Parasitism and ecological parasitology. P. 81-93.
Parasitism as one of the life modes is a general biological phenomenon and is a characteristic of all viruses, many taxa of bacteria, fungi, protists, metaphytes, and metazoans. Zooparasitology is focused on studies of parasitic animals, particularly, on their taxonomy, anatomy, life cycles, host-parasite relations, biocoenotic connections, and evolution. Ecological parasitology is a component of ecology, as the scientific study of the relation of living organisms with each other and their surroundings. In the present paper, critical analysis of the problems, main postulates, and terminology of the modern ecological parasitology is given.
in RussianCharacteristics of the distribution of ticks Ixodes persulcatus and Ixodes pavlovskyi at the border between the forest and forest-steppe zones in the territory near Ob River. P. 94-103.
Field investigations performed in 2009 and 2010 in the Novosibirskiy, Toguchinskiy, and Sovetskiy districts of Novosibirsk Province showed, that at present, Ixodes persulcatus, I. pavlovskyi (subspecies I. pavlovskyi occidentals Filippova et Panova, 1998), and Dermacentor reticulatus (Fabricius, 1794) permanently cohabitate in the woodland park of the Novosibirsk Akademgorodok, and I. pavlovskyi is the dominating species there. The highest abundance of I. pavlovskyi was recorded in pine forests subjected to intensive recreational load. At the same time, I. pavlovskyi was not found in the Novosibirskiy District and in the plane part of Toguchinskiy District, while the abundance of I. persulcatus is almost three times higher in the above mentioned territories, than in the Akademgorodok.
in RussianStructure of the component community of parasites of Gymnocephalus cernuus (Linnaeus, 1758) in different seasons. P. 104-113.
In the conditions of middle stream of Vychegda River, the species diversity of parasite community associated with Gymnocephalus cernuus was found to be maximal in March and minimal in September. It is shown, that during a year the parasite community passes through the phases of development in December—March, completion in May—June, and destruction in July—September, which form the annual cycle of the community.
in RussianLife cycle of the trematode Echinochasmus spinosus Odhner, 1911 (Echinostomatidae) in the natural conditions of Primorye. P. 114-119.
Life cycle and developmental stages of the trematode Echinochasmus spinosus Odhner, 1911 are described. As it was established experimentally, in the conditions of Primorsky Krai circulation of the trematode involves first intermediate host, mollusk Parafossarulus spiridonovi, and the second one, freshwater fishes. Adult worms were reared in chicken.
in RussianVariability of myxospores in the myxosporidian genus Henneguya depending on host and geography in the transect "Khubsugul Lake (Mongolia) — Baikal Lake — Laptev Sea (Russia)". P. 120-128.
Analysis of variability and estimation of significance of the differences in morphometric parameters of spores have been carried out for three species of the genus Henneguya (Myxosporidia). Representatives of these species collected both in the same water body (but from different host species) and in geographically distant localities were compared. Thus, we compared samples of Henneguya zschokkei from different host species in Chivyrkui Bay of Baical Lake and in Laptev Sea, and also we compared samples of this species from Baikal Lake with those from Laptev Sea. Materials on Henneguya cerebralis from Baikal Lake were compared with those from Khubsugul Lake; samples of H. cutanea from one host species (Siberian dace) but from water bodies of different type (lake or river) were compared.
in RussianHelminths of wild canids in Azerbaijan and ways of its formation. P. 129-139.
The complete list of helminthes parasitizing canids in Azerbaijan is given; ways of formation of the canids' helminthofauna in Azerbaijan are reconstructed. As a result of our study, 42 helminth species were recorded; 25 of them parasitize jackals, 16 parasitize wolfs, and 39 species were found in foxes. The helminthofauna includes 5 species of Trematoda, 14 species of Cestoda, 1 species of Acanthocephala, and 22 species of Nematoda. By the life cycle, 32 species belong to biohelminthes and 10 species are geohelminthes.
in RussianIdentification of mosquito-parasitic microsporidia, Amblyospora rugosa and Trichoctosporea pygopellita (Microsporidia: Amblyosporidae), from Acanthocyclops venustus and Acanthocyclops reductus (Copepoda: Cyclopidae), based on small subunit rDNA analysis. P. 140-146.
Identical small subunit rDNA sequences were obtained for microsporidia Amblyospora rugosa from blood-sucking mosquitoes larvae Ochlerotatus cantans, O. cataphylla and copepods Acanthocyclops venustus, as well as for Trichoctosporea pygopellita from mosquitoes larvae Ochlerotatus cyprius, O. excrucians and copepods Acanthocyclops reductus. The data on molecular phylogeny and ecological researches show that in Siberia mosquito-parasitic microsporidia of the genera Amblyospora and Trichoctosporea have complex life cycle involving likely intermediate hosts, Acanthocyclops copepods. Life cycle of parasites is synchronized with phenology of their hosts. The phylogenetic analyses shows, that genus Trichoctosporea should be transferred from the family Thelohaniidae to the family Amblyosporidae.
in RussianUnique characteristics of the energy metabolism in Microsporidia as a result of durational adaptation to the intracellular development. P. 147-157.
Microsporidia is a large group of fungi-related unicellular eukaryotes with obligate intracellular lifestyle infecting a wide range of invertebrate and vertebrate hosts. Long adaptation of the parasites to intracellular development resulted in extraordinary minimization of their metabolic system. The paper summarizes the original results and literature data on the study of microsporidian carbohydrate and energy metabolism. On the basis of the material, it is concluded that minimization of microsporidian cell machinery was accompanied by the acquisition of a number of unique characteristics, which were not found in other eukaryotes.
in RussianTo eightieth birthday of Valentin Samsonovich Vashchenok. P. 158-159.
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