Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Species Composition and Seasonal Variation of Fish by SCUBA Observation in the Coastal Water off Tongyeong, Korea

잠수관찰을 통한 통영 영운리 연안의 어류 종조성 및 계절변동

  • Lee, Gang-Min (Marine Bio-Education and Research Center, The Institute of Marine Industry, Gyeongsang National University) ;
  • Lee, Yong-Deuk (Marine Bio-Education and Research Center, The Institute of Marine Industry, Gyeongsang National University) ;
  • Park, Jong-Yul (Marine Bio-Education and Research Center, The Institute of Marine Industry, Gyeongsang National University) ;
  • Gwak, Woo-Seok (Marine Bio-Education and Research Center, The Institute of Marine Industry, Gyeongsang National University)
  • 이강민 (국립경상대학교 해양산업연구소, 해양생물교육연구센터) ;
  • 이용득 (국립경상대학교 해양산업연구소, 해양생물교육연구센터) ;
  • 박종율 (국립경상대학교 해양산업연구소, 해양생물교육연구센터) ;
  • 곽우석 (국립경상대학교 해양산업연구소, 해양생물교육연구센터)
  • Received : 2018.05.31
  • Accepted : 2018.06.25
  • Published : 2018.06.30
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Abstract

To observe species composition and seasonal variation of fish in the coastal area, monthly underwater visual census were conducted from October 2016 to September 2017 in Tongyeong, Korea. A total of 5,358 individuals belong to 45 species were observed during the study. Perciforme fish were the most dominant (29 species), followed by Scorpaeniformes (8 species), Tetraodontiformes (3 species). The most dominant species is Sebastes inermis (19.2%), and followed by Rudarius ercodes (18.5%). Thirty three species with the highest abundance were observed in October 2016 and only 4 species were observed in February 2017. Among three subtropical fishes, such as Chaetodontoplus septentrionalis, Labroides dimidiatus, and Ostracion cubicus, the latter 2 species were firstly observed in the southern coast of Korea. Compared with the previous studies using conventional tools such as beam trawl and seine net for fish collection, underwater visual census is much more efficient way to investigate fish diversity and assemblages in coastal waters.

이번 연구는 경남 통영시 영운리의 어류 종조성 및 계절변동에 대한 연구를 2016년 10월부터 2017년 9월까지 잠수관찰기법으로 실시하였다. 조사기간 동안 총 5목 35과 45종 5,358개체가 관찰이 되었다. 그 중 농어목(Perciformes)이 29종으로 64%, 쏨뱅이목 (Scorpaeniformes)이 8종 18%, 복어목(Tetraodontiformes) 3종 7%, 차지하였다. 우점종으로는 볼락 (Sebastes inermis)이 차지하였고 아우점종으로는 그물코쥐치 (Rudarius ercodes)였다. 관찰된 종수는 10월에 33종으로 가장 많았고 2월에 4종으로 가장 적었으며 수온이 상승하는 3월 이후에 종수가 증가하였다. 개체수는 2016년 10월에 950개체로 가장 많았으며 이 시기는 주요 출현어종 인상어(Neoditrema ransonnetii), 그물코쥐치(Rudarius ercodes), 흰줄망둑(Pterogobius zonoleucus), 볼락(Sebastes inermis)이 대부분 차지하였다. 특히 아열대어류인 청줄돔 (Chaetodontoplus septentrionalis), 청줄청소놀래기(Labroides dimidiatus), 노랑거북복(Ostracion cubicus) 세 종이 출현하였고 노랑거북복과 청줄청소놀래기는 통영에서 처음 출현하였다.

Keywords

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