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Dugatkin, L.A.; Mesterton-Gibbons, M. |
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Title |
Cooperation among unrelated individuals: reciprocal altruism, by-product mutualism and group selection in fishes |
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1996 |
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Biosystems |
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Biosystems |
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37 |
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1-2 |
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19-30 |
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By-product mutualism; Cooperative behavior; Fish; Reciprocal altruism; Trait-group selection |
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Cooperation among unrelated individuals can evolve not only via reciprocal altruism but also via trait-group selection or by-product mutualism (or some combination of all three categories). Therefore the (iterated) prisoner's dilemma is an insufficient paradigm for studying the evolution of cooperation. We replace this game by the cooperator's dilemma, which is more versatile because it enables all three categories of cooperative behavior to be examined within the framework of a single theory. Controlled studies of cooperation among fish provide examples of each category of cooperation. Specifically, we describe reciprocal altruism among simultaneous hermaphrodites that swap egg parcels, group-selected cooperation among fish that inspect dangerous predators and by-product mutualism in the cooperative foraging of coral-reef fish. |
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481 |
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Dugatkin, L.A.; Mesterton-Gibbons, M.; Houston, A.I. |
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Title |
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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Mesterton-Gibbons, M.; Dugatkin, L.A. |
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Title |
Cooperation and the Prisoner's Dilemma: towards testable models of mutualism versus reciprocity |
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1997 |
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Animal Behaviour. |
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Anim. Behav. |
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54 |
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3 |
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551-557 |
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For the purpose of distinguishing between mutualism and reciprocity in nature, recent work on the evolution of cooperation has both oversimplifed and undersimplified the distinction between these two categories of cooperation. This article addresses the resulting issues of model testability, clarifies the role of time and argues that the category of `pseudo-reciprocity' is an unnecessary complication. |
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480 |
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Mesterton-Gibbons, M.; Dugatkin, L.A. |
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Toward a theory of dominance hierarchies: effects of assessment, group size, and variation in fighting ability |
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1995 |
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Behavioral Ecology |
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Behav. Ecol. |
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6 |
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4 |
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416-423 |
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We introduce assessment to the analysis of dominance hierarchies by exploring the effect of an evolutionarily stable fighting rule when there is variation in resource holding potential (RHP) and RHP is not a perfectly reliable predictor of the outcome of a fight. With assessment, the probability of a linear hierarchy decreases with group size but can remain appreciable for groups of up to seven or eight individuals, whereas it decreases virtually to zero if there is no assessment. The probability of a hierarchy that correlates perfectly with RHP is low unless group size is small. |
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10.1093/beheco/6.4.416 |
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refbase @ user @ |
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447 |
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Mesterton-Gibbons, M.; Gavrilets, S.; Gravner, J.; Akçay, E. |
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Title |
Models of coalition or alliance formation |
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2011 |
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Journal of Theoretical Biology |
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J. Theor. Biol. |
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274 |
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1 |
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187-204 |
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Game theory; Cooperation |
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More than half a century has now elapsed since coalition or alliance formation theory (CAFT) was first developed. During that time, researchers have amassed a vast amount of detailed and high-quality data on coalitions or alliances among primates and other animals. But models have not kept pace, and more relevant theory is needed. In particular, even though CAFT is primarily an exercise in polyadic game theory, game theorists have devoted relatively little attention to questions that motivate field research, and much remains largely unexplored. The state of the art is both a challenge and an opportunity. In this review we describe a variety of game-theoretic and related modelling approaches that have much untapped potential to address the questions that field biologists ask. |
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0022-5193 |
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Equine Behaviour @ team @ |
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5322 |
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