Description of the stridulatory apparatus of the Far Eastern bark beetles Polygraphus proximus Blandford, 1894 and P. jezoensis Niisima, 1909 (Coleoptera, Curculionidae: Scolytinae)

2015 ◽  
Vol 95 (9) ◽  
pp. 1191-1196 ◽  
Author(s):  
I. A. Kerchev
Keyword(s):  
Bark Beetles ◽  
Polygraphus Proximus ◽  
Stridulatory Apparatus ◽  
Far Eastern

scholarly journals Distribution pattern of entry holes of the tree-killing bark beetle Polygraphus proximus

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246812
Author(s):  
Shin-ya Takei ◽  
Kenta Köbayashi ◽  
Etsuro Takagi
Keyword(s):  
Distribution Pattern ◽  
Bark Beetle ◽  
Bark Beetles ◽  
Spatial Association ◽  
Distribution Patterns ◽  
Polygraphus Proximus ◽  
Spatially Homogeneous ◽  
Aggregated Distribution ◽  
Bark Texture ◽  
Far Eastern

Bark beetles attack their hosts at uniform intervals to avoid intraspecific competition in the phloem. Bark texture and phloem thickness also affect bark beetle attacks, and the bark characteristics are not spatially homogeneous; therefore, the distribution patterns of entry holes can demonstrate an aggregated distribution. Polygraphus proximus Blandford (Coleoptera: Scolytinae) is a non-aggressive phloephagous bark beetle that feeds on Far Eastern firs. They have caused mass mortality in Russia and Japan. However, the distribution pattern of entry holes of P. proximus and spatial relationships with bark characteristics have not been studied. Thus, we investigated the distribution pattern of entry holes of P. proximus. The distribution of entry holes was significantly uniform in most cases. As the attack density increased, an aggregated distribution pattern within a short distance (< 4.0 cm) was observed. The rough bark had a significantly higher number of entry holes than the remaining bark. The distribution pattern of entry holes demonstrated a significantly aggregated spatial association with rough bark. Finally, rough bark around knots had significantly thicker phloem than the remaining barks. These suggest that P. proximus may preferentially attack rough bark to reproduce in the thicker phloem under a rough bark surface.

scholarly journals Bark beetle associated trematurid mites (Acari: Uropodina: Trematuridae) from Asian Russia with description of a new species

2019 ◽  
Vol 24 (9) ◽  
pp. 1592-1603 ◽  
Author(s):  
Jeno Kontschán ◽  
Gábor Szőcs ◽  
Balázs Kiss ◽  
Alexander A. Khaustov
Keyword(s):  
New Species ◽  
Bark Beetle ◽  
Bark Beetles ◽  
Beetle Species ◽  
New Associations ◽  
Polygraphus Proximus ◽  
Associated Species ◽  
A New Species ◽  
Different Parts

A new Oodinychus Berlese, 1917 species, O. scolytana sp. nov., was discovered and described from the galleries of bark beetles Polygraphus proximus Blandford from two different parts of Asian Russia. New associations are given for the trematurid mites and bark beetle species. Three bark beetle associated species from the Trichouropoda ovalis-group are moved into the genus Oodinychus as O. hirsuta (Hirschmann, 1972) comb. nov., O. rafalski (Wiśniewski & Hirschmann, 1984) comb. nov. and O. wilkinsoni (Hirschmann &Wiśniewski, 1986) comb. nov. Also, Oodinychus egypticus Abo-Shnaf, El-Bishlawy & Allam, 2018 is transferred to the genus Nenteria Oudemans, 1915.

FINDING OF THE BARK BEETLE POLYGRAPHUS PROXIMUS BLANDFORD, 1894 (COLEOPTERA, CURCULIONIDAE: SCOLYTINAE) IN UDMURTIA

2021 ◽  
Vol 14 (2) ◽  
pp. 32-39
Author(s):  
S. V. Dedyukhin ◽  
V. V. Titova
Keyword(s):  
Bark Beetle ◽  
Natural Forests ◽  
Siberian Fir ◽  
Longhorn Beetles ◽  
Polygraphus Proximus ◽  
Udmurt Republic ◽  
Local Species ◽  
The Republic ◽  
Far Eastern

The data on the first finds in the Udmurt Republic (and the East of European Russia as a whole) of a dangerous invasive species of bark beetle of the Far Eastern origin - Polygraphus proximus Blandford, 1894, are presented. The species was discovered in 2019 simultaneously in four districts (Zavyalovsky, Malopurginsky, Kiyasovsky and Sarapulsky) of the central and southern parts of the republic. The established areas damaged by the Polygraphus proximus of forest stands are located both near railway tracks and highways, and in the depths of natural forests in which Siberian fir grows ( Abies sibirica Ledeb.), which indicates a long-term hidden invasion of the pest and its adaptation in Udmurtia. Further outbreak of the pest can lead to catastrophic consequences for forests with the participation of fir in the region. In addition, in the stands damaged by the Polygraphus proximus , an increase in the number of local species of longhorn beetles, associated with fir, is possible. In connection with the extreme potential harmfulness of this invader, it is necessary to carry out sanitary and recreational activities in order to localize and eliminate the identified outbreak foci of the pest, as well as to clarify the forest areas occupied by the Polygraphus proximus in the territory of the Udmurt Republic and adjacent regions, with introduction of quarantine and monitoring measures.

A review of histiostomatid mites associated with scolytine bark beetles (Coleoptera: Curculionidae), with a description of Histiostoma shiramba sp. n. (Acari: Histiostomatidae) from galleries of the Sakhalin-fir bark beetle Polygraphus proximus 

2018 ◽  
Vol 23 (12) ◽  
pp. 2373
Author(s):  
Pavel B. Klimov ◽  
A.A. Khaustov
Keyword(s):  
New Species ◽  
Bark Beetle ◽  
Bark Beetles ◽  
Large Scale ◽  
Developmental Stages ◽  
Fungal Spores ◽  
Mite Species ◽  
Species Group ◽  
Invasive Pest ◽  
Polygraphus Proximus

Associations of scolytine bark beetles (Coleoptera: Curculionidae: Scolytinae) and histiostomatid mites (Acari: Histiostomatidae) are reviewed. Histiostomatids are associated with a total of 62 described species of bark beetles in 31 countries of the world, except for South America and Antarctica (262 non-redundant records). Non-accidental records include 21 mite species in the genus Histiostoma and 5 species in the Bonomoia/Probonomoia generic complex. The biological role of histiostomatids associated with bark beetles is largely unknown and needs further investigation. Available observations suggest that histiostomatids living in bark beetle galleries may feed on different fungi, including those pathogenic to the tree host and/or may serve as food supplement for developing bark beetle larvae (e.g., the fungal genus Ophiostoma). However, based on their mouthpart morphology, instead of feeding on fungi directly, histiostomatids may reduce fungal population sizes by releasing fungicides produced by their opisthonotal glands. Both feeding and phoretic stages of the mites commonly vector considerable numbers of fungal spores or conidia, including those of phloem-infesting, blue stain fungi (e.g., Ophiostoma, Ceratocystis, and Alternaria). Here we describe all developmental stages of a new species of the genus Histiostoma, belonging to the piceae-species group that includes many mite species associated with bark beetles. The new species, Histiostoma shiramba sp. n., was found in the galleries of the Sakhalin-fir bark beetle, Polygraphus proximus, an invasive pest that is quickly spreading outside of its native range in the Eastern Palaearctic, causing large-scale destruction of fir forests. We emend the following names (nom. emend.) to agree in gender with the generic name Histiostoma (gender neuter): Histiostoma capillatum, H. conjunctum, H. hungaricum, H. indetonsum, H. irinum, H. longisetum, H. margaritatum, H. medium, H. ovale, H. pannonicum, H. serratum, H. sordidum, H. spinosum, H. sylvestre, H. varium, H. virginianum. The name Histiostoma scheucheri is emended to Histiostoma scheucherae.

A new species and a new record of raphignathoid mites (Acari: Raphignathoidea: Camerobiidae, Stigmaeidae) occurring in the galleries of bark beetles (Coleoptera: Curculionidae: Scolytinae) from Russia

2017 ◽  
Vol 22 (9) ◽  
pp. 1385 ◽  
Author(s):  
Alexander Khaustov ◽  
Vladimir Abramov
Keyword(s):  
New Species ◽  
Bark Beetles ◽  
New Record ◽  
Western Siberia ◽  
European Russia ◽  
Female Larva ◽  
Polygraphus Proximus ◽  
First Time ◽  
A New Species

Female, larva and protonymph of a new species, Neophyllobius abiegnus sp. nov., collected in the galleries of Pityophthorus micrographus (Linnaeus) (Coleoptera: Curculionidae: Scolytinae) in European Russia are described. Protonymph of Neophyllobius sp. is recorded from Crimea in the galleries of Pityogenes bistridentatus (Eichhoff). Stigmaeus mitrofanovi Khaustov, 2014 is recorded from Western Siberia in the galleries of bark beetles Polygraphus proximus Blandford and Polygraphus subopacus Thomson for the first time from Asia.

Principles for assessing forest management risks associated with natural hazards

2021 ◽  
Vol 19 (1) ◽  
pp. 169-198
Author(s):  
Elena S. VOLKOVA ◽  
Mariya A. MEL'NIK ◽  
Sergei A. MEL'NIK
Keyword(s):  
Forest Management ◽  
Natural Hazards ◽  
Bark Beetles ◽  
Timber Harvesting ◽  
Economic Damage ◽  
Special Equipment ◽  
Resource Potential ◽  
Scientific Principles ◽  
Polygraphus Proximus ◽  
General Scientific

Subject. This article examines the risks associated with the loss of ecological and resource potential of forests, and those affecting timber harvesting activities. Objectives. The article aims to develop and test methodological approaches and principles for assessing risks to certain forest management types associated with natural hazards. Methods. For the study, we used the methods of general scientific research, statistical, comparative, logical, and geoinformation analyses. Results. The article presents a developed method of calculating the environmental and economic damage to the fir forests of Western Siberia as a result of the invasion of bark beetles, Polygraphus proximus Blandford. It describes the main natural factors that disrupt the operation of special equipment and the conditions for harvested wood transportation and assesses the most likely risks of logging activities in winter. The testing of a comprehensive assessment of forest risks at the regional level shows the region's area differences in terms of risk both for individual natural hazard factors and in their totality. Conclusions. Forest management risk analysis can be successfully implemented through using methods based on general scientific principles. Specially designed approaches should be used to address narrowly focused industry challenges.

Resource Constituent of Russian Regional Economy

2007 ◽  
pp. 116-132 ◽  
Author(s):  
S. Kimelman ◽  
S. Andyushin
Keyword(s):  
Economic Policy ◽  
Economic Development ◽  
Russian Federation ◽  
Regional Economy ◽  
Federal District ◽  
Economic Potential ◽  
Resource Model ◽  
The Social ◽  
Regional Economic Policy ◽  
Far Eastern

The article basing upon estimation of the social and economic potential of Russian Federation subjects shows that the resource model of economic development is suitable for nearly half of them. The advantages of this model are described using the example of the Far Eastern Federal District subjects that could be the proof of the necessity of "resource correction" of regional economic policy in Russia.

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