[Regularity of formation of environmental parasitic contamination in urbanized ecosystems]. / Zakonomernost' formirovaniia parazitarnogo zagriazneniia sredy v urbanizirovannykh ékosistemakh.

The materials are summarized on the basis of which the authors were given Diploma No. 118 (with priority from November 23, 1994, registered under No. 137) for discovery of the same name by the resolution of the International Association of Authors of Scientific Discoveries on May 12, 1999. FORMULA OF THE DISCOVERY: "The unknown hitherto regularity of formation of environmental parasitic contamination in urbanized ecosystems has been ascertained to embrace the following. In emergency of biosocial conditions leading to parameters: (structures, functions, regulatory mechanisms) transformations of evolutionary established parasitic systems owing to the development of expression, expansion and succession in protozoa and multicellular parasitic organisms' populations, the conditions arise that favour the violation of biocenoses homeostasis and changes in tension of epidemic, epizootic and epiphytotic processes during parasitoses". The discovery pertains to the field of biology in particular, to general, ecological, medical, veterinary and agricultural aspects of parasitology.

[Eimeria nordensheldi sp. n.--a new species of coccidia (Eucoccidiida, Eimeridae) from the Arctic lemming (Dicrostonyx torquatus vinogradovi)]. / Eimeria nordensheldi sp. n.--novyi vid koktsidii (Eucoccidiida, Eimeridae) iz kopytnogo lemminga (Dicrostonyx torquatus vinogradovi).

While studying parasites of the lemmings Dicrostonyx torquatus vinogradovi Ognev, 1948 from the coast of Wrangel Island a new species Eimeria nordensheldi was found out. Its description, figure and differential diagnosis are given.

[Parasitic systems under the conditions of human pressures (the problems of parasitic contamination)]. / Parazitarnye sistemy v usloviiakh antropopressii (problemy parazitarnogo zagriazneniia).

Foundations of the Parasitic Contamination (PC) conception being considered as an element of biological contamination and manifested itself in urbanized ecosystems under an influence of diversiform ecological (amenable to anthropopressure) and socio-economical factors are presented. PC is regarded as the "superthreshold" contamination exceeding the "natural background" (i.e. the parasitological situation outside urbanized ecosystems). As a rule, PC is accompanied with events as follow: an increase (often explosive in character) of hosts' number of all ranks, of vectors numbers and finally of parasites' numbers (parasitic expression); a partial replacement of parasite faunas (parasitic succession); a capture of new territories and hosts (parasitic expansion). As a rule, all processes run synchronously. They lead to disturbances of evolutionary generated relations (quantitative and qualitative ones) in parasitic systems and thereafter to changes in a tension of epidemic, epizootic and epiphytotic processes. It is assumed, that rates of evolutionary processes going in parasitic systems is increased at the recent historical stage. Their entropy character is being changed: they often transform from more of less regulated (balanced) processes, which were achieved in a long course of component coevolution, into chaotic (unbalanced) ones. It is stimulated with a powerful and at the same time differently vectored anthropogenic pressure onto parasitic system components. It promotes inhibition processes involved in generating of a natural parasite-host mutual adaptation.

[The environment of the Moscow megalopolis and the problems of parasitic contamination]. / Sreda megalopolisa Moskvy i problemy parazitarnogo zagriazneniia.

Studying parasitic contamination is regarded as an individual research trend for large-scale land and water areas whose natural habitat is greatly modified by man-made influences. On the one hand, parasitic contamination as its particular form acts as a factor that destabilizing the environment, on the other, the man-made deformation of natural biocenoses, which is induced by socioeconomic influences promote its occurrence and manifestations. The investigations of parasitic contamination are beyond the scope of the routine parasitological goals, though they involve their whole package and should be considered as an ecological objective of environmental protection. The cenotic communications of the links of the parasitic systems with the physicochemical and biological ingredients of the habitat predetermine qualitative and quantitative differences of parasitic contamination in the large urban areas and, finally, the dissimilar course of epidemiological, epizootic, and phytototic processes in parasitic diseases in their various sectors. The major factors influencing the levels of the parasitic pollution of the Moscow megalopolis were analyzed. These included various lines of economic activities, the population's living conditions, procedures for manufacturing foodstuffs, demographic changes. In the recent years, the situation in many parasitic infections in man (trichinosis, cryptobiasis, enterobiasis, toxocariasis, etc.), animals (fascioliasis, trichinosis, etc.) and plants (viral, fungal, and nematode diseases). There is an increase in the population of mosquitos, lice, fleas, and other insects which are vectors of dangerous parasitic diseases of man and animals.

[Classification of nematode parasites of vertebrate animals]. / Sistema nematod-parazitov pozvonochnykh zhivotnykh.

The authors give the analysis of the best known systems of nematodes, parasitizing vertebrates. The classifications of Chitwood (1933, 1937); Skrjabin et Schultz (1940) and Chabaud (1974) are discussed. A new variant of the system of the mentioned nematode groups is proposed, the classification of Chabaud being assumed as its basis. In the subclass Adenophorea the authors distinguish two orders--Trichocephalida and Dioctophymida. The subclass Secernentea includes according to Chabauds system five orders: Rhabditida, Strongylida, Oxyurida, Ascaridida and Spirurida. Two suborders--Ascaridina and Heterakina are distinguished in the order Ascaridida, three suborders--Spirurina, Cammallanina and Filariina--in the order Spirurida. The suborders Gnathostomatina and Cucullanina are admitted to be not enough valid. Both these groups are considered as superfamilies in the new variant of classification. A conception of the close phylogenetic relationships between the orders of the subclass Seurina, Cammallanina and Filariina--in the order Spirurida. The suborders Gnathostomatina and Cucullanina are admitted to be not enough valid. Both these groups are considered as superfamilies in the new variant of classification. A conception of the close phylogenetic relationships between the orders of the subclass Seurina, Cammallanina and Filariina--in the order Spirurida. The suborders Gnathostomatina and Cucullanina are admitted to be not enough valid. Both these groups are considered as superfamilies in the new variant of classification. A conception of the close phylogenetic relationships between the orders of the subclass Secernentea is championed. The authors believe that the historical development of the representatives of this nematode group occurred from the rabditiform worms towards the strictly specialized parasitic forms, which are met in the order Spirurida. The representatives of the order Rhabditida are the most closely related to the ancestral forms of the subclass Secernentea.

Nematodes of the genus Subulura (Subuluridae) parasitizing Coturnix (Galliformes).

Two nematode species of the genus Subulura, S. skrjabini and S. brumpti, have been recovered from Coturnix coturnix (a detailed redescription of the former is attached). The synonymy, geographic distribution and some morphological and metrical characters of these species are discussed. S. noctuae gallinae Semenov, 1926 and S. strongylina sensu López-Neyra (1945) are tentatively regarded as synonyms of S. differens (Sonsino, 1890).