Reproduction, Mortality, and Female Reproductive Success in Chacma Baboons of the Okavango Delta, Botswana
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Life history and the competitive environment: trajectories of growth, maturation, and reproductive output among chacma baboons.
The social environment is a key feature influencing primate life histories. Chacma baboons (Papio hamadryas ursinus) are a female-bonded species with a strict linear dominance hierarchy. In this species, the allocation of energy to competing demands of growth and reproduction is hypothesized to vary as a function of competitive ability, which in turn increases with social rank. Since growth rat...
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___–1 ___ 0 ___ +1 The fundamental conflict of reproductive interests between males and females, originally articulated by Trivers (1972) and Parker (1979), may have diverse evolutionary consequences at multiple levels: genetic, morphological, physiological , social, ecological, life historical (Arnqvist and Rowe 2005; Chapman 2006). This volume addresses one dramatic manifestation of this conf...
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Female baboons (Papio hamadryas spp.) must contend with myriad potential stressors on a daily basis. In a previous study on female chacma baboons, Papio hamadryas ursinus, living in the Okavango Delta of Botswana, increases in glucocorticoid (GC) concentrations were associated with female reproductive stage, male immigration and the threat of infanticide. Here, we extend this previous analysis ...
متن کاملMale Infanticide in Wild Savanna Baboons: Adaptive Significance and Intraspecific Variation
A " friendship " in wild chacma baboons of the Okavango Delta: adult male, adult female, and her infant. (Photo by Ryne A. Palombit.)
متن کاملFactorsmediating Inter - Group Encounters in Savannahbaboons ( Papio Cynocephalusursinus )
Inter-group encounters among baboons range from peaceful to aggressive.During 23 months we observed 110 inter-group interactions involving four groups of chacma baboons in the Okavango Delta, Botswana. Results supported the hypothesis that male behavior functions to prevent extra-group males from gaining access to sexually receptive females. Males were more likely to chase females in their own ...
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تاریخ انتشار 2008