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Movement range and behavior of mandarin fish (Siniperca scherzeri) and catfish (Parasilurus asotus) in Chungju Lake

충주호에서의 쏘가리와 메기의 이동범위 및 행동

  • Kang, Kyoung-Mi (BK21 Graduate School of Earth Environmental System, Pukyong National University) ;
  • Shin, Hyeon-Ok (Division of Marine Production System Management, Pukyong National University)
  • 강경미 (부경대학교 BK21 지구환경시스템사업단) ;
  • 신현옥 (부경대학교 해양생산시스템관리학부)
  • Received : 2010.02.05
  • Accepted : 2010.03.29
  • Published : 2010.05.31

Abstract

This study was conducted to collect the information on the behavioral characteristics and the habitat environment of mandarin fish (Siniperca schezeri) and catfish (Parasilurus asitus) with acoustic telemetry method in Chungju Lake, Korea. Mandarin fish tended to stay within 1km from the release points in downstream, and had a strong diurnal behavior. They approached to the lakefront at night. They also preferred to stay at deep water off the lakefront. The average swimming speed was faster at night (0.4BL/s) than during a day (0.2BL/s). They swam the shallow water area at night. Catfish frequently moved between upstream and downstream. Catfish tended to act during a day. The average swimming speed was faster during a day (0.3BL/s) than at night (0.2 BL/s). The average swimming depth was 14.3m, and they tended to float about 4m during a day.

Keywords

Acoustic telemetry;Siniperca scherzeri;Parasilurus asotus,;Diurnal behavior;Chungju Lake

Acknowledgement

Supported by : 한국연구재단

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