Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology

Divergent selection stemming from environmental variation may induce local adaptation and ecological speciation whereas gene flow might have a homogenizing effect. Gene flow among populations using different environ- ments can be reduced by geographical distance (isolation-by-distance) or by diverge...

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Detalhes bibliográficos
Autores: Edelaar, Pim, Alonso, D., Lagerveld, S., Björklund, M.
Tipo de documento: artigo
Data de publicação:2012
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/51867
Acesso em linha:http://hdl.handle.net/10261/51867
Access Level:Acceso aberto
Palavra-chave:divergent selection
ecological speciation
gene flow
landscape genetics
Loxia curvirostra
population divergence
reproductive isolation
resource specialization
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spelling Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecologyEdelaar, PimAlonso, D.Lagerveld, S.Björklund, M.divergent selectionecological speciationgene flowlandscape geneticsLoxia curvirostrapopulation divergencereproductive isolationresource specializationDivergent selection stemming from environmental variation may induce local adaptation and ecological speciation whereas gene flow might have a homogenizing effect. Gene flow among populations using different environ- ments can be reduced by geographical distance (isolation-by-distance) or by divergent selection stemming from resource use (isolation-by-ecology). We tested for and encountered phenotypic and genetic divergence among Spanish crossbills utilizing different species of co-occurring pine trees as their food resource. Morphological, vocal and mtDNA divergence were not correlated with geographical distance, but they were correlated with differences in resource use. Resource diversity has now been found to repeatedly predict crossbill diversity. However, when resource use is not 100% differentiated, additional characters (morphological, vocal, genetic) must be used to uncover and validate hidden population structure. In general, this confirms that ecology drives adaptive divergence and limits neutral gene flow as the first steps towards ecological speciation, unprevented by a high potential for gene flow.Peer reviewedEuropean Society of Evolutionary Biology201220122012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/51867reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/j.1420-9101.2011.02443.xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/518672026-05-22T06:33:51Z
dc.title.none.fl_str_mv Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
title Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
spellingShingle Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
Edelaar, Pim
divergent selection
ecological speciation
gene flow
landscape genetics
Loxia curvirostra
population divergence
reproductive isolation
resource specialization
title_short Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
title_full Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
title_fullStr Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
title_full_unstemmed Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
title_sort Population differentiation and restricted gene flow in Spanish crossbills: not isolation-by-distance but isolation-by-ecology
dc.creator.none.fl_str_mv Edelaar, Pim
Alonso, D.
Lagerveld, S.
Björklund, M.
author Edelaar, Pim
author_facet Edelaar, Pim
Alonso, D.
Lagerveld, S.
Björklund, M.
author_role author
author2 Alonso, D.
Lagerveld, S.
Björklund, M.
author2_role author
author
author
dc.subject.none.fl_str_mv divergent selection
ecological speciation
gene flow
landscape genetics
Loxia curvirostra
population divergence
reproductive isolation
resource specialization
topic divergent selection
ecological speciation
gene flow
landscape genetics
Loxia curvirostra
population divergence
reproductive isolation
resource specialization
description Divergent selection stemming from environmental variation may induce local adaptation and ecological speciation whereas gene flow might have a homogenizing effect. Gene flow among populations using different environ- ments can be reduced by geographical distance (isolation-by-distance) or by divergent selection stemming from resource use (isolation-by-ecology). We tested for and encountered phenotypic and genetic divergence among Spanish crossbills utilizing different species of co-occurring pine trees as their food resource. Morphological, vocal and mtDNA divergence were not correlated with geographical distance, but they were correlated with differences in resource use. Resource diversity has now been found to repeatedly predict crossbill diversity. However, when resource use is not 100% differentiated, additional characters (morphological, vocal, genetic) must be used to uncover and validate hidden population structure. In general, this confirms that ecology drives adaptive divergence and limits neutral gene flow as the first steps towards ecological speciation, unprevented by a high potential for gene flow.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/51867
url http://hdl.handle.net/10261/51867
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/j.1420-9101.2011.02443.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv European Society of Evolutionary Biology
publisher.none.fl_str_mv European Society of Evolutionary Biology
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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