새우조망 어업에서 그리드와 윈도우 네트의 선택효과

서지정보

ㆍ발행기관 : 한국수산해양기술학회(구 한국어업기술학회) ㆍ수록지정보 : 수산해양기술연구 / 51권 / 3호
ㆍ저자명 : 장충식, 조윤형, 안영수

영어 초록

The study aims at a selective effect of the Grid and Window net in the shrimp beam trawl.The experimental trawling of the Proto type, Grid type and Grid and Window net type was performed in a sea area of Geo–je and Tong–yeong from Mar, 2006 to Apr, 2010. The obtained results are as follows; Catch per unit area (Number) of the Proto type net and Grid type net were 0.18/m2, 0.23/m2, respectively. The Grid type demonstrated 2.4% lower bycatch rate than the proto type (6.6% vs 4.2%, respectively). In addition, in terms of total weight, the bycatch rate of Grid type was 7.6% lower than the proto type (50.2% vs 42.6%, respectively). In the comparison of shrimp catch, the Proto type demonstrated better haul outcome (0.02 case/m2) than the Grid Window type (0.02 case/m2). The Grid Window net type demonstrated 16.4% lower bycatch rate than the Proto type (32.2% vs 48.6%, respectively). In addition, in terms of total weight, the bycatch rate of Grid Window net type was 8.3% lower than the Proto type (85.9% vs 94.2% respectively).

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