2024-03-29T13:56:31Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2151052020-10-29T09:41:56Zcom_10261_88com_10261_8col_10261_341
DIGITAL.CSIC
author
Lucati, Federica
author
Poignet, Manon
author
Miró, Alexandre
author
Trochet, Audrey
author
Aubret, Fabien
author
Barthe, Laurent
author
Bertrand, Romain
author
Buchaca, Teresa
author
Calvez, Olivier
author
Caner, Jenny
author
Darnet, Elodie
author
Denoël, Mathieu
author
Guillaume, Olivier
author
Le Chevalier, Hugo
author
Martínez-Silvestre, Albert
author
Mossoll-Torres, Marc
author
O'Brien, David
author
Osorio, Víctor
author
Pottier, Gilles
author
Richard, Murielle
author
Sabas, Ibor
author
Souchet, Jérémie
author
Tomàs, Jan
author
Ventura, Marc
2020-06-24T10:06:50Z
2020-06-24T10:06:50Z
2020
Molecular Ecology : DOI:10.1111/mec.15521 (2020)
0962-1083
http://hdl.handle.net/10261/215105
1365-294X
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.
eng
openAccess
Recent dispersal
Pyrenees
Calotriton
Genetic structure
Phylogeographic history
Pyrenean brook newt
Multiple glacial refugia and contemporary dispersal shape the genetic structure of an endemic amphibian from the Pyrenees
artículo
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URL
https://digital.csic.es/bitstream/10261/215105/1/Lucati%20et%20al.%202020_Mol.Ecol..pdf
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1479c210fe32156c2cbf51587e0d096b
20937969
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Lucati et al. 2020_Mol.Ecol..pdf