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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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An experimental study on the mesh size selectivity for whelk (Buccinum opisthoplectum)

세고리물레고둥(Buccinum opisthoplectum)의 망목 크기 선택성에 대한 실험적 고찰

  • KIM, Seonghun (Department of Marine Production System Management, Pukyong National University) ;
  • JUNG, Jung-Mo (Institute of Low-Carbon Marine Production Technology, Pukyong National University) ;
  • BAEK, Sena (Department of Fisheries Physics & system, Pukyong National University)
  • 김성훈 (부경대학교 해양생산시스템관리학부) ;
  • 정정모 (부경대학교 저탄소해양생산기술연구소) ;
  • 백세나 (부경대학교 수산물리학과)
  • Received : 2022.02.03
  • Accepted : 2022.02.24
  • Published : 2022.02.28
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Abstract

In this study, the selection action on the mesh in the net pot for whelk (Buccinum opisthoplectum) is experimentally considered, and the selectivity was compared by the SELECT model and the Nashimoto's method with the probability model according to the contact shape of the mesh and the whelk. The experiments of the mesh size selectivity was conducted for two mesh sizes: 70 mm (inner stretched size 65.4 mm) and 44 mm (inner stretched size 39.5 mm). Selectivity experiments were conducted three times in total for each mesh size used 264 whelks. In addition, Nashimoto's method analyzed the retention probability using probability model for whether the mesh passed or not based on the carapace width of the whelk. As a result of the selectivity analysis, the 50% selection carapace width for the mesh size of 70 mm was similar to 43.62 mm in the SELECT model and 42.64 mm in the Nashimoto's method. However, the 44 mm mesh with relatively small mesh size showed differences of 40.01 mm and 26.80 mm, respectively. As for the mesh size selectivity of whelk, it was found that the smaller the mesh size, the lower the selectivity. In addition, in the selectivity study on the mesh size of whelk, an evaluation method that closely considers the contact shape between the mesh and the target species is required.

Keywords

Acknowledgement

이 논문은 2021학년도 부경대학교의 지원을 받아 수행된 연구임(CD20210994).

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