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Size-dependent physiological responses of shore crabs to single and repeated playback of ship noise
Wale, M.A.; Simpson, S.D.; Radford, A.N. (2012). Size-dependent physiological responses of shore crabs to single and repeated playback of ship noise. Biol. Lett. 9(2): 4 pp. http://dx.doi.org/10.1098/rsbl.2012.1194
In: Biology Letters. Royal Society Publishing: London. ISSN 1744-9561; e-ISSN 1744-957X
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| Author keywords |
anthropogenic noise habituation tolerance pollution global change interindividual variation |
| Auteurs | | Top |
- Wale, M.A.
- Simpson, S.D.
- Radford, A.N.
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| Abstract |
Anthropogenic noise has fundamentally changed the acoustics of terrestrial and aquatic environments, and there is growing empirical evidence that even a single noise exposure can affect behaviour in a variety of vertebrate organisms. Here, we use controlled experiments to investigate how the physiology of a marine invertebrate, the shore crab (Carcinus maenas), is affected by both single and repeated exposure to ship-noise playback. Crabs experiencing ship-noise playback consumed more oxygen, indicating a higher metabolic rate and potentially greater stress, than those exposed to ambient-noise playback. The response to single ship-noise playback was size-dependent, with heavier crabs showing a stronger response than lighter individuals. Repeated exposure to ambient-noise playback led to increased oxygen consumption (probably due to handling stress), whereas repeated exposure to ship-noise playback produced no change in physiological response; explanations include the possibility that crabs exhibited a maximal response on first exposure to ship-noise playback, or that they habituated or become tolerant to it. These results highlight that invertebrates, like vertebrates, may also be susceptible to the detrimental impacts of anthropogenic noise and demonstrate the tractability for more detailed investigations into the effects of this pervasive global pollutant. |
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