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Stock assessment of the big-eye grunt (Brachydeuterus auritus, Val.) fishery in Ghanaian coastal waters

, : Stock assessment of the big-eye grunt (Brachydeuterus auritus, Val.) fishery in Ghanaian coastal waters. Fisheries Research (Amsterdam) 59(1-2): 197-207

Annual fishery catch statistics and length data series for Brachydeuterus auritus (Val.) in coastal waters off Ghana for the periods 1974-1997 and 1990-1991 were used to model the growth, mortality rates, indices of abundance and exploitation patterns. Mean population parameters were L[infinity]=23.1 cm (fork length), Lm=13.7 cm, K=0.73 yr-1, Z=2.67 yr-1, M=1.24 yr-1 and F=1.43 yr-1. Yield per recruit analysis showed that excessive fishing effort was being exerted on stocks and a very low length at first capture was observed. Corrective measures are recommended with emphasis on co-operation between fishermen and the government in the decision-making process.


DOI: 10.1016/s0165-7836(01)00404-0

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