Phys A L13

Phys A L13 - 11/7/2007 & 11/9/2007 Physical...

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Physical Anthropology: Lecture 13 (Chapter 6 and 7) I. Primate Sociality A. Most primates expect for orangutans and some prosimians to spend most of their lives in stable groups of familial individuals B. Solitary: females maintain separate home ranges or territories and associate mainly with their dependent off-spring may establish their own territories of home ranges or defend ranges of several adult females (orangutans and prosimians) C. Mongamy: 1 male and 1 female pair bond (Gibbon) D. Polyandry: 1 female and 2 or more males (Marmosets, Tamarins) E. Polgyny: 1 male and multi-female groups (Howler, Langur) or multi-male and multi-female (Macagues, Baboons) II. Pros and Cons of Social Life A. Benefits 1. Acquire and control sources 2. Less vulnerable to predators 3. Detection, deterrence, dilution (against predators) B. Costs 1. More competition over access to food and water 2. More vulnerable to disease 3. Hazards from species (cannibalism, incest, infanticide, etc) C. Size and composition of groups reflect a compromise between cost and benefits of sociality D. The magnitude of the costs and benefits is influenced by social and ecological factors E. Socioecology: study of how natural selection shapes social organization in response to ecological pressures III. Primate Mating Systems A. Understanding reproductive strategies of non-human primates of interest to us from an evolutionary perspective for we share many elements of our reproductive
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This note was uploaded on 04/08/2008 for the course ANTH 5 taught by Professor Gaulin during the Fall '07 term at UCSB.

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Phys A L13 - 11/7/2007 & 11/9/2007 Physical...

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