Variations in competitive mechanisms of captive male hamadryas-like baboons in two feeding situations |
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Authors: | Carlos Gil-Burmann Fernando Peláez Susana Sánchez |
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Institution: | (1) Dpto. de Psicologóa Biológica y de la Salud, Facultad de Psicología, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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Abstract: | Experiments were carried out to determine the influence of food distribution (clumped vs dispersed) on processes of competition
among seven captive male hamadryas-like baboons. Spatial cohesion, cohesive behaviours that males performed and received from
their females, and aggressive and feeding behaviours of the males were collected during 35 min after food supply. Median values
and variability of these variables were compared in both the feeding situations. Food distribution influenced both asymmetries
in access and the form of competition. When food was clumped, those with less access fed by means of compensatory or alternative
strategies (away from the main source and/or by feeding supplants), and they were more aggressive towards other males. When
food was dispersed, all individuals could feed simultaneously, males that were more aggressive were those with less cohesive
OMUs, despite the fact that cohesive behaviours remained constant. Females appeared to contribute to variation in the OMU's
cohesion through their responses to both food distribution and males' competitive ability. |
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Keywords: | Papio hamadryas Baboons One-male units Males Food distribution Competitive mechanisms |
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