Lecture 10 (2-15)

Lecture 10 (2-15) - PRIMATE BEHAVIOR Behavior is complex:...

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Behavior is complex: need to understand both the environmental and physiological basis FIELD STUDIES: - Pre 1940: short, captive studies, emphasis on male behavior and aggression - Post 1940: free-ranging primates, more focus on all members of the group Primate Socioecology Socioecology studies the relationship between social behavior and the natural environment. One assumption is that components of ecological systems evolved together. To understand how one component works, it is necessary to determine the species’ relationships with their environment. Evolutionary Perspective: Behavioral Ecology: natural selection acts on behavior just as it acts on physical characteristics Behavior is a phenotypic expression and genes code for specific behaviors. But also a relationship between environment and social behaviors Behaviors are plastic/flexible Factors that Influence Social Structure: Predation Body size Metabolism Diet Resource distribution Life History Variables Human activities (researchers, neighbors) Types of Social Interactions: Antagonistic: - Dominance: social status or rank. Dominance hierarchies in multimale groups. Male (based on strength) Female (based on mother’s status) - Fighting/Aggression: mostly for change in rank. In chimps see warfare-like aggression - Infanticide: reproductive strategy. Males kill infants that are not theirs and mate with victim’s mother Affiliative/Cooperative: - Grooming: hygiene but also to reduce tensions - Mother-Infant: basic social unit = matrifocal unit. The mother-infant relationship
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Lecture 10 (2-15) - PRIMATE BEHAVIOR Behavior is complex:...

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