Chromosomal forms of Microtus maximowiczii (Schrenck, 1858) (Rodentia, Cricetidae): variability in 2n and NF in different geographic regions

Kartavtseva I.V., Sheremetyeva I. N. , Korobitsina K.V. , Nemkova G.A., Konovalova E.V., Korablev V.P. & VoytaL . L.

В журнале Russian Journal of Theriology

Год: 2008 Том: 7 Номер: 2 Страницы: 89-97

Analysis of the chromosomal characteristics of the Maximowicz's vole Microtus maximowiczii (242 in number) from Transbaikalia, Russian Far East and Mongolia, including own new data from 12 local populations, enabled to supplement information about chromosomal polymorphism of the species (2n=36-44; NF=52-62), describe chromosomal data for the populations which have not been before investigated, reveal a fixation of the chromosomal reconstructions in the various geographical regions and firstly describe the population with stabilized caryotype (2n=42) in the region of Chita. The revision of the chromosomal haracteristics has been done, that resulted in suggestion to consider five forms in the species composition , three of which "C", "D" and "I" have been firstly sorted out. Perhaps the "I" form belongs to the independent species which is considered as M. m. gromovi in this paper. The chromosomal characteristics for every form are not only 2n and NF, but also number of the biarmed and acrocentric chromosomes.

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