Genetic studies on house mice from the hybrid zone of Primorskii krai

Cytogenetic and allozyme differentiation of house mice Mus musculus L. was studied in 21 samples of Primorskii krai (region) from 1984 to 1998. The us e of Q-H- and C-banding made it possible to reveal a: high variation in the content and distribution of pericentromeric heterochromatin and high frequ encies of marker autosomes 5, 10, 12, 14, 15, and 17-19 in the karyotypes o f mice from some samples. The presence of marker alleles that are typical o f the subspecies groups castaneus and musculus was shown for protein loci I dh, Sod-1, Aat-1, and Hbb. The data obtained indicate that the fauna of hou se mice of Primorye is characterized by subspecific mosaicism and hybrid or igin. Apparently, subspecies M. m. castaneus, M. musculus ssp., M. m, homou rus, and M. in. gansuensis contributed, to different degrees, to the format ion of this fauna.