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

  • 제48권4호
  • /
  • Pages.479-486
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  • 2012
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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제주 연안에서 어획된 붕장어의 청각 능력

Hearing Ability of Conger eel Conger myriaster caught in the Coast of jeju Island

  • 안장영 (제주대학교 해양과환경연구소) ;
  • 박용석 (제주특별자치도 해양수산자원연구소) ;
  • 최찬문 (제주대학교 해양산업경찰학과) ;
  • 김석종 (제주대학교 해양산업경찰학과) ;
  • 이창헌 (제주대학교 해양산업경찰학과)
  • Ahn, Jang-Young (Marine and Environmental Research Institute, Jeju national university) ;
  • Park, Yong-Seok (Resources Researches Institute, Jeju Special Self-Governing Provence) ;
  • Choi, Chan-Moon (Department of Marine Industrial and Maritime Police, Jeju national university) ;
  • Kim, Seok-Jong (Department of Marine Industrial and Maritime Police, Jeju national university) ;
  • Lee, Chang-Heon (Department of Marine Industrial and Maritime Police, Jeju national university)
  • 투고 : 2012.10.02
  • 심사 : 2012.11.14
  • 발행 : 2012.11.30
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초록

In order to obtain the fundamental data about the behavior of conger by underwater audible sound, this experiment was carried out to investigate the hearing ability of Conger eel Conger myriaster which was in the coast of Jeju Island by heartbeat conditioning method using pure tones coupled with a delayed electric shock. The audible range of conger eel extended from 50Hz to 300Hz with a peak sensitivity at 80Hz including less sensitivity over 200Hz. The mean auditory thresholds of conger eel at the frequencies of 50Hz, 80Hz, 100Hz, 200Hz and 300Hz were 105dB, 92dB, 96dB, 128dB and 140dB, respectively. The positive response of conger eel was not evident after the sound projection of over 200Hz. At the results, the sensitive frequency range of conger eel is narrow in spite of swim bladder. Auditory masking was determined for Conger eel by using masking stimuli with the spectrum level range of about 60~70dB (0dB re $1{\mu}Pa/\sqrt{Hz}$). According to white noise level, the auditory thresholds increased as compared with thresholds in a quiet background noise including critical ratio at 68dB of white noise from minimum 26dB to maximum 30dB at test frequencies of 80Hz and 100Hz. The noise spectrum level at the start of masking was distributed at the range of about 68dB within 80~100Hz.

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참고문헌

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피인용 문헌

  1. Hearing Ability of Bambooleaf wrasse Pseudolabrus japonicus caught in the coast of Jeju vol.25, pp.6, 2013, https://doi.org/10.13000/JFMSE.2013.25.6.1381