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Fisheries Science

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


Annual fishery catch statistics and length data series for Brachydeuterus auritus (Val.) in coastal waters of Ghana for the periods 1874 –  1997 were used to model the growth, mortality rates, indices of abundance and exploitation patterns. Mean population parameters were Loo = 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.

 

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Name of Author(s):
P.O. Bannerman, I.G. Cowx
Institutional Affiliation:
University of Hull; International Fisheries Institute
Type of Publication:
Journal Article
Name of Publisher or Journal:
Fisheries Research
Date of Publication:
2002
Number of Pages:
10