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Social Bonds of Female Baboons Enhance Infant Survival
Joan B. Silk, Susan C. Alberts and Jeanne Altmann
New Series, Vol. 302, No. 5648 (Nov. 14, 2003), pp. 1231-1234
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/3835504
Page Count: 4
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Among nonhuman primates, females often form strong bonds with kin and other group members. These relationships are thought to have adaptive value for females, but direct effects of sociality on fitness have never been demonstrated. We present 16 years of behavioral data from a well-studied population of wild baboons, which demonstrate that sociality of adult females is positively associated with infant survival, an important component of variation in female lifetime fitness. The effects of sociality on infant survival are independent of the effects of dominance rank, group membership, and environmental conditions. Our results are consistent with the evidence that social support has beneficial effects on human health and well-being across the life span. For humans and other primates, sociality has adaptive value.
Science © 2003 American Association for the Advancement of Science