When optimal foragers meet in a game theoretical conflict: A model of kleptoparasitism

摘要: Kleptoparasitism can be considered as a game theoretical problem and foraging tactic at the same time, so aim of this paper is to combine basic ideas two research lines: evolutionary theory optimal theory. To unify these theories, firstly, we take into account fact that kleptoparasitism between foragers has consequences: interaction takes time affects net energy intake both contestants. This phenomenon modeled by matrix under constraints. Secondly, also give freedom each forager avoid interactions, since in ignore food type (we have prey types: either item possession another predator or free individual discovered). The main question present whether zero-one rule (always never select type) valid not, case where interact with other? In our consider predators who engage contests (contestants) those do (avoiders), general play mixture strategies. Here classical does not hold. Firstly, pure avoider phenotype an ESS. contestant strict ESS, but show necessarily so. Thirdly, example when there mixed