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Mesh selectivity of monofilament and multifilament nylon trammel net for marbled sole(Pleuronectes yokohamae) in the western sea of Korea

서해안 문치가자미 삼중망의 망지 재료에 따른 망목선택성

  • KIM, In-Ok (Aquaculture Industry Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • PARK, Chang-Doo (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • CHO, Sam-Kwang (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • KIM, Hyun-Young (Research and Development Planning Division, National Fisheries Research & Development Institute) ;
  • CHA, Bong-Jin (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • LEE, Gun-Ho (Aquaculture Industry Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
  • 김인옥 (국립수산과학원 서해수산연구소 해역산업과) ;
  • 박창두 (국립수산과학원 시스템공학과) ;
  • 조삼광 (국립수산과학원 시스템공학과) ;
  • 김현영 (국립수산과학원 연구기획과) ;
  • 차봉진 (국립수산과학원 시스템공학과) ;
  • 이건호 (국립수산과학원 서해수산연구소 해역산업과)
  • Received : 2015.05.20
  • Accepted : 2015.08.12
  • Published : 2015.08.31

Abstract

A series of field tests to estimate the size selectivity of monofilament and multifilament gill net for marbled sole, Pleuronectes yokohamae, were carried out 12 times with five different mesh sizes (86.6, 101.0, 121.2, 137.7 and 151.5mm) in the western sea of Korea from 2007 to 2009. The master selection curve was estimated by the extended Kitahara's method. The total number of catch species was 23 and that of catch was 1,688 in the field tests. Marbled sole of total catch was 1,150 with 68.1 percent. In the monofilament trammel net, the optimum value of total length (TL) per mesh size (m) for 1.0 of retention probability was estimated 0.280 and the values of TL/m were estimated to be 0.187, 0.201, 0.210, 0.218 and 0.226 when the retention probability were 0.1, 0.2, 0.3, 0.4 and 0.5, respectively. In the multifilament trammel net, the optimum value of TL/m for 1.0 of retention probability was estimated 0.307 and the values of TL/m were estimated to be 0.195, 0.211, 0.222, 0.232 and 0.241 when the retention probability were 0.1, 0.2, 0.3, 0.4 and 0.5, respectively.

Keywords

Selectivity;Monofilament;Multifilament;Trammel net;Marbled sole

Acknowledgement

Supported by : 국립수산과학원

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