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Biological Anthropology Notes 7

Biological Anthropology Notes 7 - Biological Anthropology...

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Biological Anthropology Notes November 6, 2006 - Primate taxonomy continued o Pongidae Splits into the Pongo (Orangutan), Gorilla (gorilla), and pan (chimpanzee) Orangutan o Found in Borneo and Sumatra o Very highly sexually dimorphic Males about twice as heavy as females o Generally solitary o Up in the trees often Suspensory locomotion (too heavy to do true brachiation in the trees due to weight issues) Fist walk on the ground Gorilla o Found exclusively in Africa Highland and lowland gorilla o Sexually dimorphic Males will weigh over 400 pounds, while females will be around 200 o Single males groups ‘silverback male’ o Too big to brachiate Knuckle walk Chimpanzees o Two species found in Africa Common chimp (pan troglodytes) Bonobo (pan paniscus) o Our closest relatives o Knuckle walking on the ground o Less sexually dimorphant o Estrus swelling in females o Multi-males/multi-female groups o Hunting Hominidae o Humans o One species—Homo sapiens o Bipedalism - Body size and diet o Mathematics of body size The larger the organism, the smaller the ratio of surface area to volume
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Small animals lose body heat faster than large animals Implications for metabolism Small animals have faster metabolisms to generate more body heat Implications for diet
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