GENETIC DIVERSITY OF UKRAINIAN BROOK LAMPREY <i>EUDONTOMYZON MARIAE </i>ON NORTH-EASTERN BORDER OF RANGE INFERRED FROM mtDNA CONTROL REGION
Genetic diversity of Ukrainian brook lamprey Eudontomyzon mariae was studied on the north- eastern border of its range using a part of control region of mtDNA (652 bp). Totally 46 specimens from 10 localities of both Don and Volga drainages were examined. Eight haplotypes were detected, three of which are most frequent. Haplotypes were distributed quite similar between Don and Volga samples that argued for recent penetration of Ukrainian brook lamprey to Volga drainage from Don tributaries.