Multiple glacial refugia and contemporary dispersal shape the genetic structure of an endemic amphibian from the Pyrenees

Autor: Marc Ventura, Víctor Osorio, Jenny Caner, Olivier Calvez, Olivier Guillaume, Mathieu Denoël, Elodie Darnet, Alexandre Miró, David O'Brien, Fabien Aubret, Albert Martínez-Silvestre, Jan Tomàs, Romain Bertrand, Teresa Buchaca, Audrey Trochet, Jérémie Souchet, Marc Mossoll-Torres, Federica Lucati, Ibor Sabas, Murielle Richard, Gilles Pottier, Hugo Le Chevalier, Manon Poignet, Laurent Barthe
Přispěvatelé: Faculty of Sciences of the University of Lisbon (OI-FCUL), INTEGRATIVE FRESHWATER ECOLOGY GROUP CENTER FOR ADVANCED STUDIES OF BLANES CEAB-CSIC BLANES ESP, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Station d'écologie théorique et expérimentale (SETE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), Université de Liège, Catalonia Reptile and Amphibian Rescue Center (CRARC), Bomosa, Scottish Natural Heritage, Fraser Darling House, Repositório da Universidade de Lisboa
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Molecular Ecology
Molecular Ecology, Wiley, 2020, 29 (15), pp.2904-2921. ⟨10.1111/mec.15521⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
ISSN: 0962-1083
1365-294X
Popis: Este artículo contiene 6 figuras, 4 tablas.
Historical factors (colonization scenarios, demographic oscillations) and contemporary processes (population connectivity, current population size) largely contribute to shaping species’ present‐day genetic diversity and structure. In this study, we use a combination of mitochondrial and nuclear DNA markers to understand the role of Quaternary climatic oscillations and present‐day gene flow dynamics in determining the genetic diversity and structure of the newt Calotriton asper (Al. Dugès, 1852), endemic to the Pyrenees. Mitochondrial DNA did not show a clear phylogeographic pattern and presented low levels of variation. In contrast, microsatellites revealed five major genetic lineages with admixture patterns at their boundaries. Approximate Bayesian computation analyses and linear models indicated that the five lineages likely underwent separate evolutionary histories and can be tracked back to distinct glacial refugia. Lineage differentiation started around the Last Glacial Maximum at three focal areas (western, central and eastern Pyrenees) and extended through the end of the Last Glacial Period in the central Pyrenees, where it led to the formation of two more lineages. Our data revealed no evidence of recent dispersal between lineages, whereas borders likely represent zones of secondary contact following expansion from multiple refugia. Finally, we did not find genetic evidence of sex‐biased dispersal. This work highlights the importance of integrating past evolutionary processes and present‐day gene flow and dispersal dynamics, together with multilocus approaches, to gain insights into what shaped the current genetic attributes of amphibians living in montane habitats.
Economic support was provided by the European Commission LIFE+ project LimnoPirineus (LIFE13 NAT/ES/001210), by the Spanish Government project Funbio (RTI2018-096217-B-I00), by the Interreg POCTEFA ECTOPYR project (EFA031/15) and by the Societas Europaea Herpetologica (SEH, research grant awarded to F.L.). F.L. had a doctoral grant funded by Fundação para a Ciência e Tecnologia (FCT, grant number PD/BD/52598/2014). M.D. is research Director at Fonds de la Recherche Scientifique – FNRS.
Databáze: OpenAIRE
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