Sergina S. N. RussiaPetrozavodskInstitute of Biology of the Karelian Research Centre, Russian Academy of Sciences, 11 Pushkinskaya Str., Petrozavodsk 185910, Russiacvetnick@yandex.ru Author's articles MERCURY CONTENT AND ANTIOXIDANT SYSTEM IN INSECTIVOROUS (INSECTIVORA, MAMMALIA) AND RODENTS (RODENTIA, MAMMALIA) OF VARIOUS ECOGENESIS