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Reliable characterization of sound features in fishes begins in open-water environments
Banse, M.; Lecchini, D.; Bertucci, F.; Parmentier, E. (2023). Reliable characterization of sound features in fishes begins in open-water environments. J. Acoust. Soc. Am. 154(1): 270-278. https://dx.doi.org/10.1121/10.0020149
In: The Journal of the Acoustical Society of America. American Institute of Physics: New York. ISSN 0001-4966; e-ISSN 1520-8524, meer
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Sargocentron caudimaculatum (Rüppell, 1838) [WoRMS]
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- Banse, M., meer
- Lecchini, D.
- Bertucci, F., meer
- Parmentier, E., meer
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| Abstract |
Many fishes use sounds to communicate in a wide range of behavioral contexts. In monitoring studies, these sounds can be used to detect and identify species. However, being able to confidently link a sound to the correct emitting species requires precise acoustical characterization of the signals in controlled conditions. For practical reasons, this characterization is often performed in small sized aquaria, which, however, may cause sound distortion, and prevents an accurate description of sound characteristics that will ultimately impede sound-based species identification in open-water environments. This study compared the sounds features of five specimens of the silverspot squirrelfish Sargocentron caudimaculatum recorded at sea and in aquaria of different sizes and materials. Our results point out that it is preferable to record fish sounds in an open-water environment rather than in small aquaria because acoustical features are affected (sound duration and dominant frequency) when sounds are recorded in closed environments as a result of reverberation and resonance. If not possible, it is recommended that (1) sound recordings be made in plastic or plexiglass aquaria with respect to glass aquaria and (2) aquaria with the largest dimensions and volumes be chosen. |
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