ИВ

И. В. Ханаев

Siberian Branch of the Russian Academy of Sciences

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I. A. Nebesnykh

Siberian Branch of the Russian Academy of Sciences

ЛС

Л. С. Кравцова

Limnological Institute

ОО

О. О. Maikova

Russian Academy of Sciences

СИ

С. И. Беликов

Limnological Institute

E. V. Dzyuba

Siberian Branch of the Russian Academy of Sciences

НН

Н. Н. Деникина

Limnological Institute

T. Ya. Sitnikova

Limnological Institute

Tatyana V. Butina

Limnological Institute

Yurij Bukin

Siberian Branch of the Russian Academy of Sciences

Lubov Chernogor

Siberian Branch of the Russian Academy of Sciences

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Siberian Branch of the Russian Academy of Sciences

149

Limnological Institute

144

Russian Academy of Sciences

127

Irkutsk State University

Irkutsk Research Institute of the Forestry Industry

Baikal Nature Reserve

Baikal Institute of Nature Management

Lomonosov Moscow State University

Institute of Petroleum Geology and Geophysics

Joint Institute for Nuclear Research

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Raw data for the article "Universal microsatellite markers made it possible to study the genetic diversity of Baikal endemic sponges at the interspecies level."

Figshare (2023)

Alena Yakhnenko Yurij Bukin И. В. Ханаев В. Б. Ицкович

Here are files with raw data for phylogenetic analysis and calculation of microsatellite loci diversity parameters for Baikal sponges.

10.6084/m9.figshare.24116016

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Citations (0)

Isolation and identification of the microalgal symbiont from primmorphs of the endemic freshwater spongeLubomirskia baicalensis(Lubomirskiidae, Porifera)

European Journal of Phycology (2013)

Lubov Chernogor Н. Н. Деникина И. Г. Кондратов Innokentiy Solovarov И. В. Ханаев

The first reports on the presence of zoochlorellae within the organelles of mesenchymal cells from freshwater sponges were published in the 19th century. Today, it is well-known that freshwater sponges can be found in association with different endosymbiotic algae. However, until now there has been no detailed information about the endosymbiotic chlorophyll-containing algae in the remarkable endemic green sponges from Lake Baikal. In our study we were able for the first time to isolate and identify endosymbionts from primmorphs cultivated in vitro, and to compare them with those from naturally occurring Lubomirskia baicalensis sponges. Structural as well as molecular biological investigations show that the endosymbiotic alga is a Mychonastes species closely related to M. huancayensis. Another novel aspect of our work was to show that it is possible to use primmorphs of endemic sponges for isolation and subsequent cultivation of their endosymbiotic algae. We employed a simple cold-water (3–4°C) approach for cultivating Mychonastes sp., both within sponge primmorphs and in culture.

Sponge

Green algae

Isolation

10.1080/09670262.2013.862306

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Citations (28)

First detection of benthic cyanobacteria in Lake Baikal producing paralytic shellfish toxins

Toxicon (2016)

О. И. Белых И. В. Тихонова Anton V. Kuzmin Е. Г. Сороковикова Г. А. Федорова

Saxitoxin

Paralytic shellfish poisoning

Marine toxin

Shellfish Poisoning

10.1016/j.toxicon.2016.08.015

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Citations (42)

Detection and Genetic Characterization of Bacteria of the Genus Pseudomonas from Microbial Communities of Lake Baikal

Russian Journal of Genetics (2018)

N. L. Belkova E. V. Dzyuba E. S. Klimenko И. В. Ханаев Н. Н. Деникина

Microbial genetics

10.1134/s1022795418040038

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Citations (4)

Response of Aquatic Organisms Communities to Global Climate Changes and Anthropogenic Impact: Evidence from Listvennichny Bay of Lake Baikal

Biology (2021)

Л. С. Кравцова S. S. Vorobyeva Elena Yu. Naumova Л. А. Ижболдина E. V. Mincheva

Recent studies have revealed how the freshwater biota of Lake Baikal responds to climate change and anthropogenic impacts. We studied phyto- and zooplankton, as well as phyto- and zoobenthos, in the open coastal waters of the southern basin of the lake and of Listvennichny Bay. A total of 180 aquatic organism taxa were recorded. The response of the Baikal ecosystem to climate change can be traced by changes in the species composition of planktonic communities of the lake’s open coasts in summer. The key species were thermophilic the Anabaena lemmermannii P. Richt. (Fij = +0.7) blue-green algae, the Asplanchna priodonta Gosse (Fij = +0.6) rotifers in 2016, the Rhodomonas pusilla (Bachm.) Javorn. (Fij = +0.5) cold-loving algae, and the Cyclops kolensis Lilljeborg (Fij = +0.9) copepods in the past century. The proportion of Chlorophyta decreased from 63% to 17%; the Cyanophyta increased from 3% to 11% in the total biomass of phytoplankton; and the proportion of Cladocera and Rotifera increased to 26% and 11% in the biomass of zooplankton, respectively. Human activity makes an additional contribution to the eutrophication of coastal waters. The Dinobryon species, the cosmopolitan Asterionella formosa Hass. and Fragilaria radians Kütz., dominated phytoplankton, and filamentous algae, Spirogyra, dominated at the bottom in the area with anthropogenic impact. The trophic level was higher than at the unaffected background site: the saprobity index varied from 1.45 to 2.17; the ratio of eutrophic species to oligotrophic species ranged from 1:2 to 3:1, and the ratio of mesosaprobiont biomass to endemics biomass ranged from 2:1 to 7:1. Currently, the boundaries of eutrophication zones of shallow waters in Lake Baikal are expanding, and its coastal zone has acquired features typical of freshwater bodies of the eutrophic type.

Biota

10.3390/biology10090904

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Citations (13)

Comparative analysis of free-living and particle-associated bacterial communities of Lake Baikal during the ice-covered period

Journal of Great Lakes Research (2020)

Maria Bashenkhaeva Yuri Galachyants И. В. Ханаев M. V. Sakirko Darya P. Petrova

Verrucomicrobia

10.1016/j.jglr.2020.03.015

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Citations (21)

Promising ichthyologic studies in Lake Baikal: fundamental and applied aspects

Limnology and Freshwater Biology (2018)

E. V. Dzyuba B. E. Bogdanov Yulia P. Sapozhnikova P.N. Anoshko И. В. Ханаев

There are almost three hundred years of ichthyologic studies in Lake Baikal and in its catchment area.During this time, they moved away from brief faunal reviews and taxonomic descriptions towards integrated and interdisciplinary studies oriented to fish biodiversity, systematics, phylogeny, evolution, ecology, morphology and physiology.Results of these studies are published in many papers.They constitute a basis of the current knowledge about fish of Lake Baikal, and they will be still in demand in the future.The importance of the ichthyologic research in Lake Baikal is due to necessity to resolve several problems in the following areas: fish abundance dynamics, reproduction of fish stock, creation of a biological basis for fisheries and study of fish ailments.Hence, a very promising is to develop methods of a complex monitoring of fish in Lake Baikal.Baikal omul Coregonus migratorius (Georgi, 1775) is the main commercial species of Lake Baikal, thus the census of its population size and biomass is a goal of the rational nature resource management.The urgency of

Diversity of fish

10.31951/2658-3518-2018-a-1-28

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Citations (2)

Role of Cultured Microorganisms from Biofilms Formed on Rocky Substrates in the Lake Baikal Self-Purification System

Microbiology (2018)

M. Yu. Suslova O. S. Pestunova E. V. Sukhanova Yu. R. Shtykova T. Ya. Kostornova

10.1134/s0026261718060176

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Citations (5)

Microbiome analysis of healthy and diseased sponges Lubomirskia baicalensis by using cell cultures of primmorphs

Lubov Chernogor Elizabet Klimenko И. В. Ханаев С. И. Беликов

Background. Freshwater sponges (Demosponges, Lubomirskiidae) are dominated in the littoral zone Lake Baikal in the biomass of benthic organisms and represent complex consortia of many species of eukaryotes and prokaryotes. A distinctive feature of sponges from Lake Baikal is their ability to live in symbiosis with various kinds of chlorophyll containing microalgae. Recently there have been massive diseases and the death of freshwater sponges. The etiology and ecology of these events remain unknown. Purpose. The purpose of the research was to use cell culture of primmorphs in vitro to study the microbiomes of healthy and diseased sponges to show the transmission of pathogenic agents from diseased sponges to cell cultures. Methods. The cell culture of primmorphs sponge Lubomirskia baicalensis was used to study microbiome communities in diseased and sick sponges in comparison with healthy sponge with subsequent sequencing of gene 16S rRNA and analysis of changes in microbiomes. Results. Results this study were show that use of cell culture of primmorphs in vitro is equivale of healthy sponge. Microbial community of healthy sponge and primmorphs was grouped separately from the community of diseased sponges and infected primmorphs, which confirms the suitability the cell culture of primmorphs, as a model sponge system. We found the mass death of green symbionts (Chlorophyta) and a shift in the microbial communities of sponges/primmorphs, associated with increase in relative abundant of different phyla Bacteroidetes and Proteobacteria with dominated families Flavobacteriaceae and Burkholderiaceae , Moraxellaceae in diseased sponges and infected cell cultures of primmorphs. Conclusions. This approach allowed us, using the cell culture of primmorphs, to identify potential opportunistic bacteria that can work together, which possibly enhances their action. The primmorphs system described here is a powerful new model system for studying basic mechanisms of the development of sponge disease, which will be valuable in future studies.

Sponge

Planctomycetes

10.7287/peerj.preprints.27851v1

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Citations (1)

Evidence of lowstand of Lake Baikal during the Last Glaciation

Doklady Earth Sciences (2008)

Oleg Khlystov И. В. Ханаев M.A. Grachev

10.1134/s1028334x08070301

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Citations (16)