모의실험을 통한 동남해안 대구G(adus macrocephalus )의 가입당 생산 분석
Simulation-based Yield-per-recruit analysis of Pacific cod Gadus macrocephalus in Southeastern Korean Coastal Waters
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초록
We derived biological reference points for Pacific cod Gadus macrocephalus in southeastern Korean waters by applying a yield-per-recruit analysis based on a daily simulation that adopted size-dependent fecundity, growth, and natural mortality functions. This showed that the yield per recruit of Pacific cod can be maximized at an instantaneous rate of fishing mortality (F)=0.37 yr-1 under the current regulations, where the minimum catch size (Lc)=30 cm in total length (TL). The maximum economic yield was estimated to be attained at Lc=35-45 cm TL, if F>1 yr-1 but at Lc=35-40 cm TL, if F<1 yr-1. Despite great uncertainty in the stock assessment, to develop fisheries management plans for the sustainable exploitation of Pacific cod in southeastern Korean waters, it is necessary to estimate F using capture-recapture or other expedient methods.
Abstract
We derived biological reference points for Pacific cod Gadus macrocephalus in southeastern Korean waters by applying a yield-per-recruit analysis based on a daily simulation that adopted size-dependent fecundity, growth, and natural mortality functions. This showed that the yield per recruit of Pacific cod can be maximized at an instantaneous rate of fishing mortality (F)=0.37 yr-1 under the current regulations, where the minimum catch size (Lc)=30 cm in total length (TL). The maximum economic yield was estimated to be attained at Lc=35-45 cm TL, if F>1 yr-1 but at Lc=35-40 cm TL, if F<1 yr-1. Despite great uncertainty in the stock assessment, to develop fisheries management plans for the sustainable exploitation of Pacific cod in southeastern Korean waters, it is necessary to estimate F using capture-recapture or other expedient methods.
참고문헌 (29)
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