EEB324H1 Study Guide - Final Guide: Woodlouse, Ideal Free Distribution, Secondary Metabolite
7 Apr 2015
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Document Summary
Search time and handling time depends on characteristics of both predator and prey. Hollings disc equation: the number of prey taken per unit time depends on their abundance and handling time. Describes the ideal state, making it a null model. Assumptions: prey distributed in patches that vary, all predators of equal competitive ability, predators move freely among patches without cost, capture rates declines with increasing numbers of predators per patch, handling time short relative to search time. Predictions: input matching rule: the number of predators/patch is proportional to prey supply, equal capture rates: average capture rates are equal in all patches, all predators achieve equal capture rate regardless of patch. The size of the worm taken is smaller than the one that is most abundant , but it is the one with the greatest profitability- calories gained per unit handling time. Optimal diet= the one that maximizes energy intake (the prey types whose profitability equal or exceed current intake)
