Contact zones between chromosome races of the common shrew Sorex araneus L. (insectivora, mammalia) at the margins of the Veps stage of the Valdai ice sheet

Borisov, Yu. M.; Kozlovsky, A. I.; Балакирев, А. Е.; Демидова, Т. Б.; Irchin, S. Yu.; Malygin, V. V.; Okulova, N. M.; Potapov, S. G.; Shchipanov, A. N.; Орлов, В. Н.

doi:10.1134/s1995425508050111

Cited by 8 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To the south from the Brosno Lake, the contact zone between these races is unknown. However, it seem likely that it lies more to the west, along the Toropa River, because one com mon shrew belonging to the Moscow race was found in the settlement of Bubonitsy (56°44′ N/31°31′ E), in the population of the West Dvina race [3,4].…”

Section: Resultsmentioning

confidence: 97%

“…Therefore, it seems likely that this zone appeared during thhe late glaciation, i.e., more than 12000 years ago, in the period of the formation of the modern river network and the forest-tundra ecosystem on Valdai Hights [3,4].…”

Section: Resultsmentioning

confidence: 98%

“…Investigations of the contact zone of three chromo somal races, Moscow, West Dvina, and Seliger on Val dai Hights in the basin of Upper West Dvina started in 2007 [3,4]. The samples were collected in June and July of 2008 and 2009.…”

Section: Methodsmentioning

confidence: 99%

“…Chromosome preparations were made according to a standard method using the bone marrow and spleen cells [4]. Chromosomes were identified with the help of G banding (with the use of trypsin) in accordance to the international nomenclature of the common shrew chromosomes [7].…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Narrow hybrid zone between Moscow and Western Dvina chromosomal races and specific features of population isolation in common shrew Sorex araneus (Mammalia)

et al. 2012

Self Cite

View full text Add to dashboard Cite

The contact zone between Moscow and Western Dvina chromosomal races of common shrew Sorex araneus L. at the south of the Valdai Hights was traced over a distance of 20 km. Within this, close to parapatric, contact zone of chromosomal races the width of sympatry zone was about 500 m (the narrowest among currently known hybrid zones), and the proportion of hybrids was 24.3%. It was shown that in bimodal hybrid zones between chromosomal races of common shrew the width of sympatry zones varied from 0.5 to 13 km. This width does not correlate with the cytogenetic features of the hybrids, and seems to be determined by competitive relations between the races. The hybrid proportion is determined by the type of hybrid het erozygosity, and decreased in the race sympatry zone from 33-40 to 21.5-25.2%. The decrease of the hybrid proportion can be associated with the abnormal fertility of either the first generation, or the backcross hybrids.

show abstract

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Narrow hybrid zone between Moscow and Western Dvina chromosomal races and specific features of population isolation in common shrew Sorex araneus (Mammalia)

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…Probably, such zones have remained stable since the latest Comp. Cytogenet., 2010 4(2) Comparative Cytogenetics glaciation (10,000 -15,000 years) Borisov et al, 2008Borisov et al, , 2009. From the other hand, in contact zones of "acrocentric" chromosome races and "metacentric" chromosome races, which were formed as a result of centric fusions, the penetration of metacentric chromosomes into "acrocentric" populations and vice versa is observed for dozens of kilometers (Searle, Wojcik, 1998;Jones, Searle, 2003;Zima et al, 2003;Fredga, 2007).…”

Section: Introductionmentioning

confidence: 99%

A wide hybrid zone of chromosome races of the common shrew, Sorex araneus Linnaeus, 1758 (Mammalia), between the Dnieper and Berezina Rivers (Belarus)

Borisov¹,

Cherepanova²,

Орлов³

2010

CCG

View full text Add to dashboard Cite

Abstract. Karyological study of 75 specimens of the common shrew, Sorex araneus Linnaeus, 1758, from 8 localities in the Berezina River basin (eastern Belarus) was carried out. A wide hybrid zone (not less than 100 km) between the northern West Dvina chromosome race (XX / XYY, af, bc, gm, hk, ip, jl, no, qr, tu) and the southern Turov race (XX / XYY, af, bc, g, h/k, i, jl, m, n, o, p, q, r, tu) was revealed in this region. Frequencies of fused-unfused arms comprising four diagnostic metacentrics of the West Dvina race (g/m, h/k, n/o, q/r) were calculated in all capture sites. Taking into consideration the absence of metacentric ip in specimens from six northern localities, the Borisov (Bs) race (XX / XYY, af, bc, g/m, h/k, i, jl, n/o, p, q/r, tu) (Orlov, Borisov, 2009) was distinguished in these sites. Common shrews from two southern localities on the right and left banks of the Berezina River (Berezino vicinity) were referred to the Turov race. The presence of four metacentrics descended from the West Dvina race in the Bs race testifi es to the hypothesis expressed earlier that the polymorphic populations of the S. araneus between the Dnieper and Berezina Rivers originated as a result of the West Dvina race spreading from the north and of hybridization between this race and local populations with acrocentric chromosomes.

show abstract

The clinal variation of metacentric frequency in the populations of the common shrew, Sorex araneus L., in the Dnieper and Pripyat interfluve

et al. 2016

View full text Add to dashboard Cite

Contact zones between chromosome races of the common shrew Sorex araneus L. (insectivora, mammalia) at the margins of the Veps stage of the Valdai ice sheet

Cited by 8 publications

References 7 publications

Narrow hybrid zone between Moscow and Western Dvina chromosomal races and specific features of population isolation in common shrew Sorex araneus (Mammalia)

Narrow hybrid zone between Moscow and Western Dvina chromosomal races and specific features of population isolation in common shrew Sorex araneus (Mammalia)

A wide hybrid zone of chromosome races of the common shrew, Sorex araneus Linnaeus, 1758 (Mammalia), between the Dnieper and Berezina Rivers (Belarus)

The clinal variation of metacentric frequency in the populations of the common shrew, Sorex araneus L., in the Dnieper and Pripyat interfluve

Contact Info

Product

Resources

About