Imprints of multiple glacial refugia in the Pyrenees revealed by phylogeography and palaeodistribution modelling of an endemic spider.

Details

Serval ID
serval:BIB_AAC0F6392403
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Imprints of multiple glacial refugia in the Pyrenees revealed by phylogeography and palaeodistribution modelling of an endemic spider.
Journal
Molecular ecology
Author(s)
Bidegaray-Batista L., Sánchez-Gracia A., Santulli G., Maiorano L., Guisan A., Vogler A.P., Arnedo M.A.
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Publication state
Published
Issued date
05/2016
Peer-reviewed
Oui
Volume
25
Number
9
Pages
2046-2064
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Mediterranean mountain ranges harbour highly endemic biota in islandlike habitats. Their topographic diversity offered the opportunity for mountain species to persist in refugial areas during episodes of major climatic change. We investigate the role of Quaternary climatic oscillations in shaping the demographic history and distribution ranges in the spider Harpactocrates ravastellus, endemic to the Pyrenees. Gene trees and multispecies coalescent analyses on mitochondrial and nuclear DNA sequences unveiled two distinct lineages with a hybrid zone around the northwestern area of the Catalan Pyrenees. The lineages were further supported by morphological differences. Climatic niche-based species distribution models (SDMs) identified two lowland refugia at the western and eastern extremes of the mountain range, which would suggest secondary contact following postglacial expansion of populations from both refugia. Neutrality test and approximate Bayesian computation (ABC) analyses indicated that several local populations underwent severe bottlenecks followed by population expansions, which in combination with the deep population differentiation provided evidence for population survival during glacial periods in microrefugia across the mountain range, in addition to the main Atlantic and Mediterranean (western and eastern) refugia. This study sheds light on the complexities of Quaternary climatic oscillations in building up genetic diversity and local endemicity in the southern Europe mountain ranges.

Keywords
Animal Distribution, Animals, Bayes Theorem, Cell Nucleus/genetics, Climate Change, DNA, Mitochondrial/genetics, Genetic Variation, Genetics, Population, Models, Genetic, Phylogeny, Phylogeography, Refugium, Spain, Spiders/genetics
Pubmed
Create date
26/01/2016 21:44
Last modification date
20/08/2019 15:14
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