Chapter 8 Primate Behavior

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Presentation transcript:

Chapter 8 Primate Behavior

Semi-free-ranging environment Studying Primates Captive study Semi-free-ranging environment Field study

The Evolution of Primate Social Behavior Proximate causes: hormonal or physiological reason to act Deeper, evolved strategies: shaped over millions of years of natural and sexual selection

The Evolution of Primate Social Behavior (cont’d) Social Behavior and Reproductive Asymmetry Female philopatry Male philopatry

Philopatry Female Philopatry the most common form. Male Philopatry found among Chimps and Bonobos.

The Evolution of Primate Social Behavior (cont’d) Male Reproductive Strategies Dominance Female Reproductive Strategies Sexual Receptivity signals

Why are Nonhuman Primates Social? The Paradox of Sociality Access to Mates Food Avoiding Predators

Why are Nonhuman Primates Social? (cont’d) Types of Nonhuman Primate Societies Solitary Monogamy Polygyny One-male Multimale Fission-Fusion Polygyny Polyandry