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

Details

Serval ID
serval:BIB_ADF4B44A56DD
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Taxonomic status and origin of the shrews (Soricidae) from the Canary islands inferred from a mtDNA comparison with the European Crocidura species.
Journal
Molecular Phylogenetics and Evolution
Author(s)
Vogel P., Cosson J.F., López Jurado L.F.
ISSN
1055-7903 (Print)
ISSN-L
1055-7903
Publication state
Published
Issued date
2003
Volume
27
Number
2
Pages
271-282
Language
english
Notes
Publication types: Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
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.
Keywords
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
Create date
24/01/2008 17:32
Last modification date
20/08/2019 15:17
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