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Genome-wide evidence for speciation with gene flow in Heliconius butterflies

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dc.audienceComunidad Rosaristaspa
dc.creatorMartin, Simon H.
dc.creatorDasmahapatra, Kanchon K.
dc.creatorNadeau, Nicola J.
dc.creatorSalazar, Camilo
dc.creatorWalters, James R.
dc.creatorSimpson, Fraser
dc.creatorBlaxter, Mark
dc.creatorManica, Andrea
dc.creatorMallet, James
dc.creatorJiggins, Chris D.
dc.creator.googleMartin, Simon H.
dc.creator.googleDasmahapatra, Kanchon K.
dc.creator.googleNadeau, Nicola J.
dc.creator.googleSalazar, Camilo
dc.creator.googleWalters, James R.
dc.creator.googleSimpson, Fraser
dc.creator.googleBlaxter, Mark
dc.creator.googleManica, Andrea
dc.creator.googleMallet, James
dc.creator.googleJiggins, Chris D.
dc.date.accessioned2014-08-13T15:29:32Z
dc.date.available2014-08-13T15:29:32Z
dc.date.created2013-09
dc.date.issued2013
dc.description.abstractMost speciation events probably occur gradually, without complete and immediate reproductive isolation, but the full extent of gene flow between diverging species has rarely been characterized on a genome-wide scale. Documenting the extent and timing of admixture between diverging species can clarify the role of geographic isolation in speciation. Here we use new methodology to quantify admixture at different stages of divergence in Heliconius butterflies, based on whole-genome sequences of 31 individuals. Comparisons between sympatric and allopatric populations of H. melpomene, H. cydno, and H. timareta revealed a genome-wide trend of increased shared variation in sympatry, indicative of pervasive interspecific gene flow. Up to 40% of 100-kb genomic windows clustered by geography rather than by species, demonstrating that a very substantial fraction of the genome has been shared between sympatric species. Analyses of genetic variation shared over different time intervals suggested that admixture between these species has continued since early in speciation. Alleles shared between species during recent time intervals displayed higher levels of linkage disequilibrium than those shared over longer time intervals, suggesting that this admixture took place at multiple points during divergence and is probably ongoing. The signal of admixture was significantly reduced around loci controlling divergent wing patterns, as well as throughout the Z chromosome, consistent with strong selection for Müllerian mimicry and with known Z-linked hybrid incompatibility. Overall these results show that species divergence can occur in the face of persistent and genome-wide admixture over long periods of time.eng
dc.format.mediumRecurso electrónicospa
dc.format.mimetypeapplication/pdf
dc.format.tipoDocumentospa
dc.identifier.issnISSN:10889051
dc.identifier.urihttp://repository.urosario.edu.co/handle/10336/8823
dc.language.isoeng
dc.publisherUniversidad del Rosariospa
dc.relation.citationIssueNo. 11
dc.relation.citationTitleGenome Research
dc.relation.citationVolumeVol. 23
dc.relation.ispartofGenome Research ISSN 10889051 V. 23 N. 11 2013spa
dc.relation.urihttp://genome.cshlp.org/content/23/11/1817.full.pdf
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto completo)spa
dc.rights.licenciaEL AUTOR, manifiesta que la obra objeto de la presente autorización es original y la realizó sin violar o usurpar derechos de autor de terceros, por lo tanto la obra es de exclusiva autoría y tiene la titularidad sobre la misma.spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.ddcEvolución & genética
dc.subject.decsGenomaspa
dc.subject.decsGenesspa
dc.subject.decsGenéticaspa
dc.titleGenome-wide evidence for speciation with gene flow in Heliconius butterfliesspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersion
dc.type.spaArtículospa
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