Directional sensitivity of the Japanese scallop Mizuhopecten yessoensis and Swift scallop Chlamys swifti to water-borne vibrations

Directional sensitivity of the Japanese scallop Mizuhopecten yessoensis and Swift scallop Chlamys... Behavioral experiments were conducted on two bivalve species—the Japanese scallop Mizuhopecten yessoensis and the Swift scallop Chlamys swifti—to elucidate the role of their abdominal sense organ (ASO) in directional sensitivity to water-borne vibrations. The thresholds were determined at 140 Hz. Both species displayed the highest sensitivity to vibrations, the source of which was placed above the animal (opposite to the left valve), rostro-dorsally to its vertical axis. Removal of the ASO led to loss of directional sensitivity and a considerable increase in the sound reaction threshold. Both species were sensitive to modulated ultrasonic vibrations in the range of 30–1000 Hz. This is proposed to be caused by modulated ultrasound effects, provoking weak oscillations of the shell valves at a modulation frequency. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Directional sensitivity of the Japanese scallop Mizuhopecten yessoensis and Swift scallop Chlamys swifti to water-borne vibrations

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Publisher
Springer Journals
Copyright
Copyright © 2005 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1007/s11179-005-0040-7
Publisher site
See Article on Publisher Site

Abstract

Behavioral experiments were conducted on two bivalve species—the Japanese scallop Mizuhopecten yessoensis and the Swift scallop Chlamys swifti—to elucidate the role of their abdominal sense organ (ASO) in directional sensitivity to water-borne vibrations. The thresholds were determined at 140 Hz. Both species displayed the highest sensitivity to vibrations, the source of which was placed above the animal (opposite to the left valve), rostro-dorsally to its vertical axis. Removal of the ASO led to loss of directional sensitivity and a considerable increase in the sound reaction threshold. Both species were sensitive to modulated ultrasonic vibrations in the range of 30–1000 Hz. This is proposed to be caused by modulated ultrasound effects, provoking weak oscillations of the shell valves at a modulation frequency.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Mar 30, 2005

References

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