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Strong and Consistent Social Bonds Enhance the Longevity of Female Baboons
It is shown that dominance rank and the quality of close social bonds have independent effects on the longevity of female chacma baboons (Papio hamadryas ursinus), and females who form stronger and more stable social bonds with other females live significantly longer than Females who form weaker and less stable relationships. Expand
Generation times in wild chimpanzees and gorillas suggest earlier divergence times in great ape and human evolution
The human–chimpanzee split is dated to at least 7–8 million years and the population split between Neanderthals and modern humans to 400,000–800,000 y ago, which suggests that molecular divergence dates may not be in conflict with the attribution of 6- to 7-million-y-old fossils to the human lineage and 400,,000-Y-old bones to the Neanderthal lineage. Expand
The benefits of social capital: close social bonds among female baboons enhance offspring survival
In a group of free-ranging baboons, Papio cynocephalus ursinus, the offspring of females who formed strong social bonds with other females lived significantly longer than the offspring who formed weaker social bonds, providing the first direct evidence that social relationships among female baboons convey fitness benefits. Expand
Female chacma baboons form strong, equitable, and enduring social bonds
Analysis of the pattern of associations, social interactions, coalitions, and aggression among chacma baboons in the Okavango Delta of Botswana over a 16-year period indicates that adult females form close, equitable, supportive, and enduring social relationships. Expand
The Choice of Post-conflict Interactions in Wild Chimpanzees (Pan troglodytes)
Summary Some costs of cone icts remain after an aggressive interaction has been terminated. Postcone ict management in social living animals can reduce those costs by means of a variety ofExpand
Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees
It is proposed that food-sharing events co-opt neurobiological mechanisms evolved to support mother–infant bonding during lactation bouts, and may act as facilitators of bonding and cooperation between unrelated individuals via the oxytocinergic system across social mammals. Expand
Social stressors and coping mechanisms in wild female baboons (Papio hamadryas ursinus)
Although GC levels in female baboons are most strongly influenced by events that directly affect their reproductive success, subtle social factors associated with the loss of predictability and control also seem to exert an effect. Expand
Focused grooming networks and stress alleviation in wild female baboons
It is concluded that close bonds with a few preferred partners allow female baboons to alleviate the stress associated with social instability. Expand
Wild Chimpanzees Inform Ignorant Group Members of Danger
It is shown that chimpanzees were more likely to alarm call in response to a snake in the presence of unaware group members than inThe presence of aware group members, suggesting that they recognize knowledge and ignorance in others. Expand
Food Competition and Linear Dominance Hierarchy Among Female Chimpanzees of the Taï National Park
The cross-site comparison indicates that the differences in female dominance hierarchies among the chimpanzee study sites are affected by food competition, predation risk and observation time. Expand