The list of the chromosome races of the common shrew <i>Sorex araneus</i> (updated 2002)

Wójcik, Jan M.; Бородин, П. М.; Fedyk, Stanisław; Fredga, Karl; Hausser, Jacques; Mishta, Alina; Орлов, В. Н.

doi:10.1515/mamm.2003.67.2.169

Cited by 87 publications

(71 citation statements)

References 12 publications

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“…Due to its extensive chromosomal variation resulting from multiple Robertsonian fusions and whole-arm reciprocal translocations (WARTs) the species has been the focus of evolutionary studies coordinated since 1987 by the International Sorex araneus Cytogenetics Committee, ISACC . In the course of regular fi eld studies covering much of the huge species range -from Britain in the west to Baikal in the east -up to 70 chromosome races of S. araneus have incrementally been discovered and listed according to the proceedings of the ISACC meetings (Zima et al, 1996;Wójcik et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

A distinct chromosome race of the common shrew (Sorex araneus Linnaeus, 1758) within the Arctic Circle in European Russia

Pavlova¹

2010

CCG

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Abstract.A unique arm chromosome combination detected in the common shrew karyotype from a Karelian locality within the Arctic Circle (Kandalaksha State Nature Reserve, European Russia) is interpreted as a new chromosome race -Poyakonda. According to the standard nomenclature of G-banded chromosomes of Sorex araneus the karyotype contains the species specifi c bi-armed autosomes af, bc, jl, tu and the typical complex sex chromosome system (two metacentrics XX in the female and one metacentric/two acrocentrics XY 1 Y 2 in the male). A group of race specifi c chromosomes includes 4 metacentric combinations (hn, ip, kq, mo) and two acrocentric chromosomes (g and r). In all 5 shrew specimens examined the same homozygous autosome complement 2Na=20 was found. Data available from neighbouring regions in Russia and, in particular, from adjacent Fennoscandian countries reveal complex relationships between karyotypes of common shrews from the European North.

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Section: Introductionmentioning

confidence: 99%

A distinct chromosome race of the common shrew (Sorex araneus Linnaeus, 1758) within the Arctic Circle in European Russia

Pavlova¹

2010

CCG

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“…This species varies both in chromosome number and morphology reflecting the multiple occurrences of Robertsonian fusions and wholearm reciprocal translocations. In particular, more than 70 different chromosome races have been identified, each characterised by a particular complement of biarmed autosomes (Wójcik et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Standard DAPI karyotype of the common shrew Sorex araneus L. (Soricidae, Eulipotyphla)

Minina¹,

Бородин²,

Searle³

et al. 2007

Rus.J.Theriol.

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“…The three pairs of metacentric autosomes af, bc, and tu as well as the sexual chromosomes are invariant, whereas the primitive acrocentric autosomes g to r may be distributed into various acrocentric and metacentric combinations. Together, these polymorphisms allowed more than 60 chromosome races to be described (Wó jcik et al 2003).…”

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confidence: 99%

Restricted Gene Flow at Specific Parts of the Shrew Genome in Chromosomal Hybrid Zones

et al. 2006

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Abstract. The species and races of the shrews of the Sorex araneus group exhibit a broad range of chromosomal polymorphisms. European taxa of this group are parapatric and form contact or hybrid zones that span an extraordinary variety of situations, ranging from absolute genetic isolation to almost free gene flow. This variety seems to depend for a large part on the chromosome composition of populations, which are primarily differentiated by various Robertsonian fusions of a subset of acrocentric chromosomes. Previous studies suggested that chromosomal rearrangements play a causative role in the speciation process. In such models, gene flow should be more restricted for markers on chromosomes involved in rearrangements than on chromosomes common in both parent species. In the present study, we address the possibility of such differential gene flow in the context of two genetically very similar but karyotypically different hybrid zones between species of the S. araneus group using microsatellite loci mapped to the chromosome arm level. Interspecific genetic structure across rearranged chromosomes was in general larger than across common chromosomes. However, the difference between the two classes of chromosomes was only significant in the hybrid zone where the complexity of hybrids is expected to be larger. These differences did not distinguish populations within species. Therefore, the rearranged chromosomes appear to affect the reproductive barrier between karyotypic species, although the strength of this effect depends on the complexity of the hybrids produced.

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The list of the chromosome races of the common shrew Sorex araneus (updated 2002)

Cited by 87 publications

References 12 publications

A distinct chromosome race of the common shrew (Sorex araneus Linnaeus, 1758) within the Arctic Circle in European Russia

A distinct chromosome race of the common shrew (Sorex araneus Linnaeus, 1758) within the Arctic Circle in European Russia

Standard DAPI karyotype of the common shrew Sorex araneus L. (Soricidae, Eulipotyphla)

Restricted Gene Flow at Specific Parts of the Shrew Genome in Chromosomal Hybrid Zones

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