The occurrence of dot-like micro B chromosomes in Korean field mice Apodemus peninsulae from the shore of the Teletskoye Lake (Altai Mountains)

Yuriy M Borisov; Sergey A Abramov; Marina Y Borisova; Igor A Zhigarev

doi:10.3897/CompCytogen.v14i1.47659

The occurrence of dot-like micro B chromosomes in Korean field mice Apodemus peninsulae from the shore of the Teletskoye Lake (Altai Mountains)

Comp Cytogenet. 2020 Mar 4;14(1):97-105. doi: 10.3897/CompCytogen.v14i1.47659. eCollection 2020.

Authors

Yuriy M Borisov¹, Sergey A Abramov², Marina Y Borisova³, Igor A Zhigarev⁴

Affiliations

¹ Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr.33, Moscow 119071, Russia Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Moscow Russia.
² Institute of Systematics and Ecology of Animals, SB RAS, ul. Frunze 11, Novosibirsk 630091, Russia Institute of Systematics and Ecology of Animals, Russian Academy of Sciences Novosibirsk Russia.
³ University of Nantes, UFR Medicine, 1 rue Gaston Veil, Nantes 44035, France University of Nantes Nantes France.
⁴ Moscow Pedagogical State University, Institute of Biology and Chemistry, ul. Kibalchicha 6, Moscow 129164, Russia Moscow Pedagogical State University Moscow Russia.

Abstract

The data on the changes in the cytogenetic structure of the geographic population of Korean field mouse Apodemus (Alsomys) peninsulae Thomas, 1907 at the southern shore of the Teletskoye Lake (Altai Republic) are presented. In 1980 no dot-like microchromosomes were found in 34 mice captured on the southern and northern coasts of the Teletskoye Lake. In 2011, a 1.6-fold (from 2.7 to 4.3) increase in the mean number of B chromosomes compared to the rate estimated there earlier in 1980 was discovered. In 11 of the 15 mice (73%) captured in 2011, the karyotypes contained 1-2 dot-like micro B chromosomes and 1-5 macro B chromosomes. The pollution of the territory by the remains of the rocket fuel components may be an appropriate explanation for the cause of the karyological changes observed in A. peninsulae in this region.

Keywords: Apodemus (Alsomys) peninsulae; B chromosome dynamics; dot-like micro B chromosomes; karyotype.

Yuriy M. Borisov, Sergey A. Abramov, Marina Y. Borisova, Igor A. Zhigarev.