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Hybrid sterility, Haldane's rule and speciation in Heliconius cydno and H. melpomene

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dc.creatorNaisbit, Russell E.spa
dc.creatorJiggins, Chris Dspa
dc.creatorLinares, Mauriciospa
dc.creatorSalazar, Camilo
dc.creatorMallet, Jamesspa
dc.date.accessioned2020-08-19T14:44:04Z
dc.date.available2020-08-19T14:44:04Z
dc.date.created2002-08-01spa
dc.description.abstractMost genetic studies of Haldane’s rule, in which hybrid sterility or inviability affects the heterogametic sex preferentially, have focused on Drosophila. It therefore remains unclear to what extent the conclusions of that work apply more generally, particularly in female-heterogametic taxa such as birds and Lepidoptera. Here we present a genetic analysis of Haldane’s rule in Heliconius butterflies. Female F1 hybrids between Heliconius melpomene and H. cydno are completely sterile, while males have normal to mildly reduced fertility. In backcrosses of male F1 hybrids, female offspring range from completely sterile to fully fertile. Linkage analysis using the Z-linked triose-phosphate isomerase locus demonstrates a “large X” (Z) effect on sterility. Expression of female sterility varies among crosses in this and a previous study of Heliconius. Sterility may result from the production of normal but infertile eggs, production of small infertile eggs, or from a complete failure to develop ovarioles, which suggests multiple routes to the evolution of hybrid sterility in these Heliconius species. These results conform to the expectations of the “dominance” rather than “faster male” theories of Haldane’s rule and suggest that relatively few loci are responsible. The two species are broadly sympatric and hybridize in the wild, so that female hybrid sterility forms one of several strong but incomplete barriers to gene flow in nature. The effect of female sterility is comparable to that of selection against non-mimetic hybrids, while mate choice forms a much stronger barrier to gene transfer.eng
dc.format.mimetypeapplication/pdf
dc.identifier.issnISSN: 0016-6731
dc.identifier.issnEISSN: 1943-2631
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/27822
dc.language.isoengspa
dc.publisherGenetics Society of Americaspa
dc.relation.citationEndPage1526
dc.relation.citationIssueNo. 4
dc.relation.citationStartPage1517
dc.relation.citationTitleGenetics
dc.relation.citationVolumeVol. 161
dc.relation.ispartofGenetics, ISSN: 0016-6731; EISSN: 1943-2631, Vol.161, No.4 (agosto, 2002); pp. 1517-1526spa
dc.relation.urihttps://www.genetics.org/content/161/4/1517spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.sourceGeneticsspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordHybrid Sterilityspa
dc.subject.keywordHaldane’s Rulespa
dc.subject.keywordSpeciationspa
dc.subject.keywordHeliconius cydnospa
dc.subject.keywordH. melpomenespa
dc.titleHybrid sterility, Haldane's rule and speciation in Heliconius cydno and H. melpomenespa
dc.title.TranslatedTitleEsterilidad híbrida, regla de Haldane y especiación en Heliconius cydno y H. melpomenespa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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