Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 31 Issue 1
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- Pages.17-25
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- 1998
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
The Study on the Fisheries Biological Feature of Hairtail, Trichiurus lepturus from the Cheju Strait
제주해협에 출현하는 갈치 (Hairtail, Trichiurus lepturus)의 어업생물학적 특성
- KIM Sang Hyun (Department of Fishery Cheju national University) ;
- LEE Young Don (Marine Research institute Cheju National University) ;
- RHO Hong Kil (Department of Fishery Cheju national University)
- Published : 1998.01.01
Abstract
A fisheries biological study on the hairtail (Trichiurus lepturus LINNAEUS), which was collected from Cheju City, Hanrim, Sungsanpo and Seogwipo in Cheju Island, was carried out from June through December In 1992. GSI of the hairtail maintained relatively high from June to September, and then it began to decrease in October and remained low until December. The maturation and spawning period was between June and October, and the major spawning occurred in August. The hairtail turned out to be a multiple spawning species which spawn two or three times In a single spawning season. During the spawning season the number of females was greater than that of males, whereas the sex ratio was almost 1 : 1 during the rest of the season. Fecundity estimated from various sizes of the hairtail ranged from 12,821 to 125,876. The bigger the snout anal length and body weight of the hairtail was, the more eggs it possessed.
1992년 6월부터 12월까지 제주도 제주시, 한림, 성산, 서귀포에서 채집된 갈치 (Hairtail, Trichiurus lepturus LINNAEUS)를 대상으로 어업생물학적인 조사를 실시하여 결과를 요약하였다. 1) 생식소 중량지수 (GSI)는 암수 다같이