Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Distribution and Biomass Using Acoustic Method of the Squid Watasenia scintillans Near Dok-do, East Sea of Korea

음향 기법을 이용한 동계 독도 주변해역 매오징어(Watasenia scintillans) 및 기타어군의 분포 및 현존량 산정

  • Lee, Hyungbeen (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Yoon, Sang Chul (Dokdo Fisheries Research Center, National Institute of Fisheries Science) ;
  • Lim, Yang Jae (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Kim, Jung Nyun (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Kim, Maeng Jin (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Choi, Kwang Ho (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
  • 이형빈 (국립수산과학원 서해수산연구소) ;
  • 윤상철 (국립수산과학원 독도연구센터) ;
  • 임양재 (국립수산과학원 수산자원조사센터) ;
  • 김정년 (국립수산과학원 수산자원조사센터) ;
  • 김맹진 (국립수산과학원 서해수산연구소) ;
  • 최광호 (국립수산과학원 서해수산연구소)
  • Received : 2017.05.29
  • Accepted : 2017.07.31
  • Published : 2017.08.31
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Abstract

The spatial distribution and abundance of fish species was estimate near Dok-do, East Sea of Korea by conducting midwater trawl survey with hydroacoustic method. Acoustic and midwater trawl data were collected onboard the R/V Tamgu 21 during 7-8 March 2016. Acoustic data were collected at the frequencies of 38 and 120 kHz and converted to nautical area scattering strength ($m^2/nmile^2$). Species are distributed mainly over an extent of 30-55 m, generally around southwest of Dok-do; the squid Watasenia scintillans was the dominant species found. The length-weight function and target strength of squid and other fishes were used to estimate the W. scintillans stock at 2499.1 tons and other fish at 43.8 tons during the winter season. The hydroacoustic method offers an approach for the determination of the biomass and vertical and spatial distributions of species aggregating near Dok-do, East Sea of Korea.

Keywords

References

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