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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Distribution of Patagonian toothfish(Dissostichus eleginoides) by bottom longliner in the southeastern Atlantic Ocean

남동대서양 파타고니아이빨고기(Dissostichus eleginoides)의 분포

  • Kim, Doo-Nam (Distant-water Fisheries Resources Team, National Fisheries Research & Development Institute) ;
  • Kim, Young-Seung (Distant-water Fisheries Resources Team, National Fisheries Research & Development Institute)
  • 김두남 (국립수산과학원 해외자원과) ;
  • 김영승 (국립수산과학원 해외자원과)
  • Published : 2008.11.30
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Abstract

Patagonian toothfish(Dissostichus eleginoides) was investigated in the southeastern Atlantic Ocean during the period of 19 March to 7 July 2007 by commercial bottom longliners. The number of 116 hauls were carried out individually in this study area by two bottom longliners during 111 days. The total catches were 89,559kg(9.91kg/100hooks) and 66,758kg(7.38kg/100hooks), respectively. Most Patagonian toothfishes were caught on the $46-48^{\circ}S$, $6-11^{\circ}E$ of southeastern Atlantic Ocean. Patagonian toothfish comprised 67.01-92.49%(by weight) of the catches in the southeastern Atlantic Ocean. No Antarctic toothfish (Dissostichus mawsoni) was caught during the surveys. Patagonian toothfish was found throughout the experimental area, but the density was considerably greater in the layer of 1,300-1,900m, where 49.88% of the fishes were caught. Smaller fishes were generally distributed to the shallow waters and larger fish were more frequently caught with the depth. Mean size of Patagonian toothfish increased with depth of capture. Accordingly economically profitable fishing activities for the Patagonian toothfish fishery requires an understanding of the size distribution of the Patagonian toothfish by depth.

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References

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