Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Application of hydro-acoustic survey technique for abundance estimation of juvenile cod (Gadus macrocephalus) in Jinhae bay, Korea

한국 진해만 대구자치어 (Gadus macrocephalus) 현존량 추정을 위한 음향자원조사기법의 적용

  • Kim, Ju-Il (Southeast Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Hwang, Bo-Kyu (Dept. of Marine Science & Production, Kunsan National University) ;
  • Lee, Yoo-Won (Ship Operating Education Team, Korea Institute of Maritime and Fisheries Technology) ;
  • Lee, Kyonghoon (Fisheries System Engineering Division, NFRDI) ;
  • Shin, Hyeon-Ok (Division of Marine Production System Management, Pukyong National University) ;
  • Kim, Jung Nyun (Southeast Fisheries Research Institute, National Fisheries Research & Development Institute)
  • 김주일 (남동해수산연구소) ;
  • 황보규 (군산대학교 해양생산학과) ;
  • 이유원 (한국해양수산연수원 운항교육팀) ;
  • 이경훈 (국립수산과학원 시스템공학과) ;
  • 신현옥 (부경대학교 해양생산시스템관리학부) ;
  • 김정년 (남동해수산연구소)
  • Received : 2013.07.04
  • Accepted : 2013.08.13
  • Published : 2013.08.31
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Abstract

Hydro-acoustic surveys with scientific echo sounder were carried out to estimate the total density and distribution of the juvenile cod in Jinhae bay, Korea. The surveys were conducted 4 times from May to June using 2 frequency method (38kHz and 120kHz) and beam trawl were used to investigate the species composition. Also the catch amounts of juvenile cod were compared with the cod density estimated by the hydro-acoustic method. It was confirmed that the juvenile cod was stayed in Jinhae bay in early June and There was the relationship between catch of juvenile cod and the estimated density by hydro-acoustic survey. The number of juvenile cod was consequently about 365,000 fish (CV 12.9%) in May and 113,000 fish (CV 9.2%) in May based on the hydro-acoustic data.

Keywords

References

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