Glucocorticoids are hormones that mediate the energetic demands that accompany
environmental challenges. It is therefore not surprising that these metabolic hormones have …

Primates are long-lived, highly social mammals who maintain long-term social bonds and
cohesive social groups through many affiliative mechanisms, foremost among them social …

This comprehensive introductory text integrates evolutionary, ecological, and demographic
perspectives with new results from field studies and contemporary noninvasive molecular …

The social environment is one of the primary sources of challenging stimuli that can induce a
stress response in animals. It comprises both short-term and stable interactions among …

Primate mothers have the potential to influence the development of species-typical aspects
of their offspring's behavior as well as their individual sociosexual and reproductive …

In animals with slow ontogeny and long-term maternal investment, immatures are likely to
experience the birth of a younger sibling before reaching maturity. In these species, the birth …

Eco‐tourism and human–wildlife interaction can lead to increases in stress, vigilance and
aggression in many species, however, studies investigating wildlife viewing are scarce. We …

Problem Limited literature is available about women who wish to breastfeed but experience
unexpected feelings of aversion in reaction to their infant suckling at the breast while …

Primates maintain a variety of social relationships and these can have fitness
consequences. Research has established that different types of social relationships are …

Sexual selection produces extravagant male traits, such as colorful ornaments, via female
mate choice. More rarely, in mating systems in which males allocate mating effort between …