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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Size selectivity of gill net for female snow crab, Chionoecetes opilio

자망에 대한 대게 암컷의 망목 선택성

  • Park, Chang-Doo (Fisheries Resources Division, West Sea Fisheries Institute, NFRDI) ;
  • An, Heui-Chun (Fisheries Engineering Division, National Fisheries Research & Development Institute) ;
  • Cho, Sam-Kwang (Fisheries Resources Division, West Sea Fisheries Institute, NFRDI) ;
  • Bae, Bong-Seong (Fisheries Resources Division, East Sea Fisheries Institute, NFRDI) ;
  • Park, Hae-Hoon (Fisheries Resources Division, East Sea Fisheries Institute, NFRDI) ;
  • Bae, Jae-Hyun (Fisheries Engineering Division, National Fisheries Research & Development Institute) ;
  • Kim, Hyun-Young (Fisheries Resources Division, West Sea Fisheries Institute, NFRDI)
  • 박창두 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 안희춘 (국립수산과학원 수산공학과) ;
  • 조삼광 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 배봉성 (국립수산과학원 동해수산연구소 자원환경과) ;
  • 박해훈 (국립수산과학원 동해수산연구소 자원환경과) ;
  • 배재현 (국립수산과학원 수산공학과) ;
  • 김현영 (국립수산과학원 서해수산연구소 자원환경과)
  • Published : 2009.05.31
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Abstract

A series of fishing experiments was carried out in the eastern coastal waters of Korea from January, 2002 to March, 2003, using gill nets of different mesh sizes (m 180, 210, 240, 270 and 300 mm) to determine the size selectivity of gill net for female snow crab, Chionoecetes opilio. The catch of experimental gears was mostly snow crab (97%), Chionoecetes opilio. The maximum carapace length (RL) of each female snow crab caught in the fishing experiments was measured. The master selection curve was estimated by applying the extended Kitahara s method. The selection curve showed that the gill nets of larger mesh size allowed more female crabs of small carapace size to escape. The optimum values of RL/m for 1.0 of retention probability was 0.563 and RL/m was estimated to be 0.249, 0.290, 0.319, 0.344 and 0.367 when the retention probability were 0.1, 0.2, 0.3, 0.4 and 0.5, respectively.

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References

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