Equal care for own versus adopted infant in tufted capuchins (Sapajus spp.)
- 174 Downloads
This study describes a case of adoption by a female tufted capuchin (Sapajus spp.) who spontaneously adopted a newborn immediately after he was abandoned, then raised him successfully with her own infant. For 7 weeks, we observed the adoptive mother, the adoptee (3 days old at the time of adoption) and the biological infant (4 days old) in order to compare the behavior of the female towards each infant. We focused our attention on different maternal behavioral patterns: grooming, carrying and cuddling behaviors, and we also considered suckling and independent locomotion by the infants. Our results showed no difference in the active care of the adoptive mother. The only significant distinction found between the two infants concerned suckling durations, which were seen to be longer for the adoptee than for the biological infant. We suggested that this could be linked to the gender of the infants, the male adoptee having greater need for milk than the biological daughter.
KeywordsMaternal investment Spontaneous adoption Development Survival
We are grateful to M. Arnaud, C. Joly, H. Birot, L. Briard and K. Knez for helping with data collection and data analysis. We also thank the two reviewers for their suggestions and comments.
- Fragaszy DM, Visalberghi E, Fedigan LM (2004) The complete capuchin: the biology of the genus Cebus. Cambridge University Press, CambridgeGoogle Scholar
- Montagna W (1980) A case of adoption. Primate News 18:20Google Scholar
- Siegel S, Castellan JN (1988) Non parametric statistics for the behavioral sciences. McGraw-Hill, New YorkGoogle Scholar
- Thierry B (1985) A case of “transient adoption” in a captive group of Tonkean macaques (Macaca tonkeana). Lab Primate Newsletter 24:1–6Google Scholar
- Weatherall D, Goodfellow P, Harris J, Hinde R, Johnson L, Morris R, Ross N, Skehel J, Tickell C (2006) The use of non-human primates in research. Academy of Medical Sciences, LondonGoogle Scholar
- Wilson EO (1975) Sociobiology: the new synthesis. Harvard University Press, CambridgeGoogle Scholar