1/22/20121Optimal Foraging: EBNS shapes foraging behaviorOptimality models: represent an economics-based evaluation of the costs and benefits of decision making. •Costs: Energy, Time, Risk•Benefits: Mates, FoodTerms •Optimal Foraging Theory•Central Place Foraging•Marginal Value Theorem•Risk-sensitive foraging (behaviors)
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1/22/20122Marginal Value Theorem•Animals should use the information at hand to predict the future value of a resource patch and make decisions about patch departure based on their assessment of that value•Charnov, E. L. 1976. Optimal foraging, the marginal value theorem. Theor. Pop. Biol. 9:129-136Marginal Value Theorem•Predicts when a forager should leave one patch to search for another, more profitable one