한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)
- 제30권1호
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- Pages.105-113
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- 1997
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
삼중자망에 채집된 동해 흥해 연안어류의 종조성
Species Composition of Fish Collected by Trammel Net off Heunghae, Korea
- HWANG Sun-Do (West Sea Fisheries Institute of National Fisheries Development and Research Agency) ;
- PARK Young-Jo (East Sea Fisheries Institute of National Fisheries Development and Research Agency) ;
- CHOI Soo-Ha (East Sea Fisheries Institute of National Fisheries Development and Research Agency) ;
- LEE Tae Won (Department of Oceanography, Chungnam National University)
- 발행 : 1997.01.01
초록
흥해 연안에서 1989년 5월에서 1990년 10월 사이 삼중자망으로 어류를 채집하여 채집시기에 따른 종조성을 파악하고, 우점종의 체장 분석을 통하여 망목에 따른 어종별 체장 선택성을 분석하였다. 총 28종의 어류가 채집되었으며, 개체수와 생물량은 뚜렷한 계절 변화를 보이지 않았다. 겨울에서 여름 사이에는 주거종인 볼락, 노래미 및 쥐노래미가 우점하였고, 가을에는 회유종인 쥐치와 말쥐치가 우점하였으며 주거종의 수는 감소하였다. 자망 100m 당 12시간 평균 어획량은 11마리, 1,938 g이었으며, 채집된 주어종들은 3세 이상의 체장 20cm 이상의 개체가 주를 이루었다.
Seasonal variation in species composition of fish in the coastal water off Heunghae were determined using the samples collected by trammel net from Hay, 1989 to October, 1990. Of 28 species identified, three resident species such as Sebastes inermis, Mexagrammos otakii and Hexagrammos agrammus predominated in abundance except fall. In fall, temporal species such as Stephanolepis cirrhifer and Thamnaconus modestes were dominated. The number of species and abundance did not show seasonal variation. Mean catch per unit effort was 1,938 g (11 individuals) with a 100 m net during one night, Analysis of size composition of dominant species revealed that most fish collected were composed mainly of large individuals (>20cm) whose ages were older than 3 years.