Guinea Pig Cavia porcellus pups emit high-pitched distress whistles when separated from their mother. In order to assess the influence of the duration of a brief isolation period on whistle acoustic structure, we recorded the distress whistles of six 8-day old pups separated for 15 min from their group in a novel environment and compared the mean values of the first and last 30 whistle notes. Acoustic analysis revealed, throughout the session, a significant decrease in whistle duration, an increase in mean frequency and a tendency for a decrease in number of harmonics in the first part of the note. Results demonstrate that, throughout a brief isolation period, the vocal response of Guinea Pig pups to isolation undergoes structural changes possibly related to time-dependent changes in motivational state.
CITATION STYLE
Monticelli, P. F., Tokumaru, R. S., & Ades, C. (2004). Isolation induced changes in Guinea Pig Cavia porcellus pup distress whistles. In Anais da Academia Brasileira de Ciencias (Vol. 76, pp. 368–372). Academia Brasileira de Ciencias. https://doi.org/10.1590/S0001-37652004000200027
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