Dominance relationships among male hamadryas baboons (Papio hamadryas) |
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Authors: | Teresa Romero Miguel A Castellanos |
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Institution: | 1. Living Links, Yerkes National Primate Research Center, Emory University, 954 N. Gatewood Road, Atlanta, GA, 30322, USA 2. Departamento de Psicobiología, Facultad de Psicología, Universidad Complutense de Madrid, Campus de Somosaguas, 28223, Madrid, Spain 3. Departamento de Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Universidad Complutense de Madrid, Campus de Somosaguas, 28223, Madrid, Spain
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Abstract: | The concept of dominance has been shown to be useful in describing and predicting social interactions in group-living animals.
However, the dominance relationships among adult hamadryas males (Papio hamadryas) are poorly understood, and systematic data are missing from the literature. This study investigated dominance relationships
among male hamadryas baboons by applying novel statistical techniques to systematic detailed data on agonistic interactions.
We also analyzed the dominance relationship with male age and evaluated the association between dominance and access to mating
partners (i.e. the number of adult females per one-male unit (OMU)), food resources (i.e. monopolization of feeding areas),
and greeting interactions. The derived dominance indexes showed that, in general, leader males were dominant over followers,
and that dominance ability did not correlate with male age. Individual dominance values were very close to each other, suggesting
that dominance relationships among hamadryas males were not very rigid. In addition, dominance values were positively correlated
with number of adult females per OMU but not with feeding priority. Finally, greeting interactions occurred more frequently
between individuals with similar dominance values and with low levels of dominance decidedness. We suggest the need of further
studies, especially in wild populations, to confirm our findings. |
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