A foraging problem: Sit-and-wait versus active predation

A foraging problem: Sit-and-wait versus active predation

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Article ID: iaor20108527
Volume: 208
Issue: 2
Start Page Number: 131
End Page Number: 141
Publication Date: Jan 2011
Journal: European Journal of Operational Research
Authors: , ,
Keywords: search
Abstract:

The literature on foraging shows that some predators use a combination of ambush and active search to locate a prey. Let us suppose that a prey must go every day to some determined places to feed, and to another place, 0, to drink. A predator can stay at zone 0 waiting for the prey (sit-and-wait strategy) or it can move between the different places where the prey will go to eat (search strategy). If predator and prey meet each other in the same place, prey will be caught with a probability depending on the place. We study this problem in different situations, modelling them as two-person zero-sum games. We solve them in closed form, giving optimal strategies for prey and for predator and the value of the games.

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