クロソイの聴覚閾値と臨界比

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タイトル別名
  • Auditory Threshold and Critical Ratio of Black Rockfish Sebastes schlegeli.
  • クロソイの聴覚しきい値と臨界比
  • クロソイ ノ チョウカク イキチ ト リンカイヒ

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The auditory threshold of the black rockfish Sebastes schlegeli was determined by heartbeat conditioning using six pure tone stimuli from 100Hz to 1000Hz, which was coupled with an electric shock. In order to measure the critical ratio, noise was projected to stable spectrum levels at all test frequencies of background noise. Black rockfish could hear a sound in the frequency range from 100Hz to 1000Hz, with greatest sensitivity of 90.7dB at 200Hz. The threshold at 500Hz was higher than others. Until 500Hz the critical ratio increased from 29.7dB to 59.8dB. These results show that the auditory sensitivity of the black rockfish at 500Hz is poor.

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  • 日本水産学会誌

    日本水産学会誌 62 (5), 785-790, 1996

    公益社団法人 日本水産学会

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