Karyotypic race Kiev in the Right Dnieper basin (Belarus): polymorphism and contact with other races of Sorex araneus
Aims. To describe the of chromosomal polymorphism of karyotypic race Kiev and its contact zones with other races karyological analysis of common shrews in the right Dnieper basin (Belarus) was carried out. Methods. Chromosomes of common shrews collected in 11 points were identified by the G-pattern. Results. The northeastern part of the Kiev race area is located between rivers Pripyat and Berezina. Along the river Ptich race Kiev borders and contacts with race Bialowieza and in Bragino vic. – with race Neroosa. The frequency of diagnostic metacentrics in the studied populations of races Kiev, Bialowieza, and Neroosa was lower than in populations of the same races in the main parts of their ranges. Conclusions. Probably, the observed polymorphism in populations in the right Dnieper basin is resulted by a spread of the diagnostic chromosomes of theKiev, Bialowieza, and Neroosa races in populations with acrocentric karyotype which lived in this territory in the Pleistocene.Key words: karyotypic races, Sorex araneus, Rb fusions, polymorphism.