Titlebook: New Perspectives in the Study of Mesoamerican Primates; Distribution, Ecolog Alejandro Estrada,Paul A. Garber,LeAndra Luecke Book 2006 Spri

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Demographic Features of , Populations in Extensive and Fragmented Forestsal forests. Here, we report results from population surveys conducted in eight extensive forests sites (>8.5 km.) in Mexico and Guatemala. We also surveyed the black howler population in the fragmented landscape bordering two of the extensive forest reserves. Based on the 120 troops encountered in t

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Forest Fragmentation and Its Effects on the Feeding Ecology of Black Howlers (,) from the Calakmul Aormed by human activities. In this study, we examined the degree to which . feeding habits differed between two sites in the conserved forest of the Calakmul Biosphere Reserve (CBR) and two forest fragments outside the reserve, and how monkeys select the trees on which they feed. Our results suggest

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Leap, Bridge, or Ride? Ontogenetic Influences on Positional Behavior in , and ,equency of positional behaviors while young . individuals vary significantly from the adult condition. Young . (6–24 months of age) differed from adult . in leaping, bridging, and climbing. Leaping modes significantly decreased during ontogeny in . while bridging modes increased significantly during

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