The effect of loading on disturbance sounds of the Atlantic croaker Micropogonius undulatus: Air versus water
Original Publication Date
The Journal of the Acoustical Society of America
DOI of Original Publication
Date of Submission
Physiological work on fish sound production may require exposure of the swimbladder to air, which will change its loading (radiation mass and resistance) and could affect parameters of emitted sounds. This issue was examined in Atlantic croaker Micropogonius chromis by recording sounds from the same individuals in air and water. Although sonograms appear relatively similar in both cases, pulse duration is longer because of decreased damping, and sharpness of tuning (Q factor) is higher in water. However, pulse repetition rate and dominant frequency are unaffected. With appropriate caution it is suggested that sounds recorded in air can provide a useful tool in understanding the function of various swimbladder adaptations and provide reasonable approximation of natural sounds. Further, they provide an avenue for experimentally manipulating the sonic system, which can reveal details of its function not available from intact fish underwater.
Copyright (2004) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in J. Acoust. Soc. Am. 116, 1271 (2004) and may be found at http://dx.doi.org/10.1121/1.1736271.
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VCU Biology Publications
The following article appeared in J. Acoust. Soc. Am. 116, 1271 (2004) and may be found at http://dx.doi.org/10.1121/1.1736271.