The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops

Aim Analysing the drivers of intraspecific variation and how reproductive barriers arise is an essential step to infer the mechanisms of biogeographic differentiation. In populations of a specialized alpine species, we explore the role of geography and climate in the divergence of genetic, morpholog...

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Autores: Pato Fernández, Joaquina, Illera, Juan Carlos, Obeso Suárez, José Ramón, Laiolo, Paola
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::36b061843949ccac53e16702ccf902ce
Acceso en línea:http://hdl.handle.net/10261/187068
Access Level:acceso abierto
Palabra clave:Acoustic signals
Cantabrian mountains
Crossing experimen
Intraspecific variation
Isolation by adaptation
Isolation by distance
Mate choice
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
title The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
spellingShingle The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
Pato Fernández, Joaquina
Acoustic signals
Cantabrian mountains
Crossing experimen
Intraspecific variation
Isolation by adaptation
Isolation by distance
Mate choice
title_short The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
title_full The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
title_fullStr The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
title_full_unstemmed The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
title_sort The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintops
dc.creator.none.fl_str_mv Pato Fernández, Joaquina
Illera, Juan Carlos
Obeso Suárez, José Ramón
Laiolo, Paola
author Pato Fernández, Joaquina
author_facet Pato Fernández, Joaquina
Illera, Juan Carlos
Obeso Suárez, José Ramón
Laiolo, Paola
author_role author
author2 Illera, Juan Carlos
Obeso Suárez, José Ramón
Laiolo, Paola
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Agencia Estatal de Investigación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Pato Fernández, Joaquina [0000-0002-1919-5181]
Illera Cobo, Juan Carlos [0000-0002-4389-0264]
Obeso Suárez, José Ramón [0000-0001-7157-6478]
Laiolo, Paola [0000-0002-2009-6797]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Acoustic signals
Cantabrian mountains
Crossing experimen
Intraspecific variation
Isolation by adaptation
Isolation by distance
Mate choice
topic Acoustic signals
Cantabrian mountains
Crossing experimen
Intraspecific variation
Isolation by adaptation
Isolation by distance
Mate choice
description Aim Analysing the drivers of intraspecific variation and how reproductive barriers arise is an essential step to infer the mechanisms of biogeographic differentiation. In populations of a specialized alpine species, we explore the role of geography and climate in the divergence of genetic, morphological and acoustic characters, and analyse the functional consequences of variation on mate choice. Taxon Chorthippus cazurroi (Orthoptera: Caelifera, Acrididae, Gomphocerinae). Location The entire distribution of the species (23 populations from six massifs of the Cantabrian Mountains, NW Spain). Methods First, we analysed the extent of intraspecific spatial divergence and the covariation among climatic niche, genetic (mtDNA), acoustic (song structure) and morphological (body size) traits. Then, we analysed the consequences of phenotypic variation by means of a crossing experiment among populations from different elevations. This served to test for differences in sexual selection among body size‐divergent populations and for the relationship between male traits, female preference and reproduction. Results Genetic, morphologic and acoustic divergence increased with geographic distance. Female morphology was also affected by climate variation, while male one tightly covaried with the song differentiation. Females more closely approached males investing more time in song activities, but weakly responded to the rest of acoustic features and morphological variation. They also distanced themselves slightly more from males from different populations, although this behaviour did not lead to clear differences in reproductive parameters. Main conclusions The process of colonization of mountain massifs has led to significant genetic and phenotypic changes in C. cazurroi. Phenotypic divergence does not constitute a strong intrinsic barrier to reproduction and is largely unpaired from female preference, overall suggesting that sexual selection is a minor actor in the process of differentiation as compared, for instance, to drift. This does not exclude that traits associated with individual condition are under strong selection and, therefore, do not vary so extensively. This study dismisses the idea that alpine specialists with narrow distributions lack genetic and phenotypic variability, and highlights the importance of synthesizing biogeographic and experimental approaches to obtain stronger and deeper inferences about the dynamics and mechanisms of biological differentiation.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/187068
url http://hdl.handle.net/10261/187068
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2014-53899-P
CGL2017-85191-P/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL2017-85191-P
https://doi.org/10.1111/jbi.13540
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
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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spelling The roles of geography, climate and sexual selection in driving divergence among insect populations on mountaintopsPato Fernández, JoaquinaIllera, Juan CarlosObeso Suárez, José RamónLaiolo, PaolaAcoustic signalsCantabrian mountainsCrossing experimenIntraspecific variationIsolation by adaptationIsolation by distanceMate choiceAim Analysing the drivers of intraspecific variation and how reproductive barriers arise is an essential step to infer the mechanisms of biogeographic differentiation. In populations of a specialized alpine species, we explore the role of geography and climate in the divergence of genetic, morphological and acoustic characters, and analyse the functional consequences of variation on mate choice. Taxon Chorthippus cazurroi (Orthoptera: Caelifera, Acrididae, Gomphocerinae). Location The entire distribution of the species (23 populations from six massifs of the Cantabrian Mountains, NW Spain). Methods First, we analysed the extent of intraspecific spatial divergence and the covariation among climatic niche, genetic (mtDNA), acoustic (song structure) and morphological (body size) traits. Then, we analysed the consequences of phenotypic variation by means of a crossing experiment among populations from different elevations. This served to test for differences in sexual selection among body size‐divergent populations and for the relationship between male traits, female preference and reproduction. Results Genetic, morphologic and acoustic divergence increased with geographic distance. Female morphology was also affected by climate variation, while male one tightly covaried with the song differentiation. Females more closely approached males investing more time in song activities, but weakly responded to the rest of acoustic features and morphological variation. They also distanced themselves slightly more from males from different populations, although this behaviour did not lead to clear differences in reproductive parameters. Main conclusions The process of colonization of mountain massifs has led to significant genetic and phenotypic changes in C. cazurroi. Phenotypic divergence does not constitute a strong intrinsic barrier to reproduction and is largely unpaired from female preference, overall suggesting that sexual selection is a minor actor in the process of differentiation as compared, for instance, to drift. This does not exclude that traits associated with individual condition are under strong selection and, therefore, do not vary so extensively. This study dismisses the idea that alpine specialists with narrow distributions lack genetic and phenotypic variability, and highlights the importance of synthesizing biogeographic and experimental approaches to obtain stronger and deeper inferences about the dynamics and mechanisms of biological differentiation.Funding for this study was provided by grant 4278 of the British Ecological Society, grants CGL2011‐28177, CGL2014‐53899‐P and CGL2017‐85191‐P from the Spanish Ministry of Economy, Industry and Competitiveness, and grant LIQUENES 2014 from FICYT and edp‐HC Energía.Peer reviewedJohn Wiley & SonsMinisterio de Economía y Competitividad (España)Agencia Estatal de Investigación (España)Ministerio de Ciencia, Innovación y Universidades (España)Pato Fernández, Joaquina [0000-0002-1919-5181]Illera Cobo, Juan Carlos [0000-0002-4389-0264]Obeso Suárez, José Ramón [0000-0001-7157-6478]Laiolo, Paola [0000-0002-2009-6797]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/187068reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2014-53899-PCGL2017-85191-P/AEI/10.13039/501100011033info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL2017-85191-Phttps://doi.org/10.1111/jbi.13540Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::36b061843949ccac53e16702ccf902ce2026-05-22T06:33:51Z
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