scholarly journals Physiological age of female blood-sucking midges (Diptera, Ceratopogonidae) in the south of Tyumen oblast

2018 ◽  
Vol 26 (3) ◽  
pp. 179-182
Author(s):  
O. A. Fiodorova
Keyword(s):  
Far East ◽  
Practical Interest ◽  
Southern Taiga ◽  
Physiological Age ◽  
Biting Midges ◽  
Forest Zone ◽  
Female Population ◽  
Tyumen Oblast ◽  
Blood Sucking ◽  
Southern Taiga Subzone

Despite the fact the fact that biting midges (Diptera, Ceratopogonidae) are abundant blood-sucking insects in a number of areas of Siberia and the Far East, their biology in Russia and abroad is poorly studied. The objective of our research was physiological age of female midges in the subzone of southern taiga of Tyumen Oblast. Physiological age of female midges was determined using the method of V. P. Polovodova and T. S. Detinova, suggested for mosquitoes, modified for midges, in relation to the number of the yellow bodies – enlarged ovarioles. The conducted studies focused on physiological age of females of three species of midges of the subgenus Avaritia (Culicoides punctatus, C. fascipennis, C. grisescens), which occur in the forest zone of the southern taiga subzone. The species are abundant blood-sucking insects. Mostly, they complete one gonotrophic cycle, but by the end of the season, the number of females which had laid eggs twice reached 20–30%. Part (10–22%) of the female population does not succeed in completing even a single gonotrophic cucle. In spite of colder weather in the end of summer, a rejuvenation of the population was observed, which occured due to death of physiologically old females. Comparison of changes in number and age composition of females allows us to state that the first two species have two, and the third – one generation during a season. Determination of physiological age of females or the number of gonotrophic cycles they complete, and therefore, the extent of their biting, is a subject of not only theoretical but also practical interest for assessing the epidemiological situation in the areas where midges are vectors of a number of infectious and invasive diseases, such as tularemia, onchocerciasis, bluetongue virus or febris catarrhalis ovium, and Schmallenberg virus. This indicates the relevance of studying density of population vectors of infections. In the Russian Federation, such research unfortunately has only been conducted within the scope of narrow studies, and only in certain regions.

scholarly journals Physiological age of female bloodsucking midges (Diptera: Simuliidae) in the south of Tyumen region

2020 ◽  
Vol 10 (5) ◽  
pp. 105-109
Author(s):  
O.A. Fiodorova ◽  
S.A. Kozlov ◽  
O.A. Fiodorova
Keyword(s):  
Far East ◽  
Practical Interest ◽  
Southern Taiga ◽  
Physiological Age ◽  
Gonotrophic Cycle ◽  
Forest Zone ◽  
Female Population ◽  
Blood Sucking ◽  
The Russian Federation

Despite the fact that blood-sucking flies (Diptera: Simuliidae) are mass bloodsuckers in a number of regions of Siberia and Far East, their biology in Russia and in countries of far abroad is still little studied. The purpose of this work is to study the physiological age of female flies in the subzone of the southern taiga of Tyumen region. Physiological age of female flies was determined by the method of V.P. Polovodova and T.S. Detinova, which was initially developed for mosquitoes, with a modification for black gnats by the number of “yellow bodies” - extensions of egg tube-ducks. Studies on the physiological age of females of one species of blood-sucking flies (Diptera: Simuliidae) Byssodon maculatus Mg., found in the subzone of the southern taiga of the forest zone. The species are mass bloodsuckers. It completes mainly one gonotrophic cycle, however by the end of the season the number females having laid eggs two times reaches 20-30%. A large portion of the female population (10 -22%) fails to complete any gonotrophic cycle. Due to the cold times at the end of the summer season, there is a rejuvenation of the population due to the death of physiologically old females. Comparing changes in population and age composition of females allows to claim that the first two species have two and the last one - just one geniture during the season. Determination of the physiological age of the female or the number of gonotrophic cycles done by a female, and accordingly, number of blood suckings is of practical interest, not only a theoretical one, since it gives the possibility to evaluate the epidemiological situation in areas where flies are vectors of a number of infectious and invasionary diseases of thalaremia, onchocercosis, simulidotoxicosis. All this points to the relevance of the study of population density as vectors of infections in the territory of the Russian Federation. Unfortunately, it was not carried out extensively, and even some research is being done in the framework of narrow studies and only in some regions.

Prospects of anti-corruption education of the population in the Far-East: sociological analysis

2020 ◽  
Vol 92 (3) ◽  
pp. 161-176
Author(s):  
M. N. Zinyatova ◽  
◽  
Ye.A. Kleymenov ◽  
Keyword(s):  
Russian Federation ◽  
Financial Support ◽  
Far East ◽  
Practical Interest ◽  
Sociological Analysis ◽  
Management Decisions ◽  
The Far East ◽  
Semantic Orientation ◽  
The Russian Federation

On the basis of quantitative and qualitative expert sociological surveys, the article presents a model of anti-corruption education in Russia. This model is formed by seven main elements: basis, principles, subjects, objects, methods and means, content of materials (semantic orientation), indicators of the effectiveness of anti-corruption education. Comparing the obtained sociological data characterizing these elements with the corresponding elements of the anti-corruption mechanism enshrined in the current regulatory legal acts of the Russian Federation, the authors identified a number of inconsistencies. They concern, first of all, the principles, subjects of implementation of anti-corruption education, as well as indicators for assessing its effectiveness. For example, experts suggest using non-statutory principles of financial support and standardization of materials presented in the framework of such education when conducting anti-corruption education. At the same time, for the optimization of management decisions in the field of anti-corruption education, scientific and practical interest and contradictions identified within the obtained sociological data are of interest. Such contradictions are most clearly traced in relation to the subjects and objects of anti-corruption education.

Water-Soluble Components in Soils of Heterolithic Conjugate Landscapes in the Southern Taiga Subzone

2021 ◽  
Vol 76 (1) ◽  
pp. 1-10
Author(s):  
L. G. Bogatyrev ◽  
A. I. Benediktova ◽  
M. M. Karpukhin ◽  
V. M. Telesnina ◽  
N. I. Zhilin ◽  
...  
Keyword(s):  
Southern Taiga ◽  
Water Soluble ◽  
Southern Taiga Subzone ◽  
Soluble Components

scholarly journals Culicoides biting midges at the National Zoological Gardens of South Africa : research communication

2007 ◽  
Vol 74 (4) ◽  
Author(s):  
K. Labuschagne ◽  
L.J. Gerber ◽  
I. Espie ◽  
S. Carpenter
Keyword(s):  
South Africa ◽  
Vector Competence ◽  
Far East ◽  
Wild Animals ◽  
Light Traps ◽  
Biting Midges ◽  
Research Communication ◽  
Culicoides Imicola ◽  
Large Numbers ◽  
Culicoides Biting Midges

Culicoides biting midges (Diptera: Ceratopogonidae) are responsible for the transmission of a large number of pathogens to livestock and wild animals. In this study the presence of the genus, using light traps based at four different sites within the National Zoological Gardens of South Africa, was investigated during 2002-2004. In total, 37 species were recorded, including large numbers of Culicoides imicola Kieffer, 1913, which is responsible for the transmission of economically important arboviruses in South Africa, Europe, Middle and Far East. These results are discussed with reference to the wider Culicoides fauna in the Onderstepoort area of South Africa, their vector competence as well as biosecurity at the National Zoological Gardens.

Changes in Ecological Features of Soils after Controlled Fires in Forests Defoliated by the Siberian Moth in the Southern Taiga Subzone of the Yenisei Region, Siberia

2004 ◽  
Vol 31 (3) ◽  
pp. 310-318 ◽  
Author(s):  
Yu. N. Krasnoshchekov ◽  
E. N. Valendik ◽  
I. N. Bezkorovainaya ◽  
N. D. Sorokin ◽  
V. V. Kuz'michenko ◽  
...  
Keyword(s):  
Southern Taiga ◽  
Ecological Features ◽  
Siberian Moth ◽  
Southern Taiga Subzone

scholarly journals Polygon «Ural-carbon» (Severka)

2021 ◽  
pp. 4-14
Author(s):  
С.В. Залесов ◽  
В.В. Фомин ◽  
Е.П. Платонов ◽  
Г.А. Годовалов ◽  
К.А. Башегуров ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Betula Pendula ◽  
Southern Taiga ◽  
Average Density ◽  
Forest Stands ◽  
Betula Pendula Roth ◽  
Wide Range ◽  
Southern Taiga Subzone ◽  
Growing Conditions ◽  
Mature Stands

На основе баз данных лесорастительных материалов проанализированы таксационные показатели насаждений, произрастающих на территории карбонового научно-исследовательского по- лигона, расположенного в Уральском учебно-опытном лесхозе (УУОл) Уральского государственного лесотехнического университета (УГлТУ). Отмечается, что основными лесными формациями на поли- гоне являются сосняки и березняки. Доля насаждений с доминированием в составе древостоев других пород-лесообразователей невелика. Помимо сосны обыкновенной (Pinus sylvestris L.) и березы повислой (Betula pendula Roth.), другие виды произрастают, как правило, в примеси с указанными. Среди дре- востоев преобладают среднеполнотные спелые и перестойные насаждения. большинство древостоев характеризуется относительно высокими классами бонитета. Насаждения, произрастающие на террито- рии полигона, относятся к 13 типам леса, что свидетельствует о разнообразии лесорастительных усло- вий. В целом можно отметить, что видовое разнообразие древесных пород и лесорастительных условий на карбоновом научно-исследовательском полигоне УУОл УГлТУ обеспечивает возможность изучения широкого спектра вопросов депонирования углерода лесными экосистемами в условиях подзоны южной тайги Урала. The taxation indicators of plantations growing on the territory of the carbonic research polygon located in the Ural educational experimental forest enterorize (UEEF) of the Ural State Forest Engineering University were analyzed on the base of the forestry materials database. It is noted that the main forest formations on the polygons are pine and birch forest stands. The share of stands with other species of forest formers dominating in composition of forest stands is small. In addition to scots pine (Pinus sylvestris L.) and silver birch (Betula pendula Roth.), other species usually grow in admixtures with the specified. Among the stands mature and over mature stands of average density prevails. Most of the stands are characterized by relatively high bonitet classes. Plantations growing on the territory of the polygon belong to 13 types of forest, which indicates a variety of forest growing conditions. In general, it can be noted that the species diversity of tree species and forest growing conditions at the carboniferous research sity (UEEF) provides an opportunity to study a wide range of problems of carbon deposing forest ecosystems in conditions of the Southern Taiga subzone in the Urals.

scholarly journals Many-year Fluctuations of River Runoff in South-taiga Subzone of the Western Siberia

2013 ◽  
pp. 34-45
Author(s):  
Keyword(s):  
Western Siberia ◽  
River Flow ◽  
Atmospheric Precipitation ◽  
Southern Taiga ◽  
Low Flow ◽  
Groundwater Levels ◽  
Level Regime ◽  
Southern Taiga Subzone ◽  
Bog Water

A detailed analysis of river flow long-term changes in the Southern taiga subzone of Western Siberia has been carried out with the Chaya River basin as an example. Causal statistical analysis of changes in groundwater levels, bog water level, air temperature and atmospheric precipitation has been performed. The conducted studies revealed a statistically significant trend in the increase of surface runoff in the winter low flow of the Chaya River and its large tributaries (the Iksa and the Parbig), as well as the underground runoff component for virtually the entire year. An ambiguous regularity has been observed in the change of the level regime of rivers. The main reason for the observed changes in the water regime of the said territory is the redistribution of atmospheric moisture and shifting of the boundaries of hydrological seasons.

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