Reference : Multiple glacial refugia and contemporary dispersal shape the genetic structure of an...
Scientific journals : Article
Life sciences : Zoology
Life sciences : Multidisciplinary, general & others
http://hdl.handle.net/2268/248960
Multiple glacial refugia and contemporary dispersal shape the genetic structure of an endemic amphibian from the Pyrenees
English
Lucati, Federica [University of Lisbon > > > >]
Poignet, Manon [> >]
Miró, Alexandre [> >]
Trochet, Audrey [> >]
Aubret, Fabien [> >]
Barthe, Laurent [> >]
Bertrand, Romain [> >]
Buchaca, Teresa [> >]
Calvez, Olivier [> >]
Caner, Jenny [> >]
Darnet, Elodie [> >]
Denoël, Mathieu mailto [Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Laboratoire d'Écologie et de Conservation des Amphibiens >]
Guillaume, Olivier [> >]
Le Chevalier, Hugo [> >]
Martínez-Silvestre, Albert [> >]
Mossoll-Torres, Marc [> >]
O’Brien, David [> >]
Osorio, Víctor [> >]
Pottier, Gilles [> >]
Richard, Murielle [> >]
Sabás, Ibor [> >]
Souchet, Jérémie [> >]
Tomàs, Jan [> >]
Ventura, Marc [Center for advanced Studies of Blanes (CSIC) > > > >]
Aug-2020
Molecular Ecology
Wiley
29
15
2904-2921
Yes (verified by ORBi)
International
09621083
1365294X
Oxford
United Kingdom
[en] Calotriton asper ; genetic structure ; phylogeographic history ; Pyrenean brook newt ; Pyrenees ; recent dispersal ; mt DNA ; migrants ; gene flow ; microsatellite ; phylogeography ; amphibian ; glacial refugia ; admixture ; mountains
[en] 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.
Freshwater and OCeanic science Unit of reSearch - FOCUS
F.R.S.-FNRS - Fonds de la Recherche Scientifique
http://hdl.handle.net/2268/248960
10.1111/mec.15521
https://onlinelibrary.wiley.com/doi/abs/10.1111/mec.15521
This paper is also available in the publisher website (Wiley ; see DOI link hereabove).

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