ОЦЕНКА МАКСИМАЛЬНОГО УСТОЙЧИВОГО УЛОВА МОРСКИХ ОКУНЕЙ РОДА SEBASTES С ИСПОЛЬЗОВАНИЕМ ФУНКЦИИ УЛОВА НА РЕКРУТА

Abstract

The object of the study is redfish species of the Flemish Cap Bank in NAFO Div.3M, the Northwest Atlantic statistical area. The aim this study is to determine the possible maximum sustainable yield and optimum fishing mortality value of redfish, using the catch per recruit function. Target reference points Fmax and F0,1 for redfish stock banks on Flemish Cap have been evaluated and the resilience of these reference point have been investigated depending on the variation of parameters to the catch per recruit function. It is shown that the optimal average annual catch depends on the recruitment and can be obtained when the operation of the object for the fishing mortality of 0,08 to 0,2 and constitute 10-18 thousand t depending on the amount of recruitment. In this case, this reserve will be maintained at biologically secure scope (spawning biomass will be in the range of 20-40 thousand tons).