Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Simulation-based Yield-per-recruit Analysis of Pacific cod Gadus macrocephalus in Southeastern Korean Coastal Waters

모의실험을 통한 동남해안 대구(Gadus macrocephalus)의 가입당 생산 분석

  • Cha, Hyung Kee (Subtropical Fisheries Research Center, Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Jung, Sukgeun (School of Marine Biomedical Sciences, Jeju National University)
  • 차형기 (국립수산과학원 아열대수산연구센터) ;
  • 정석근 (제주대학교 해양과학대학 해양의생명과학부)
  • Received : 2012.02.09
  • Accepted : 2012.10.08
  • Published : 2012.10.31
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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 ($L_c$)=30 cm in total length (TL). The maximum economic yield was estimated to be attained at $L_c$=35-45 cm TL, if F>1 $yr^{-1}$ but at $L_c$=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.

Keywords

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