Copulatory vocalizations of female macaques (Macaca fascicularis): Variability factors analysis |
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Authors: | Bertrand L Deputte Michel Goustard |
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Institution: | (1) Station Biologique de Paimpont, 35380 Plelan Le Grand, France;(2) Laboratoire d’Ethologie expérimentale et comparée, “La Petite Beauce,”, 91530 Saint Cheron, France |
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Abstract: | In 234 copulations, male and female behavioural patterns were collected, especially the vocal pattern for the female. Moreover
quantitative structural analysis was performed on 38 of these female copulatory vocalizations. A multifactorial analysis,
ANAFAC, was performed to seek relations between (1) utterance of female copulatory call and male and female copulatory behaviour
and (2) these patterns and the great variability of female calls. Utterance of female copulatory vocalizations is essentially
due to the female’s own copulatory behaviour in periods of intense sexual activity. Long female calls are related to male
ejaculation, and those “rich” in harmonics are related to visual and tactile communicatory signals exchanged by the male and
the female during a mount. This analysis strongly confirms the tied bond between quality of a call and internal state of the
emitter. Long calls, rich in harmonics, may serve as signals maintaining or strengthening the possibly temporary preferential
relation between male and sexually receptive female. |
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