A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation

An ongoing new synthesis in evolutionary theory is expanding our view of the sources of heritable variation beyond point mutations of fixed phenotypic effects to include environmentally sensitive changes in gene regulation. This expansion of the paradigm is necessary given ample evidence for a herit...

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Detalles Bibliográficos
Autores: Gómez-Mestre, Iván, Jovani, Roger
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/90215
Acceso en línea:http://hdl.handle.net/10261/90215
Access Level:acceso abierto
Palabra clave:Genetic variation
Bottlenecks
Selection
Heterogeneus environment
Genetic accommodation
Adaptation
Developmental plasticity
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spelling A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variationGómez-Mestre, IvánJovani, RogerGenetic variationBottlenecksSelectionHeterogeneus environmentGenetic accommodationAdaptationDevelopmental plasticityAn ongoing new synthesis in evolutionary theory is expanding our view of the sources of heritable variation beyond point mutations of fixed phenotypic effects to include environmentally sensitive changes in gene regulation. This expansion of the paradigm is necessary given ample evidence for a heritable ability to alter gene expression in response to environmental cues. In consequence, single genotypes are often capable of adaptively expressing different phenotypes in different environments, i.e. are adaptively plastic. We present an individual-based heuristic model to compare the adaptive dynamics of populations composed of plastic or non-plastic genotypes under a wide range of scenarios where we modify environmental variation, mutation rate and costs of plasticity. The model shows that adaptive plasticity contributes to the maintenance of genetic variation within populations, reduces bottlenecks when facing rapid environmental changes and confers an overall faster rate of adaptation. In fluctuating environments, plasticity is favoured by selection and maintained in the population. However, if the environment stabilizes and costs of plasticity are high, plasticity is reduced by selection, leading to genetic assimilation, which could result in species diversification. More broadly, our model shows that adaptive plasticity is a common consequence of selection under environmental heterogeneity, and hence a potentially common phenomenon in nature. Thus, taking adaptive plasticity into account substantially extends our view of adaptive evolution. © 2013 The Author(s) Published by the Royal Society. All rights reserved.Peer ReviewedRoyal Society (Great Britain)2014201420132014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/90215reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/902152026-05-22T06:33:51Z
dc.title.none.fl_str_mv A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
title A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
spellingShingle A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
Gómez-Mestre, Iván
Genetic variation
Bottlenecks
Selection
Heterogeneus environment
Genetic accommodation
Adaptation
Developmental plasticity
title_short A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
title_full A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
title_fullStr A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
title_full_unstemmed A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
title_sort A heuristic model on the role of plasticity in adaptive evolution: Plasticity increases adaptation, population viability and genetic variation
dc.creator.none.fl_str_mv Gómez-Mestre, Iván
Jovani, Roger
author Gómez-Mestre, Iván
author_facet Gómez-Mestre, Iván
Jovani, Roger
author_role author
author2 Jovani, Roger
author2_role author
dc.subject.none.fl_str_mv Genetic variation
Bottlenecks
Selection
Heterogeneus environment
Genetic accommodation
Adaptation
Developmental plasticity
topic Genetic variation
Bottlenecks
Selection
Heterogeneus environment
Genetic accommodation
Adaptation
Developmental plasticity
description An ongoing new synthesis in evolutionary theory is expanding our view of the sources of heritable variation beyond point mutations of fixed phenotypic effects to include environmentally sensitive changes in gene regulation. This expansion of the paradigm is necessary given ample evidence for a heritable ability to alter gene expression in response to environmental cues. In consequence, single genotypes are often capable of adaptively expressing different phenotypes in different environments, i.e. are adaptively plastic. We present an individual-based heuristic model to compare the adaptive dynamics of populations composed of plastic or non-plastic genotypes under a wide range of scenarios where we modify environmental variation, mutation rate and costs of plasticity. The model shows that adaptive plasticity contributes to the maintenance of genetic variation within populations, reduces bottlenecks when facing rapid environmental changes and confers an overall faster rate of adaptation. In fluctuating environments, plasticity is favoured by selection and maintained in the population. However, if the environment stabilizes and costs of plasticity are high, plasticity is reduced by selection, leading to genetic assimilation, which could result in species diversification. More broadly, our model shows that adaptive plasticity is a common consequence of selection under environmental heterogeneity, and hence a potentially common phenomenon in nature. Thus, taking adaptive plasticity into account substantially extends our view of adaptive evolution. © 2013 The Author(s) Published by the Royal Society. All rights reserved.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014
2014
2014
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/10261/90215
url http://hdl.handle.net/10261/90215
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Royal Society (Great Britain)
publisher.none.fl_str_mv Royal Society (Great Britain)
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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