Russian Journal of Ecology, Vol. 31, No. 4, 2000, pp. 281-283. Translated frora Ekologiya, No. 4. 2000, pp. 307-309. Original Russian Text Copyright 9 2000 by Ivanov, Semenova. SHORT COMMUNICATIONS V. M. Ivanov and N. N. Semenova Astrakhan State Biosphere Reserve, nab. reki Tsarev 119, Astrakhan, 414021 Russia Received March I 1, 1999 Key words: introduction, mammals, trematodes, infestation rate. 1788) is also found in carnivores (rather than in Changes in the geographic ranges of free-living spe- cies are usually followed by corresponding changes in rodents), and mollusks of the genus Stagnicola and amphibians are involved in its life cycle. the ranges of their parasites and, as a consequence, in the parasitological situation in areas occupied by intro- Gastrodiscoides hominus Lewis et McConnell, 1876, duced animals. is an obligatory parasite of wild boars; the intermediate Changes in the parasitofauna of acclimated animals host of this species is the mollusk Anisus acronicus. demonstrate general trends: on new territories, some The dispersal of muskrats over the Volga Delta resulted parasitic species disappear from introduced animals, in the expansion of gastodiscoidosis foci; previously, while other species persist. The parasitofauna is some- the range of the causative agent of this invasion times enriched
Russian Journal of Ecology – Springer Journals
Published: Nov 21, 2007
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