Taxonomic status and origin of the shrews (Soricidae) from the Canary islands inferred from a mtDNA comparison with the European Crocidura species.

Détails

ID Serval
serval:BIB_ADF4B44A56DD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Taxonomic status and origin of the shrews (Soricidae) from the Canary islands inferred from a mtDNA comparison with the European Crocidura species.
Périodique
Molecular Phylogenetics and Evolution
Auteur(s)
Vogel P., Cosson J.F., López Jurado L.F.
ISSN
1055-7903 (Print)
ISSN-L
1055-7903
Statut éditorial
Publié
Date de publication
2003
Volume
27
Numéro
2
Pages
271-282
Langue
anglais
Notes
Publication types: Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
European island shrews are either relicts of the endemic Pleistocene fauna, e.g.,. Crocidura zimmermanni, or were introduced from continental source populations. In order to clarify the taxonomic status and the origin of the two shrew species from the Canary islands, a 981bp fragment of cytochrome b gene was investigated in all European Crocidura species and compared with the Canary shrew (Crocidura canariensis) and the Osorio shrew (Crocidura osorio). The first shares its karyotype with the Sicilian shrew Crocidura sicula (2N=36), the second with the Greater white-toothed shrew Crocidura russula (2N=42), suggesting possible sister species relationships. Results confirm the monophyly of taxa sharing the same karyotype. Genetic distances between C. sicula and C. canariensis suggest a separation since 5 Myr. The first was probably isolated from the North African ancestor after the Messinian desiccation; the second arrived on the Canary islands by natural jump dispersal. Within the 2N=42 cluster, a first split separated an Eastern line (Tunisia) from a western line (Morocco/Europe) of C. russula. C. osorio clusters together with C. russula from Spain, indicating conspecificy. This suggests a recent introduction from Spain by human.
Mots-clé
Animals, Atlantic Islands, Base Sequence, Cluster Analysis, Cytochrome b Group/genetics, DNA, Mitochondrial/genetics, Europe, Evolution, Molecular, Karyotyping, Likelihood Functions, Molecular Sequence Data, Phylogeny, Shrews/classification, Shrews/genetics
Pubmed
Web of science
Création de la notice
24/01/2008 18:32
Dernière modification de la notice
20/08/2019 16:17
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