Viktor Komov

Viktor Komov
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Viktor verified their affiliation via an institutional email.
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Viktor verified their affiliation via an institutional email.
  • doctor of Biological scienсеs
  • Professor at Institute of Biology of Inland Waters named Ivan Dmitrievich Papanin

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77
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Papanin Institute for Biology of Inland Waters

Publications

Publications (77)
Article
Full-text available
The European perch (Perca fluviatilis) is a fish species that can be a planktivorous, benthivorous and carnivorous at different life stages. Using the example of the perch population from White Lake (Northwest Russia) the connection between ontogenetic change of diet and mercury accumulation in fish muscle tissue is shown. Analysis of the gut conte...
Article
The study investigates the relationship between the mercury (Hg) content in the muscles of the perch Perca fluviatilis L., 1758 from different areas of the Rybinsk Reservoir including tail-water of the Uglich hydroelectric power plant, which differ in their physico-chemical characteristics, and the length of the fish. The measurement of Hg was carr...
Article
Full-text available
The mercury content in the hair of residents in the industrial city of Cherepovets (0.297 mg/kg) is three times lower than that of residents in the specially protected natural area of Kirillovsky district (0.877 mg/kg), which is approximately 110 km away from Cherepovets. In both the residents of the industrial city and in the protected area, the m...
Article
Full-text available
Mercury is considered to be one of the chemical elements posing the greatest threats to the health of most animals and can be transferred from aquatic ecosystems to terrestrial food webs. Many bat species forage above water, and their food sources include aquatic and amphibious organisms. Bats are very sensitive to the slightest changes in the envi...
Article
Full-text available
The high toxicity of mercury (Hg) poses a danger to the environment and humans, but studies of the concentration of this metal in organisms of terrestrial ecosystems are few. Ecotoxicologists also pay little attention to studying the role of antioxidant vitamins in protecting cells from toxic metals. The Republic of Karelia is one of the northweste...
Article
Full-text available
Total mercury content dynamics were evaluated in the hair of adolescent residents of the industrial center of North West Russia. The content of total mercury varied from less than 0.002 to 0.83 mg/kg. The content of total mercury in the hair of males was 1.5–2 times lower than that of females. The relationship between the body mass index of females...
Article
Full-text available
The study presents the analysis of δ¹³C and δ¹⁵N values in the hair of several Carnivora species (brown bear, Eurasian lynx, wolf, red fox, European pine marten, least weasel, European polecat, stoat, otter) from the Vologda region (North-West of the Russian Federation). The value of δ¹³C varies from -27.9‰ to -20.4‰, δ¹⁵N – from 3.5‰ to 15.3‰. Thi...
Article
The main chemical composition and content of mercury in the muscles of freshwater fish species Xenentodon cancila, Notopterus notopterus, Anabas testudineus, Channa striata, Ch. gachua, Clarias batrachus from the rivers of the Cai South Vietnam, and their body sizes, was studied. A trend of more intensive accumulation of mercury, protein and fat in...
Article
Full-text available
The consumption of fish in food may contain mercury, a harmful element and dangerous chemical detrimental to human health. The purpose of this study was to determine the mercury level in the hair of pregnant women with different fish intakes in their diets. The concentration of total mercury in hair was determined using an atomic absorption spectro...
Article
The main chemical composition and content of mercury in the muscles of freshwater fish species Xenentodon cancila, Notopterus notopterus, Anabas testudineus, Channa striata, Ch. gachua, and Clarias batra chus from the Cái River in Southern Vietnam, as well as their body sizes, have been studied. The trend of the more intensive accumulation of mercu...
Article
The extraction of lipids by the Folch method from the muscles of all the fish studied led to statistically significant differences in the values of δ15N. At the same time, lipid extraction led to a statistically significant increase in δ13C in pike and roach, and to a statistically insignificant decrease in δ13C in perch and bream. Thus, lipid extr...
Article
Full-text available
Introduction: Mercury is considered by the World Health Organization as one of the top ten chemicals of major public health concern. Fish consumption is known to be the main source of exposure to mercury. It has been previously established that freshwater fish of the water bodies of the Vologda Region can be a significant source of mercury exposure...
Preprint
Full-text available
The content of total mercury in the hair of adolescent residents of the industrial center of North-West Russia varied from less than 0.002 to 0.83 mg/kg. The content of total mercury in the hair of males is 1.5-2 times lower than that of females. The relationship between the body mass index of females and the content of total mercury in the hair (f...
Article
Full-text available
Soil invertebrates are the main food resource for birds and small mammals. The migration of mercury into the food webs of terrestrial ecosystems is still poorly investigated. The mercury content in soil, earthworms, wolf spiders and harvesters of the forest park zone of Cherepovets (Vologda region) was determined. The collection of the material was...
Article
Full-text available
Mercury (Hg) and its compounds, which pose a health risk to the population not engaged in hazardous industries, enter the human body mainly with food items. First of all, these are seafood, fish and canned fish. In this study, the concentrations of Hg in the muscles of different fish species from the water bodies of the Yaroslavl province were dete...
Article
Full-text available
In recent decades, researchers from Papanin Institute for Biology of Inland Waters Russian Academy of Sciences have been studying mercury concentrations in the muscles of fish from water bodies situated in different natural and climatic zones. Overall, more than 5000 fish samples from 102 lakes and 35 rivers in Russia were analysed. In the absence...
Article
Full-text available
Mercury is a global pollutant. The main source of mercury in the human body is seafood and freshwater fish. More than 90% of methylmercury from total mercury is found in fish muscles. The main aim of this study was to investigate the mercury levels in the hair of the population of the Vologda Oblast, Northwest Russia, where the heterogeneous distri...
Article
Full-text available
/jats:p> 2022 1244 1244 10.31951/2658-3518-2022-A-3-1244 http://limnolfwbiol.com/index.php/LFWB/article/view/957 Distribution of mercury in the system water-suspended matter-bottom sediments of Lake Onega (NW Russia) V.I. Malov V.S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences, 3 Akad. Koptyu...
Article
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Large industrial enterprises are located on the territory of the city of Cherepovets, which are potential sources of mercury entering the environment. The study involved residents of the Vologda Oblast without cardiovascular diseases (men n=82; women n=266) and with cardiovascular diseases (men n=192; women n=309). The average mercury content in th...
Article
Full-text available
Purpose The purpose of this work is to study mercury levels in the hair of different social and demographic groups of the population of the Vologda region in Northwest Russia. This region is selected due to a heterogeneous distribution of rivers and lakes—a resource base for fishing. Methods The mercury content was determined in the hair from the...
Article
Full-text available
It is known that the consumption of fish is the main source of mercury intake in human beings. In this study, the concentration of mercury in the muscle tissue of fish from different reservoirs of northwestern Russia was found to be 0.01-1.68 μg/g wet weight. The features of mercury accumulation in the muscle tissue of fish, depending on their type...
Article
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Gold mining is currently one of the main anthropogenic sources of mercury in the environment. In this study, the total mercury content was measured in bottom sediments, benthic macroinvertebrates (mayfly larvae), and fish (Siberian dace) along the Boroo River in northern Mongolia. There was a gold recovery plant in the middle reaches of the river u...
Article
The mercury content in the muscle tissue of roach and perch from the reservoirs of the Vologda region of the Russian Federation varies from 0,001 to 1,57 mg/kg of raw mass. Using the recommendations of the FAO/WHO, the safe amount of local fish in the diet of the population of the Vologda region is calculated: for adults — 309–1989 kg/week, dependi...
Article
Full-text available
For the first time in the Russian Federation , a study was conducted to determine the level of mercury in the hair of young and middle-aged women with or without metabolic syndrome (MS) and the Association of mercury content in hair with car-diometabolic risk factors. The studied cohort consisted of 387 women (204 with metabolic syndrome and 183 wi...
Article
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The study represents the data on metal content in the body of stoneflies Perla pallida Guerin-Meneville, 1838 (Plecoptera, Perlidae) and in muscles of the fish family Cyprinidae from the small tributaries of the Belaya River (Republic of Adygea, Northwest Caucasus) with ore mineralization of various metals including mercury. It was found that mercu...
Article
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Аннотация. Данная работа посвящена изучению взаимосвязи между воздействием ртути в ре-зультате потребления рыбы и сердечно-сосудистых заболеваний у жителей Вологодской области. Цель исследования-выявить связь между содержанием ртути в волосах и повышением риска сердечно-сосудистых заболеваний в зависимости от потребления рыбы и связанного с этим ур...
Article
Full-text available
The main aim of this study was to assess the level of mercury accumulation in the hair of students studying in the Vologda Region, Russia. Particular attention is devoted to clarifying the relationship between the metal concentration in the hair and the amount of fish in the diet. It was found that the mercury content in the hair of Vologda Region...
Article
The effects of dietary zinc, copper or mercury (9.8, 9.5 and 0.66 mg/kg wet weight of forage, respectively) on different aspects of fish feeding behavior in common carp were evaluated. The latency to leave the starting chamber after its front wall was raised (t1) and latency to feed (latent time of feeding, t2) as well as the amount of food consume...
Article
Full-text available
The amount of mercury (Hg) in the muscle tissue of the river perch (Perca fluviatilis Linnaeus, 1758) from different stretches of the Rybinsk reservoir was measured in a period from 1997 to 2012. Mercury concentrations were higher in muscles of perches from the Sheksna and Volga reaches, and lower in the Glavnyi and Mologa reaches, as well as Hg in...
Article
Full-text available
The influence of forest fire on the gross mercury content in soddy podburs formed in typical forest­steppe conditions is studied. The metal concentration in the soils of the control area not affected by the fire is 0.063 ± 0.045 mg/kg at a depth of 0–10 cm, compared to 0.041 ± 0.008 mg/kg in soils of the burnt forest area. The relationship between...
Article
Full-text available
We presented scientific findings concerning changes of the clinical and laboratory blood indicators and the presence of mercury in hair of reproductive age women (from 18 to 44 years). With the accumulation mercury level above 0,5 mg/kg in hair, we take a closer look at statistically significant (p ≤ 0,05) increase in uric acid and creatine kinase...
Article
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The total mercury content of the surface layer (0–5 cm) of different types of bottom sediment in Gorky and Cheboksary reservoirs was determined. The content of mercury in bottom sediments varied within a wide range, 0.001–0.234 mg/kg. In spite of large industrial enterprises near the watersheds, which are potential sources of mercury in the environ...
Article
Full-text available
Mercury (Hg) and its compounds are considered as one of the ten major dangerous groups of chemicals. The content of mercury in the coat was 136 cats and 113 dogs in the territory of the Vologda Region in Cherepovets. The total mercury concentration in the wool samples was measured on a mercury analyzer RA-915 +. The values of the mercury index in c...
Article
Full-text available
The long-term dynamics of mercury in bottom sediments of Uglich Reservoir were examined. Samples of the 0–5-cm surface layer of bottom sediment collected during research expeditions in 1958, 1977, 1991, and 2012 were analyzed. An increase in the average mercury concentration from 1958 to 1977 (0.440 ± 0.039 and 0.668 ± 0.065 mg/kg d.w., respectivel...
Article
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This study is aimed at analyzing the total mercury in the tissues of mammals adapted to a semiaquatic or subterranean lifestyle and at analyzing the possible role of their antioxidant system in heavy metal detoxication. The water shrew Neomis fodiens Pennant, 1771, European mole Talpa europaea Linnaeus, 1758, muskrat Ondatra zibethicus Linnaeus, 17...
Article
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The characteristic properties of uptake and distribution of mercury in terrestrial ecosystems have received much lesser attention compared to aquatic particularly in Russia. Terrestrial ecosystems adjacent to large industrial manufactures—potential sources of mercury inflow into the environment frequently remain unstudied. This is the first report...
Article
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Trophic and spatial components of ecological niches of two canids native Vulpes vulpes and introduced Nyctereutes procyonoides are overlapping partially in the studied region. Maximum concentrations of mercury in predatory mammals of Canidae family from surroundings of Cherepovets have been determined in liver and kidneys (over 0.50 mg/kg wet weigh...
Article
The levels of metal content and toxicity have been determined in bottom sediments of water bodies in Central and South Vietnam. It is found that the concentration of metals (As, Cr, Cu, Hg, Ni, Pb, and Zn) exceed the value of the abundance of elements in the Earth’s crust, which may be associated with geochemical features of the province. Acute tox...
Article
The content of mercury has been determined in the muscle tissue of 18 fish species in rivers, lakes and reservoirs of Central and South Vietnam. The region is characterized by lower metal concentrations than those in water bodies in temperate and northern latitudes. In 76% of samples (n = 986), the content of Hg was ≤0.5 μg Hg/g of dry (≤0.1 μg/g o...
Article
Full-text available
The biodiversity of the Selenga river basin and the receiving waters of the lake Baikal, are among the greatest in the world with over 1,700 known endemic species of plants and animals. Mining activities along the Selenga river and its tributaries pose a major threat of chemical contamination, potentially reducing habitat quality and suitability fo...
Article
The complex lithological–geochemical investigation of the river–sea system included the analysis of the distribution of 56 elements in bottom sediments sampled along the following profile: the Kai River channel, its delta, and the shelf of the South China Sea (Vietnam). It was revealed that the sediments are gen erally enriched with sulfur, alkali...
Article
Differences between the muscle mercury contents in fish from lakes Gusinoye and Karasinoye and the Selenga River may indicate an inconsiderable income of mercury in aquatic ecosystems with atmospheric precipitation, along with a more intensive migration of mercury with the riverine flux. The minimal concentration of mercury (less than 0.15 mg/kg, d...
Article
Full-text available
Streambed sediment and subsurface floodplain soil were sampled for elemental analyses from 15 locations in river basins of north-central Mongolia during August 2010. Our primary objective was to conduct a reconnaissance-level assessment of potential inputs of toxicologically important metals and metalloids to Lake Baikal, Russia, that might origina...
Article
The concentration of mercury in muscles of experimental carp Cyprinus carpio whose diet contained high levels of mercury gradually increased and in 6 months became 5.4 times higher than in the control group. This increase was accompanied by a decrease in the activity of glycosidases in the intestinal mucosa, as a rule, and an increase in the activi...
Article
Full-text available
The intestinal glycosidase activities and kinetic characteristics of carbohydrate hydrolysis change in different ways with mercury accumulation in the muscles of perch from aquatic bodies of European Russia. Amylolytic activity decreases in fish from aquatic bodies with a neutral pH with a growth in Hg content (0.05–0.30 mg per 1 kg fresh weight),...
Article
Total mercury concentration in water, seston, soils, and muscle tissues of fish in water bodies in Khan Hoa province was determined. Hg concentration in water does not exceed 40 ng/l. It migrates in water mostly in dissolved form. Hg concentration in soils of the examined water bodies varies from 0.01 to 0.05 mg/(kg dry mass) and that in the muscle...
Article
Data on the effect of nano- and microparticles of cerium and titanium dioxides and zinc oxide on the survival rate and reproduction of nanoflagellates and ceriodaphnia are given. The inhibitory effect of metal oxide nanoparticles on nanoflagellates Bodo saltans Ehrenberg manifested itself in a decrease in their population after 3–4 days of exposure...
Article
Full-text available
Fluorescent in situ hybridization (FISH) with rRNA-specific oligonucleotide probes was used to assess the numbers and phylogenetic diversity of prokaryotic microorganisms in the water of small boreal lakes and peatland catchments of the swampy upper Volga basin. The abundance of bacterioplankton in lake water was found to vary from 1.6 to 8.7 × 106...
Article
Full-text available
It has been shown that chronic exposure to dietary mercury results in the intensive accumulation of this metal in roach yearlings. The concentrations of accumulated mercury in their organisms were proportional to the amount of metal added to water of experimental tanks. Increased Hg content in the organisms (0.05–0.16 mg/kg) of developing juvenile...
Article
Changes in the levels of mercury in the fish inhabiting the water reservoirs of Russia were studied after cooking it in a variety of ways (boiling for different time periods, roasting, and smoking). To have a general idea of the impact of various procedures for cooking the fish on its mercury amount, the authors measured mercury concentrations in s...
Article
Full-text available
Investigation of hydrolysis of carbohydrates in the intestine of the river perch Perca fluviatilis with varying mercury content in muscles revealed considerable changes in the total amylolytic activity, saccharase activity, and kinetic characteristics of hydrolysis of di- and polysaccharides. In the experimental juveniles of perch and in the adult...
Article
The effect of methyl mercury compounds of natural origin was investigated on two key reactions of planarian feeding behavior: the approach to the prey and pharyngeal protrusion. Two types of food, with low and high mercury concentrations, were used to judge the approach reaction in view of differences in food preference. The number of oligochaetes...
Article
We studied the effects of methyl mercury compounds of natural origin on regeneration of the planarians Dugesia tigrina and Polycelis tenuis. Accumulation of methyl mercury in the planarian body leads to a delayed formation of photoreceptor organs in planarians of both species. After a significant traumatic load, the regeneration is suppressed and t...
Article
It was established that development of the heterotrophic part of planktonic assemblages and a decrease in a relative part of biomass of primary producers and macrozoobenthos lead to increased accumulation of mercury in fish as the final link in the trophic chain.
Article
The comparative analysis of the perch Perca fluviatilis liver has been performed by the methods of light and electron microscopy. Unlike the fish from a neutral-acidity lake and from the Rybinskoe Reservoir, in the liver of the perches from acidic lakes, some differences at the cellular level were revealed. They consisted in an increased secretion,...
Article
Full-text available
Formation of the chemical composition of lake waters is investigated by way of calculating the annual budget of basic ions (Ca 2+, Mg 2+, HCO 3-, and SO 42-), based on data collected on a complex boggy watershed of Lake Khotavets, which includes raised and transitory bogs, meadows, and the watersheds of two neighboring lakes. The contribution of di...
Article
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A diversity of lakes is found throughout Darwin Reserve in northwest Russia that ranges from acid-clear and acid-brown lakes (pH <5.0) to extremely dark-water lakes (>400 Hazen units) with more neutral pH. The variation among lakes reflects watershed character and watershed interaction with atmospheric deposition. Acid lakes had the highest concent...
Article
Distribution of mercury in organs and tissues was studied in fish from lakes of various types located in the Cherepovetskii and Babaevskii raions of Vologodskaya oblast. The dependence of the level of mercury accumulation on size and weight of fish and environmental factors (pH, sulfate content, total phosphorus, trophic index E of a water body, th...
Article
The regularities of mercury distribution in abiotic (water and sediments) and biotic (zooplankton, zoobenthos, fish, birds, and mammals) components of neutral and acid closed lakes of different types on the territory of the Darwin National Reserve are studied. The data obtained on mercury accumulation in links of the food chain in acid lakes sugges...
Article
We determined mercury in fish (perch Perca fluviatilis) from 26 Russian lakes in three regions over four years. The lakes ranged in size from 2 to 395,000 ha, in pH from 4.5 to 10.0, and in color from 3 to 190 hazen. Sixteen lakes were drainage lakes, with permanent outlets, and 10 were seepage lakes, with no permanent inlets or outlets. The lakes...
Article
The 137Cs content was measured in the muscle tissue of different fish species from several lakes and rivers in the western Bryansk region (a zone of heavy radioactive pollution after the Chernobyl accident) and in lightly contaminated territories: the Vologda region and Karelia.The highest levels of 137Cs (up to 15 000–21 000 Bq/kg wet weight) were...
Article
Trace metals such as aluminum, when mobilized by acid deposition, may be important toxic agents in acidified waters. Beryllium is chemically similar to aluminum, and its solubility and aqueous speciation properties suggest that it may also be a problem in some acidic waters. Elevated beryllium levels have been found in some waters, but little is kn...
Article
Darwin National Reserve is a protected natural area on the north-west shore of the Rybinsk Reservoir, 350 km north of Moscow. In June 1989, six lakes in the Reserve and the reservoir were surveyed to assess lake acidity and the mercury content of perch, Perca fluviatilis. Five were seepage lakes with no permanent inlets or outlets and one was a dra...
Article
Full-text available
Summary Freshwater pearl mussels Margaritifera margaritifera L. were exposed to air for 7 days, then immersed in circumneutral water (pH7-85) or acidified water (pH5-25) for 5 days. Mantle fluid pH and composition were monitored through- out. The mussels were observed to gape periodically when in air. Periodic gaping permitted aerial gas exchange s...

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