한국어류학회지 (Korean Journal of Ichthyology)

  • 제20권4호
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  • Pages.303-312
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  • 2008
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

남해도 연안해역에서 서식하는 어류군집의 종조성 및 계절변동

Seasonal Variation in Species Composition and Abundance of Fish Assemblage in the Coastal Water off Namhae Island

  • 투고 : 2008.10.23
  • 심사 : 2008.12.26
  • 발행 : 2008.12.31
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초록

남해도 연안해역에서 이각망을 이용하여 어류군집의 계절에 따른 종조성 및 출현량 변동을 조사하였다. 조사기간 동안 총 89종이 출현하였으며, 우점종은 전어(Konosirus punctatus), 숭어(Mugil cephalus), 농어(Lateolabrax japonicus), 감성돔(Acanthopagrus schlegeli), 볼락(Sebastes inermis), 동갈민어(Nibea mitsukurii), 청어(Clupea pallassi), 덕대(Pampus echinogaster), 조피볼락(Sebastes schlegeli), 문치가자미(Limanda yokohamae)였는데, 이들 어종은 전체 개체수의 61.6%와 총 생체량의 80.3%를 차지하였다. 어류 종조성 및 출현량은 계절 변동이 뚜렷하였는데, 출현 개체수 및 생체량은 4월, 5월 및 9월에 높았으며, 1월에 가장 낮았다. 수온 및 이와 관련된 요인이 어류군집의 종조성 및 출현량 변동에 가장 큰 영향을 주는 요인이었다. 이각망은 연안해역을 이용하는 다양한 크기의 부어성 어류를 어획하는 데 유용한 어구였으며, 특히 상업성 어종의 어획에 효율적이었다.

Seasonal variation in species composition and abundance of fishes was determined using monthly samples collected by a fyke net in coastal waters off Namhae Island in 2006. The sampling gear, both-side fyke net, is a widely used commercial fishing gear in shallow waters of the region. A total of 89 fish species was collected, the dominant species were Konosirus punctatus, Mugil cephalus, Lateolabrax japonicus, Acanthopagrus schlegeli, Sebastes inermis, Nibea mitsukurii, Clupeapallasii, Pampus echinogaster, Sebastes schlegeli and Limanda yokohamae. They accounted for 61.1% of the total number of individuals and 80.3% of the biomass. The dominant species were primarily composed of small individuals or juveniles of large-sized fishes. Abundance in the number of individuals and biomass showed peaks in April, May and September, and was lowest in January. Temporal change in fish abundance was related to the temperature and related factors.

키워드

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