Chromosomal complement and distribution of the social vole (Microtus socialis parvus Satunin, 1906) in the North Caucasus

In the article the chromosomal complement of the social vole (Microtus socialis parvus Satunin, 1906) from five additional points of the North Caucasus is studied in a comparative aspect. Much attention is given to the distribution of this species taking into account the landscape structure and biotopic allocation. It is concluded that the karyotype of the social vole in the analysed area is not susceptible to polymorphism. The chromosomal complement of all studied individuals is identical in the number and morphology of chromosomes.

Age and Seasonal Aspects of Sexual Differences in Social Vole, Microtus socialis, (Rodentia, Arvicolinae), in the South of Ukraine

Expression of sexual differences in social vole populations of virgin steppe reserve “Askania Nova” analyzed in the article. It is established that the severity of the sexual differences of value morphological features depending on the age of the animals and to a lesser degree on the season.