2014•Unpublished venueRequires access
CATCH CHARACTERISTICS OF TROPICAL TUNA CAUGHT BY KOREAN TUNA LONGLINE FISHERY IN THE ATLANTIC OCEAN
Sang Chul Yoon, Zang Geun Kim, Sung Il Lee, Heewon Park, Dong Woo Lee
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Abstract
SUMMARY The average of total catch by Korean tuna longline fishery in the Atlantic Ocean was about 3,200 mt from 1986 to 2011. Average catch proportion by species caught from 1986 to 2011 was 49.8% for bigeye tuna, 21.1% for yellowfin tuna. The average catch of bigeye tuna was about 1,800 mt and CPUE had recorded the highest at 9.1 inds./1,000 hooks in 2007. The average length distribution of bigeye tuna was 132.1cm, 132.9cm and 120.3cm in 2009, 2010 and 2011. The average catch of yellowfin tuna was about 590 mt and CPUE recorded the highest at 4.3 inds./1,000 hooks in 2000. The average length distribution of yellowfin tuna was 139.5cm, 131.1cm and 133.5cm in 2009, 2010 and 2011. The fishing ground for bigeye tuna and yellowfin tuna was mainly formed from the north of 20°N to the south of 10°S from 2007 to 2008. In this study, we would like to introduce the catch characteristics of tropical tuna caught by Korean longline fishery in Atlantic Ocean, and these results will be used as fundamental data for fisheries management and stock assessment. RESUME