Phylogeographic structure and past history of the circum-Mediterranean species Tomicus destruens Woll. (Coleoptera: Scolytinae).

Détails

ID Serval
serval:BIB_AE7B2E86A823
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Phylogeographic structure and past history of the circum-Mediterranean species Tomicus destruens Woll. (Coleoptera: Scolytinae).
Périodique
Molecular Ecology
Auteur(s)
Horn A., Roux-Morabito G., Lieutier F., Kerdelhue C.
ISSN
0962-1083
Statut éditorial
Publié
Date de publication
2006
Peer-reviewed
Oui
Volume
15
Numéro
6
Pages
1603-1615
Langue
anglais
Résumé
Phylogeographic studies are often focused on temperate European species with relict footholds in the Mediterranean region. Past climatic oscillations usually induced range contractions and expansions from refugial areas located in southern Europe, and spatial distribution of genetic diversity show that northward expansions were usually pioneer-like. Actually, few studies have focused on circum-Mediterranean species, which probably were not influenced in the same way by climatic oscillations. We present the phylogeography of the bark beetle Tomicus destruens, which is restricted to the whole Mediterranean basin and the Atlantic coasts of North Africa and Portugal. We systematically sequenced 617 bp of the mitochondrial genes COI and COII for 42 populations (N = 219). Analysis revealed 53 haplotypes geographically structured in two clades, namely eastern and western clades, that diverged during the Pleistocene. A contact zone was identified along the Adriatic coast of Italy. Interestingly, we found contrasting levels of genetic structure within each clade. The eastern group was characterized by a significant phylogeographic pattern and low levels of gene flow, whereas the western group barely showed a spatial structure in haplotype distribution. Moreover, the main pine hosts were different between groups, with the Aleppo-brutia complex in the east and the maritime pine in the west. Potential roles of host species, climatic parameters and geographical barriers are discussed and the phylogeographic patterns are compared to classical models of postglacial recolonization in Europe.
Mots-clé
Animals, Base Sequence, DNA, Mitochondrial/genetics, Geography, Haplotypes, Phylogeny, Sequence Alignment, Sequence Analysis, DNA, Weevils/genetics
Pubmed
Web of science
Création de la notice
19/11/2007 11:44
Dernière modification de la notice
03/03/2018 20:31
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