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Omsk, Russia

Omsk State Pedagogical University is a university in Omsk, Russia. Wikipedia.

Antonova E.I.,Omsk State Pedagogical University
Contemporary Problems of Ecology | Year: 2010

An hour after hyperthermia has been induced in an individual of the species Carassius auratus gibelio Bloch, a number of metabolic reactions in the liver are blocked and simultaneously responses acquired in the course of evolution are triggered. As metabolic depression develops, the activity of the Krebs cycle mitochondrial enzymes increases by 20.4% for NADIDH and decreases by 10.2% for NADMDH; glycolysis enhances by 50.2%; caspase-3 and acid phosphatase become more active, which reflects the course of programmed ways of hepatocyte destruction along the lines of apoptosis, autophagy, and necrosis. Early regeneration processes are initiated. © Pleiades Publishing, Ltd., 2010. Source

Kassal B.Y.,Omsk State Pedagogical University
Russian Journal of Biological Invasions | Year: 2016

As a result of reintroduction of individuals of the Eastern European and Belorussian subspecies of European beaver populations, a Middle Irtysh population was formed. Five stages can be distinguished in its development: adaptation (1953-1966); recovery (1967-1975); stabilization (1976-1988); depression (1989-2000); and expansion (2001-2012, not finished). Each stage has its own individual statistical and mathematical characteristics. A complete restoration of the European beaver range has not been achieved in the oblast, since the introduction of commercial hunting led to a depression in the number and number dilution of the range. Therefore, the quantitative and spatial development of the Middle Irtysh European beaver population was delayed for 25 years. © Pleiades Publishing, Ltd., 2016. Source

Efremov A.N.,Omsk State Pedagogical University
Inland Water Biology | Year: 2016

The results of studies on the structure of vegetative organs of Stratiotes aloides L. are presented. An organographic analysis and detailed morphological and anatomical descriptions of the root system, shoot system, and inflorescences have been made. It is demonstrated that the S. aloides shoot system is characterized by high vegetative mobility. The main histological topographical complexes, their proportions, and histochemical features are determined. The shoot system of S. aloides is characterized by underdeveloped xylem. Lignification of the epidermal and exodermal cell wall is a compensatory adaptation providing additional reinforcing properties. The development of diffuse collenchyma and general aerenchymatization of S. aloides tissues are effective mechanisms of adaptations to the aquatic habitat. © 2016, Pleiades Publishing, Ltd. Source

Vinarski M.V.,Omsk State Pedagogical University
Zoosystematics and Evolution | Year: 2015

Lymnaea stagnalis (L., 1758) is among the most widespread and well-studied species of freshwater Mollusca of the northern hemisphere. It is also notoriously known for its huge conchological variability. The history of scientific exploration of this species may be traced back to the end of the 16th century (Ulisse Aldrovandi in Renaissance Italy) and, thus, L. stagnalis has been chosen as a proper model taxon to demonstrate how changes in theoretical foundations and methodology of animal taxonomy have been reflected in the practice of classification of a particular taxon, especially on the intraspecific level. In this paper, I depict the long story of recognition of L. stagnalis by naturalists and biologists since the 16th century up to the present day. It is shown that different taxonomic philosophies (essentialism, population thinking, tree thinking) led to different views on the species' internal structure and its systematic position itself. The problem of how to deal with intraspecific variability in the taxonomic arrangement of L. stagnalis has been a central problem that made systematists change their opinion following conceptual shifts in taxonomic theory. © Maxim V. Vinarski. Source

Kassal B.Y.,Omsk State Pedagogical University
Russian Journal of Biological Invasions | Year: 2014

In Omsk oblast, the red squirrel Sciurus vulgaris is represented by three chorological groups with different geographic and demographic characteristics. The first group lives in the southern taiga subzone and northern mixed and deciduous forests and represents an indigenous group of S. v. martensi. The second group is formed in the southern subzone of mixed forests as a result of the introduction in 1957–1960 of S. v. exalbidus into the territory of habitation of S. v. martensi and represents a hybrid group different from the aboriginal one in the ratio of native color morphs and population dynamics and density. The third group is formed in the central forest-steppe in artificial pine plantations as a result of the introduction in 1976–1984 of S. v. exalbidus into the free area; it is small with sparse density and a characteristic ratio of color morphs. © 2014, Pleiades Publishing, Ltd. Source

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