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Title: スケトウダラの聴覚特性
Other Titles: Auditory characteristics of walleye pollock Theragra chalcogramma (Pallas)
Authors: 朴, 容石1 Browse this author
飯田, 浩二2 Browse this author →KAKEN DB
向井, 徹3 Browse this author →KAKEN DB
桜井, 泰憲4 Browse this author →KAKEN DB
Authors(alt): Park, Yong-Seok1
Iida, Kohji2
Mukai, Tohru3
Sakurai, Yasunori4
Keywords: スケトウダラ
Issue Date: 25-Mar-1995
Publisher: 日本水産学会
Journal Title: 日本水産学会誌
Journal Title(alt): Bulletin of the Japanese Society of Scientific Fisheries
Volume: 61
Issue: 2
Start Page: 159
End Page: 163
Publisher DOI: 10.2331/suisan.61.159
Abstract: The auditory threshold levels of walleye pollock Theragra chalcogramma (Pallas) were measured in order to determine the optimum conditions for marine ranching utilizing underwater sound. The auditory characteristics of walleye pollock were determined by heart beat conditioning using 8 frequencies of pure tone stimuli from 60 to 1, 000Hz coupled with an electric shock. Pure tone conditioning stimuli were presented to the fish for 5 seconds with a 0.1 second 12V DC electric shock applied 3 seconds after the start of the sound projection. The positive response to the pure tone stimulus of the conditioned fish consisted of an inhibition of one or more heartbeats. Results show that tested walleye pollock are sensitive to pure tones in the frequency range from 60 to 1kHz, with greatest sensitivity in the range from 120 to 200Hz. At the most sensitive frequencies, the mean thresholds were between 97.7 and 100.2dB (re 1μPa) under a background noise level between 55 and 75dB (re 1μPa/√Hz). Hearing ability declined gradually with increasing frequency above 400Hz. The upper limit of audible frequency is believed to be about 1kHz.
Rights: © 1995 公益社団法人日本水産学会
© 1995 The Japanese Society of Fisheries Science
Type: article
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 桜井 泰憲

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