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- W2080328307 abstract "Estimates of growth and mortality of the catfish, Hemisynodontis membranaceus (Geoffroy St. Hilaire), in Lake Volta were obtained from length composition data compiled in 1995 and 1996. The von Bertalanffy growth function (VBGF) estimates were: L ∞ =44.5 cm standard length; K= 0.62 year −1 ; and t 0 =−0.23 years. Natural mortality rate, M , was 1.20 year −1 . Total mortality rate, Z , was computed as 4.39 year −1 and the exploitation ratio ( E = F / Z ) was 0.72. Although the fish is estimated to have longevity of about 5 years, those exploited are normally less than 2 years of age, which is indicative of growth over‐fishing. In order to arrest over‐exploitation of the species, there is a need to establish ‘lake reserves’. In addition, the fisheries management should be devolved from the state to the local level to compel fishermen to take greater responsibility for the sustainability and conservation of the fisheries." @default.
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- W2080328307 date "2001-02-01" @default.
- W2080328307 modified "2023-10-16" @default.
- W2080328307 title "Growth and mortality of the catfish, <i>Hemisynodontis membranaceus</i> (Geoffroy St. Hilaire), in the northern arm of Lake Volta, Ghana" @default.
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- W2080328307 doi "https://doi.org/10.1046/j.1365-2400.2001.00214.x" @default.
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