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Unformatted text preview: Lecture 2 22/09/2008 22:30:00 ← (Based on lecture slides) ← Distribution • Primates (except humans and macaques) are almost exclusively tropical ← Locomotion • Different habitats pose different challenges on locomotion • Most primates are good climbers • Primates tend to have divergent big toes/thumbs; long, curved fingers and long “palms” • Most primates are quadrupeds (with adaptations for climbing); Some are suspensory (usually have long, curved fingers, flexible wrists, high shoulders, long arms & wide forearms); and some knuckle walk ← Body Mass • Primates can very in size a lot; from the huge 200kg gorilla to the 100g mouse lemur • Basal Metabolic Rate (BMR) is the energy needed for basic functions o Larger animals need relatively less energy than smaller animals; they generally have long guts and eat lower quality foods (high fiber, low protein, low calories, etc) o Small animals need to consume more calories per unit of body weight; They have high energy requirements and shorter guts. Their food quality is typically high (low fiber, high protein, high calories, etc.) ← Insectivory • Small, nutritious, hard to get • Bugs generally have tough exoskeleton so the teeth must be able to pierce through this • Adaptations that help: binocular vision, manual dexterity, small, nocturnal ← Frugivory • Need dentition for grinding? The food • Adaptations that help: vision (color sensitivity), touch, manual dexterity ← Folivory • Problem= cellulose, toxins • Dentition usually has shearing crests to tear leaves, etc • Adaptations that help: Foregut fermenters (multicompartimental...
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This note was uploaded on 09/25/2008 for the course HEB 1330 taught by Professor Gilby,wrangham during the Fall '08 term at Harvard.
- Fall '08