ANTH 222 Lecture Notes - Lecture 1: Exact Sciences, Orangutan, Pair Bond
13 Dec 2018
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Document Summary
Lecture 4 notes: gibbons: sociality, pair bond. Increased social interaction during periods of fruit abstinence. Gibbons: social monogamy: adult membership changes often, death, desertion, displacement, short dispersal: members of neighboring groups are relatives, smallest of the apes. Orangutan social behavior: travel bands, consortship, mother and daughter may live together but for the most part solitary. Grouping pattern: humans sometimes killing orangutans for territory, primates in general are very social. Orangutans: sex: community face to face, a lot of investment, very low reproductive rate, every 7 years. Gorilla: social structure: silverback male, multi-male (young adult, time a lot of food, some subordinate silverback, biologists try to make rules, biology is not exact science. Infanticide: new silverback, reproductive strategy, female transfer, so no cooperation, female aggression, some hierarchical dominance among females. Infanticide: killing of infants: doesn"t make sense to invest time in other people"s children.
