T.A. Trifonova - Dr. Sc. (Biol.), Professor, Head of Department of Biology and Ecology, Vladimir State University named after A.&N. Stoletovs. E-mail: tatrifon@mail.ru D.V. Trifonov - Post-graduate Student, Department of Physics and Applied Mathematics, Vladimir State University named after A.&N. Stoletovs. E-mail: matthew_sp@mail.ru