Fish Population Dynamic and Stock Assessment

7.2.1. Introduction

Fishing effort plays a major role in all fisheries management purposes. If the ‘F’ is increased concomitantly, yield will decrease. Under this circumstance, calculation of Y/R in grams per recruit will not serve the purpose. Hence, Beverton and Holt developed a model as Beverton and Holt Relative yield per recruit model (Y/R)' . This model will serve as good tool for providing information needed for management. With the help of few parameters and optimal prediction of mesh size regulations, relative yield per recruit could be calculated. Further, this model requires only length of fish rather than ages.