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dc.contributor.authorSteidinger, Brian S.
dc.contributor.authorBever, James D.
dc.identifier.citationBrian S. Steidinger and James D. Bever, "The Coexistence of Hosts with Different Abilities to Discriminate against Cheater Partners: An Evolutionary Game-Theory Approach.," The American Naturalist 183, no. 6 (June 2014): 762-770.en_US
dc.description.abstractEvolutionary theory predicts that mutualisms based on the reciprocal exchange of costly services should be susceptible to exploitation by cheaters. Consistent with theory, both cheating and discrimination against cheaters are ubiquitous features of mutualisms. Several recent studies have confirmed that host species differ in the extent that they are able to discriminate against cheaters, suggesting that cheating may be stabilized by the existence of susceptible hosts (dubbed “givers”). We use an evolutionary game-theoretical approach to demonstrate how discriminating and giver hosts associating with mutualist and cheater partners can coexist. Discriminators drive the proportion of cheaters below a critical threshold, at which point there is no benefit to investing resources into discrimination. This promotes givers, who benefit from mutualists but allow cheater populations to rebound. We then apply this model to the plant-mycorrhizal mutualism and demonstrate it is one mechanism for generating host-specific responses to mycorrhizal fungal species necessary to generate negative plant-soil feedbacks. Our model makes several falsifiable, qualitative predictions for plant-mycorrhizal population dynamics across gradients of soil phosphorus availability and interhost differences in ability to discriminate. Finally, we suggest applications and limitations of the model with regard to coexistence in specific biological systems.en_US
dc.publisherUniversity of Chicago Pressen_US
dc.rights© 2014 by The University of Chicago.en_US
dc.subjectHost sanctionsen_US
dc.subjectPlant-soil feedbacksen_US
dc.subjectSpecies coexistenceen_US
dc.subjectSoil phosphorusen_US
dc.titleThe Coexistence of Hosts with Different Abilities to Discriminate against Cheater Partners: An Evolutionary Game-Theory Approachen_US
kusw.kuauthorBever, James D.
kusw.kudepartmentEcology & Evolutionary Biologyen_US
kusw.oanotesPer SHERPA/RoMEO 7/28/2016: Author's Pre-print: green tick author can archive pre-print (ie pre-refereeing) Author's Post-print: green tick author can archive post-print (ie final draft post-refereeing) Publisher's Version/PDF: green tick author can archive publisher's version/PDF General Conditions:

Deposit of author's pre-print and author's post-print is discouraged On a not-for-profit author's personal website, institutional website, social website or pre-print server immediately On an institutional repository or open access repository after 12 months embargo Publisher's version/PDF may be used in open access repositories only Publisher copyright and source must be acknowledged with set statement Non-commercial use Encouraged to link to publisher version Wellcome Trust and MRC authors may post authors accepted version in PubMed Central/ PubMed Central UK 6 month after publication NIH authors may post authors' own version in PubMed Central for release 12 months after publication RCUK authors may post authors accepted version in an open access repository 6 months or 12 months after publication, as required by the funding agency
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US

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