section2.optimalforaging - Anthrop ol ogy 154B: Pri mate...

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Anthropology 154B: Primate Evolutionary Ecology Section 2: Optimal Foraging Lab Introduction theories by having students forage for candies in tubs of rice. Methods Furthermore, the minimum daily energy requirement is 15 candies. The patch sizes (densities) will remain fixed, for each forager, but the order in which they are encountered will change from forager to forager and will be randomly determined. It is up to each forager to decide how much time to spend in each patch. maximize energy per time (E/T), not total intake. The Procedure (for foragers) You will begin the foraging session by traveling to the first patch. Travel cost (time and energy) will be kept as constant as possible between patches and between foragers. Each of you will follow the same route at a rapid walk (no running!). You will be blindfolded while feeding, but you should uncover your eyes for most efficient inter-patch travel. When you reach a patch, sit down and put on the blindfold. The feeding bout will begin as you stick your hand into the rice. You may forage with only one hand, but once you have found the candy, you may use both hands to unwrap it and feed (you do not actually have to eat the candies). Be careful not searching volume). When you leave the patch, you will travel to the next patch. You are not allowed to return to already foraged patches. The Procedure (for observers) Each forager will be observed by the rest of the class, acting as primatologists, who should record the following data: 1. Beginning time 2. Arrival = time when forager sticks hand into the patch 3. Score = time when forager finds a prey item and takes it from the tub How animals make decisions about foraging has interested biologist s for years. To increase fitness, foragers should demonstrate optimal foraging ability. A series of mathematical models describe
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This note was uploaded on 04/05/2011 for the course ANT 154bn taught by Professor Debello during the Winter '10 term at UC Davis.

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section2.optimalforaging - Anthrop ol ogy 154B: Pri mate...

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