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

• Published in: Comparative Cytogenetics
• Main Author: S Pavlova
• Format: Article in Journal/Newspaper
• Language: English
• Published: Pensoft Publishers 2010
• Subjects: Genetics; QH426-470; Arctic; Kandalaksha; Poyakonda; Fennoscandian; karelia*; karelian
• Online Access: https://doi.org/10.3897/compcytogen.v4i1.30; https://doaj.org/article/a55fd6ee287b4b99bc59b686e830d8cd

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 specific 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 XY1Y2 in the male). A group of race specific 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.