한국해양학회지:바다 (The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY)
- 제2권1호
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- Pages.21-30
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- 1997
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- 1226-2978(pISSN)
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- 2671-8820(eISSN)
가리맛조개(Sinonovacula constricta: Bivalvia)의 성장과 생산 (경기 남양만 화성조간대)
Growth and Production of Sinonovacula constricta (Bivalvia) from the Hwaseong Tidal Flat in the Namyang Bay, Korea
- Koh, Chul-Hwan (Department of Oceanography, Seoul National University) ;
- Yang, Mee-Ra (Department of Oceanography, Seoul National University) ;
- Chang, Won-Keun (Department of Oceanography, Seoul National University)
- 발행 : 1997.03.30
초록
본 연구는 한국 조간대의 주요 수산자원인 가리맛조개(Sinonovacula constricta)의 서식밀도, 성장 및 생산량을 알아보기 위해서 수행되었다. 가리맛조개를 포함하는 맛류(razor clam 또는 jack knife clam)의 어획량은 연간 약 6,000여톤으로, 이들은 굴, 바지락, 동죽 다음으로 많이 어획된다. 1992년 5월부터 1993년 8월까지 약 1개월의 간격으로 총 14회에 걸쳐 맛류 생산의 50% 이상을 차지하는 가리맛조개를 경기도 화성 조간대에서 채집하였다. 가리맛조개의 서식밀도는 1
The present study reports the density, growth and production of a razor clam, Sinollovacula constricta, which is known to be one of the important fishreies catches from the Korean tidal flat. The annual yield reached to about 6,000 metric tons per year till 1994. The study was conducted on the Hwaseong tidal flat located on the central west coast, 40 kilometers south-west from Seoul. The annual yield of the razor clam in this area reached to about 50% of the total catch from the whole Korean coast. Samples were colleted monthly at 14 occasions from May 1992 to August 1993. Density of S. constricta ranged from 92~165 individuals per square meter during the study period. General trend of decreasing density was observed when the animal became older, but an exception was the year class of 1991 whose density was lower than that of 1990. The size of the shell was clearly separated into two classes during fall and winter (from September to February), however, the maximum frequency of the length of small size classes moved to right after February. It indicates a fast growth of young clams from spring to summer. Fast growth of the shell could also be examined by the growth curve. The shell growth of the whole life span was described by the von Bertalanffy equation of
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