Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Estimation of the Ratio of Fin Weight to Body Weight of Sharks for the Korean Tuna Longline Fishery in the Eastern Pacific Ocean

동부태평양 한국의 다랑어 연승어업에서 상어류 체중대비 지느러미 중량 비율 추정

  • An, Doo-Hae (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute) ;
  • Kwon, You-Jung (Department of Fisheries Physics, Graduate School, Pukyong National University) ;
  • Moon, Dae-Yeon (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute) ;
  • Hwang, Seon-Jae (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute) ;
  • Kim, Soon-Song (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute)
  • 안두해 (국립수산과학원 해외자원과) ;
  • 권유정 (부경대학교 대학원 수산물리학과) ;
  • 문대연 (국립수산과학원 해외자원과) ;
  • 황선재 (국립수산과학원 해외자원과) ;
  • 김순송 (국립수산과학원 해외자원과)
  • Received : 2009.02.11
  • Accepted : 2009.04.09
  • Published : 2009.04.30
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Abstract

The National Fisheries Research and Development Institute (NFRDI) conducted a circle hook experiment to compare the catch rates of target and bycatch species between J hook and circle hooks in the tuna longline fishery of the Eastern Pacific Ocean, which is located between $9^{\circ}13'S-1^{\circ}36'N$ and $126^{\circ}00'-138^{\circ}21'W$. Sampling was conducted from September 20 to October 23, in 2006. In this survey, we collected shark data to obtain the ratio of fin weight to body weight of sharks. Overall, 413 sharks belonging to 9 species were caught on 62,464 hooks. The total weight of the sharks caught was 11,093 kg. The ratio of wet fin weight to body round weight of sharks by species ranged from 3.7% to 7.7%, while the mean was 5.4%. The total ratio of wet fin weight to the dry fin weight of sharks ranged 0.38 to 0.70 and the mean value was 0.53. The ratio of dry fin weight to the body round weight of the sharks was estimated to be 2.86%.

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References

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