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The estimation of the optimum mesh size selectivity of a drift net for yellow croaker (Larimichthys polyactis) using by the SELECT model

참조기 (Larimichthys polyactis) 유자망에 있어서 SELECT모델에 의한 적정 망목선택성 곡선 추정

  • 김성훈 (국립수산과학원 시스템공학과) ;
  • 박성욱 (국립수산과학원 시스템공학과) ;
  • 이경훈 (국립수산과학원 시스템공학과) ;
  • 양용수 (국립수산과학원 시스템공학과)
  • Received : 2011.10.07
  • Accepted : 2012.01.18
  • Published : 2012.02.28

Abstract

The mesh selectivity of a drift net for yellow croaker (Larimichthys polyactis) was examined in field experiments with six different net mesh size (40, 45, 50, 55, 60 and 65mm) from April to December, 2008 in the coastal areas of Jeollanam-do in Korea. The total catch of 6,748 consisted of yellow croaker (n=6,310; 89.1% of total catch), common mackerel (n=158; 5.6%) and other species (n=280; 9.6%). The selectivity curve for yellow croaker was fit by the models of selectivity curve in SELECT method. The optimal mesh size for 50% retention for minimum landing size (191mm) of yellow croaker was estimated as 49.6mm-51mm by selectivity curves. And the bi-normal model for the selectivity curve was found to fit the data best.

Keywords

Yellow croaker;Drift net;Gill net;Selectivity;SELECT

Acknowledgement

Supported by : 국립수산과학원

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