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dc.creatorMartin, Simon H. 
dc.creatorDavey, John W. 
dc.creatorSalazar, Camilo 
dc.creatorJiggins, Chris D 
dc.date.accessioned2020-05-25T23:58:11Z
dc.date.available2020-05-25T23:58:11Z
dc.date.created2019
dc.identifier.issn15449173
dc.identifier.issn15457885
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/22819
dc.description.abstractHybridisation and introgression can dramatically alter the relationships among groups of species, leading to phylogenetic discordance across the genome and between populations. Introgression can also erode species differences over time, but selection against introgression at certain loci acts to maintain postmating species barriers. Theory predicts that species barriers made up of many loci throughout the genome should lead to a broad correlation between introgression and recombination rate, which determines the extent to which selection on deleterious foreign alleles will affect neutral alleles at physically linked loci. Here, we describe the variation in genealogical relationships across the genome among three species of Heliconius butterflies: H. melpomene (mel), H. cydno (cyd), and H. timareta (tim), using whole genomes of 92 individuals, and ask whether this variation can be explained by heterogeneous barriers to introgression. We find that species relationships vary predictably at the chromosomal scale. By quantifying recombination rate and admixture proportions, we then show that rates of introgression are predicted by variation in recombination rate. This implies that species barriers are highly polygenic, with selection acting against introgressed alleles across most of the genome. In addition, long chromosomes, which have lower recombination rates, produce stronger barriers on average than short chromosomes. Finally, we find a consistent difference between two species pairs on either side of the Andes, which suggests differences in the architecture of the species barriers. Our findings illustrate how the combined effects of hybridisation, recombination, and natural selection, acting at multitudes of loci over long periods, can dramatically sculpt the phylogenetic relationships among species. © 2019 Martin et al.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.relation.ispartofPLoS Biology, ISSN:15449173, 15457885, Vol.17, No.2 (2019)
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85061272706&doi=10.1371%2fjournal.pbio.2006288&partnerID=40&md5=1d1b61a6e1f40ebb4edb17af2595698c
dc.titleRecombination rate variation shapes barriers to introgression across butterfly genomes
dc.typearticle
dc.publisherPublic Library of Science
dc.subject.keywordAdult
dc.subject.keywordinsect
dc.subject.keywordinsect
dc.subject.keywordAllele
dc.subject.keywordpopulation
dc.subject.keywordgenetic
dc.subject.keywordgenetic
dc.subject.keywordArticle
dc.subject.keywordButterfly
dc.subject.keywordChromosome
dc.subject.keywordFemale
dc.subject.keywordGenome
dc.subject.keywordHuman
dc.subject.keywordHuman experiment
dc.subject.keywordIntrogression
dc.subject.keywordMajor clinical study
dc.subject.keywordMale
dc.subject.keywordNatural selection
dc.subject.keywordNonhuman
dc.subject.keywordPhylogeny
dc.subject.keywordAnimal
dc.subject.keywordButterfly
dc.subject.keywordGene flow
dc.subject.keywordGenetic recombination
dc.subject.keywordGenetic selection
dc.subject.keywordGenetics
dc.subject.keywordInsect chromosome
dc.subject.keywordInsect genome
dc.subject.keywordPopulation genetics
dc.subject.keywordSpecies difference
dc.subject.keywordAnimals
dc.subject.keywordButterflies
dc.subject.keywordChromosomes
dc.subject.keywordGene flow
dc.subject.keywordGenetics
dc.subject.keywordGenome
dc.subject.keywordPhylogeny
dc.subject.keywordRecombination
dc.subject.keywordSelection
dc.subject.keywordSpecies specificity
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.type.spaArtículo
dc.rights.accesoAbierto (Texto Completo)
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doihttps://doi.org/10.1371/journal.pbio.2006288
dc.relation.citationIssueNo. 2
dc.relation.citationTitlePLoS Biology
dc.relation.citationVolumeVol. 17
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR


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