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Rapid homoploid hybrid speciation in British gardens: The origin of Oxford ragwort ( Senecio squalidus )

2020-08Artigo científico Acesso aberto
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dc.contributor.authorNevado, Bruno
dc.contributor.authorHarris, Stephen A.
dc.contributor.authorBeaumont, Mark A.
dc.contributor.authorHiscock, Simon J.
dc.date.accessioned2020-12-14T13:23:36Z
dc.date.available2020-12-14T13:23:36Z
dc.date.issued2020-08
dc.description.abstractHybridisation can lead to homoploid hybrid speciation, i.e., the origin of new species without change in chromosome number between parents and offspring. Central to homoploid hybrid speciation is the role of hybridisation in the establishment of reproductive isolation between the hybrid and the parental species in the early stages of speciation, when typically all species occur at least partly in sympatry. In this work we analyse genome-wide polymorphism data obtained by transcriptome sequencing of the British hybrid species Oxford ragwort (Senecio squalidus, Asteraceae), its two Italian parental species (S. aethnensis and S. chrysanthemifolius) and their naturally occurring hybrids on Mt Etna (Italy). We show that Oxford ragwort most likely originated from de novo hybridisation between its two Italian parental species whilst they were in cultivation in British gardens at the turn of the 18th century. Reproductive isolation between the new hybrid species and its parental species probably resulted from inheritance of genetic incompatibilities between the two parental species and subsequent ecological segregation - both of which have been shown in previous studies. Our results imply that S. squalidus meets the most stringent criteria set forth to identify homoploid hybrid speciation, and call attention to the creative role of hybridisation in responding to novel environmental conditions.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNevado B, Harris SA, Beaumont MA, Hiscock SJ. Rapid homoploid hybrid speciation in British gardens: The origin of Oxford ragwort (Senecio squalidus). Mol Ecol2020;29:4221–4233. https://doi.org/10.1111/mec.15630pt_PT
dc.identifier.doi10.1111/mec.15630pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/45289
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationUniversity of Oxford, Grant/Award Number: 162/091pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectABC analysis,pt_PT
dc.subjectdemographic inference,pt_PT
dc.subjecthomoploid hybrid speciation,pt_PT
dc.subjecthybridisation,pt_PT
dc.subjectOxford ragwort,pt_PT
dc.subjectRNA sequencingpt_PT
dc.titleRapid homoploid hybrid speciation in British gardens: The origin of Oxford ragwort ( Senecio squalidus )pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage4233pt_PT
oaire.citation.issue21pt_PT
oaire.citation.startPage4221pt_PT
oaire.citation.titleMolecular Ecologypt_PT
oaire.citation.volume29pt_PT
person.familyNameSantos de Almeida Nevado
person.givenNameBruno Miguel
person.identifier.ciencia-id9919-6362-425A
person.identifier.orcid0000-0002-9765-2907
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5905009b-5f20-420b-9971-d36dd34ac334
relation.isAuthorOfPublication.latestForDiscovery5905009b-5f20-420b-9971-d36dd34ac334

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