Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards

Understanding the processes driving the diversity of mountain herpetofauna requires a comprehensive examination of species diversification across evolutionary scales. Here, we investigate the phylogeography of Iberolacerta, a genus of eight lizard species mainly restricted to high elevations in sout...

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Autores: Dufresnes, Christophe, Gippner, Sven, Hofmann, Sylvia, Litvinchuk, Spartak, Zagar, Anamarija, Jablonski, Daniel, Pottier, Gilles, Megia Palma, Rodrigo Manuel, Sánchez Montes, Gregorio, Jiménez Robles, Octavio, Ayllón, Enrique, Crochet, Pierre-André, Martínez-Solano, Iñigo
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/128796
Acceso en línea:https://hdl.handle.net/20.500.14352/128796
Access Level:acceso abierto
Palabra clave:56:574.9
598.112(4)
Biogeography
Climate change
Europe
Lacertidae
RAD-seq
Evolución
Reptiles
Genética
2401.08 Genética Animal
2502.05 Paleoclimatología
2401.16 Herpetología
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spelling Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizardsDufresnes, ChristopheGippner, SvenHofmann, SylviaLitvinchuk, SpartakZagar, AnamarijaJablonski, DanielPottier, GillesMegia Palma, Rodrigo ManuelSánchez Montes, GregorioJiménez Robles, OctavioAyllón, EnriqueCrochet, Pierre-AndréMartínez-Solano, Iñigo56:574.9598.112(4)BiogeographyClimate changeEuropeLacertidaeRAD-seqEvoluciónReptilesGenética2401.08 Genética Animal2502.05 Paleoclimatología2401.16 HerpetologíaUnderstanding the processes driving the diversity of mountain herpetofauna requires a comprehensive examination of species diversification across evolutionary scales. Here, we investigate the phylogeography of Iberolacerta, a genus of eight lizard species mainly restricted to high elevations in southwestern Europe. Using genomic data, we reconstructed a nuclear phylogeny that aligns with mitochondrial evidence in supporting the divergence of all currently recognized species. Notably, we detect historical nuclear gene flow between I. cyreni and I. martinezricai in Central Spain, suggesting past range overlap, reminiscent of previously observed mitochondrial introgression between I. galani and I. monticola, and the lack of divergence between disjoint populations of I. monticola. Bioclimatic projections accordingly depict broader historical ranges during the last glacial maximum compared to interglacial and current conditions. At the intraspecific level, genomic analyses of four high-elevation species reveal that genetic structure is mainly shaped by isolation-by-distance and, in I. cyreni, by separation among mountain ranges, while heterozygosity generally decreases with elevation. These findings are consistent with the impact of glacial-interglacial cycles on the genetic diversity of montane taxa: populations experience genetic isolation and altitudinal bottlenecks during interglacial periods, but are reconnected and admix in lowland areas during glacial periods. These processes are expected to leave contrasting signatures between the mitochondrial and nuclear genomes, as well as between slow- and fast-evolving molecular markers. From a conservation perspective, our results highlight that the genetically richest – and potentially most adaptive – populations occur at the lowland edges of the species’ ranges, where they are also most vulnerable to climate change.ElsevierUniversidad Complutense de Madrid20252025-11-2620252025-11-26journal articlehttp://purl.org/coar/resource_type/c_6501EVoRhttp://purl.org/coar/version/c_dc82b40f9837b551info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/128796reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1287962026-06-02T12:44:21Z
dc.title.none.fl_str_mv Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
title Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
spellingShingle Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
Dufresnes, Christophe
56:574.9
598.112(4)
Biogeography
Climate change
Europe
Lacertidae
RAD-seq
Evolución
Reptiles
Genética
2401.08 Genética Animal
2502.05 Paleoclimatología
2401.16 Herpetología
title_short Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
title_full Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
title_fullStr Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
title_full_unstemmed Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
title_sort Slippery slopes: montane isolation and elevational shifts shape the evolution and diversity of Iberolacerta lizards
dc.creator.none.fl_str_mv Dufresnes, Christophe
Gippner, Sven
Hofmann, Sylvia
Litvinchuk, Spartak
Zagar, Anamarija
Jablonski, Daniel
Pottier, Gilles
Megia Palma, Rodrigo Manuel
Sánchez Montes, Gregorio
Jiménez Robles, Octavio
Ayllón, Enrique
Crochet, Pierre-André
Martínez-Solano, Iñigo
author Dufresnes, Christophe
author_facet Dufresnes, Christophe
Gippner, Sven
Hofmann, Sylvia
Litvinchuk, Spartak
Zagar, Anamarija
Jablonski, Daniel
Pottier, Gilles
Megia Palma, Rodrigo Manuel
Sánchez Montes, Gregorio
Jiménez Robles, Octavio
Ayllón, Enrique
Crochet, Pierre-André
Martínez-Solano, Iñigo
author_role author
author2 Gippner, Sven
Hofmann, Sylvia
Litvinchuk, Spartak
Zagar, Anamarija
Jablonski, Daniel
Pottier, Gilles
Megia Palma, Rodrigo Manuel
Sánchez Montes, Gregorio
Jiménez Robles, Octavio
Ayllón, Enrique
Crochet, Pierre-André
Martínez-Solano, Iñigo
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 56:574.9
598.112(4)
Biogeography
Climate change
Europe
Lacertidae
RAD-seq
Evolución
Reptiles
Genética
2401.08 Genética Animal
2502.05 Paleoclimatología
2401.16 Herpetología
topic 56:574.9
598.112(4)
Biogeography
Climate change
Europe
Lacertidae
RAD-seq
Evolución
Reptiles
Genética
2401.08 Genética Animal
2502.05 Paleoclimatología
2401.16 Herpetología
description Understanding the processes driving the diversity of mountain herpetofauna requires a comprehensive examination of species diversification across evolutionary scales. Here, we investigate the phylogeography of Iberolacerta, a genus of eight lizard species mainly restricted to high elevations in southwestern Europe. Using genomic data, we reconstructed a nuclear phylogeny that aligns with mitochondrial evidence in supporting the divergence of all currently recognized species. Notably, we detect historical nuclear gene flow between I. cyreni and I. martinezricai in Central Spain, suggesting past range overlap, reminiscent of previously observed mitochondrial introgression between I. galani and I. monticola, and the lack of divergence between disjoint populations of I. monticola. Bioclimatic projections accordingly depict broader historical ranges during the last glacial maximum compared to interglacial and current conditions. At the intraspecific level, genomic analyses of four high-elevation species reveal that genetic structure is mainly shaped by isolation-by-distance and, in I. cyreni, by separation among mountain ranges, while heterozygosity generally decreases with elevation. These findings are consistent with the impact of glacial-interglacial cycles on the genetic diversity of montane taxa: populations experience genetic isolation and altitudinal bottlenecks during interglacial periods, but are reconnected and admix in lowland areas during glacial periods. These processes are expected to leave contrasting signatures between the mitochondrial and nuclear genomes, as well as between slow- and fast-evolving molecular markers. From a conservation perspective, our results highlight that the genetically richest – and potentially most adaptive – populations occur at the lowland edges of the species’ ranges, where they are also most vulnerable to climate change.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-11-26
2025
2025-11-26
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
EVoR
http://purl.org/coar/version/c_dc82b40f9837b551
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/128796
url https://hdl.handle.net/20.500.14352/128796
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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