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Publisher: Springer-Verlag   (Total: 2279 journals)

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Diabetologia Notes de lecture     Hybrid Journal  
Diabetology Intl.     Hybrid Journal   (Followers: 1, SJR: 0.273, h-index: 5)
Dialectical Anthropology     Hybrid Journal   (Followers: 9, SJR: 0.314, h-index: 9)
Die Weltwirtschaft     Hybrid Journal   (Followers: 2)
Differential Equations     Hybrid Journal   (Followers: 2, SJR: 0.364, h-index: 15)
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 1, SJR: 0.63, h-index: 7)
Digestive Diseases and Sciences     Hybrid Journal   (Followers: 4, SJR: 1.19, h-index: 89)
Directieve therapie     Hybrid Journal  
Discrete & Computational Geometry     Hybrid Journal   (Followers: 3, SJR: 1.269, h-index: 40)
Discrete Event Dynamic Systems     Hybrid Journal   (Followers: 3, SJR: 0.42, h-index: 32)
Distributed and Parallel Databases     Hybrid Journal   (Followers: 4, SJR: 0.766, h-index: 30)
Distributed Computing     Hybrid Journal   (Followers: 2, SJR: 1.41, h-index: 31)
DNP - Der Neurologe und Psychiater     Full-text available via subscription  
Documenta Ophthalmologica     Hybrid Journal   (Followers: 2, SJR: 0.946, h-index: 40)
Doklady Biochemistry and Biophysics     Hybrid Journal   (Followers: 2, SJR: 0.2, h-index: 10)
Doklady Biological Sciences     Hybrid Journal   (SJR: 0.248, h-index: 10)
Doklady Botanical Sciences     Hybrid Journal  
Doklady Chemistry     Hybrid Journal   (SJR: 0.272, h-index: 12)
Doklady Earth Sciences     Hybrid Journal   (SJR: 0.48, h-index: 17)
Doklady Mathematics     Hybrid Journal   (SJR: 0.345, h-index: 13)
Doklady Physical Chemistry     Hybrid Journal   (SJR: 0.299, h-index: 12)
Doklady Physics     Hybrid Journal   (Followers: 1, SJR: 0.293, h-index: 17)
Douleur et Analg├ęsie     Hybrid Journal   (SJR: 0.113, h-index: 6)
Drug Delivery and Translational Research     Hybrid Journal   (Followers: 2, SJR: 0.607, h-index: 8)
Drug Safety - Case Reports     Open Access   (Followers: 1)
Drugs : Real World Outcomes     Hybrid Journal   (Followers: 2)
Dynamic Games and Applications     Hybrid Journal   (Followers: 2, SJR: 0.481, h-index: 5)
Dysphagia     Hybrid Journal   (Followers: 85, SJR: 0.822, h-index: 52)
e & i Elektrotechnik und Informationstechnik     Hybrid Journal   (Followers: 9, SJR: 0.279, h-index: 9)
e-Neuroforum     Hybrid Journal  
Early Childhood Education J.     Hybrid Journal   (Followers: 13, SJR: 0.466, h-index: 16)
Earth Science Informatics     Hybrid Journal   (Followers: 3, SJR: 0.282, h-index: 7)
Earth, Moon, and Planets     Hybrid Journal   (Followers: 7, SJR: 0.303, h-index: 29)
Earthquake Engineering and Engineering Vibration     Hybrid Journal   (Followers: 7, SJR: 0.482, h-index: 21)
Earthquake Science     Hybrid Journal   (Followers: 8, SJR: 0.418, h-index: 9)
East Asia     Hybrid Journal   (Followers: 8, SJR: 0.18, h-index: 9)
Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity     Hybrid Journal   (Followers: 13, SJR: 0.362, h-index: 27)
EcoHealth     Hybrid Journal   (Followers: 3, SJR: 0.88, h-index: 26)
Ecological Research     Hybrid Journal   (Followers: 8, SJR: 0.847, h-index: 43)
Economia e Politica Industriale     Hybrid Journal  
Economia Politica     Hybrid Journal   (SJR: 0.375, h-index: 6)
Economic Botany     Hybrid Journal   (Followers: 8, SJR: 0.527, h-index: 44)
Economic Bulletin     Hybrid Journal   (Followers: 4)
Economic Change and Restructuring     Hybrid Journal   (SJR: 0.264, h-index: 9)
Economic Theory     Hybrid Journal   (Followers: 16, SJR: 2.557, h-index: 34)
Economic Theory Bulletin     Hybrid Journal   (Followers: 2)
Economics of Governance     Hybrid Journal   (Followers: 2, SJR: 0.408, h-index: 14)
Ecosystems     Hybrid Journal   (Followers: 23, SJR: 1.909, h-index: 93)
Ecotoxicology     Hybrid Journal   (Followers: 9, SJR: 1.333, h-index: 56)
Education and Information Technologies     Hybrid Journal   (Followers: 72, SJR: 0.366, h-index: 16)
Educational Assessment, Evaluation and Accountability     Hybrid Journal   (Followers: 17, SJR: 0.374, h-index: 15)
Educational Psychology Review     Hybrid Journal   (Followers: 20, SJR: 2.776, h-index: 61)
Educational Research for Policy and Practice     Hybrid Journal   (Followers: 8, SJR: 0.273, h-index: 9)
Educational Studies in Mathematics     Hybrid Journal   (Followers: 14, SJR: 0.825, h-index: 32)
Educational Technology Research and Development     Partially Free   (Followers: 62, SJR: 1.785, h-index: 52)
Electrical Engineering     Hybrid Journal   (Followers: 16, SJR: 0.336, h-index: 18)
Electrocatalysis     Hybrid Journal   (SJR: 0.883, h-index: 10)
Electronic Commerce Research     Hybrid Journal   (Followers: 3, SJR: 0.582, h-index: 16)
Electronic Markets     Hybrid Journal   (Followers: 5, SJR: 0.411, h-index: 8)
Electronic Materials Letters     Hybrid Journal   (Followers: 3, SJR: 1.407, h-index: 15)
Elemente der Mathematik     Hybrid Journal   (Followers: 1)
Emergency Radiology     Hybrid Journal   (Followers: 5, SJR: 0.678, h-index: 25)
Emission Control Science and Technology     Hybrid Journal   (Followers: 1)
Empirica     Hybrid Journal   (Followers: 3, SJR: 0.319, h-index: 16)
Empirical Economics     Hybrid Journal   (Followers: 8, SJR: 0.489, h-index: 31)
Empirical Software Engineering     Hybrid Journal   (Followers: 7, SJR: 1.285, h-index: 39)
Employee Responsibilities and Rights J.     Hybrid Journal   (Followers: 3, SJR: 0.361, h-index: 15)
Endocrine     Hybrid Journal   (Followers: 7, SJR: 0.878, h-index: 57)
Endocrine Pathology     Hybrid Journal   (Followers: 2, SJR: 0.638, h-index: 31)
Energy Efficiency     Hybrid Journal   (Followers: 14, SJR: 0.732, h-index: 14)
Energy Systems     Hybrid Journal   (Followers: 14, SJR: 1.176, h-index: 7)
Engineering With Computers     Hybrid Journal   (Followers: 5, SJR: 0.433, h-index: 30)
Entomological Review     Hybrid Journal   (Followers: 7, SJR: 0.144, h-index: 5)
Environment Systems & Decisions     Hybrid Journal   (Followers: 2)
Environment, Development and Sustainability     Hybrid Journal   (Followers: 32, SJR: 0.419, h-index: 29)
Environmental and Ecological Statistics     Hybrid Journal   (Followers: 6, SJR: 0.458, h-index: 32)
Environmental and Resource Economics     Hybrid Journal   (Followers: 18, SJR: 1.632, h-index: 54)
Environmental Biology of Fishes     Hybrid Journal   (Followers: 5, SJR: 0.725, h-index: 58)
Environmental Chemistry Letters     Hybrid Journal   (Followers: 2, SJR: 0.741, h-index: 28)
Environmental Earth Sciences     Hybrid Journal   (Followers: 12, SJR: 0.724, h-index: 63)
Environmental Economics and Policy Studies     Hybrid Journal   (Followers: 5, SJR: 0.524, h-index: 4)
Environmental Evidence     Open Access   (Followers: 1)
Environmental Fluid Mechanics     Hybrid Journal   (Followers: 3, SJR: 0.437, h-index: 24)
Environmental Geochemistry and Health     Hybrid Journal   (Followers: 3, SJR: 1.013, h-index: 36)
Environmental Geology     Hybrid Journal   (Followers: 11)
Environmental Health and Preventive Medicine     Hybrid Journal   (Followers: 3, SJR: 0.522, h-index: 19)
Environmental Management     Hybrid Journal   (Followers: 38, SJR: 0.942, h-index: 66)
Environmental Modeling & Assessment     Hybrid Journal   (Followers: 11, SJR: 0.533, h-index: 31)
Environmental Monitoring and Assessment     Hybrid Journal   (Followers: 23, SJR: 0.685, h-index: 52)
Environmental Science and Pollution Research     Hybrid Journal   (Followers: 14, SJR: 0.885, h-index: 46)
Epileptic Disorders     Hybrid Journal   (SJR: 0.608, h-index: 38)
EPJ A - Hadrons and Nuclei     Hybrid Journal   (Followers: 1, SJR: 1.287, h-index: 63)
EPJ B - Condensed Matter and Complex Systems     Hybrid Journal   (Followers: 2, SJR: 0.731, h-index: 89)
EPJ direct     Hybrid Journal  
EPJ E - Soft Matter and Biological Physics     Hybrid Journal   (Followers: 1, SJR: 0.641, h-index: 62)
EPMA J.     Open Access   (SJR: 0.284, h-index: 6)
ERA-Forum     Hybrid Journal   (Followers: 3, SJR: 0.128, h-index: 3)
Erkenntnis     Hybrid Journal   (Followers: 15, SJR: 0.621, h-index: 16)
Erwerbs-Obstbau     Hybrid Journal   (SJR: 0.206, h-index: 9)
Esophagus     Hybrid Journal   (SJR: 0.311, h-index: 10)

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Journal Cover Entomological Review
  [SJR: 0.144]   [H-I: 5]   [7 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1555-6689 - ISSN (Online) 0013-8738
   Published by Springer-Verlag Homepage  [2279 journals]
  • A technological approach to the description of group foraging in the ant
           Myrmica rubra
    • Abstract: Abstract Group foraging in Myrmica rubra ants is considered as a cyclic process in which transition from one phase to another is determined by summation of actions of individual ants inside the nest and in the foraging territory. In its turn, individual behavior is considered as a labile sequence of tasks, such as territory exploration, acquiring and transportation of food, the completeness of the sequence depending on the individual experience. Data on foraging of three experimental M. rubra colonies were represented as a relational database in MS Access 2007, and the database tools were used to study the interrelated characteristics of the two levels of the foraging process (group and individual) and to analyze the quantitative parameters of individual and group behavior.
      PubDate: 2015-11-01
       
  • Crematogaster subdentata Mayr, 1877, a potentially invasive species of ant
           (Hymenoptera, Formicidae) new to the fauna of crimea
    • Abstract: Abstract A population of a new to Crimea and potentially invasive ant species, Crematogaster subdentata Mayr, 1877, has been found in Mikhailovka Village of Saki District (the Crimean Peninsula). The species may have been introduced to Crimea from Central Asia. The study addresses the ecology and behavior of C. subdentata that inhabits the newly invaded region, including the time-dependent density of its colonies, the structure of foraging areas, the daily activity cycle, and control measures. The invasion began 9–12 years ago. There are 4 settlements discovered that differ in their age and the structure of the foraging area. C. subdentata can be considered a potentially dangerous invader that is capable of doing significant damage to the biocenoses of forests, parks, and gardens, as well as to wooden buildings.
      PubDate: 2015-11-01
       
  • A theoretical approach of S. I. Malyshev to the evolution of behavior
    • Abstract: Abstract In his book The Genesis of Hymenoptera and Phases of Their Evolution, S.I. Malyshev not only examined the evolution of the behavior of Hymenoptera but also implicitly presented an original theoretical approach to the evolution of species-specific behavior in general. This article suggests a reconstruction of this theoretical approach. The phases of evolution of the Hymenoptera singled out by Malyshev do not conform to specific taxa. They are regular phases of evolution of behavior as a integral functional system. In the same way, Malyshev develops his hypothesis of the origin of ants and bees, distinguishing transitional behavior phases from the solitary life of the Hymenoptera to the social organization of bees and ants.
      PubDate: 2015-11-01
       
  • Diversity of phytophagous beetles (Coleoptera: Chrysomeloidea,
           Curculionoidea) in steppe communities in the forest-steppe of the High
           Trans-Volga region
    • Abstract: Abstract A total of 551 species from 10 families of phytophagous beetles (superfamilies Chrysomeloidea and Curculionoidea) have been recorded in the steppe communities of the High Trans-Volga forest-steppe zone, 62% of which belong to the steppe landscape-geographic complex. The vast majority of the species belong to three families: Curculionidae (254 species; 46%), Chrysomelidae (186 species; 34%), and Apionidae (51 species; 9%). The regional steppe fauna has a complex arealogical structure combining the Western Scythian and Sarmatian elements, as well as relict species of the Angarian origin and some Eastern European ones. The highest diversity of phytophagous beetles is observed in the zonal meadow steppe communities (299 species; 54%). The most specific are the petrophilous steppe complexes which also include the greatest number of relict forms. Xerophilous Kazakhstan- Turanian species are mostly concentrated in the saline steppe communities of the southernmost forest-steppe zone. The species diversity is also high (249 species) in the open ruderal communities dominated by species characteristic of the pioneer stages of the steppe successions. Some steppe reservations include over 50% of the entire regional fauna of phytophagous beetles. The species diversity in the steppe localities decreases northward due to a gradual decrease in the number and proportion of the Scythian species: from 55% in the middle of the foreststeppe zone to 36% near its northern boundary. The species diversity of the slope communities in the forest-steppe zone is at least not lower than that in the similar areas of the steppe zone. The ratio of the number of Curculionoidea species to that of plant species is very high, reaching about 3: 4 in the model steppe localities of the High Trans-Volga forest-steppes, as compared to 1: 2 in the zonal steppe communities (according to the published data). The data considered confirm the significance of the forest-steppe zone as an important biodiversity center in the East European Plain and as a reservation of relicts of different origins.
      PubDate: 2015-11-01
       
  • Classification of ant nest complexes
    • Abstract: Abstract The nest complex is an intrinsic form of spatial and functional organization of ants, a real structural level of an intrapopulation rank. The proposed classification of ant nest complexes is based on the properties of the elements composing the complexes and on scenarios of settlement development. The stages of life of an ant settlement and the stages of development of the corresponding complex are described (the proto-, meso-, and hypercomplex). The following main species-specific features are used in the classification: the basic level of intracolonial structures (clan, column, pleiad); the nest type (sectional, capsule-like); the mode of colony founding (solitary queen, pleometrosis, temporary social parasitism); the mode of sociotomy (binary division, budding, fragmentation); the definitive colony size (N c ); the presence of a defended territory; the form of polycaly (simple polycaly: PC 1, polycaly with breeding nests: PC 2, polysectional nests: PSN), etc. Based on the data on 120 ant species (including all the well-studied ones) showing clear differentiation into gynes and workers, eight basic social types are distinguished, which are named by their most specific traits: (1) recurrent sociotomy based on a clan; (2) diffuse polycaly; (3) recurrent sociotomy based on a single colony (column); (4) closed (ordinary) polycaly; (5) open (obligate) polycaly; (6) linear settlements; (7) dissipated pleiads; (8) unitary pleiads. The general description of an ant nest complex includes its social type, development stage, and current state. The classification of nest complexes forms the basis for systemic study, use, and protection of ants.
      PubDate: 2015-11-01
       
  • The genus Osmoderma (Coleoptera, Scarabaeidae, Trichiinae) in Siberia and
           the Russian Far East
    • Abstract: Abstract A review of the species of the genus Osmoderma of Siberia and the Russian Far East is given. The species Osmoderma opicum coreanum Tauzin, 2013 was first identified in the fauna of Russia. The locality of O. davidis Fairmaire, 1887 in Buryatia, which was confirmed by material, is presented. The distribution of the East Asian species of this genus in the territory of Russia is analyzed in detail. The data on the phenology, trophic associations, and topical preferences are considered.
      PubDate: 2015-11-01
       
  • The multispecies formicary association: the transition from an incomplete
           to a complete association
    • Abstract: Abstract This work describes the transformation of the nest complex of a facultatively dominant species, Formica cunicularia, which was naturally colonized by the families of obligate dominants, Formica pratensis and Lasius fuliginosus. The complex was under observation from 2003 to 2013. During this period, F. pratensis families almost completely replaced F. cunicularia in the tenth part of the territory of this multispecies association. The family L. fuliginosus did not exert such an effect on the settlement of the facultative dominant. The study addresses the interaction of foragers of the species that found themselves in the zone of F. pratensis invasion, the dynamics of expansion of the dominant’s foraging areas, and the changes in the multispecies formicary association on the whole. It is shown that, even with different peaceful coexistence mechanisms at work, the alteration of the association occurs through attacks of the obligate dominant on the neighboring families. The progress of this process and possible key situations are considered.
      PubDate: 2015-11-01
       
  • Complexes of Formica s. str. nests in the Darwin Nature Reserve and causes
           of their degradation
    • Abstract: Abstract Nest complexes of Formica ants were studied in the Darwin Nature Reserve, in Rybinsk Reservoir basin (Vologda and Yaroslavl Provinces). A strong negative influence of wild boars was demonstrated based on the data of 1997–2012. Boars damage ant nests, which may lead to their complete destruction. The adverse influence of boars is intensified in the years with high water levels in the reservoir, when the boars cannot feed in the temporary inundation zone and thus increase their impact on the forest and ant nests. Due to the long succession of highwater years since 2004 and the resulting strong impact of wild boars, the number and size of ant nests drastically decreased, and the abundance and biomass of Formica ants in forest ecosystems were reduced.
      PubDate: 2015-11-01
       
  • Notes on the tribe Rhotalini (Homoptera, Achilidae) with analysis of the
           hind-wing venation and redescription of the genus Taractellus metcalf from
           Chile
    • Abstract: Abstract The genus Taractellus Metcalf is redescribed based on new material; its position in the family Achilidae and in the tribe Rhotalini is confirmed. The evolutionarily labile anastomosis of the medial and anterocubital veins of the hind wing in the representatives of Achilidae and in the other Fulgoroidea is analyzed.
      PubDate: 2015-11-01
       
  • Changes in range boundaries of the gypsy moth and the nun moth ( Lymantria
           dispar, L. monacha , Lymantriidae, Lepidoptera) due to the global warming:
           a model approach
    • Abstract: Abstract Modeling of the gypsy moth and nun moth ranges using climatic predictors and the updated climate database suggested potential consequences of the observed climate changes for these economically important insects. The climate changes during 1981–2010, as compared to those during 1951–1980, have predetermined a considerable northward and eastward expansion of these moths. New areas climatically suitable for the gypsy moth but isolated from its main range have appeared in Eastern Siberia, in the Aldan Upland region and to the north of Lake Baikal up to 60°N. The greatest expansion of the nun moth range was observed in the Lena Plateau and northern Aldan Upland regions. Some insignificant reduction of its range was found only in Altai. Merging of the Euro-Siberian and Far Eastern parts of the nun moth range is also possible.
      PubDate: 2015-11-01
       
  • Interpretation of postglacial recolonization of Formica aquilonia
           (Hymenoptera, Formicidae) in Fennoscandia according to workers’
           color variation
    • Abstract: Abstract The results of studying the color variation of the red wood ant F. aquilonia in Northwestern Russia and Fennoscandia are presented. Pronounced phenotypic differentiation among the ant populations was observed, which may be interpreted in the light of postglacial dispersal of the species. Ants from Karelia and the environs of Moscow showed high similarity in their color variation. The share of the light morph Pn3 increased in more northern localities, namely the Pasvik Reserve, and also in more western ones, namely St. Petersburg and Espoo. Thus, there were two vectors of ant dispersal: the northern and the western ones, coinciding with the known routes of postglacial recolonization by small mammals. Analysis of color variation is a very promising approach to the study of intraspecific structure and ways of its formation.
      PubDate: 2015-11-01
       
  • New and little-known crickets of the subfamily phalangopsinae (Orthoptera,
           Gryllidae). 9. The african genus Phaeophilacris
    • Abstract: Abstract The genus Phaeophilacris Walk. is divided into two subgenera: Phaeophilacris s. str. and Speluncacris Sjöst. The latter name, originally proposed as a generic one and synonymized with Phaeophilacris s. l., is restored as a subgeneric name. The former genera Opilionacris Sjöst. and Cavernacris Sjöst. previously synonymized with Phaeophilacris s. l. are considered as synonyms of the subgenus Speluncacris. Four new species (Ph. (S.) malawi sp. n., Ph. (S.) boldyrevi sp. n., Ph. (S.) dmitrievi sp. n., and Ph. (S.) gigantea sp. n.) and three new subspecies (Ph. (S.) bredoides mangochi subsp. n., Ph. (S.) bredoides mutinondo subsp. n., and Ph. (Ph.) townsendi aethiopica subsp. n.) of the genus Phaeophilacris are described.
      PubDate: 2015-11-01
       
  • Gallogenesis induced by eryophyoid mites (Acariformes: Eriophyoidea)
    • Abstract: Abstract A review of the latest data on the problem of gall formation on plants under the influence of eryophyoid mites of the superfamily Eriophyoidea is given. Gall formation is induced in epidermal cells and includes a complicated growth reaction appearing as a response to the injection of mite saliva. The nature of gall-inducing agents is unknown. The role of such agents could be played by specific mite saliva factors affecting plant cell proliferation (e.g., plant hormones, probably secreted by mites) and microbial plant pathogens. Differences in the external gall structure are primarily determined by the mite species. Variability of galls is limited to several basic shapes that had probably appeared as convergent structures in phylogenetically remote plant hosts. A new renovated classification of types of damage caused by eryophyoid mites on plants is assumed on the basis of the following characters: the number of plant organs involved in the pathological process, duration of the existence of the damage and of the mite colony inside it, and localization of damage on the plant (topography). A step-by-step program for further studies of gall formation is substantiated.
      PubDate: 2015-11-01
       
  • Zygogramma suturalis (Coleoptera, Chrysomelidae) in the South of the
           Russian Far East (Primorskii Territory): Results of introduction
    • Abstract: Abstract The history of introduction and the current state of the populations and habitats of Zygogramma suturalis (Fabricius, 1775) in Primorskii Territory are reviewed. The introduction of Z. suturalis to the Russian Far East is shown to have failed to produce the desired result. After 30 years, the abundance of this species in Primorskii Territory is low and stable, increasing the importance of the use of native species (Neocrepidodera obscuritarsis and Chrysolina aurichalcea) in biological control.
      PubDate: 2015-11-01
       
  • Zygaenidae (Lepidoptera) of Omsk Province
    • Abstract: Abstract The fauna of the family Zygaenidae of Omsk Province is reviewed. 12 species are listed, among which 7 are recorded from this territory for the first time.
      PubDate: 2015-11-01
       
  • A review of the genus Gnaptor Brullé, 1832 (Coleoptera,
           Tenebrionidae) with description of a new species from Turkey
    • Abstract: Abstract The new species Gnaptor medvedevi sp. n. is described from southwestern Turkey. The new species is closely related to G. spinimanus but differs from it in narrower parameres, in the structure of the spiculum gastrale, and in the sculpture of the prothoracic hypomera. The new monotypical subgenus Plesiognaptor subgen. n. is described for G. prolixus; the distribution of each species is described. New data on the range of G. prolixus are added. This species is known from Turkey (Izmir, Aydin, Afyon, Konya, and Isparta provinces) and Iran (Elburs, the first record for the country). A key to and illustrations for all the species of the genus Gnaptor are given.
      PubDate: 2015-11-01
       
  • Contribution to the weevil fauna (Coleoptera, Curculionoidea) of Turkey
    • Abstract: Abstract 37 species of the weevil families Brentidae, Apionidae, Nanophyidae, Dryophthoridae, Erirhinidae, and Curculionidae are recorded for Turkey or for the Asian part of the country, most of them, for the first time. Some of the species are also newly recorded for other countries.
      PubDate: 2015-11-01
       
  • Cold hardiness of the arctic ensign scale Arctorthezia cataphracta
           (Homoptera, Ortheziidae) in the Northeast of Asia
    • Abstract: Abstract Cold hardiness of the Arctic ensign scale Arctorthezia cataphracta, which is widely distributed in the Holarctic and penetrates farther north than any other scale insect up to zonal tundra, was studied in the upper Kolyma River basin. Similar to other representatives of the suborder, A. cataphracta overwinters at different developmental stages, which does not require completion of the life cycle during one warm season and reduces its dependence on the amount of heat during summer. Similar to the other scale insects studied, A. cataphracta cannot survive soft tissue freezing and overwinters in the supercooled state. The mean supercooling point equals–32°C, the lowest tolerable temperature under long-term exposure is about–25°C, and the content of antifreeze polyols is up to 7%. These characteristics are closer to those of some boreal scale insects, whose northern distribution boundaries lie much farther south. The successful expansion of this species to the north is facilitated by its feeding on fungal hyphae and overwintering in the microhabitats sheltered beneath the vegetation cover and snow.
      PubDate: 2015-11-01
       
  • Influence of soddy-podzolic soil improvement on the abundance and
           structure of complexes of epigeic predatory beetles (Coleoptera:
           Carabidae, Staphylinidae) in Northwestern Russia
    • Abstract: Abstract Improvement of soddy-podzolic soils results in an increase of species richness and abundance of the most common epigeic predatory ground beetle and rove beetle species (Coleoptera: Carabidae, Staphylinidae) in the agrocenoses of Northwestern Russia.
      PubDate: 2015-11-01
       
  • Nest-building in ants Formica exsecta (Hymenoptera, Formicidae)
    • Abstract: Abstract Representatives of the subgenus Coptoformica build composite aboveground nests in much the same manner as red wood ants do. However, despite the superficial similarity, Coptoformica nests show a number of substantial differences that impact on the way in which ants use the nest. The aboveground part of a Formica (Coptoformica) exsecta nest consists of the temporary layer, the outer crust layer, the mound, and the intermediate layer. The material of all the layers includes soil and fragments of plants (picked up or excised), the relative proportion of the two components differing among the layers. The thick, soil-rich crust layer acts as armature and allows a variety of anthill shapes. The intermediate layer and the upper part of the mound harbor quite a few large chambers. Building material is often transferred from nest to nest. On the whole, F. exsecta nests are plastic and movable, which facilitates the activity of these ants in ecotone biotopes.
      PubDate: 2015-11-01
       
 
 
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