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| Author |
Wilson, D.S.; Dugatkin, L.A. |
| Title |
A reply to Lombardi & Hurlbert |
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Journal Article |
| Year |
1996 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
52 |
Issue |
2 |
Pages |
423-425 |
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475 |
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| Author |
R. A. Hopkins |
| Title |
CALIFORNIA WILDLIFE HABITAT RELATIONSHIPS SYSTEM |
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M174 |
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Feral Horse Equus caballus |
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476 |
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| Author |
Nicol, C.J |
| Title |
Equine Stereotypies. In: Houpt K.A. (Ed.), |
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Book Chapter |
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2000 |
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Recent Advances in Companion Animal Behavior Problems |
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International Veterinary Information Service |
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477 |
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| Author |
Dugatkin, L.A.; Wilson, D.S. |
| Title |
Choice experiments and cognition: a reply to Lamprecht & Hofer |
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Journal Article |
| Year |
1994 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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47 |
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6 |
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1459-1461 |
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479 |
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| Author |
Mesterton-Gibbons, M.; Dugatkin, L.A. |
| Title |
Cooperation and the Prisoner's Dilemma: towards testable models of mutualism versus reciprocity |
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Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
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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| Author |
Dugatkin, L.A.; Mesterton-Gibbons, M. |
| Title |
Cooperation among unrelated individuals: reciprocal altruism, by-product mutualism and group selection in fishes |
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Journal Article |
| Year |
1996 |
Publication |
Biosystems |
Abbreviated Journal |
Biosystems |
| Volume |
37 |
Issue |
1-2 |
Pages |
19-30 |
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By-product mutualism; Cooperative behavior; Fish; Reciprocal altruism; Trait-group selection |
| Abstract |
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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| Author |
Dugatkin, L.A.; Hoglund, J. |
| Title |
Delayed breeding and the evolution of mate copying in lekking species |
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Journal Article |
| Year |
1995 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
| Volume |
174 |
Issue |
3 |
Pages |
261-267 |
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Recent experimental evidence indicates that females may copy the mate choice of others. Here, we present a model for the evolution of mate copying strategies in lekking species. In the model, all females (copiers and non-copiers) assess male quality, but a copier's assessment of a male's quality increases after males have mated with other females. The model demonstrates that mate copying is favored when breeding late in the season has a relatively high cost. We hope that our results will spur empirical work quantifying the time constraints associated with breeding, thus allowing more direct tests of the model's predictions. |
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no |
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refbase @ user @ |
Serial |
482 |
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| Author |
Crowley, P.H.; Provencher, L.; Sloane, S.; Dugatkin, L.A.; Spohn, B.; Rogers, L.; Alfieri, M. |
| Title |
Evolving cooperation: the role of individual recognition |
Type |
Journal Article |
| Year |
1996 |
Publication |
Biosystems |
Abbreviated Journal |
Biosystems |
| Volume |
37 |
Issue |
1-2 |
Pages |
49-66 |
| Keywords |
Game theory; Genetic algorithms; Individual recognition; Iterated Prisoner's Dilemma; Reciprocal altruism |
| Abstract |
To evaluate the role of individual recognition in the evolution of cooperation, we formulated and analyzed a genetic algorithm model (EvCo) for playing the Iterated Prisoner's Dilemma (IPD) game. Strategies compete against each other during each generation, and successful strategies contribute more of their attributes to the next generation. Each strategy is encoded on a `chromosome' that plays the IPD, responding to the sequences of most recent responses by the interacting individuals (chromosomes). The analysis reported in this paper considered different memory capabilities (one to five previous interactions), pairing continuities (pairs of individuals remain together for about one, two, five, or 1000 consecutive interactions), and types of individual recognition (recognition capability was maximal, nil, or allowed to evolve between these limits). Analysis of the results focused on the frequency of mutual cooperation in pairwise interactions (a good indicator of overall success in the IPD) and on the extent to which previous responses by the focal individual and its partner were associated with the partner's identity (individual recognition). Results indicated that a fixed, substantial amount of individual recognition could maintain high levels of mutual cooperation even at low pairing continuities, and a significant but limited capability for individual recognition evolved under selection. Recognition generally increased mutual cooperation more when the recent responses of individuals other than the current partner were ignored. Titrating recognition memory under selection using a fitness cost suggested that memory of the partner's previous responses was more valuable than memory of the focal's previous responses. The dynamics produced to date by EvCo are a step toward understanding the evolution of social networks, for which additional benefits associated with group interactions must be incorporated. |
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483 |
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| Author |
Lafleur, D.L.; Lozano, G.A.; Sclafani, M. |
| Title |
Female mate-choice copying in guppies,Poecilia reticulata: a re-evaluation |
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Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
54 |
Issue |
3 |
Pages |
579-586 |
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It has been argued that intraspecific mate-choice copying can be adaptive under certain conditions. Dugatkin's (1992,Am. Nat.139, 1384-1389) work with guppies,Poecilia reticulataremains the most influential experimental demonstration of this phenomenon. We replicated Dugatkin's work using several choice criteria to ensure that our results were not dependent upon any single method of judging mate choice. We also tested our findings against two null hypotheses of differing stringency. Irrespective of the choice criteria or null hypothesis used, we did not observe any relationship between female mate choice and copying. We conclude that further experimental evidence of female mate-choice copying is required before the existence of this behaviour can be affirmed. |
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484 |
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| Author |
Czaran, T. |
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Game theory and evolutionary ecology: Evolutionary Games & Population Dynamics by J. Hofbauer and K. Sigmund, and Game Theory & Animal Behaviour, edited by L.A. Dugatkin and H.K. Reeve |
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Journal Article |
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1999 |
Publication |
Trends in Ecology & Evolution |
Abbreviated Journal |
Trends. Ecol. Evol |
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14 |
Issue |
6 |
Pages |
246-247 |
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Game theory; Evolutionary ecology; Population dynamics; Ethology |
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