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Competition and phylogeny determine community structure in Mullerian co-mimics

dc.contributor.authorAlexandrou, Markos A.
dc.contributor.authorOliveira, Claudio [UNESP]
dc.contributor.authorMaillard, Marjorie
dc.contributor.authorMcGill, Rona A. R.
dc.contributor.authorNewton, Jason
dc.contributor.authorCreer, Simon
dc.contributor.authorTaylor, Martin I.
dc.contributor.institutionBangor Univ
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionScottish Univ Environm Res Ctr
dc.date.accessioned2014-05-20T13:52:02Z
dc.date.available2014-05-20T13:52:02Z
dc.date.issued2011-01-06
dc.description.abstractUntil recently, the study of negative and antagonistic interactions (for example, competition and predation) has dominated our understanding of community structure, maintenance and assembly(1). Nevertheless, a recent theoretical model suggests that positive interactions (for example, mutualisms) may counterbalance competition, facilitating long-term coexistence even among ecologically undifferentiated species(2). Mullerian mimics are mutualists that share the costs of predator education(3) and are therefore ideally suited for the investigation of positive and negative interactions in community dynamics. The sole empirical test of this model in a Mullerian mimetic community supports the prediction that positive interactions outweigh the negative effects of spatial overlap(4) (without quantifying resource acquisition). Understanding the role of trophic niche partitioning in facilitating the evolution and stability of Mullerian mimetic communities is now of critical importance, but has yet to be formally investigated. Here we show that resource partitioning and phylogeny determine community structure and outweigh the positive effects of Mullerian mimicry in a species-rich group of neotropical catfishes. From multiple, independent reproductively isolated allopatric communities displaying convergently evolved colour patterns, 92% consist of species that do not compete for resources. Significant differences in phylogenetically conserved traits (snout morphology and body size) were consistently linked to trait-specific resource acquisition. Thus, we report the first evidence, to our knowledge, that competition for trophic resources and phylogeny are pivotal factors in the stable evolution of Mullerian mimicry rings. More generally, our work demonstrates that competition for resources is likely to have a dominant role in the structuring of communities that are simultaneously subject to the effects of both positive and negative interactions.en
dc.description.affiliationBangor Univ, Coll Nat Sci, Sch Biol Sci, Mol Ecol & Fisheries Genet Lab,Environm Ctr Wales, Bangor LL57 2UW, Gwynedd, Wales
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Morfol, BR-18618970 Botucatu, SP, Brazil
dc.description.affiliationScottish Univ Environm Res Ctr, NERC Life Sci Mass Spectrometry Facil, E Kilbride G75 0QF, Lanark, Scotland
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Morfol, BR-18618970 Botucatu, SP, Brazil
dc.description.sponsorshipNERC
dc.description.sponsorshipUNESP, Brazil
dc.description.sponsorshipIdNERC: NE/C001168/1
dc.description.sponsorshipIdNERC: NE/F007205/1
dc.format.extent84-U97
dc.identifierhttp://dx.doi.org/10.1038/nature09660
dc.identifier.citationNature. London: Nature Publishing Group, v. 469, n. 7328, p. 84-U97, 2011.
dc.identifier.doi10.1038/nature09660
dc.identifier.issn0028-0836
dc.identifier.urihttp://hdl.handle.net/11449/18591
dc.identifier.wosWOS:000285921600036
dc.language.isoeng
dc.publisherNature Publishing Group
dc.relation.ispartofNature
dc.relation.ispartofjcr41.577
dc.relation.ispartofsjr17,875
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleCompetition and phylogeny determine community structure in Mullerian co-mimicsen
dc.typeArtigo
dcterms.licensehttp://www.nature.com/authors/author_resources/deposition.html
dcterms.rightsHolderNature Publishing Group
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Botucatupt
unesp.departmentMorfologia - IBBpt

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