A5048475781- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Marine and environmental studies
- Genomics and Phylogenetic Studies
- Avian ecology and behavior
- Environmental and Biological Research in Conflict Zones
- Study of Mite Species
- Collembola Taxonomy and Ecology Studies
- Ecology and biodiversity studies
- Food Industry and Aquatic Biology
- Geological Studies and Exploration
- Radioactive contamination and transfer
- Invertebrate Taxonomy and Ecology
- Animal Behavior and Reproduction
- Aquatic and Environmental Studies
- Bird parasitology and diseases
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Indigenous Studies and Ecology
- Wildlife Ecology and Conservation
- Methane Hydrates and Related Phenomena
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Polar Research and Ecology
- Soil and Environmental Studies
Murmansk Marine Biological Institute
2004-2025
St Petersburg University
2014-2023
Lomonosov Moscow State University
1990-2022
Kursk State Agricultural Academy named after Professor II Ivanova
2021
Siberian Federal University
2015-2020
Institute of Geography
2020
Russian Academy of Sciences
2003-2018
Southern Scientific Center
2006-2018
Kola Science Centre
2013
Moscow State University
2008
Abstract Members of the order Rickettsiales are often found in association with ciliated protists. An interesting case is bacterial endosymbiont “ Candidatus Megaira”, which phylogenetically closely related to pathogen Rickettsia . Megaira” was first described as an intracellular bacterium several ciliate species. Since then it has been diverse evolutionary distantly-related hosts, among them other unicellular eukaryotes, and also algae, metazoa, such cnidarians. We provide characterization...
Introduction. Pathogenic strains of Escherichia coli are an important object surveillance within the One Health concept in wild, agriculture and human society. Migratory bird colonies high latitude avian may be points active intraspecies interspecies contact between different animal species, accompanied by spread pathogens. At same time, phylogeography E. relation to presence natural foci colibacillosis polar regions remains virtually unstudied. The aim this study was assess pathogenic...
Enchytraeids, commonly known as potworms, are small oligochaetes found worldwide in various terrestrial, freshwater and marine ecosystems. Despite their crucial role ecosystem functioning, the diversity abundance of Enchytraeidae seldom studied due to labour-intensive process species identification. This study aims address this gap expand knowledge on distribution enchytraeids within Northern Palaearctic Region. The provided dataset represents latest most comprehensive field sampling...
Ciliated protists often form symbioses with many diverse microorganisms. In particular, symbiotic associations between ciliates and green algae, as well intracellular bacteria, are rather wide-spread in nature. this study, we describe the complex system a very rare ciliate, Paramecium chlorelligerum, unicellular algae inhabiting its cytoplasm, novel bacteria colonizing host macronucleus. previously found only twice Germany, was retrieved from location vicinity of St. Petersburg Russia....
The authors establish the fact of distribution oribatid mites by birds earlier unknown from literature. More than 1,222 individuals 150 species different ecological groups were surveyed. 146 live collected in bird feathers. Some mite constantly assume, that they eat not particles skin, but fungi, which on feathers and as all oribates are micophagous.
The terrestrial environment of the High Arctic consists a mosaic habitat types. In addition to natural diversity, various human-influenced types may occur. For resident invertebrate fauna, these anthropogenic habitats be either unusually favourable or detrimental. town Barentsburg, Svalbard, soils were imported for greenhouses from southern Russia. These subsequently discarded outside and have become augmented with manure cowsheds. Both greenhouse cowsheds are now derelict. This site...
Paramecium (Ciliophora) systematics is well studied, and about twenty morphological species have been described. The may include several genetic species. However, molecular phylogenetic analyses revealed that the diversity within could be even higher has raised a problem of cryptic whose statuses remain uncertain. In present study, we provide characterization two novel While lynni n. sp., although morphologically similar to P. multimicronucleatum, phylogenetically separated from all other...
The authors have established that oribatid mites (Acariformes, Oribatei) are transmitted by birds. More than 2,100 birds of 150 species from different ecological groups were surveyed. 180 live collected bird feathers. Some mite in feathers constantly. assume feed not on the particles skin, but fungi inhabiting feathers, as all mycophagous. Oribatid found forms their lifecycle. It has been they reproduce Transmission these microarthropods may be a principle cause distribution, especially...
Summary Holosporales are an alphaproteobacterial lineage encompassing bacteria obligatorily associated with multiple diverse eukaryotes. For most representatives, little is known on the interactions their hosts. In this study, we characterized a novel symbiont of ciliate Paramecium polycaryum . This bacterium inhabits host cytoplasm, frequently forming quite large aggregates. Possibly due to such aggregates, cells sometimes displayed lethal division defects. The was also able experimentally...
It is commonly accepted that green filamentous anoxygenic phototrophic (FAP) bacteria are the most ancient representatives of micro-organisms. Modern FAPs belonging to order Chloroflexales divided into two suborders: Chloroflexineae and Roseiflexineae. Representatives Roseiflexineae lack chlorosomes synthesize bacteriochlorophyll a, whereas those bacteriochlorophylls a c utilize for light harvesting. Though they constitute small number species, quite diverse in their physiology. This...
Abstract A new microsporidian species, Globosporidium paramecii gen. nov., sp. from Paramecium primaurelia is described on the basis of morphology, fine structure, and SSU rRNA gene sequence. This first case microsporidiosis in reported so far. All observed stages life cycle are monokaryotic. The parasites develop cytoplasm, at least some part population endoplasmic reticulum its derivates. Meronts divide by binary fission. Sporogonial plasmodium divides rosette-like budding. Early...