A5024678335- Primate Behavior and Ecology
- Evolutionary Psychology and Human Behavior
- Animal Behavior and Reproduction
- Evolutionary Game Theory and Cooperation
- Animal Vocal Communication and Behavior
- Neuroendocrine regulation and behavior
- Demographic Trends and Gender Preferences
- Child and Animal Learning Development
- Cultural Differences and Values
- Wildlife Ecology and Conservation
- Psychology of Moral and Emotional Judgment
- Experimental Behavioral Economics Studies
- Language and cultural evolution
- Human-Animal Interaction Studies
- Indigenous Studies and Ecology
- Game Theory and Applications
- Zoonotic diseases and public health
- Bat Biology and Ecology Studies
- Birth, Development, and Health
- Rangeland Management and Livestock Ecology
- Stress Responses and Cortisol
- Global Maternal and Child Health
- Developmental and Educational Neuropsychology
- Global Health and Surgery
- Leadership, Courage, and Heroism Studies
Arizona State University
2016-2025
University of California, Los Angeles
2005-2014
University of California System
2006-2007
Duke University
1984-2003
Chicago Zoological Society
1987-2003
Princeton University
2003
National Museums of Kenya
1987-2003
University of Cambridge
2002
University of California, Davis
1984-1997
Pitzer College
1997
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 never been demonstrated. We present 16 years behavioral data from a well-studied population wild baboons, which demonstrate that adult is positively associated infant survival, an important component variation in female lifetime fitness. The survival independent the dominance rank, membership,...
Sociality has evolved in many animal taxa, but primates are unusual because they establish highly differentiated bonds with other group members. Such particularly pronounced among females species like baboons, female philopatry and male dispersal. These relationships seem to confer a number of short-term benefits on females, sociality enhances infant survival some populations. However, the long-term consequences social adult have not been well established. Here we provide first direct...
Humans are an exceptionally cooperative species, but there is substantial variation in the extent of cooperation across societies. Understanding sources this variability may provide insights about forces that sustain cooperation. We examined ontogeny prosocial behavior by studying 326 children 3-14 y age and 120 adults from six societies (age distributions varied societies). These span a wide range extant human culture, geography, subsistence strategies, including foragers, herders,...
I have suggested that local resource competition and male dispersal may generally lead to (1) intense among females for resources reproductive opportunities, (2) limiting the recruitment of females, (3) extensive maternal investment in vulnerable female offspring, (4) facultative adjustment sex ratio progeny relation competitive abilities. This argument appears be consistent with evidence drawn from several species macaques baboons. The size groups limited by availability resources; actively...
We evaluate the relative effectiveness of four methods for preserving faecal samples DNA analysis. PCR assays fresh collected from free‐ranging baboons showed that amplification success was dependent on preservation method, PCR‐product size, and whether nuclear or mitochondrial assayed. Storage in a DMSO/EDTA/Tris/salt solution (DETs) most effective DNA, but storage 70% ethanol, freezing at –20°C drying performed approximately equally well short (<200 bp) fragments. Because is diluted...
Primatologists have recently begun to use the word 'friendship' describe close, af liative relationships among monkeys and apes.This seems be part of a growing backlash against what some researchers see as narrowminded preoccupation with negative aspects animal behavior, such competition, con ict, manipulation, coercion, deception (e.g. de Waal, 1996).There is new emphasis on more positive features coordination, negotiation, reconciliation, cooperation, that animals mitigate icts interest...
Abstract Analysis of the observed patterns two forms putative altruism (grooming and coalition formation) among adult female members a group captive bonnet macaques (Macaca radiata) indicates that both kinship dominance rank influence distribution rate these behaviors. Females groom their relatives more often reciprocally than they unrelated females similar ranks. In addition, are likely to support nonrelatives incur greater risks when do so. Grooming formation not occur exclusively kin....
Female baboons,Papio cynocephalus ursinus, often grunt when approaching lower-ranking females. These grunts appear to have a mollifying effect on subordinates. Observations of 19 adult females conducted over an 11-month period in the Okavango Delta, Botswana, revealed that high-ranking were less likely supplant more subordinate females, and engage friendly interactions with them, they grunted their partners than remained silent. Grunts also functioned reconcile opponents following fights. In...
Analyses of the pattern associations, social interactions, coalitions, and aggression among chacma baboons (Papio hamadryas ursinus) in Okavango Delta Botswana over a 16-year period indicate that adult females form close, equitable, supportive, enduring relationships. They show strong stable preferences for close kin, particularly their own mothers daughters. Females also attachments to unrelated who are age likely be paternal half-sisters. Although absolute rates kin as high nonkin, more...