Rat ultrasonic vocalization: short-range communication


Rodents are subjected to a significant environmental pressure as prey for a large number of carnivore predators. Ultrasonic vocalization is one of the defensive adaptations which minimize the chances of being detected by a predator. Two mechanisms of ultrasound production in the larynx are discussed, with a whistle mechanism being the most probable one. Physical features of ultrasounds, such as greater directionality, greater attenuation, greater scattering, decreased localizability than vocalizations audible to humans and suitability for communication in underground burrows, make ultrasound a superior alternative to sonic vocalization for shortrange communication, particularly in emergencies.

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@inproceedings{Brudzynski2009RatUV, title={Rat ultrasonic vocalization: short-range communication}, author={Stefan M. Brudzynski and Neville H. Fletcher}, year={2009} }