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ANP 325 Primate Social Organization

ANP 325 Primate Social Organization - Primate Social...

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Lecture Topic: Solitary Different group Transfer to another group Individual selection for sociality Limited resources split by group size Increased energy outtake (distance traveled) for same amount of food Travel costs increase with group size e.g. 75m Increased feeding competition Less social bonds Time budgets change, more time spent on feeding and traveling Increased risk of disease Increased competition for mates Group Costs Dilution effect Predators select nearest prey "Domain of danger" All locations where the individual is the nearest prey of predator (old, sick, young) e.g. 1 Individual = 360 degrees, get to the center Raptors, snakes, cats Selfish herd Predator Confusion Earlier predator detection Primates observe other primates in own group, data is mixed Reduced Individual costs of vigilance (each person spends less time vigilant) Predator Mobbing, # of adult males increases, rate of success decreases
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