... The spermatozoa structure peculiarities of the subgenus Sumeriomys (Rodentia, Arvicolinae, Microtus ) . ... The species of the subgenus Sumeriomys are quite similar in sperm design, which distinctly differs from that in the representatives of the subgenus Microtus . ... Scent marking in gerbils and its possible functions . ... Inter-species differences in scent marking related to a species-specific space use systems and reproductive strategies were revealed. ...