Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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A study on the mesh selectivity of hairtail (Trichiurus lepturus) caught by coastal drift gill net

연안 유자망에 의한 갈치(Trichiurus lepturus)의 망목 선택성에 관한 연구

  • KIM, Seonghun (Fisheries Resources and Environment Research Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • KIM, Pyungkwan (Fisheries Engineering Research Division, National Institute of Fisheries Science) ;
  • JEONG, Seong-Jae (Fisheries Resources and Environment Research Division, East Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • LEE, Kyounghoon (Division of Fisheries Science, Chonnam National University) ;
  • OH, Wooseok (Division of Fisheries Science, Chonnam National University)
  • 김성훈 (국립수산과학원 동해수산연구소) ;
  • 김병관 (국립수산과학원 수산공학과) ;
  • 정성재 (국립수산과학원 동해수산연구소) ;
  • 이경훈 (전남대학교 수산과학과) ;
  • 오우석 (전남대학교 수산과학과)
  • Received : 2019.09.02
  • Accepted : 2019.10.14
  • Published : 2019.11.30
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Abstract

The mesh selectivity of hairtail (Trichiurus lepturus) caught by coastal drift gill net was examined in field experiments with three different mesh sizes (45, 50 and 55 mm) from October to November, 2013 in the coastal areas of south-west of Jeju province. The mesh selectivity tests were conducted with the experimental net to be set middle part of conventional driftnets. The mesh selectivity tests were carried out the total of four times. The selectivity curve was estimated by the Kitahara's and Fujimori's method. In the results, the catch number of hairtail was 653 (125.8 kg) and occupied 34.8% in total catches weight. The optimal mesh size for 50% selection on the minimum landing size (180 mm, AL) and the first maturity size (260 mm, AL) of hairtail were estimated as 47.2 mm and 64.5 mm by master selectivity curves, respectively.

Keywords

References

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