scholarly journals Sex-Specific Wolbachia Infection Patterns in Populations of Polygraphus proximus Blandford (Coleoptera; Curculionidae: Scolytinae)

Insects ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 547
Author(s):  
Roman Bykov ◽  
Ivan Kerchev ◽  
Marya Demenkova ◽  
Artem Ryabinin ◽  
Yury Ilinsky
Keyword(s):  
Russian Far East ◽  
Far East ◽  
West Siberia ◽  
Wolbachia Infection ◽  
Infected Female ◽  
Siberian Fir ◽  
Mitochondrial Haplotypes ◽  
Polygraphus Proximus ◽  
Males And Females ◽  
The Russian Far East

Wolbachia symbionts are maternally inherited bacteria that are widely distributed among Arthropoda hosts. Wolbachia influence their host biology in diverse ways. They may induce reproductive abnormalities, protect hosts against pathogens and parasites, or benefit hosts through metabolic provisioning. The progeny of an infected female are ordinarily infected with Wolbachia; however, Wolbachia have no future in male host progeny because they cannot transmit the symbiont to the next generation. Here, we analyze native and invasive populations of the four-eyed fir bark beetle (Polygraphus proximus) for Wolbachia prevalence and symbiont genetic diversity. This species is a dangerous pest of Siberian fir (Abies sibirica) forests. The native range of P. proximus includes the territories of the Russian Far East, Japan, Korea, and Northeast China, whereas its invasive range includes West Siberia, with further expansion westward. Surprisingly, we revealed a difference in the patterns of Wolbachia prevalence for males and females. Infection rate and Wolbachia titers were higher in females than in males. ST-533, the only haplotype of Wolbachia supergroup B, was associated with a minimum of three out of the five described mitochondrial haplotypes.

Tax debt as a threat to the economic security of the Russian Far East

2020 ◽  
Vol 13 (2) ◽  
pp. 216-242
Author(s):  
V.A. Yakimova ◽  
A.A. Orekhova
Keyword(s):  
Russian Far East ◽  
Consumer Price Index ◽  
Far East ◽  
Federal District ◽  
Economic Security ◽  
Factors Affecting ◽  
Correlation And Regression Analysis ◽  
Debt Collection ◽  
Far Eastern ◽  
The Russian Far East

Subject. The article addresses the tax liabilities of taxpayers registered in the subjects of the Far Eastern Federal District, which should be paid to the consolidated budget of the Russian Federation, as well as the factors of the said debt growth. Objectives. Our aim is to assess the level of tax debt of regions of the Russian Far East and identify the correlation between the factors and the amount of tax debt. Methods. The study rests on methods of analysis, generalization, grouping, systematization, and the correlation and regression analysis. Results. We analyzed the level of tax debt for the entire Far Eastern Federal District and by region, identified factors affecting the growth of tax debt therein. The paper assesses the structure of tax debt by type of taxes and activity of debtors. The unveiled factors may help control changes in the size of tax debt in the Russian Far East and develop effective measures to improve the debt collection. Conclusions. The study shows that there is an increase in the tax debt in the regions of the Russian Far East, in the VAT in particular. The factor analysis revealed that the volume of sales of wholesale enterprises, investment in fixed capital, the consumer price index have the largest impact on the amount of tax debt.

New records and rare alien species in the flora of the Russian Far East

2018 ◽  
Vol 65 ◽  
pp. 89-102
Author(s):  
Z.V. Kozhevnikova ◽  
◽  
A.E. Kozhevnikov ◽  
Keyword(s):  
Alien Species ◽  
New Records ◽  
Russian Far East ◽  
Far East ◽  
The Russian Far East

New invasive species Acanthoscelides pallidipennis (Motschulsky, 1874) (Coleoptera: Bruchidae) in the fauna of the Russian Far East

2018 ◽  
Vol 360 ◽  
pp. 25-28 ◽  
Author(s):  
A.V. Kuprin ◽  
◽  
N.A. Kolyada ◽  
D.G. Kasatkin ◽  
◽  
...  
Keyword(s):  
Invasive Species ◽  
Russian Far East ◽  
Far East ◽  
The Russian Far East

ON CHROMOSOME NUMBERS IN THE GRASS FAMILY (POACEAE) IN RUSSIA, WITH SPECIAL ATTENTION TO THE FAR EAST

2020 ◽  
Vol 68 ◽  
pp. 29-64
Author(s):  
N.S. Probatova ◽  
Keyword(s):  
Chromosome Numbers ◽  
Russian Far East ◽  
Far East ◽  
Grass Species ◽  
Original Material ◽  
Mountain Regions ◽  
Grass Family ◽  
The Far East ◽  
The World ◽  
The Russian Far East

The paper summarizes information on chromosome numbers (CNs) of the Grass species (Poaceae) in the flora of Russian Federation, obtained on the original material, most part - from the Russian Far East (RFE). In some species the CNs are known in Russia or in the world only from RFE, in some – from one locality or few, or from one subregion of RFE. The grass species in RFE often occur in mountain regions and near seacoasts; some species are endemics, some were studied near the limits of their geographical distribution areas. The diversity of CNs, the special features of the CNs distribution in some grass groups are discussed. The alien species are abundant in RFE, and their CNs are also involved in the study. For karyologically polymorphous species further studies are needed.

Устойчивые сорта корнеплодов в муссонном климате юга Дальнего Востока России

2018 ◽  
Author(s):  
Y.G. Mikheev ◽  
I.A. Vanyushkina ◽  
V.I. Leunov
Keyword(s):  
High Resistance ◽  
Geographical Origin ◽  
Russian Far East ◽  
Far East ◽  
Source Material ◽  
The South ◽  
Root Crops ◽  
The Russian Far East ◽  
Resistance To Diseases

Представлены результаты изучения исходного материала столовой моркови и свеклы разного эколого-географического происхождения по устойчивости к патогенной флоре. Для условий Дальнего Востока созданы высокопродуктивные, устойчивые к патогенам сорта и гибриды столовых корнеплодов.The article presents the results of the study of the source material of table carrots and beets of different ecological and geographical origin for resistance to diseases. Geniuses for breeding of high-productive variety samples of root crops with rather high resistance to diseases in the conditions of the South of the Russian Far East are revealed.

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