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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Fishing performance for a gill net in accordance with changing of the net hanging ratio

자망에 있어서 망지의 성형률 변화에 따른 어획성능 특성

  • 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, Graduate school, Chonnam National University)
  • 김성훈 (국립수산과학원 동해수산연구소) ;
  • 김병관 (국립수산과학원 수산공학과) ;
  • 정성재 (국립수산과학원 동해수산연구소) ;
  • 이경훈 (전남대학교 수산과학과) ;
  • 오우석 (전남대학교 대학원 수산과학과)
  • Received : 2018.09.03
  • Accepted : 2018.10.26
  • Published : 2018.11.30
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Abstract

The objective of this study was to quantitatively evaluate the influence of the netting hanging ratio on fishing performance of gillnet. A total of six tests was carried out using three kinds of gillnets with different horizontal hanging ratios (0.3, 0.5 and 0.7) on the basis commercial gillnet of mesh size of 60 mm used in Yeosu Dolsan. As a result of the test fishing operation, catches of the net with hanging ratio 0.3 and the shortest float length was 1.34 times larger than the net with hanging ratio 0.7. The caught species in experimental testes was lager in the net with hanging ratio 0.3 than the net with hanging ratio 0.7. The catch rate per unit area (CPUE) is on the silver croaker with the largest catches in tests as follows. The net with hanging ratio 0.3 net was $89.45g/m^2$, hanging ratio 0.5 net was $41.63g/m^2$, and hanging ratio 0.7 net was $24.50g/m^2$. The net with hanging ratio 0.3 (float line length of 45 m) exhibited the largest CPUE value.

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References

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