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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Estimation of swimming angle and body impedance of sandfish (Arctoscopus japonicus)

도루묵의 체내 임피던스 및 유영자세각 평가

  • YOON, Euna (Fisheries Resource Research Center, National Institute of Fisheries Science) ;
  • HWANG, Doo-Jin (Department of Marine Production Management, Chonnam National University) ;
  • OH, Wooseok (Division of Fisheries Science, Chonnam National University) ;
  • LEE, Hyungbeen (Fisheries Resource Research Center, National Institute of Fisheries Science) ;
  • LEE, Kyounghoon (Department of Marine Production Management, Chonnam National University)
  • 윤은아 (국립수산과학원 수산자원연구센터) ;
  • 황두진 (전남대학교 해양생산관리학과) ;
  • 오우석 (전남대학교 수산과학과) ;
  • 이형빈 (국립수산과학원 수산자원연구센터) ;
  • 이경훈 (전남대학교 해양생산관리학과)
  • Received : 2022.02.07
  • Accepted : 2022.04.01
  • Published : 2022.05.31
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Abstract

Density and sound speed contrasts (g and h, respectively), and swimming angle were measured for sandfish (Arctoscopus japonicus) without swimbladder. The density contrast was measured by the volume displacement method while the sound speed contrast was measured by the acoustic measurements of travel time (time-of-flight method). The swimming angle was measured by dividing it into daytime, nighttime, daytime feeding and nighttime feeding. The g was 1.001 to 1.067 with an average (± standard deviation) of 1.032 (± 0.017), and the h was 1.007 to 1.022 with an average (± standard deviation) of 1.015 (± 0.003). The swimming angles (mean ± standard deviation) were 16.8 ± 10.3° during the daytime, 1.9 ± 12.3° during the nighttime, 30.2 ± 12.6° in the daytime feeding and 35.0 ± 13.2° in the nighttime feeding. These results will provide important parameters input to calculate theoretical scattering models for estimating the acoustic target strength of sandfish.

Keywords

Acknowledgement

이 논문은 2022년도 국립수산과학원 수산과학연구사업(R2022030) 및 2021년 해양수산부 재원으로 해양수산과학기술진흥원(AI 기반 스마트어업관리시스템 개발사업, No. 20210499)의 지원을 받아 수행된 연구입니다. 본 논문을 사려 깊게 검토하여 주신 심사위원님들과 편집위원님께 감사드립니다.

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