Measuring airborne components of seismic body vibrations in a Middle-Asian sand-dwelling Insectivora species, the piebald shrew (Diplomesodon pulchellum)
| Autor: | Elena V. Volodina, Alexandra S. Zaytseva, Ilya A. Volodin, Olga G. Ilchenko, Anastasia L. Chebotareva |
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| Rok vydání: | 2012 |
| Předmět: |
Male
Asia Sound Spectrography Physiology Foraging Aquatic Science Nocturnal Vibration Paleontology Species Specificity biology.animal Agonistic behaviour Animals Molecular Biology Ecology Evolution Behavior and Systematics Ecosystem Diplomesodon pulchellum biology Ecology Insectivora Air Shrews Shrew Thermoregulation biology.organism_classification Silicon Dioxide Digging Acoustic Stimulation Insect Science Animal Science and Zoology Female Vocalization Animal |
| Zdroj: | The Journal of experimental biology. 215(Pt 16) |
| ISSN: | 1477-9145 |
| Popis: | SUMMARY Self-produced seismic vibrations have been found for some subterranean rodents but have not been reported for any Insectivora species, although seismic sensitivity has been confirmed for blind sand-dwelling chrysochlorid golden moles. Studying the vocal behaviour of captive piebald shrews, Diplomesodon pulchellum, we documented vibrations, apparently generated by the whole-body wall muscles, from 11 (5 male, 6 female) of 19 animals, placed singly on a drum membrane. The airborne waves of the vibratory drumming were digitally recorded and then analysed spectrographically. The mean frequency of vibration was 160.5 Hz. This frequency matched the periodicity of the deep sinusoidal frequency modulation (159.4 Hz) found in loud screech calls of the same subjects. The body vibration was not related to thermoregulation, hunger-related depletion of energy resources or fear, as it was produced by well-fed, calm animals, at warm ambient temperatures. We hypothesize that in the solitary, nocturnal, digging desert piebald shrew, body vibrations may be used for seismic exploration of substrate density, to avoid energy-costly digging of packed sand for burrowing and foraging. At the same time, the piercing quality of screech calls due to the deep sinusoidal frequency modulation, matching the periodicity of body vibration, may be important for agonistic communication in this species. |
| Databáze: | OpenAIRE |
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