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Year 2012, Volume 46, Issue 3
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Seasonal dynamics of the fauna and of the component community structure of parasites of the minnow Phoxinus phoxinus (L.) from the Pechora River. 2. P. 161-170.
It is demonstrated that the component community of parasites of the minnow in the midle Pechora River in September—Decemner corresponds in its characteristics to the forming community, when relations between species in the community are formed again, but the rate of these transformation is significantly lower than in spring—summer.
in Russian
Trematodes (Trematoda) of Amphibia from the Middle Volga Region. 1. Orders Fasciolida, Hemiurida, Paramphistomida and Strigeida. P. 171-192.
Data ontrematodes of the orders Fasciolida, Hemiurida, Paramphistomida and Strigeida from 11 amphibian species of the Middle Volga region are given. Literature data for the last 30 years are reviewed for the first time; these data are supplemented by our own material. Reliable recordings are confirmed for 23 trematode species. Two of these species are new for amphibian trematode fauna of Russia. New hosts were revealed for 12 trematode species. Trematodes of the new for the region amphibian species, the edible frog Rana esculenta Linnaeus, 1758, are recorded for the first time. Two trematodes from freshwater fishes are shown to be temporary or occasional parasites of amphibians. The following characteristics are given for each parasite: it's systematic position, the spectrum of hosts, localization, collecting site, biology, geographical range, and the degree of host specificity. The morphological description and original figures are given for 9 species of parasites.
in Russian
Ecological analysis of the fauna of infusoria of the family Trichodinidae Claus, 1874 (Ciliophora Dofflein, 1901, Peritrichida F. Stein, 1859) in pond fishes of Kaliningrad province. P. 193-202.
A total of 21 Infusoria species of the family Trichodinidae parasitize in pond fishes of Kaliningrad Province. Species of the genus Trichodina dominate, being represented by 15 species. The majority of revealed Infusoria are characterized by wide specificity. Narrow specificity is characteristic of Trichodina urinaria (the bass) and Trichodinella lotae (the burbot). Extensiveness and intensity of the invasion depends on host species, its biology, and the character of the reservoir.
in Russian
Symbionts of Mytilus edulis in the littoral and sublittoral zones of the Kandalaksha and Onega Gulfs of the White Sea. P. 203-225.
Composition of the fauna of organisms associated with Mytilus edulis in the Kandalaksha and Onega Gulfs of the White Sea has been examined. The following 8 symbiotic species were revealed: Choricystis sp. (Chlorophyceae), Peniculistoma mytili, Ancistrum mytili (Ciliata, Oligohymenophorea), Urastoma cyprinae, Paravortex sp. (Platyhelminthes, Rhabditophora), and metacercaria of Cercaria parvicaudata, Himasthla sp., and Gymnophallus sp. (Platyhelminthes, Trematoda). Besides, different free-living organisms were found in the mantle cavity; 6 species of nematodes, the planktonic copepod Microsetella norvegica, undetermined copepods, isopod Jaera sp., sea mites of the family Halacaridae, and chironomid larvae. Parameters of infestation and places of localization in the host are given for each group of organisms. Some regularities in the horizontal and vertical distribution of organisms associated with M. edulis are noted.
in Russian
Estimation of the biological age in males of the taiga tick (Ixodes persulcatus: Ixodinae) by fat reserves in the midgut. P. 226-230.
Some criteria for the estimation of the biological and calendar age by the fat storage in midgut cells of Ixodes persulcatus males were established on the basis of examination of ticks from the laboratory culture.
in Russian
Feather mite fauna (Astigmata) of birds of some passerine families (Passeriformes) in the south of Western Siberia. P. 231-247.
Feather mites (Astigmata) are specialized parasites living on the plumage and skin of birds. The paper presents the data on the infestation of some passerines (Passeriformes) by feather mites in the south of the Western Siberia (Omsk and Tyumen Provinces). On 16 bird species, we found 24 species of feather mites, belonging to the families Analgidae, Dermoglyphidae, Pteronyssidae, Trouessartiidae and Proctophyllodidae. Among them, 19 species are common parasites of passerine birds examined; five species were detected on atypical hosts. Ten mite species were recorded for the first time on examined passerine species. The analysis of the distribution of abundant and ordinary mite species on their hosts demonstrated that the majority of bird species possesses specific distribution pattern on host plumage with the preference of certain feather types. We also obtained new data on host associations of several mite species.
in Russian