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Contrasting effects of long distance seed dispersal on genetic diversity during range expansion

hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
hal.structure.identifierPhilipps Universität Marburg = Philipps University of Marburg
dc.contributor.authorBIALOZYT, Ronald
hal.structure.identifierPhilipps Universität Marburg = Philipps University of Marburg
dc.contributor.authorZIEGENHAGEN, B.
hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
dc.contributor.authorPETIT, Remy
dc.date.issued2005
dc.identifier.issn1010-061X
dc.description.abstractEnCurrently many attempts are made to reconstruct the colonization history of plant species after the last ice age. A surprising finding is that during the colonization phase genetic diversity did not decrease as much as expected. In this paper we examine whether long distance seed dispersal events could play a role in the unexpected maintenance of genetic diversity during range expansion. This study is based on simulations carried out with a maternally inherited haploid locus using a cellular automaton. The simulations reveal a close relationship between the frequency of long distance seed dispersal events and the amount of genetic diversity preserved during colonization. In particular, when the colonized region is narrow, a complete loss of genetic diversity results from the occurrence of very rare long distance dispersal (LDD) events. We call this phenomenon the 'embolism effect'. However, slightly higher rates of LDD events reverse this effect, up to the point that diversity is better preserved than in a pure diffusion model. This phenomenon is linked to the reorganization of the genetic structure during colonization and is called the 'reshuffling effect'
dc.language.isoen
dc.publisherWiley
dc.subjectBIOLOGICAL INVASION
dc.subjectCELLULAR AUTOMATON
dc.subjectRANGE EXPANSION
dc.subjectSPATIAL GENETICS
dc.subjectGENETIQUE DES POPULATIONS
dc.subject.enCOLONIZATION
dc.subject.enEMBOLISM EFFECT
dc.subject.enGENE FLOW
dc.subject.enGENETIC DIVERSITY
dc.subject.enPATTERN FORMATION
dc.subject.enRESHUFFLING EFFECT
dc.title.enContrasting effects of long distance seed dispersal on genetic diversity during range expansion
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1420-9101.2005.00995.x
dc.subject.halSciences du Vivant [q-bio]/Biodiversité/Evolution [q-bio.PE]
bordeaux.journalJournal of Evolutionary Biology
bordeaux.page12-20
bordeaux.volume19
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02682699
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02682699v1
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