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Characteristics of the Korean tuna purse seine fishery in the Western and Central Pacific Ocean

중서부태평양 한국 다랑어 선망어업의 조업 특성

  • Moon, Dae-Yeon (Distant-Water Fisheries Resources Team, National Fisheries Research and Development Institute) ;
  • Yang, Won-Seok (Distant-Water Fisheries Resources Team, National Fisheries Research and Development Institute) ;
  • Kim, Soon-Song (Distant-Water Fisheries Resources Team, National Fisheries Research and Development Institute) ;
  • Koh, Jeong-Rack (Distant-Water Fisheries Resources Team, National Fisheries Research and Development Institute) ;
  • Kim, Eun-Jung (Distant-Water Fisheries Resources Team, National Fisheries Research and Development Institute)
  • 문대연 (국립수산과학원 해외자원팀) ;
  • 양원석 (국립수산과학원 해외자원팀) ;
  • 김순송 (국립수산과학원 해외자원팀) ;
  • 고정락 (국립수산과학원 해외자원팀) ;
  • 김은정 (국립수산과학원 해외자원팀)
  • Published : 2005.11.30

Abstract

This paper summarizes characteristics of the Korean tuna purse seine fishery in the Western and Central Pacific Ocean (WCPO). Major fishing area for the Korean tuna purse seine fleet consisted of the waters of Micronesia, Papua New Guinea and Solomon Islands and adjacent high seas between $130^{\circ}E-180^{\circ}$ The center of the Korean tuna fishing ground was in the vicinity of $180^{\circ}$ during the El - $Ni{\tilde{n}}$o event but was formed in $150^{\circ}-160^{\circ}$E during the La - $Ni{\tilde{n}}o$ event. As compared with other major purse seine fleets in WCPO, the Korean fleet set more on unassociated schools of tuna, while Japan, USA and Chinese - Taipei fleets accounted for more than 50% of sets on log - associated schools. In general, CPUES for log - associated schools were higher than those for unassociated schools and catch composition showed that yellowfin ratio was higher in unassociated shools than log - associated schools. Length frequency represented higher percentage of mid - sized yellowfin than Japanese and USA fleets. Daily set numbers and CPUE were high before 7 am and remained almost constant from 7 am to 3 pm but decreased rapidly after 3 pm and 5 pm, respectively. Catch composition per set indicated that pure skipjack school was caught most frequently, followed by mixed school and pure yellowfin school as the least, but CPUE was highest for the mixed school.

Keywords

Korean tuna purse seine fishery;Log - associated school;Unassociated school;Yellowfin tuna;Skipjack tuna

References

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