Jan 23 handout - 1/22/2012 Optimal Foraging: EBNS shapes...

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1/22/2012 1 Optimal Foraging: EBNS shapes foraging behavior Optimality models: represent an economics-based evaluation of the costs and benefits of decision making. Costs: Energy, Time, Risk Benefits: Mates, Food Terms Optimal Foraging Theory Central Place Foraging • Marginal Value Theorem • Risk-sensitive foraging (behaviors)
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1/22/2012 2 Marginal 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. 9:129-136 Marginal Value Theorem • Predicts when a forager should leave one patch to search for another, more profitable one
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1/22/2012 3 Honeybee Experiment • Question: How do honeybees maximize their efficiency collecting nectar? Schmid-Hempel, et al. 1985. Honeybees maximize efficiency by not filling their crop. Behav. Ecol. Sociobiol. 17: 61-66.
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1/22/2012 4 Costs: Time or Energy?
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This note was uploaded on 03/21/2012 for the course ENTOMOLOGY 104 taught by Professor Lewis during the Spring '12 term at UC Davis.

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Jan 23 handout - 1/22/2012 Optimal Foraging: EBNS shapes...

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