Observation of a birth among wild toque macaques (Macaca sinica)
Most toque macaques give birth to their infants during the night when resting arboreally. Here we report on a birth that occurred in daytime (at 0916 hr) and on the ground. The mother was 7.6 years old; the birth was her second. Prepartum behaviors included lordosis, arching of the back, stretching, squatting, rolling on the ground, and anogenital self-examination. During the birth the female was isolated about 100 m from the rest of her group. The mother stood bipedally during parturition and assisted delivery with her hands. The infant was born within 2 min after first appearing at the vulva. It immediately clung to the mother’s leg and vocalized. The mother licked the infant and oriented it toward her ventrum. She resumed foraging behavior within 20 min after parturition. The infant nursed for the first time 2.25 hr after being born. The mother ate part of the placenta, but the alpha female of the group usurped and also ate a portion of it. Curious group members sniffed and looked at the infant but did not touch it.
Key wordsMacaca sinica parturition behavior neonate mother-infant
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- Altmann, J. (1980).Baboon Mothers and Infants, Harvard University Press, Cambridge, Mass.Google Scholar
- Brandt, E. M., and Mitchell, G. (1971). Parturition in primates: Behavior related to birth. In Rosenblum, L. A. (ed.),Primate Behavior, Vol. 2, Academic Press, New York, pp. 177–224.Google Scholar
- Dittus, W. P. J. (1975). Population dynamics of the toque monkey,Macaca sinica. In Tuttle, R. H. (ed.),Socioecology and Psychology of Primates, Mouton, The Hague, pp. 125–152.Google Scholar
- Dittus, W. P. J. (1977). The social regulation of population density and age-sex distribution in the toque monkey.Behaviour 63: 281–322.Google Scholar
- Dittus, W. P. J., and Thorington, R. W., Jr. (1981). Techniques for aging and sexing primates. In Subcommittee on Conservation of Natural Primate Populations (ed.),Techniques for the Study of Primate Population Ecology, National Academy Press, Washington, D.C., pp. 81–131.Google Scholar
- Jolly, A. (1972).The Evolution of Primate Behavior, Macmillan, Collier-Macmillan, London.Google Scholar
- Sokal, R. R., and Rohlf, F. J. (1981).Biometry, 2nd ed., W. H. Freeman, San Francisco.Google Scholar