Afficher la notice abrégée

Species relative abundance and direction of introgression in oaks

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLEPAIS, Olivier
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPETIT, Remy
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGUICHOUX, Erwan
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLAVABRE, J. E.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorALBERTO, Florian
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorKREMER, Antoine
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGERBER, Sophie
dc.date.accessioned2022-10-12T12:43:45Z
dc.date.available2022-10-12T12:43:45Z
dc.date.issued2009
dc.identifier.issn0962-1083
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157151
dc.description.abstractEnSuccessful hybridisation and subsequent introgression lead to the transfer of genetic material across species boundaries. In this process, species relative abundance can play a significant role. If one species is less abundant than the other, its females will receive many heterospecific gametes, increasing mate-recognition errors and thus hybridisation rate. Moreover, first-generation hybrids will also more likely mate with the more abundant species, leading to asymmetric introgression. These predictions have important fundamental consequences, especially during biological invasions or when a rare species threatened by extinction is surrounded by individuals from a related species. However, experimental tests in nature of the importance of the relative abundance of each species on hybridisation dynamics remain scarce. We assess here the impact of species relative abundance on hybridisation dynamics among four species from the European white oak species complex. A total of 2107 oak trees were genotyped at 10 microsatellite markers and Bayesian clustering methods were used to identify reference trees of each species. We then used these reference trees to simulate purebred and hybrid genotypes to determine optimal threshold for genetic assignment. With this approach, we found widespread evidence of hybridisation between all studied oak species, with high occurrence of hybrids, varying from 11% to 31% according to stand and sampling strategies. This finding suggests that hybridisation is a common phenomenon that plays a significant role in evolution of this oak species complex. In addition, we demonstrate a strong impact of species abundance on both hybridisation rate and introgression directionality.
dc.language.isoen
dc.publisherWiley
dc.subjectQUERCUS
dc.subjectHYBRIDISATION
dc.subjectMICROSATELLITES
dc.subjectAFFECTATION GENETIQUE
dc.subjectTAILLE DES POPULATIONS
dc.subject.enFREQUENCY-DEPENDENT PROCESS
dc.subject.enGENETIC ASSIGNMENT
dc.subject.enSPECIES DELIMITATION
dc.subject.enCHENE
dc.title.enSpecies relative abundance and direction of introgression in oaks
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1365-294X.2009.04137.x
dc.subject.halSciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire
bordeaux.journalMolecular Ecology
bordeaux.page2228 - 2242
bordeaux.volume18
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue10
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02665530
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02665530v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Ecology&rft.date=2009&rft.volume=18&rft.issue=10&rft.spage=2228%20-%202242&rft.epage=2228%20-%202242&rft.eissn=0962-1083&rft.issn=0962-1083&rft.au=LEPAIS,%20Olivier&PETIT,%20Remy&GUICHOUX,%20Erwan&LAVABRE,%20J.%20E.&ALBERTO,%20Florian&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée