by Mammal Research Institute, Polish Academy of Sciences in Białowieża .
Written in English
|Statement||editors, Jeremy B. Searle and Jan M. Wójcik.|
|Series||Acta theriologica -- v. 45, suppl. 1|
|Contributions||Searle, Jeremy B., Wójcik, Jan M., International Sorex araneus Cytogenetics Committee. Meeting|
|LC Classifications||QL737.I56 .E85 2000|
|The Physical Object|
|Pagination||190 p. :|
|Number of Pages||190|
Abstract. This review summarizes available data on the problem of taxonomic and evolutionary differentiation in the “araneus” groups of species of the genus Sorex (Eulipotyphla, Mammalia). Report 2 describes the hierarchical structuring, population system, and interracial hybrid zones in the common shrew (Sorex araneus).Cited by: 2. The taxa showing the greatest variation in karyotype are usually classified into the Sorex araneus group. Its evolution was associated with chromosomal rearrangements, which . We review data on the chromosomal variation in the common shrewSorex araneus Linnaeus, in the context of recent molecular findings. The article considers all aspects of chromosomal variation in this species: within-population polymorphism, karyotypic races, hybrid zones between karyotypic races, chromosomal evolution, and speciation. The recent molecular data provide vital information on different evolutionary Cited by: Analysis of two hybrid zones of the common shrew group (Sorex araneus) detected stronger genetic structure and lower gene flow in loci located within rearranged chromosomes [56,57]. Restricted gene flow was observed near centromeres of fused chromosomes in a hybrid zone between chromosomal races of the house mouse Mus musculus domesticus .
The species of the common shrew (Sorex araneus) group are morphologically very similar, but have undergone a spectacular chromosomal evolution. We investigate here the evolutionary history of the Sorex araneus group distributed in western Europe. A special feature of Sorex araneus is its ubiquitous and rapid chromosomal evolution. The different chromosomal races (CR) of S. araneus are defined using karyotype variation and polymorphism. Evolution in the Sorex araneus Group: Cytogenetics and Molecular Aspects. Searle, J.B. & J.M. Wójcik (eds). Geographic Range. Sorex araneus is found in Europe, including Great Britain and the Pyrenees. The extent of its range to the east is Lake Baikal, except in the dry steppes and desert zone. It is not found in Iberia, or most of France.(Mitchell-Jones , Stone ).
Key words. -Chromosomal evolution, cytochrome b gene, mitochondrial DNA (mtDNA), phy-logeny, phylogeography, Robertsonian fusion, Sorex araneus group. Received Accepted Ma The shrews of the Sorex araneus group show one of the most spectacular chromosomal evo-lutions ever recorded in mammals. Eight kar-. A special feature of Sorex araneus is its ubiquitous and rapid chro-mosomal evolution. The diﬀerent chromosomal races (CR) of S. araneus are deﬁned using karyotype variation and polymorphism. More than 60 largely geographically nonoverlapping CR have been described and classiﬁed into ﬁve distinct phylogroups: the Valais race, West European. Additional data for nuclear DNA give new insights into the phylogenetic position of Sorex granarius within the Sorex araneus group G. Yannica,⇑, S. Dubeyb, J. Haussera, P. Bassetc a Department of Ecology and Evolution, Biophore, University of Lausanne, CH Lausanne, Switzerland bSchool of Biological Sciences, University of Sydney NSW , Australia. among at least some British S. araneus races predated the last Pleistocene glaciation. Keywords: Sorex, paleophylogeography, molar shape, morphometrics, karyotypic race. INTRODUCTION Two decades of cytogenetic, protein, and mitochondrial DNA (mtDNA) studies of the Sorex araneus group have enriched our view of the evolution of this species complex. The common shrew is.