Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Mesh Selectivity of Drift Gill Net for Yellow Croaker, Larimichthys polyactis, in the Coastal Sea of Gageo-do

가거도 인근해역 참조기(Larimichthys polyactis) 유자망의 망목선택성

  • 김성훈 (국립수산과학원 수산공학과) ;
  • 박성욱 (국립수산과학원 수산공학과) ;
  • 배재현 (국립수산과학원 수산공학과) ;
  • 김영혜 (국립수산과학원 연구기획과)
  • Published : 2009.10.31
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Abstract

The mesh selectivity of drift gill net for yellow croaker (Larimichthys polyactis) was examined in field experiments with six different net mesh size (40, 45, 50, 55, 60 and 65 mm) from April to December, 2008 in the northwestern coastal waters of Gageo-do, Korea. The total catch of 8,091 consisted of yellow croaker (n=7,574; 89.5% of total catch), common mackerel (n=162; 4.8%) and other species (n=355; 5.8%). The selectivity curve for the small size yellow croaker was fit by Kitahara's method to the polynomial equation S(R)=exp{($-0.552R^3$+$4.927R^2$-11.591R+9.320)-6.717}. The optimal mesh size for 50% retention for minimum landing size(191mm) of yellow croaker was estimated as 51.1 mm. This is very similar to the current drift net mesh size used in Gageo-do.

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References

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