Interação entre humanos e macacos-prego Cebus libidinosus Spix, 1823 sob a influência de ambientes antropizados
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2011-03-30
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Universidade Federal de Goiás
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Capuchin monkeys are holders of a strong cognition power and high behavioral flexibility. These features contribute to the adaptation to the various locations and situations. The aims of this study were to test whether capuchin monkeys modulate their behavioral response according to the presence of predators/competitors, the characteristics of the micro-environment and the physical and behavioral characteristics of humans involved interactions. The study was conducted in two natural environments located in Goiânia, Goiás: Parque Areião and Campus Samambaia UFG. Two populations of capuchin monkeys Cebus libidinosus were monitored from March to August 2010. The points of sampling were randomized from georeferenced image of the study sites was divided into quadrants of 50 m x 50 m. Data of hypothesis testing: The animal's tolerance for the approximation of the experimenter, were collected four times a week (6 hours / day). In this test we simulate a predation event using as a model of human predator. The approaching experimental sessions began after the obedience of prerequisites. In each session, we sampled the characteristics of the subject (sex and age) and location (canopy cover and understory, number of people and human objects), the initial, warning and escape distances of the animal with respect to the experimenter, the initial and final height of the animal and the distance traveled after the escape. In the hypothesis testing: Interaction between humans and capuchin monkeys, we observe all interactions between capuchin monkeys and visitors of the areas were the result of interactions were recorded, along with age, height, weight, shoulder width, length of hair and presence of bags to visitors, sex and age of the monkeys and characteristics of the micro-environment where the interactions occurred. The tolerance test showed that the physical characteristics of the monkeys and their position on the environment were closely related to the animal's behavioral response, suggesting that animals closer to the trees were able to better assess the risk of predation due to vegetation near it and thus escape the shorter distances. The interaction test indicated that the behavior emitted by the monkeys is affected by body type and behavior of visitors. Our results suggest that capuchin monkeys have the ability to predict the outcome of interactions between competitors and predators on the basis of physical characteristics and micro-environment, selecting those behaviors in their repertoire that enhance success.
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VIEIRA, Priscylla Amora. Interaction betweeen humans and capuchin monkeys Cebus libidinosus Spix, 1823 and under the influence of anthropic environments. 2011. 125 f. Dissertação (Mestrado em Ciências Biológicas - Biologia) - Universidade Federal de Goiás, Goiânia, 2011.