1. Laboratory of Cellular and Molecular Protistology, Zoological Institute, Russian Academy of Sciences, 199034 Saint Petersburg, Russia
2. Institute of Biology, Karelian Research Centre, Russian Academy of Sciences, 185910 Petrozavodsk, Russia
3. Saint Petersburg State University, 199034 Saint Petersburg, Russia
4. Saint Petersburg branch of the Russian Federal Research Institute of Fisheries and Oceanography «VNIRO» (L.S. Berg State Research Institute of Lake and River Fisheries), 199053 Saint Petersburg, Russia