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Sharp genetic discontinuity across a unimodal Heliconius hybrid zone

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dc.creatorArias, Carlos F.spa
dc.creatorRosales, Claudiaspa
dc.creatorSalazar, Camilo
dc.creatorCastaño, Jullyspa
dc.creatorBermingham, Eldredgespa
dc.creatorLinares, Mauriciospa
dc.creatorMcMillan, W. O.spa
dc.date.accessioned2020-05-25T23:57:07Z
dc.date.available2020-05-25T23:57:07Z
dc.date.created2012spa
dc.description.abstractHybrid zones are powerful natural systems to study evolutionary processes to gain an understanding of adaptation and speciation. In the Cauca Valley (Colombia), two butterfly races, Heliconius cydno cydnides and Heliconius cydno weymeri, meet and hybridize. We characterized this hybrid zone using a combination of mitochondrial DNA (mtDNA) sequences, amplified fragment length polymorphisms (AFLPs), microsatellites and sequences for nuclear loci within and outside of the genomic regions that cause differences in wing colour pattern. The hybrid zone is largely composed of individuals of mixed ancestry. However, there is strong genetic discontinuity between the hybridizing races in mtDNA and, to a lesser extent, in all nuclear markers surveyed. The mtDNA clustering of H. c. cydnides with the H. cydno race from the Magdalena Valley and H. c. weymeri with the H. cydno race from the pacific coast suggests that H. c. cydnides colonized the Cauca Valley from the north, whereas H. c. weymeri did so by crossing the Andes in the southern part, implying a secondary contact origin. Colonization of the valley by H. cydno was accompanied by mimicry shift. Strong ecological isolation, driven by locally adaptive differences in mimetic wing patterns, is playing an important role in maintaining the hybrid zone. However, selection on wing pattern alone is not sufficient to explain the genetic discontinuity observed. There is evidence for differences in male mating preference, but the contribution of additional barriers needs further investigation. Overall, our results support the idea that speciation is a cumulative process, where the combination of multiple isolation barriers, combined with major phenotypic differences, facilitates population divergence in face of gene flow. See also the Perspective by Mallet and Dasmahapatra © 2012 Blackwell Publishing Ltd.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1111/j.1365-294X.2012.05746.x
dc.identifier.issn1365294X
dc.identifier.issn09621083
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/22609
dc.language.isoengspa
dc.relation.citationEndPage5794
dc.relation.citationIssueNo. 23
dc.relation.citationStartPage5778
dc.relation.citationTitleMolecular Ecology
dc.relation.citationVolumeVol. 21
dc.relation.ispartofMolecular Ecology, ISSN:1365294X, 09621083, Vol.21, No.23 (2012); pp. 5778-5794spa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84870251851&doi=10.1111%2fj.1365-294X.2012.05746.x&partnerID=40&md5=53ce2290804c2771e547d7a2b90878f0spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.keywordMicrosatellite DNAspa
dc.subject.keywordPopulationeng
dc.subject.keywordMitochondrial DNAspa
dc.subject.keywordAnimaleng
dc.subject.keywordGeneticeng
dc.subject.keywordMitochondrialeng
dc.subject.keywordAmplified fragment length polymorphismspa
dc.subject.keywordAnimalspa
dc.subject.keywordArticlespa
dc.subject.keywordButterflyspa
dc.subject.keywordChimeraspa
dc.subject.keywordColombiaspa
dc.subject.keywordFemalespa
dc.subject.keywordForelimbspa
dc.subject.keywordGenetic selectionspa
dc.subject.keywordGenetic variabilityspa
dc.subject.keywordGeneticsspa
dc.subject.keywordMalespa
dc.subject.keywordPigmentationspa
dc.subject.keywordPopulation geneticsspa
dc.subject.keywordSexual behaviorspa
dc.subject.keywordSpecies differentiationspa
dc.subject.keywordAmplified Fragment Length Polymorphism Analysisspa
dc.subject.keywordAnimalsspa
dc.subject.keywordButterfliesspa
dc.subject.keywordChimeraspa
dc.subject.keywordColombiaspa
dc.subject.keywordDNAeng
dc.subject.keywordFemalespa
dc.subject.keywordGenetic Speciationspa
dc.subject.keywordGenetic Variationspa
dc.subject.keywordGeneticseng
dc.subject.keywordMalespa
dc.subject.keywordMicrosatellite Repeatsspa
dc.subject.keywordPigmentationspa
dc.subject.keywordSelectioneng
dc.subject.keywordSexual Behavioreng
dc.subject.keywordWingspa
dc.subject.keywordHeliconiusspa
dc.subject.keywordHeliconius cydnospa
dc.subject.keywordHeliconius cydno weymerispa
dc.subject.keywordAflpsspa
dc.subject.keywordColour patternspa
dc.subject.keywordHeliconiusspa
dc.subject.keywordHybrid zonespa
dc.subject.keywordMicrosatellitesspa
dc.subject.keywordMtdnaspa
dc.subject.keywordSecondary contactspa
dc.subject.keywordSpeciationspa
dc.titleSharp genetic discontinuity across a unimodal Heliconius hybrid zonespa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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