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| Author | Horrocks, J.A.; Hunte, W. | ||||
| Title | Rank Relations in Vervet Sisters: A Critique of the Role of Reproductive Value | Type | Journal Article | ||
| Year | 1983 | Publication | The American Naturalist | Abbreviated Journal | Am. Nat. |
| Volume | 122 | Issue | Pages | 417-421 | |
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| Notes | 10.1086/284144 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4903 | ||
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| Author | Gittleman, J.L. | ||||
| Title | Carnivore Life History Patterns: Allometric, Phylogenetic, and Ecological Associations | Type | Journal Article | ||
| Year | 1986 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 127 | Issue | 6 | Pages | 744-771 |
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| Publisher | The University of Chicago Press for The American Society of Naturalists | Place of Publication | Editor | ||
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| ISSN | 0003-0147 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5453 | ||
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| Author | Gosden, T. P.; Svensson, E. I. | ||||
| Title | Density-Dependent Male Mating Harassment, Female Resistance, and Male Mimicry | Type | Journal Article | ||
| Year | 2009 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 173 | Issue | 6 | Pages | 709-721 |
| Keywords | tolerance, sexual conflict, path analysis, mating behavior, polymorphism, fecundity. | ||||
| Abstract |
Abstract: Genetic variation in female resistance and tolerance to male mating harassment can affect the outcome of sexually antagonistic mating interactions. We investigated female mating rates and male mating harassment in natural populations of a damselfly (Ischnura elegans). This damselfly species has a heritable sex‐limited polymorphism in females, where one of the morphs is a male mimic (androchrome females). The three female morphs differ in mating rates, and these differences are stable across populations and years. However, the degree of premating resistance toward male mating attempts varied across generations and populations. Male mating harassment of the female morphs changed in a density‐dependent fashion, suggesting that male mate preferences are plastic and vary with the different morph densities. We quantified morph differences in male mating harassment and female fecundity, using path analysis and structural equation modeling. We found variation between the morphs in the fitness consequences of mating, with the fecundity of one of the nonmimetic morphs declining with increasing male mating harassment. However, androchrome females had lower overall fecundity, presumably reflecting a cost of male mimicry. Density‐dependent male mating harassment on the morphs and fecundity costs of male mimicry are thus likely to contribute to the maintenance of this female polymorphism. |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4999 | ||
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| Author | Dubois, F.; Giraldeau, L.-A. | ||||
| Title | The forager's dilemma: food sharing and food defense as risk-sensitive foraging options | Type | Journal Article | ||
| Year | 2003 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 162 | Issue | 6 | Pages | 768-779 |
| Keywords | Animals; Competitive Behavior/*physiology; *Environment; Feeding Behavior/*physiology; *Game Theory; *Models, Biological; Population Density; Population Dynamics | ||||
| Abstract |
Although many variants of the hawk-dove game predict the frequency at which group foraging animals should compete aggressively, none of them can explain why a large number of group foraging animals share food clumps without any overt aggression. One reason for this shortcoming is that hawk-dove games typically consider only a single contest, while most group foraging situations involve opponents that interact repeatedly over discovered food clumps. The present iterated hawk-dove game predicts that in situations that are analogous to a prisoner's dilemma, animals should share the resources without aggression, provided that the number of simultaneously available food clumps is sufficiently large and the number of competitors is relatively small. However, given that the expected gain of an aggressive animal is more variable than the gain expected by nonaggressive individuals, the predicted effect of the number of food items in a clump-clump richness-depends on whether only the mean or both the mean and variability associated with payoffs are considered. More precisely, the deterministic game predicts that aggression should increase with clump richness, whereas the stochastic risk-sensitive game predicts that the frequency of encounters resulting in aggression should peak at intermediate clump richnesses or decrease with increasing clump richness if animals show sensitivity to the variance or coefficient of variation, respectively. | ||||
| Address | Departement des Sciences Biologiques, Universite du Quebec a Montreal, Case postale 8888, Succursale Centre-Ville, Montreal, Quebec H3C 3P8, Canada. fdubois@u-bourgogne.fr | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0003-0147 | ISBN | Medium | ||
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| Notes | PMID:14737714 | Approved | no | ||
| Call Number | Serial | 2132 | |||
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| Author | Flack, J.C.; de Waal, F.B.M.; Krakauer, D.C. | ||||
| Title | Social structure, robustness, and policing cost in a cognitively sophisticated species | Type | Journal Article | ||
| Year | 2005 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 165 | Issue | 5 | Pages | E126-139 |
| Keywords | Animals; *Behavior, Animal; Cognition; Conflict (Psychology); Female; Macaca nemestrina/*physiology; Male; Models, Biological; *Social Behavior | ||||
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Conflict management is one of the primary requirements for social complexity. Of the many forms of conflict management, one of the rarest and most interesting is third-party policing, or intervening impartially to control conflict. Third-party policing should be hard to evolve because policers personally pay a cost for intervening, while the benefits are diffused over the whole group. In this study we investigate the incidence and costs of policing in a primate society. We report quantitative evidence of non-kin policing in the nonhuman primate, the pigtailed macaque. We find that policing is effective at reducing the intensity of or terminating conflict when performed by the most powerful individuals. We define a measure, social power consensus, that predicts effective low-cost interventions by powerful individuals and ineffective, relatively costly interventions by low-power individuals. Finally, we develop a simple probabilistic model to explore whether the degree to which policing can effectively reduce the societal cost of conflict is dependent on variance in the distribution of power. Our data and simple model suggest that third-party policing effectiveness and cost are dependent on power structure and might emerge only in societies with high variance in power. | ||||
| Address | Santa Fe Institute, Santa Fe, New Mexico 87501, USA. jflack@santafe.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1537-5323 | ISBN | Medium | ||
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| Notes | PMID:15795848 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 168 | ||
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| Author | Gardner, A., West, S. A. | ||||
| Title | Cooperation and Punishment, Especially in Humans | Type | Journal Article | ||
| Year | 2004 | Publication | The American Naturalist | Abbreviated Journal | Americ. Natur. |
| Volume | 164 | Issue | 6 | Pages | 753-764 |
| Keywords | kin selection, neighbor-modulated fitness, repression of | ||||
| Abstract |
Explaining altruistic cooperation is one of the greatest challenges faced by sociologists, economists, and evolutionary biologists. The problem is determining why an individual would carry out a costly behavior that benefits another. Possible solutions to this problem include kinship, repeated interactions, and policing. Another solution that has recently received much attention is the threat of punishment. However, punishing behavior is often costly for the punisher, and so it is not immediately clear how costly punishment could evolve. We use a direct (neighbor-modulated) fitness approach to analyze when punishment is favored. This methodology reveals that, contrary to previous suggestions, relatedness between interacting individuals is not crucial to explaining cooperation through punishment. In fact, increasing relatedness directly disfavors punishing behavior. Instead, the crucial factor is a positive correlation between the punishment strategy of an individual and the cooperation it receives. This could arise in several ways, such as when facultative adjustment of behavior leads individuals to cooperate more when interacting with individuals who are more likely to punish. More generally, our results provide a clear example of how the fundamental factor driving the evolution of social traits is a correlation between social partners and how this can arise for reasons other than genealogical kinship. |
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| Address | University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 341 | ||
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| Author | Dubois, F.; Giraldeau, L.-A.; Hamilton, I.M.; Grant, J.W.A.; Lefebvre, L. | ||||
| Title | Distraction sneakers decrease the expected level of aggression within groups: a game-theoretic model | Type | Journal Article | ||
| Year | 2004 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 164 | Issue | 2 | Pages | E32-45 |
| Keywords | *Aggression; Animals; Behavior, Animal/*physiology; Columbidae/*physiology; Competitive Behavior; Cooperative Behavior; *Game Theory; Hawks/*physiology; Models, Biological | ||||
| Abstract |
Hawk-dove games have been extensively used to predict the conditions under which group-living animals should defend their resources against potential usurpers. Typically, game-theoretic models on aggression consider that resource defense may entail energetic and injury costs. However, intruders may also take advantage of owners who are busy fighting to sneak access to unguarded resources, imposing thereby an additional cost on the use of the escalated hawk strategy. In this article we modify the two-strategy hawk-dove game into a three-strategy hawk-dove-sneaker game that incorporates a distraction-sneaking tactic, allowing us to explore its consequences on the expected level of aggression within groups. Our model predicts a lower proportion of hawks and hence lower frequencies of aggressive interactions within groups than do previous two-strategy hawk-dove games. The extent to which distraction sneakers decrease the frequency of aggression within groups, however, depends on whether they search only for opportunities to join resources uncovered by other group members or for both unchallenged resources and opportunities to usurp. | ||||
| Address | Departement des Sciences Biologiques, Universite du Quebec a Montreal, Case postale 8888 Succursale Centre-Ville, Montreal, Quebec H3C 3P8, Canada. frede_dubois@yahoo.fr | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1537-5323 | ISBN | Medium | ||
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| Notes | PMID:15278850 | Approved | no | ||
| Call Number | Serial | 2130 | |||
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| Author | Uehara, T.; Yokomizo, H.; Iwasa, Y. | ||||
| Title | Mate-choice copying as Bayesian decision making | Type | Journal Article | ||
| Year | 2005 | Publication | The American naturalist | Abbreviated Journal | Am Nat |
| Volume | 165 | Issue | 3 | Pages | 403-410 |
| Keywords | Animals; *Bayes Theorem; *Choice Behavior; Female; Male; *Models, Biological; *Sexual Behavior, Animal | ||||
| Abstract |
Mate-choice copying by females has been reported in fishes (e.g., guppies) and lekking birds. Presumably, females assess males' quality using both information from direct observation of males and information acquired by observing other females' choices. Here, we study mathematically the conditions under which mate-choice copying is advantageous on the basis of Bayesian decision theory. A female may observe the mate choice of another female, called the model female, who has performed an optimal choice based on her own judgment. The conditions required for the focal female to choose the same mate as that chosen by the model female should depend on the male's appearance to her, the reliability of her own judgment of male quality, and the reliability of the model females. When three or more females are involved, the optimal mate choice critically depends on whether multiple model females make decisions independently or they themselves copy the choices of others. If two equally reliable females choose different males, the choice of the second female, made knowing the choice of the first, should have a stronger effect on the choice of the third (focal) female. This “last-choice precedence” should be tested experimentally. | ||||
| Address | Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 812-8581, Japan. uehara@bio-math.biology.kyushu-u.ac.jp | ||||
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| ISSN | 1537-5323 | ISBN | Medium | ||
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| Notes | PMID:15729669 | Approved | no | ||
| Call Number | Serial | 1821 | |||
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| Author | Detto, T.; Jennions, M. D.; Backwell, P. R. Y. | ||||
| Title | When and Why Do Territorial Coalitions Occur? Experimental Evidence from a Fiddler Crab | Type | Journal Article | ||
| Year | 2010 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 175 | Issue | 5 | Pages | E119-E125 |
| Keywords | coalitions, cooperation, dear enemy, fiddler crabs, fighting, territoriality. | ||||
| Abstract |
Neighboring territory owners are often less aggressive toward each other than to strangers (“dear enemy” effect). There is, however, little evidence for territorial defense coalitions whereby a neighbor will temporarily leave his/her own territory, enter that of a neighbor, and cooperate in repelling a conspecific intruder. This is surprising, as theoreticians have long posited the existence of such coalitions and the circumstances under which they should evolve. Here we document territorial defense coalitions in the African fiddler crab Uca annulipes, which lives in large colonies wherein each male defends a burrow and its surrounding area against neighbors and “floaters” (burrowless males). Fights between a resident and a floater sometimes involve another male who has left his territory to fight the floater challenging his neighbor. Using simple experiments, we provide the first evidence of the rules determining when territorial coalitions form. Our results support recent models that suggest that these coalitions arise from by‐product mutualism. | ||||
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| Notes | doi: 10.1086/651588 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 5112 | ||
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| Author | Conradt, L.; Krause, J.; Couzin, I. D.; Roper, T. J. | ||||
| Title | “Leading According to Need” in Self-Organizing Groups | Type | Journal Article | ||
| Year | 2009 | Publication | The American Naturalist | Abbreviated Journal | Am Nat |
| Volume | 173 | Issue | 3 | Pages | 304-312 |
| Keywords | behavioral synchrony, collective group decisions, democracy and egalitarianism in animals, public goods experiments, sexual segregation, social choice theory | ||||
| Abstract |
Self‐organizing‐system approaches have shed significant light on the mechanisms underlying synchronized movements by large groups of animals, such as shoals of fish, flocks of birds, or herds of ungulates. However, these approaches rarely consider conflicts of interest between group members, although there is reason to suppose that such conflicts are commonplace. Here, we demonstrate that, where conflicts exist, individual members of self‐organizing groups can, in principle, increase their influence on group movement destination by strategically changing simple behavioral parameters (namely, movement speed, assertiveness, and social attraction range). However, they do so at the expense of an increased risk of group fragmentation and a decrease in movement efficiency. We argue that the resulting trade‐offs faced by each group member render it likely that group movements are led by those members for which reaching a particular destination is most crucial or group cohesion is least important. We term this phenomenon leading according to “need” or “social indifference,” respectively. Both kinds of leading can occur in the absence of knowledge of or communication about the needs of other group members and without the assumption of altruistic cooperation. We discuss our findings in the light of observations on fish and other vertebrates. | ||||
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| Call Number | Equine Behaviour @ team @ | Serial | 5121 | ||
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