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Dugatkin, L.A.; Mesterton-Gibbons, M.; Houston, A.I. |
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Beyond the prisoner's dilemma: Toward models to discriminate among mechanisms of cooperation in nature |
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1992 |
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Trends Evol. Ecol. |
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7 |
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202-205 |
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The iterated prisoner's dilemma game, or IPD, has now established itself as the orthodox paradigm for theoretical investigations of the evolution of cooperation; but its scope is restricted to reciprocity, which is only one of three categories of cooperation among unrelated individuals. Even within that category, a cooperative encounter has in general three phases, and the IPD has nothing to say about two of them. To distinguish among mechanisms of cooperation in nature, future theoretical work on the evolution of cooperation must distance itself from economics and develop games as a refinement of ethology's comparative approach. |
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10.1016/0169-5347(92)90074-L |
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Equine Behaviour @ team @ |
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4843 |
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Kacelnik, A.; Houston, A.I. |
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Title |
Some effects of energy costs on foraging strategies |
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1984 |
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Animal Behaviour. |
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Anim. Behav. |
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32 |
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2 |
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609-614 |
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We consider the effect of including energy costs on the optimal strategy for animals exploiting a depleting food resource. In the context of central place foraging this leads to the problem of what load size should be brought back to the central place. Two strategies are discussed: (i) maximize gross rate of energy delivery and (ii) maximize net rate of energy delivery. The optimal load size (or optimal patch time) for net maximizers is not always larger than for gross maximizers, as has been claimed. Instead, the difference in optimal load size has the same sign as the difference between metabolic rates of travelling and foraging. We point out that the influence of costs has not always been correctly incorporated in experimental tests of the theory. |
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2122 |
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Houston, A.I.; McNamara, J.M. |
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Fighting for food: a dynamic version of the Hawk-Dove game |
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1988 |
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Evolutionary Ecology |
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Evol. Ecol. |
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2 |
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1 |
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51-64 |
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refbase @ user @ |
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750 |
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