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 status of jack mackerel fishery in the southeastern Pacific Ocean

남동태평양의 전갱이트롤어업 현황

  • Kim, Doo-Nam (Fisheries Resources Management Division, National Fisheries Research & Development Institute) ;
  • Lee, Dong-Woo (Fisheries Resources Management Division, National Fisheries Research & Development Institute) ;
  • Oh, Taeg-Yun (Fisheries Resources Management Division, National Fisheries Research & Development Institute) ;
  • Choi, Young-Min (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
  • 김두남 (국립수산과학원 자원관리과) ;
  • 이동우 (국립수산과학원 자원관리과) ;
  • 오택윤 (국립수산과학원 자원관리과) ;
  • 최영민 (국립수산과학원 동해수산연구소 자원환경과)
  • Received : 2010.10.15
  • Accepted : 2010.11.06
  • Published : 2010.11.30
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Abstract

To investigate the catches of jack mackerel fishery, a series of fishing experiments was conducted in the high seas of the southeastern Pacific Ocean ($30^{\circ}S-38^{\circ}S,\;82^{\circ}W-95^{\circ}W$) during the period of 9 August to 18 December, 2003 by commercial fishing vessel and research vessel. The number of 205 tows fishing was carried out in the southeastern Pacific Ocean. The total catch was 1,988 ton and CPUE was 2.4 ton/hour. CPUE showed high values in the frontal zone during the survey. Main target species caught from the experimental fishing were the jack mackerel, Trachurus murphyi (98.1%) and chub mackerel, Scomber japonicus (1.9%) as bycatch. Body length of the jack mackerel was different between female and male. The high mean catch per unit effort of jack mackerel was showed when the fishing ground of jack mackerel fishery was over the $110^{\circ}W$ in the southeastern Pacific Ocean. But the fluctuation of the catch per unit effort in the western part of fishing ground was not matched with those year. Reliable physical and oceanographical information will be useful for the efficiency of fishing activity. According to the result of monthly movement of center of fishing ground, the fishing activity of jack mackerel fishery was performed northward in the southeastern Pacific Ocean as time passes.

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References

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