V.V. Andrianov - Ph. D. (Biol.), Senior Research Scientist, Kazan Federal University, Kazan E.K. Zavoisky Physical-Technical Institute (Kazan). E-mail: slava_snail@yahoo.com Kh.L. Gainutdinov - Ph. D. (Biol.), Senior Research Scientist, Kazan Federal University,. Kazan E.K. Zavoisky Physical-Technical Institute. E-mail: kh_gainutdinov@mail.ru