Abstract
The article provides information on monitoring studies of polar bear helminthiasis in the wild population of Franz Josef Land and in zoos in Russia. Wild bears were found to be free from invasion. Analysis of fecal samples from polar bears from 17 zoos showed that the total extensiveness of the invasion was 21%, 2 types of helminths were identified: Baylisascaris transfuga and Diphyllobothrium sp. Samples with helminth eggs were found in zoos in Nizhny Novgorod, Rostov-on-Don, Penza, Udmurtia, Khabarovsk, Novosibirsk, Kazan, Krasnoyarsk, Moscow, Volokolamsk, Seversk, Perm.
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