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Terms for Primate Variation

Terms for Primate Variation - d In general larger primates...

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Terms for Primate Variation 1. Diet a. Carnivorous/Insectivorous b. Frugivorous/ Foliovorous/Gummivorous c. Omnivorous 2. Habitat a. Arboreal b. Terrestrial c. Semi-Terrestrial 3. Activity Patterns a. Nocturnal b. Diurnal c. Cathemeral 4. Locomotion a. Intramembral Index – ((humerus + radius/femur +tibia )X 100)) b. Vertical Clinging and Leaping (VCL) c. Arboreal locomotion involving prehensile tails d. Brachiation e. Generalized quadrupedalism f. Bipedalism g. Knuckle-walking h. Fist-walking 5. Body Size a. Smallest living primates < 4 oz. largest about 400 lb. b. Extinct (fossil) forms show even more variation 6. Sexual Dimorphism a. Differences in morphology (especially body size between males and females b. Males are usually larger than females c. Some New World Monkeys and most prosimians are monomorphic (same size)
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Unformatted text preview: d. In general, larger primates have more sexual dimorphism 7. Social Structure a. Solitary – Orangutans b. Polyandrous (two or more males with one female) – Marmosets and Tamarins c. Monogamous (one male with one female) – Gibbons d. Polygynous (one or maybe two males with multiple females) e.g. Harems – Gorillas e. Multi-male, multi female groups – some species of baboons 8. Infant Care a. Most primates have single births b. Females are primary care-givers, males in some species act as protectors c. Only in polyandrous species, males provide more infant care than females...
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