E.; Eli, A. A.; Raimi, M. O.
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RationaleFecundity estimation and reproductive biology of Atlantic mudskippers (Periophthalmus barbarus) in the Niger Delta region of Nigeria needs to be studied. ObjectivesTo estimate fecundity, gonadosomatic index, and condition factor of P. barbarus and describe its reproductive biology. MethodsP. barbarus specimens were collected from Ogbo-Okolo mangrove forest in Bayelsa State, Nigeria. Length, weight, and gonad weight measurements were taken. Fecundity was estimated by the gravimetric method. Length-weight relationship, condition factor, and gonadosomatic index were calculated. Ovarian developmental stages were identified. ResultsHighest mean fecundity of 9612.7 eggs was observed in females of 10.1-12.0 cm standard length and 20.0-27.9 g weight. Length-weight relationship showed specimens were in good condition. Gonadosomatic index was higher in smaller individuals. Four ovarian developmental stages were identified. ConclusionP. barbarus exhibits high fecundity. Reproductive potential is greater in intermediate sized individuals compared to smaller or larger fish. RecommendationsSustainable management practices should be implemented to conserve P. barbarus stocks in the Niger Delta region. Further research into reproductive behavior and ecology is needed.
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