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A preparatory study on fish behavioral properties in a set-net

  • KANG, Myounghee (Department of Maritime Police and Production System/Institute of Marine Industry, Gyeongsang National University) ;
  • LIU, Jenming (Department of Fishery Production and Management, National Kaohsiung University of Science and Technology) ;
  • HASSAN, Raja Bidin bin Raja (Marine Fishery Resources Development and Management Department, Southeast Asian Fisheries Development Center) ;
  • FAJARYANTI, Rina (Department of Engineering for Marine Production, Gyeongsang National University) ;
  • HWANG, Bokyu (Marine Production System Major, Kunsan National University)
  • Received : 2020.03.19
  • Accepted : 2020.04.16
  • Published : 2020.05.31

Abstract

The fish influx and behavioral properties at a set-net off Goseong, South Korea were investigated using an imaging sonar. As a result, the average influx of fish was 33.9% at day time and 66.1% at night time, respectively, which indicated that a majority of fish entered into a playground in the set-net at night. The fish behavioral properties such as target (fish) length, range, orientation and major-axis angle were examined and compared among survey dates (4, 5, and 6 June 2019) using the statistical analysis tool (analysis of variance, ANOVA). The behavioral properties presented differently sometime of survey dates. This is preparatory study to support fish behavior properties in a set-net. It is expected that more elaborated behavioral information of fishes in the set-net is beneficial for designing and deploying a set-net fishing gear as well as general fish behavior research in the future.

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