Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 10 Issue 1
- /
- Pages.37-47
- /
- 1977
- /
- 0374-8111(pISSN)
- /
- 2287-8815(eISSN)
A REVIEW OF SOME ASPECTS OF THE YELLOWFIN TUNA FISHERY IN THE ATLANTIC OCEAN
대서양 황다랭이의 자원생물학적 연구
Abstract
Korea started the Atlantic tuna fishery from 1964 by means of longline, then added bait-boats in 1972. Both fisheries have given the top priority to catch yellowfin tuna(Thunnus albacares). The paper reviews available catch, effort and biological data, estimates some population parameters in order to understand the status of the Atlantic yellowfin tuna as a whole. The main findings are summarized as follows: 1. The total of 476 million hook-equivalent fishing effort was thrown to catch yellowfin tuna in 1974, among which one thired was shared by longliners. 2. The dominant age group becomes younger in both surface and longline fisheries. 3. The recent mortality coefficients were calculated as 1.5 for total mortality and 0.7 for fishing mortality. 4. The weight at recruitment was 2.7 kg in 1973 which was smaller than the regulation size(3.2kg) proposed by ICCAT. 5. The maximum sustained yield was calculated to 95-145 thousand metric tons, which was the level of recent catch. Therefore, it is apparent that the present yellowfin tuna fishery should continue to receive close attention.
대서양 황다랭이(Yellowfin tuna)어업에 대한 최근의 자료를 국제대서양 참치 보존위원회(ICCAT)로부터 수집하며, 자원생물학적으로 분석하여 얻은 결과를 요약하면 아래와 같다. 1. 대서양에서의 상업적인 황다랭이 어업은 1955년에 시작되었으며, 한국은 1964년 연승에 의해 입어하기 시작하였고, 1972년 부터는 채낚기 어선도 출어하여 참치 어업이 이원화되었으나 아직은 연승에 의해 주로 어획하고 있다. 2. 대서양의 황다랭이 전체 어획량추이로 보면 어업이 시작된 이래, 연승어업의 portion이 극히 높았으나, 1966년부터 표층어업이 앞질러 1975년의 경우에는 전체 114.0천MT 중 연승은 25.5천 MT로
Keywords