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Environmental constraints drive the partitioning of the soundscape in fishes
Ruppé, L.; Clement, G.; Herrel, A.; Ballesta, L.; Decamps, T.; Kéver, L.; Parmentier, E. (2015). Environmental constraints drive the partitioning of the soundscape in fishes. Proc. Natl. Acad. Sci. U.S.A. 112(19): 6092-6097. https://dx.doi.org/10.1073/pnas.1424667112
In: Proceedings of the National Academy of Sciences of the United States of America. The Academy: Washington, D.C.. ISSN 0027-8424; e-ISSN 1091-6490, meer
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| Trefwoord |
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| Author keywords |
acoustic communication; signal interference; passive acousticrecordings; diversity of sounds; frequency partitioning |
| Auteurs | | Top |
- Ruppé, L.
- Clement, G.
- Herrel, A.
- Ballesta, L.
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- Decamps, T.
- Kéver, L.
- Parmentier, E.
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| Abstract |
The underwater environment is more and more being depicted as particularly noisy, and the inventory of calling fishes is continuously increasing. However, it currently remains unknown how species share the soundscape and are able to communicate without misinterpreting the messages. Different mechanisms of interference avoidance have been documented in birds, mammals, and frogs, but little is known about interference avoidance in fishes. How fish thus partition the soundscape underwater remains unknown, as acoustic communication and its organization have never been studied at the level of fish communities. In this study, passive acoustic recordings were used to inventory sounds produced in a fish community (120 m depth) in an attempt to understand how different species partition the acoustic environment. We uncovered an important diversity of fish sounds, and 16 of the 37 different sounds recorded were sufficiently abundant to use in a quantitative analysis. We show that sonic activity allows a clear distinction between a diurnal and a nocturnal group of fishes. Moreover, frequencies of signals made during the day overlap, whereas there is a clear distinction between the different representatives of the nocturnal callers because of a lack of overlap in sound frequency. This first demonstration, to our knowledge, of interference avoidance in a fish community can be understood by the way sounds are used. In diurnal species, sounds are mostly used to support visual display, whereas nocturnal species are generally deprived of visual cues, resulting in acoustic constraints being more important. |
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