한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제50권6호
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  • Pages.788-798
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  • 2017
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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주파수차법을 이용한 남극크릴(Euphausia superba)의 종 식별에 관한 연구

Species Identification of Antarctic Krill Euphausia superba Using the 2-frequency Difference Method

  • 최석관 (국립수산과학원 원양자원과) ;
  • 한인우 (전남대학교 수산과학과) ;
  • 황두진 (전남대학교 수산과학과) ;
  • 김태호 (전남대학교 수산과학과) ;
  • 안두해 (국립수산과학원 원양자원과) ;
  • 이경훈 (전남대학교 수산과학과)
  • Choi, Seok-Gwan (Distant Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • HAN, Inwoo (Division of Fisheries Science, Chonnam National University) ;
  • Hwang, Doo-Jin (Division of Fisheries Science, Chonnam National University) ;
  • Kim, Tae-Ho (Division of Fisheries Science, Chonnam National University) ;
  • An, Doo-hae (Distant Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • LEE, Kyounghoon (Division of Fisheries Science, Chonnam National University)
  • 투고 : 2017.09.06
  • 심사 : 2017.10.30
  • 발행 : 2017.12.31
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초록

Antarctic krill Euphausia superba are important components of the Antarctic marine ecosystem both economically and ecologically; to manage this species effectively, their distribution and abundance must be understood. Using the Kwang Ja-Ho (3,012 tonnage), a commercial fishing vessel, we conducted acoustic surveys during April 13-24, 2016, to estimate the distribution and population size of krill around the South Shetland Islands of the Antarctic Continent, We used acoustic techniques based on the dB-difference, a method used mainly to classify of marine species. We found that Antarctic krill were present in numbers over 99% at six survey stations, with the exception of Station 3, where we only found Electrona carlsbergi. There was no difference in cell size due to frequency differences, but echo signals differed between species: 4.7-12.0 dB for Antarctic krill, and -4.1~0 dB for Electrona carlsbergi.

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참고문헌

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