In most social mammals, some females disperse from their natal group while others remain
and breed there throughout their lives but, in a few, females typically disperse after …

Considerable evidence suggests that the steroid hormone testosterone mediates major life-
history trade-offs in vertebrates, promoting mating effort at the expense of parenting effort or …

Publisher's description: Why do males of some species live with a single mate when they are
capable of fertilizing more than one female's eggs? Why do some females pair only with one …

AH Harcourt, a well-known professor of anthropology at the University of California, has
published papers on gorillas since 1978 and KJ Stewart has worked with him since 1987 …

We know a great deal about roles the environment plays in shaping survival, reproductive
success, and even social systems among primates. But how do primate life histories affect …

P RIMATE SOCIALITY has many faces. Some callitrichines form small groups with just one
reproducing female and others who help care for her young. Hamadryas baboons (Papio …

This is an exciting time to be a primate behavioral ecologist. Only a decade ago, it seemed
as though there was a comfortable consensus shaping about the most important ecological …

Early Human Kinship brings together original studies from leading figures in the biological
sciences, social anthropology, archaeology, and linguistics to provide a major breakthrough …

Theoretical models and empirical studies in various taxa have identified important links
between variation in sex roles and the number of adult males and females (adult sex ratio …

Male takeovers are associated with infant wounding and death in 3 of 4 capuchin species. In
this paper, I analyze the effects of male takeovers on infant mortality and the subsequent …