Lecture 2 - Lecture 2 22:30:00(Based on lecture slides...

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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 
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Folivory Problem= cellulose, toxins Dentition usually has shearing crests to tear leaves, etc
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