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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Pilot research on species composition of Korean purse seine catch at cannery

가공공장에서 수행한 한국 다랑어 선망 어획물 종조성에 대한 예비 연구

  • Lee, Sung-Il (Fisheries Resources Management Division, National Fisheries Research and Development Institute (NFRDI)) ;
  • Kim, Zang-Geun (Fisheries Resources Management Division, National Fisheries Research and Development Institute (NFRDI)) ;
  • Sohn, Haw-Sun (Cetacean Research Institute, National Fisheries Research and Development Institute (NFRDI)) ;
  • Yoo, Joon-Taek (Fisheries Resources Management Division, National Fisheries Research and Development Institute (NFRDI)) ;
  • Kim, Mi-Jung (Biotechnology Research Division, National Fisheries Research and Development Institute (NFRDI)) ;
  • Lee, Dong-Woo (Fisheries Resources Management Division, National Fisheries Research and Development Institute (NFRDI)) ;
  • Kim, Doo-Nam (Fisheries Resources Management Division, National Fisheries Research and Development Institute (NFRDI)) ;
  • Moon, Dae-Yeon (Fisheries Resources Management Division, National Fisheries Research and Development Institute (NFRDI))
  • 이성일 (국립수산과학원 자원관리과) ;
  • 김장근 (국립수산과학원 자원관리과) ;
  • 손호선 (국립수산과학원 고래연구소) ;
  • 유준택 (국립수산과학원 자원관리과) ;
  • 김미정 (국립수산과학원 생명공학과) ;
  • 이동우 (국립수산과학원 자원관리과) ;
  • 김두남 (국립수산과학원 자원관리과) ;
  • 문대연 (국립수산과학원 자원관리과)
  • Received : 2011.09.29
  • Accepted : 2011.10.21
  • Published : 2011.11.30
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Abstract

A preliminary study on species composition of a Korean purse seine catch landed at cannery was conducted in April 2011. In the cannery, all tuna catch are sliding through a sorting grid panel that filters and drops fish in the buckets by size class (above 9kg, 3.4-9kg, 1.8-3.4kg, 1.4-1.8kg and below 1.4kg). In cannery processing, species sorting was made for skipjack tuna and yellowfin tuna only from catches greater than 3.4kg during filtering but not for bigeye tuna because of difficulties in species identification between bigeye tuna and yellowfin tuna under frozen state. As no species identification was carried out for catch groups less than 3.4kg in the cannery process, this study focused on sorting out skipjack tuna and yellowfin tuna from these groups and then identifying bigeye tuna from all size groups of yellowfin tuna. Using the mixture rate of species obtained from the samples taken, species composition of the landed catch was estimated. As results, cannery research showed 95% for skipjack tuna, 3% for yellowfin tuna and 2% for bigeye tuna in species composition, while vessel logbook data represented 96%, 3% and 1% for skipjack tuna, yellowfin tuna and bigeye tuna, respectively. The proportion of bigeye tuna identified in the cannery was slightly higher than shown in logbook data by 1%.

Keywords

References

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