Population Dynamics and Stock Assessment of Hilsa Shad, Tenualosa ilisha in Bangladesh

Abstract

Population dynamics and stock assessment of Tenualosa ilisha in Bangladesh waters is studied using the length-frequency based analysis of FiSAT software to evaluate the growth parameters, mortality rates, exploitation rate, maximum sustainable yield (MSY) and the corresponding fishing mortality at this level. The study reveals that the fishes are harvested at a higher level than the optimum fishing mortality. This fishing pressure should be reduced to about 1.88 yr-1 from the present level of mortality, 2.49 yr-1 to obtain MSY of 1,62,396 tonnes.