북태평양 한국 꽁치봉수망어업의 현황 분석

Abstract

This paper presents a general overview of the Korean stick-held dip net fishery fir Pacific saury operated in the North pacific Ocean since 1985. Annual catches, annual centroids distribution of fishing ground, and optimum fishing temperatures were compared between the periods before and after the new korea-Japan bilateral fishery arrangement established in 1998. Fishing usually began in May and ended by December, during which major catches were taken in the months September~November before the bilateral fishery arrangement between Korea and Japan, whereas in August~October after the arrangement. It was observed that after the arrangement the centroids of fishing ground was shifted from the usual fishing area off the east coast of Japan to the east of South Kuril Islands, 45°N and 151°E. Optimum fishing temperatures appeared to be different by month ; 12.5~14.4°C in may, 12.0~15.2°C in October, 13.1~17.6°C in July, 11.4~15.9°C in August, 12.9~16.9°C in September, 12.7~17.3°C in October, 13.1~17.6°C in November, and 15.0~19.1°C in December. A total of 13 species were caught during scientific observation periods but target species, Pacific saury, accounted for abut 99.9% of to total catch. Although there was no difference on fishing days between those vessels equipped with the sonar and those without sonar, number of set, total catch, and CPUE of those with sonar were higher than those without sonar by 13%, 26%, and 12%, respectively.