New ideas on fish population dynamics

M.K. Kutty

Abstract



The Beverton-Holt and Schaefer models represent two main approaches in studying the dynamics of an exploited fish population. Although both the models were developed in relation to temperate populations there is no reason why they cannot be applied to tropical fish populations for predicting conditions of optimum exploitation, The main problem is not their applicability but the difficulties of obtaining adequate data. Hence two important problems of studying tropical fish populations are firstly, as to how to make even approximate estimations of the main population parameters so that these equations can be fitted and, secondly, how to modify these equations so that they can be applied even with limited data. Some aspects of these two problems are discussed in the paper

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