Get the best of Smithsonian magazine by email. At puberty, male primates show a variety of behavioral changes and, during adulthood, males of seasonally breeding species may be more aggressive during the mating season, when testosterone levels are maximal. The historical context of primate behavioral studies has been thoroughly reviewed elsewhere (e.g., Strum & Fedigan, 2000; Kelley & Sussman, 2007), so my aim here is mainly to establish a framework for interpreting how we reached our present state of knowledge about primate social behavior. It should be remembered that very few of the 188 primate species have been studied experimentally and that great behavioral and physiological diversity occurs within the order. This review deals with possible central and peripheral effects of androgens upon primate aggressive behavior. "Chimpanzees have something like ‘community concern,'" he says. Hormonally Induced Changes to the Mind and Brain. Migration of male hamadryas baboons into anubis groups in the Awash National Park, Ethiopia. Please check your email for instructions on resetting your password. Smithsonian Institution, Smithsonian Magazine Endocrine aspects of social instability in the olive baboon (Papio anubis). |. In future, marmosets may provide a suitable model for such studies, because there is evidence that sexual differentiation of brain by androgen occurs postnatally in these monkeys. of aggressive energy causing us to seek out appropriate eliciting stimuli in environments capable of releasing it. Therefore, generalizations about the effects of androgens upon aggressive behavior in primates … 17th Annual Photo Contest Finalists Announced. If you do not receive an email within 10 minutes, your email address may not be registered, Primate Social Behavior Dominance Communication Aggressive Interactions Affiliation and Altruism Reproduction and Reproductive Behaviors Female and Male Reproductive Strategies Sexual Selection Infanticide as a Reproductive Strategy? Many prosimians and New World monkeys use scent‐marking behaviors and, in males, androgen‐dependent chemical cues may be involved in sexual recognition and territorial behavior. Aggression in interactions of immature rhesus monkeys: components, context and relation to affiliation levels. 11, No.2, 1983 107 10.1002/1098-2337(1981)7:2<145::AID-AB2480070207>3.0.CO;2-M. Testosterone across successive competitions: Evidence for a ‘winner effect’ in humans?. Such measures often do not correlate with those obtained by quantifying aggressive interactions. Effects of prepubertal ovariectomy on the development of scent glands, scent marking, and aggressive behaviors of female tamarin monkeys (Saguinus fuscicollis). More data are required on primates, however, since rhesus monkeys show some important differences from rodents as regards the effects of androgen upon sexual differentiation of the hypothalamus. Primate social behavior—Anxiety or depression?. Observations on effects of neonatal castration upon sexual and aggressive behavior in the male common marmoset (Callithrix jacchus). Urinary testosterone metabolite levels and aggressive behaviors in male and female bonobos (Pan paniscus). Social housing of surplus males of Javan langurs (Trachypithecus auratus): Compatibility of intact and castrated males in different social settings. One problem that clouds interpretation of experimental work is that measurements of dominance have often been employed, such as competition tests for food and water. Fetal gender and aggression in pregnant stumptail monkeys (Macaca arctoides). Admirers have ranged from Harvard biologist E. O. Wilson to Newt Gingrich who, as Speaker of the House, placed one of de Waal's books on a list of recommended reading for incoming Republicans. Effect of spatial crowding on aggressive behavior in a bonobo colony. Testosterone, and winning and losing in human competition. Female testosterone, dominance rank, and aggression in an Ethiopian population of hybrid baboons. One afternoon in the 1970s, a soft-spoken young biologist observed a defining moment at a Dutch zoo: two male chimpanzees fought fiercely, only to retreat and then embrace each other peaceably. Thus began de Waal's quiet revolution in how we discuss animal behavior, particularly the often aggressive encounters of primates. Having logged thousands of hours watching primates from chimpanzees to macaques, de Waal has come to believe that far from being natural-born "killer apes," as they had often been described, chimps and other primates are far more attuned to peacemaking. Terms of Use Castration Lowers Aggression but not Social Dominance in Male Haplochromis burtoni (Cichlidae).

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