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Efficiency of transfer of essential polyunsaturated fatty acids versus organic carbon from producers to consumers in a eutrophic reservoir / M. I. Gladyshev [et al.] // Oecologia. - 2011. - Vol. 165, Is. 2. - P521-531, DOI 10.1007/s00442-010-1843-6 . - ISSN 0029-8549
Кл.слова (ненормированные):
Phytoplankton -- Production -- PUFA -- Trophic level -- Zooplankton -- carbon -- fresh water -- unsaturated fatty acid -- biomass -- eutrophic environment -- fatty acid -- net primary production -- organic carbon -- paradigm shift -- phytoplankton -- reservoir -- secondary production -- trophic level -- zooplankton -- animal -- article -- eutrophication -- food chain -- functional food -- growth, development and aging -- metabolism -- phytoplankton -- season -- zooplankton -- Animals -- Carbon -- Eutrophication -- Fatty Acids, Unsaturated -- Food Chain -- Fresh Water -- Functional Food -- Phytoplankton -- Seasons -- Zooplankton -- Animalia
Аннотация: One of the central paradigms of ecology is that only about 10% of organic carbon production of one trophic level is incorporated into new biomass of organisms of the next trophic level. Many of energy-yielding compounds of carbon are designated as 'essential', because they cannot be synthesized de novo by consumers and must be obtained with food, while they play important structural and regulatory functions. The question arises: are the essential compounds transferred through trophic chains with the same efficiency as bulk carbon? To answer this question, we measured gross primary production of phytoplankton and secondary production of zooplankton and content of organic carbon and essential polyunsaturated fatty acids of ?-3 family with 18-22 carbon atoms (PUFA) in the biomass of phytoplankton and zooplankton in a small eutrophic reservoir during two summers. Transfer efficiency between the two trophic levels, phytoplankton (producers) and zooplankton (consumers), was calculated as ratio of the primary production versus the secondary (zooplankton) production for both carbon and PUFA. We found that the essential PUFA were transferred from the producers to the primary consumers with about twice higher efficiency than bulk carbon. In contrast, polyunsaturated fatty acids with 16 carbon atoms, which are synthesized exclusively by phytoplankton, but are not essential for animals, had significantly lower transfer efficiency than both bulk carbon, and essential PUFA. Thus, the trophic pyramid concept, which implicitly implies that all the energy-yielding compounds of carbon are transferred from one trophic level to the next with the same efficiency of about on average 10%, should be specified for different carbon compounds. В© 2010 Springer-Verlag.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Anishchenko, O.V.; Makhutova, O.N.; Kolmakov, V.I.; Kalachova, G.S.; Kolmakova, A.A.; Dubovskaya, O.P.

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Biological life support systems for a Mars mission planetary base: Problems and prospects / A. A. Tikhomirov [et al.] // Advances in Space Research. - 2007. - Vol. 40, Is. 11. - P1741-1745, DOI 10.1016/j.asr.2006.11.009 . - ISSN 0273-1177
Кл.слова (ненормированные):
BLSS -- Matter turnover -- Wastes utilization -- Biological systems -- Biophysics -- Martian surface analysis -- Physical chemistry -- Problem solving -- Biological life support systems -- Mars mission planetary base -- Matter turnover -- Wastes utilization -- Life support systems (spacecraft)
Аннотация: The study develops approaches to designing biological life support systems for the Mars mission - for the flight conditions and for a planetary base - using experience of the Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences (IBP SB RAS) with the Bios-3 system and ESA's experience with the MELISSA program. Variants of a BLSS based on using Chlorella and/or Spirulina and higher plants for the flight period of the Mars mission are analyzed. It is proposed constructing a BLSS with a closed-loop material cycle for gas and water and for part of human waste. A higher-plant-based BLSS with the mass exchange loop closed to various degrees is proposed for a Mars planetary base. Various versions of BLSS configuration and degree of closure of mass exchange are considered, depending on the duration of the Mars mission, the diet of the crew, and some other conditions. Special consideration is given to problems of reliability and sustainability of material cycling in BLSS, which are related to production of additional oxygen inside the system. Technologies of constructing BLSS of various configurations are proposed and substantiated. Reasons are given for using physicochemical methods in BLSS as secondary tools both during the flight and the stay on Mars. В© 2007.

Scopus
Держатели документа:
Institute of Biophysics (Siberian Branch of Russian Academy of Science) Akademgorodok, Krasnoyarsk, 660036, Russian Federation
ESA/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, Netherlands : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tikhomirov, A.A.; Ushakova, S.A.; Kovaleva, N.P.; Lamaze, B.; Lobo, M.; Lasseur, Ch.

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Saline rivers provide arid landscapes with a considerable amount of biochemically valuable production of chironomid (Diptera) larvae / T. D. Zinchenko [et al.] // Hydrobiologia. - 2014. - Vol. 722, Is. 1. - P115-128, DOI 10.1007/s10750-013-1684-5 . - ISSN 0018-8158
Кл.слова (ненормированные):
Chironomid larvae -- Essential fatty acids -- Saline rivers -- Secondary production
Аннотация: Saline rivers are supposed to be 'hot spots' of high biological productivity in arid landscapes. To test this, we quantified the production of chironomid larvae, because river production is known to be transferred to arid landscapes primarily by birds fed on these larvae. In addition, we studied the potential biochemical quality of the larvae for birds based on the essential highly unsaturated fatty acid (HUFA) contents in their biomass. We studied species composition and measured production of chironomid larvae in two saline rivers (Volgograd region, Russia). We also evaluated the fatty acid composition and contents of the dominant taxa and estimated the flux of HUFA from the studied saline rivers to land via chironomid potential emergence. Average monthly production of chironomids measured for only 1 month, August, was quite comparable to annual production in some freshwater rivers. All the dominant chironomid larvae had comparatively high essential eicosapentaenoic acid contents, especially Cricotopus salinophilus, which showed the highest value, reported for Chironomidae. The monthly flux of HUFA from the studied rivers to land due to the chironomid potential emergence was roughly comparable to the global average estimation of annual water-land HUFA export via emerging insects. В© 2013 Springer Science+Business Media Dordrecht.

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Держатели документа:
Institute of Ecology of the Volga River Basin, Russian Academy of Sciences, st. Komzina 10, Togliatti, 445003, Russian Federation
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zinchenko, T.D.; Gladyshev, M.I.; Makhutova, O.N.; Sushchik, N.N.; Kalachova, G.S.; Golovatyuk, L.V.

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Bioluminescence in education: Contemporary bioluminescent practical training session for research activities in secondary schools [Text] / N. . Rimatskaia [et al.] // Luminescence. - 2014. - Vol. 29. - P75-76. - Cited References: 0 . - ISSN 1522-7235. - ISSN 1522-7243

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Держатели документа:
[Rimatskaia, Nadezhda
Sutormin, Oleg
Sukovataya, Irina
Kratasyuk, Valentina] Siberian Fed Univ, Krasnoyarsk, Russia
[Kratasyuk, Valentina] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rimatskaia, N...; Sutormin, O...; Sukovataya, I...; Kratasyuk, V...

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Comparison of chronic low-dose effects of alpha- and beta-emitting radionuclides on marine bacteria / M. A. Selivanova [et al.] // Cent. Eur. J. Biol. - 2014. - Vol. 9, Is. 10. - P951-959, DOI 10.2478/s11535-014-0331-0 . - ISSN 1644-3632
Кл.слова (ненормированные):
Am-241 -- Hormesis -- Luminous bacteria -- Peroxides -- Radiotoxicity -- Tritium
Аннотация: Effects of Americium-241 (241Am), alpha-emitting radionuclide of high specific radioactivity, and tritium (3H), beta-emitting radionuclide, on luminous bacteria Photobacterium phosphoreum were compared. Bioluminescence intensity served as a marker of bacterial physiological activity. Three successive stages in the bioluminescence response to 241Am and 3H were found under conditions of lowdose irradiation: (1) absence of effects, (2) activation, and (3) inhibition. They were interpreted in terms of bacterial response to stressfactor as stress recognition, adaptive response/syndrome, and suppression of physiological function (i.e. radiation toxicity). Times of bioluminescence activation (TBA) and inhibition (TBI) were suggested as parameters to characterize hormesis and toxic stages in a course of chronic low-dose irradiation of the microorganisms. Values of TBA and TBI of 241Am were shorter than those of 3H, revealing higher impact of alpha-irradiation (as compared to beta-irradiation) under comparable radiation doses. Increases of peroxide concentration and NADH oxidation rates in 241Am aquatic solutions were demonstrated; these were not found in tritiated water. The results reveal a biological role of reactive oxygen species generated in water solutions as secondary products of the radioactive decay. The study provides a scientific basis for elaboration of bioluminescence-based assay to monitor radiotoxicity of alpha- and beta-emitting radionuclides in aquatic solutions. © 2014 Versita Warsaw and Springer-Verlag Wien.

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Держатели документа:
Institute of Biophysics SB RAS, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 660041 Krasnoyarsk, Russian Federation
Siberian State Technological University, Lesosibirsk, Krasnoyarsk region, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Selivanova, M.A.; Rozhko, T.V.; Devyatlovskaya, A.N.; Kudryasheva, N.S.

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Effect of low-dose ionizing radiation on luminous marine bacteria: radiation hormesis and toxicity [Text] / N. S. Kudryasheva, T. V. Rozhko // J. Environ. Radioact. - 2015. - Vol. 142. - P68-77, DOI 10.1016/j.jenvrad.2015.01.012. - Cited References:131. - This work was supported by the Russian Foundation for Basic Research, Grant No.13-04-01305a, the Program "Molecular and Cellular Biology" of the Russian Academy of Sciences, project VI 57.1.1. The part of the work (review of effects of americium-241) was supported by the Russian Science Foundation, Grant No. 14-14-00076. . - ISSN 0265-931X. - ISSN 1879-1700

РУБ Environmental Sciences
Рубрики:
RECOMBINANT LUMINESCENT MICROORGANISMS
PHOTOBACTERIUM-LEIOGNATHI
Кл.слова (ненормированные):
Marine bacteria -- Low-dose effects -- Radiation hormesis -- Radiotoxicity -- Reactive oxygen species
Аннотация: The paper summarizes studies of effects of alpha- and beta-emitting radionuclides (americium-241, uranium-235+238, and tritium) on marine microorganisms under conditions of chronic low-dose irradiation in aqueous media. Luminous marine bacteria were chosen as an example of these microorganisms; bioluminescent intensity was used as a tested physiological parameter. Non-linear dose-effect dependence was demonstrated. Three successive stages in the bioluminescent response to americium-241 and tritium were found: 1 - absence of effects (stress recognition), 2 - activation (adaptive response), and 3 - inhibition (suppression of physiological function, i.e. radiation toxicity). The effects were attributed to radiation hormesis phenomenon. Biological role of reactive oxygen species, secondary products of the radioactive decay, is discussed. The study suggests an approach to evaluation of non-toxic and toxic stages under conditions of chronic radioactive exposure. (C) 2015 Elsevier Ltd. All rights reserved.

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Держатели документа:
Inst Biophys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Krasnoyarsk State Med Acad, Krasnoyarsk 660022, Russia

Доп.точки доступа:
Kudryasheva, N. S.; Rozhko, T. V.; Russian Foundation for Basic Research [13-04-01305a]; Program "Molecular and Cellular Biology" of the Russian Academy of Sciences [VI 57.1.1]; Russian Science Foundation [14-14-00076]

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The Chemical Basis of Fungal Bioluminescence / K. V. Purtov [et al.] // Angew. Chem. Int. Ed. - 2015. - Vol. 54, Is. 28. - P8124-8128, DOI 10.1002/anie.201501779 . - ISSN 1433-7851
Кл.слова (ненормированные):
bioluminescence -- bioorganic chemistry -- biosynthesis -- luciferin -- natural products -- Biochemistry -- Bioluminescence -- Biosynthesis -- Metabolites -- Phosphorescence -- Biochemical mechanisms -- Bioorganic chemistry -- luciferin -- Natural products -- Plant secondary metabolites -- Structural similarity -- Fungi
Аннотация: Many species of fungi naturally produce light, a phenomenon known as bioluminescence, however, the fungal substrates used in the chemical reactions that produce light have not been reported. We identified the fungal compound luciferin 3-hydroxyhispidin, which is biosynthesized by oxidation of the precursor hispidin, a known fungal and plant secondary metabolite. The fungal luciferin does not share structural similarity with the other eight known luciferins. Furthermore, it was shown that 3-hydroxyhispidin leads to bioluminescence in extracts from four diverse genera of luminous fungi, thus suggesting a common biochemical mechanism for fungal bioluminescence. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Держатели документа:
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow, Russian Federation
Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
Pirogov Russian National Research Medical University, Ostrovitianov 1, Moscow, Russian Federation

Доп.точки доступа:
Purtov, K.V.; Petushkov, V.N.; Baranov, M.S.; Mineev, K.S.; Rodionova, N.S.; Kaskova, Z.M.; Tsarkova, A.S.; Petunin, A.I.; Bondar, V.S.; Rodicheva, E.K.; Medvedeva, S.E.; Oba, Y.; Arseniev, A.S.; Lukyanov, S.; Gitelson, J.I.; Yampolsky, I.V.

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Secondary Production of Highly Unsaturated Fatty Acids by Zoobenthos Across Rivers Contrasting in Temperature [Text] / M. I. Gladyshev [et al.] // River Res. Appl. - 2016. - Vol. 32, Is. 6. - P1252-1263, DOI 10.1002/rra.2945. - Cited References:55. - The work was supported by the project no. 6.1089.214/K of Siberian Federal University carried out according to Federal Tasks of Ministry of Education and Science of Russian Federation and by Russian Federal Tasks of Fundamental Research (project no. 51.1.1). . - ISSN 1535-1459. - ISSN 1535-1467

РУБ Environmental Sciences + Water Resources
Рубрики:
AQUATIC ECOSYSTEMS
   CLIMATE-CHANGE
   YENISEI RIVER
   ALPINE PONDS
   LAKE
Кл.слова (ненормированные):
essential polyunsaturated fatty acids -- river zoobenthos -- secondary -- production -- biodiversity -- water temperature -- climate warming
Аннотация: Highly unsaturated fatty acids (HUFA), namely eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), which are essential for many animals, including humans, are mainly produced in aquatic trophic webs. In fast-flowing rivers, macrozoobenthos is the main source of HUFA for fish and may be particularly vulnerable to thermal alterations associated with climate change. We studied benthic communities in a unique natural ecosystem: the Yenisei River downstream of the dam of Krasnoyarsk Hydroelectric Power Station with very low temperature in summer because of discharge of cold water from deep in the reservoir and its tributaries with high summer temperature. This natural experiment' allowed to get rid of confounding factors, such as differences in light, seasonality, geology (biogeochemistry) and biogeography (regional species pools). As found, in spite of an increase of biodiversity and rates of daily production in warm rivers compared with cold sites, DHA and partly EPA production of zoobenthos decreased with the increase of temperature because of changes in species composition. Thus, in a climate warming context, we can predict a decrease of production of these HUFA by river zoobenthos and thereby a diminishing of their supply for fish and next to humans. Copyright (c) 2015 John Wiley & Sons, Ltd.

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Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Gladyshev, M. I.; Sushchik, N. N.; Shulepina, S. P.; Ageev, A. V.; Dubovskaya, O. P.; Kolmakova, A. A.; Kalachova, G. S.; Siberian Federal University [6.1089.214/K]; Russian Federal Tasks of Fundamental Research [51.1.1]

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Fluxes of biomass and essential polyunsaturated fatty acids from water to land via chironomid emergence from a mountain lake / E. V. Borisova [et al.] // Contemp. Probl. Ecol. - 2016. - Vol. 9, Is. 4. - P446-457, DOI 10.1134/S199542551604003X . - ISSN 1995-4255
Кл.слова (ненормированные):
amphibiotic insect emergence -- biogenic fluxes from water to land -- Chironomidae -- mountain landscape -- polyunsaturated fatty acids -- Chironomidae -- Hexapoda
Аннотация: The taxonomic composition, seasonal dynamics, and emergence intensity of chironomid adults (the Chironomidae family) emerging from Oiskoe mountain oligotrophic lake (Western Sayan, Southern Siberia) have been established. The value of the annual emergence of chironomid adults averages 0.42 g wet weight m-2 in the lake area and approaches the value of potential emergence, which is calculated based on the estimate of zoobenthos secondary production. For the first time the fatty-acid composition and contents of essential omega-3 polyunsaturated fatty acids (PUFAs) are compared between the larvae and adult stages of chironomids. The PUFA content per wet weight unit in adults is more than 7 times higher than that in larvae. The PUFA flux per lake area unit resulting from the chironomid emergence amounted to 1.752 mg m-2 y-1, which is over 10 times lower than the global estimate for the emergence of amphibiotic insects. Calculations show that the PUFA flux brought with the chironomid emergence per land unit of the studied mountain territory is very low when compared to that for other landscapes, with the exception of the shoreline part of the territory with a width of 15 m, in which the PUFA flux is comparable to that in productive landscapes. © 2016, Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, pr. Svobodny 79, Krasnoyarsk, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Borisova, E. V.; Makhutova, O. N.; Gladyshev, M. I.; Sushchik, N. N.

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10.

Electrospinning of degradable phas: Process, properties, applications / T. G. Volova [et al.] // : Nova Science Publishers, Inc., 2017. - P1-56
Кл.слова (ненормированные):
Biological and physical/mechanical properties -- Cell proliferation -- Electrospinning -- Nonwoven membranes -- Pha -- Scaffolds -- Skin regeneration -- Ultrafine fibers -- Wound dressings
Аннотация: An integrated study has been performed to investigate the process of formation of ultrafine fibers and nonwoven membranes by electrospinning from natural degradable polymers-polyhydroxyalkanoates (PHAs); physical, mechanical, and biological properties of the products have been studied. Then, electrospinning was used to prepare ultrafine fibers from PHAs with different compositions: P(3HB) and its copolymers P(3HB-co-4HB), P(3HB-co-3HV), and P(3HB-co-3HHx). The main process parameters, that influence UF-fiber diameter and properties of fibrous non-woven membranes) (polymer concentration, solution feeding rate, working distance, and applied voltage), were investigated and their effects evaluated. This study was the first to compare biological and physical/mechanical parameters of PHAs with different chemical compositions as dependent upon the fractions of monomers, constituting the polymers and fiber orientation. Electrospun polymer membranes, prepared from the [P(3HB-co-4HB)], were tested as wound dressings. The developed nonwoven membranes can be used as the equivalent of collagen skine dressings in the treatment of burns of degree II. Experiments on laboratory animals with model skin defects showed, that the membranes fitted the wound shape good, protected the wound from external influences, and facilitated wound healing, promoting fast repair. The successful experiments on laboratory animals were followed by pilot clinical trials of nanomembranes, comprised of PHA membranes as wound dressings in the treatment of septic wounds. During the regeneration phase, PHA membranes served as a scaffold for the new tissue on the skin and filled out soft tissue defects. The formation of the uniform and sufficiently vascularized tissue is a prerequisite for quicker wound healing and can serve as a basis for the subsequent skin grafting and spontaneous re-epithelialization of superficial wounds. The wound dressing, tested in this clinical trial, performs important physiological functions of natural skin, provides a barrier against secondary infection, reduces fluid loss, and, at the same time, does not keep the air out. © 2017 Nova Science Publishers, Inc.

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Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Volova, T. G.; Goncharov, D. B.; Nikolaeva, E. D.; Shishatskaya, E. I.

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11.

Biological aspects of the associations of biting midges (Diptera: Ceratopogonidae) in two saline rivers of the Elton Lake Basin, Russia / L. V. Golovatyuk [et al.] // Mar. Freshw. Res. - 2018. - Vol. 69, Is. 6. - P906-916, DOI 10.1071/MF17125 . - ISSN 1323-1650
Кл.слова (ненормированные):
biomarker fatty acids -- ceratopogonid larvae -- saline rivers -- secondary production -- algae -- Bacillariophyta -- Ceratopogonidae -- Diptera -- Palpomyia
Аннотация: We studied species composition, density, biomass and production of larvae of the family Ceratopogonidae in two saline rivers (Volgograd region, Russia). Ceratopoponids make up an important part of macroinvertebrate community in these rivers. Average monthly production (dry weight) of ceratopogonid larvae in the rivers was 3.5-4.8 g m -2 month -1 in May and ?0.9 g m -2 month -1 in August. For the first time, feeding spectra of ceratopogonid larvae, Palpomyia schmidti Goetghebuer, 1934, was studied using fatty acid analyses. The larvae of P. schmidti appeared to selectively consume diatoms and other algae and to avoid bacteria and decomposed dead organic matter (detritus) of low nutritive quality. © CSIRO.

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Держатели документа:
Institute of Ecology of the Volga River Basin, Russian Academy of Sciences, Komzina Street 10, Togliatti, Russian Federation
Institute of Biophysics of Federal Research Center, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny Avenue 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Golovatyuk, L. V.; Zinchenko, T. D.; Sushchik, N. N.; Kalachova, G. S.; Gladyshev, M. I.

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12.

Morphological specificities of vendace (Salmoniformes: Salmonidae: Coregoninae: Coregonus albula) population in Lake Pleshcheyevo (the Volga River basin): relationships of two phylogenetic lineages in a new zone of secondary contact / E. A. Borovikova, V. S. Artamonova // Org. Divers. Evol. - 2018. - Vol. 18, Is. 3. - P355-366, DOI 10.1007/s13127-018-0375-5. - Cited References:46. - The preparation of this manuscript was supported by the Russian Science Foundation, grant no. 16-14-10001. . - ISSN 1439-6092. - ISSN 1618-1077

РУБ Evolutionary Biology + Zoology
Рубрики:
ECOLOGICAL DIVERGENCE
   SPECIES PAIR
   ORIGIN
   EVOLUTIONARY
   WHITEFISH
Кл.слова (ненормированные):
Vendace -- Morphological characters -- Allopatric origin -- Phylogenetic -- lineages -- Lake Pleshcheyevo
Аннотация: This is the report about the secondary contact zone of coregonids in the Upper Volga basin. Two mitochondrial DNA (mtDNA) phylogenetic lineages of vendace Coregonus albula (Linnaeus, 1758) living in Lake Pleshcheyevo have been analyzed and compared in terms of morphological characters. These lineages have developed under the conditions of allopatry and are characterized by strong differences of the mitochondrial DNA sequences. The lineages have coexisted in the same lake since the last glaciation maximum (about 10,000years ago). The morphological analysis has shown that representatives of both lineages correspond to C. albula, while slight, morphological variations between lineages indicate different food preferences and locomotor abilities. Scenarios where multiple distinct coexisting phylogenetic lineages are characterized by low levels of morpho-ecological divergence are uncommon. These situations are important for understanding biodiversity dynamics and the mechanisms that drive coexistence, adaptive divergence, hybridization, and extinction when genetically divergent lineages meet in secondary contact.

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Держатели документа:
RAS, Papanin Inst Biol Inland Waters, Lab Fish Ecol, Borok 152742, Yaroslavl Regio, Russia.
RAS, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.
RAS, Severtsov Inst Ecol & Evolut, Leninski Prosp 33, Moscow 119071, Russia.

Доп.точки доступа:
Borovikova, Elena A.; Artamonova, Valentina S.; Russian Science Foundation [16-14-10001]

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13.

Structural transitions of photobacterium leiognathi luciferase determined by various optical techniques under urea-induced equilibrium denaturation / D. V. Gulnov [и др.] // Tsitologiya. - 2018. - Vol. 60, Is. 10. - С. 847-850, DOI 10.7868/S0041377118100181 . - ISSN 0041-3771
Кл.слова (ненормированные):
Bacterial luciferase -- Circular dichroism -- Denaturation -- Protein fluorescence lifetime -- Protein intermediate states
Аннотация: The study was aimed to identification of conformational transitions of Photobacterium leiognathi luciferase during equilibrium denaturation with urea using several optical techniques, including circular dichroism, stationary and time-resolved fluorescence. Gravity center and intensity ratio I 325 /I 390 for the fluorescence spectra, molar ellipticity at 222 nm and fluorescence lifetimes of the protein were analyzed. Investigated parameters revealed two possible transitions for P. leiognathi luciferase with the midpoints at 0.5—1.1 and 3.5—4.2 M of urea. Changes in the values of two lifetime components, characterizing the luciferase fluorescence reflect both transitions, while steady-state fluorescence parameters (gravity center of spectrum and I 325 /I 390 ratio) reveal only the second one. Far-UV circular dichroism spectra displayed transitions at 4.2 M of urea for P. leiognathi luciferase. Conformational transitions characteristics of P. leiognathi luciferase and previously studied Vibrio harveyi luciferase (Inlow et al., 2002) were compared. Since, according to the published data for V. harveyi, midpoint of the second conformational transition is at about 2.5 M of urea, the results indicate more stable secondary structure for the P. leiognathi luciferase under study. The possible reasons for observed differences in fluorescent characteristics of two types of luciferases during denaturation can be connected to the microenvironment variation of the tryptophan residues in their tertiary structure, namely in position 131 and 277 in a-subunit. © 2018 Sankt Peterburg. All rights reserved.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Gulnov, D. V.; Nemtseva, E. V.; Gerasimova, M. A.; Kratasyuk, V. A.

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14.

Preliminary estimation of the export of omega-3 polyunsaturated fatty acids from aquatic to terrestrial ecosystems in biomes via emergent insects / M. I. Gladyshev, E. E. Gladysheva, N. N. Sushchik // Ecol. Complex. - 2019. - Vol. 38. - P140-145, DOI 10.1016/j.ecocom.2019.03.007. - Cited References:84. - The work was supported by the project of Siberian Federal University, carried out according to Federal Tasks of Ministry of Education and Science of the Russian Federation No. 6.1504.2017/PCh and by Russian Federal Tasks of Fundamental Research (project No. 51.1.1). We are grateful to two anonymous Reviewers for their kind help to significantly improve the manuscript. . - ISSN 1476-945X. - ISSN 1476-9840

РУБ Ecology
Рубрики:
BENTHIC SECONDARY PRODUCTION
RECIPROCAL SUBSIDIES
FRESH-WATER
Кл.слова (ненормированные):
Eicosapentaenoic acid -- Docosahexaenoic acid -- Aquatic-terrestrial -- subsidies -- Food quality -- Water/land area ratio
Аннотация: Some terrestrial consumers may be limited by food quality, namely by contents of essential polyunsaturated fatty acids (PUFA), eicosapentaenoic acid (20:5n - 3, EPA) and docosahexaenoic acid (22:6n - 3, DHA) in their food. Since EPA and DHA are mainly produced in aquatic ecosystems, for future estimating of the potential limitation by food quality in global scale, the water-land fluxes of these PUFA with the biomass of emergent aquatic insects in several biomes were calculated. The water /land area ratios for each biome were calculated by dividing the water area of each biome by its terrestrial area. Data on insect emergence from water bodies (g of dry mass m(-2) year(-1)), were summarized and averaged for each biome. From available data, EPA and DHA contents (mg g(-1) dry mass), in the biomass of emergent aquatic insects were calculated first so that annual fluxes of PUFA to land area via aquatic insect emergence could be estimated for each biome. PUFA fluxes occurred between the biomes, ranging from 0.04 to 4.39 mg m(-2) year(-1). In this study, the aquatic PUFA supply to land area appeared to be significantly lower than estimated earlier. This suggests that terrestrial consumers may experience food quality limitations mediated by shortage of PUFA compounds.

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Держатели документа:
Siberian Fed Univ, Svobodny Av 79, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Biophys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Gladyshev, Michail, I; Gladysheva, Elena E.; Sushchik, Nadezhda N.; Siberian Federal University [6.1504.2017/PCh]; Russian Federal Tasks of Fundamental Research [51.1.1]

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15.

Reporter-recruiting bifunctional aptasensor for bioluminescent analytical assays / A. Davydova, V. Krasitskaya, P. Vorobjev [et al.] // RSC Adv. - 2020. - Vol. 10, Is. 54. - P32393-32399, DOI 10.1039/d0ra05117a. - Cited References:33. - The work was supported by the Russian Science Foundation (grant #16-14-10296), Russian State funded budget projects #AAAA-A17-117020210021-7 to ICBFM SB RAS and #AAAA-A19-119031890015-0 to IBP SB RAS. . - ISSN 2046-2069

РУБ Chemistry, Multidisciplinary
Рубрики:
DNA APTAMER
   RNA APTAMER
   OBELIN
   PURIFICATION
   EXPRESSION
   SEQUENCES
Аннотация: We report a novel bioluminescent aptasensor, which consists of 2 '-F-RNA aptamer modules joined into a bi-specific aptamer construct. One aptamer module binds the analyte, then after structural rearrangement the second module recruits non-covalently Ca2+-dependent photoprotein obelin from the solution, thus providing a bioluminescent signal. This concept allows using free protein as a reporter, which brings such advantages as no need for aptamer-protein conjugation, a possibility of thermal re-folding of aptamer component with no harm to a protein, and simpler detection protocol. We developed the new 2 '-F-RNA aptamer for obelin, and proposed the strategy for engineering structure-switching bi-modular aptamer constructs which bind the analyte and the obelin in a sequential manner. With the use of hemoglobin as a model analyte, we showed the feasibility of utilizing the aptasensor in a fast and straightforward bioluminescent microplate assay. With a proper design of a secondary structure, this strategy of aptasensor engineering might be further extended to bi-specific aptamer-based bioluminescent sensors for other analytes of interest.

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Держатели документа:
SB RAS, Inst Chem Biol & Fundamental Med, Novosibirsk 630090, Russia.
SB RAS, Inst Biophys, Fed Res Ctr, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Novosibirsk State Univ, Pimgova St 2, Novosibirsk 630090, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Davydova, Anna; Krasitskaya, Vasilisa; Vorobjev, Pavel; Timoshenko, Valentina; Tupikin, Alexey; Kabilov, Marsel; Frank, Ludmila; Venyaminova, Alya; Vorobyeva, Mariya; Russian Science FoundationRussian Science Foundation (RSF) [16-14-10296]; Russian State funded budget projects [AAAA-A17-117020210021-7, AAAA-A19-119031890015-0]

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16.

Long-Chain Alkenones in Saline Meromictic Lakes of the North Minusinsk Depression (Southern Siberia): First Knowledge and Possible Correlation with Water-Level Dynamics / D. Y. Rogozin, A. O. Bulkhin, V. V. Zykov [et al.] // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 6. - P643-655, DOI 10.1134/S199542552006013X . - ISSN 1995-4255
Кл.слова (ненормированные):
18S rRNA gene -- climate -- haptophyte algae -- long-chain alkenones -- meromictic lakes -- metagenomics -- paleolimnological reconstruction -- water level -- alkenone -- climate change -- community composition -- correlation -- hydrocarbon -- lake water -- microalga -- salinity -- secondary metabolite -- water level -- Canada -- North America -- Saskatchewan -- Siberia -- Haptophyceae -- Isochrysis
Аннотация: Abstract: Long-chain alkenones (LCAs)—lipides produced by some microalgae of the Haptophyta group in seas and continental water bodies—are promising paleomarkers of climate changes because they are well-preserved in bottom sediments. The hydrocarbon chain and the degree of unsaturation of double bonds of this class of lipides can vary depending on habitat conditions of their producers. For the first time, we have discovered LCAs in the bottom sediments of two saline meromictic lakes Shira and Uchum located in arid steppes of southern Siberia (the North Minusinsk Depression) and estimated the distribution of their total content, length, and the degree of unsaturation. The highly abundant population of producers of LCAs—haptophyte algae of the genus Isochrysis (Haptophyta)—is revealed in the water column of Lake Uchum. It is shown that the species composition of the haptophyte algae and composition of the LCAs in the lakes under study are similar to those in saline stratified lakes of North America (Saskatchewan, Canada) with a similar climate and salt composition. The abundance of the С37:4 alkenone in the bottom sediments in the last 100 years reflected the variations in lake salinity caused by the documented changes in the water level. In this way, it is shown that the LCAs may be used as a paleomarker of climate-driven changes in the water level of the saline lakes in southern Siberia. © 2020, Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Rogozin, D. Y.; Bulkhin, A. O.; Zykov, V. V.; Ivanova, E. A.; Darin, A. V.; Kalugin, I. A.; Baturina, O. A.; Kabilov, M. R.

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17.

Efficiency of Transfer of Essential Substances from Phytoplankton to Planktonic Crustaceans in Mesotrophic Conditions / I. Y. Feniova, E. G. Sakharova, Z. F. Buseva [et al.] // Inland Water Biol. - 2021. - Vol. 14, Is. 1. - P49-59, DOI 10.1134/S1995082920040033 . - ISSN 1995-0829
Кл.слова (ненормированные):
carbon -- efficiency of transfer of substances -- fish -- mesocosms -- mesotrophic conditions -- nitrogen -- phosphorus -- phytoplankton -- planktonic crustaceans -- primary and secondary production
Аннотация: Abstract: We assessed the efficiency of the transfer of essential substances (carbon, phosphorus, nitrogen, and fatty acids (FA), including polyunsaturated fatty acids (PUFAs)) from phytoplankton to planktonic crustaceans in experimental mesocosms in the presence and absence of fish. The experiments were conducted under mesotrophic conditions in 300 L mesocosms. We have found that transfer efficiencies from producers to consumers are different for different substances. In particular, FA, including PUFAs, are transferred less efficiently than carbon. In contrast, the efficiency of nutrient transfer, especially phosphorus, is higher than that of carbon. This evidences that zooplankton can accumulate nutrients, increasing their quality as a resource for higher trophic levels. Fish significantly reduced the efficiency of carbon transfer from phytoplankton to zooplankton per unit of water volume, but did not affect the transfer of substances per unit of biomass. Thus, the quality of zooplankton as a food resource for higher trophic levels did not decrease in the presence of fish, despite the decline in the efficiency of the transfer of the essential substances per unit of water volume under their influence. Since the efficiency of essential substances transfered from phytoplankton to zooplankton determines the functioning of the entire trophic web, we should seek ways to increase it. © 2021, Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russian Federation
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Nekouzskii raion, Yaroslavl oblast, Borok, Russian Federation
Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus, Minsk, Belarus
Institute of Biophysics of Federal Research Centre, Krasnoyarsk Science Centre, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Hydrobiology, Institute of Biology, University of Bialystok, Bialystok, Poland

Доп.точки доступа:
Feniova, I. Y.; Sakharova, E. G.; Buseva, Z. F.; Gladyshev, M. I.; Sushchik, N. N.; Gorelysheva, Z. I.; Karpowicz, M.; Semenchenko, V. P.

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18.

РУБ Marine & Freshwater Biology

Кл.слова (ненормированные):
primary and secondary production -- carbon -- nitrogen -- phosphorus -- phytoplankton -- planktonic crustaceans -- fish -- mesotrophic conditions -- efficiency of transfer of substances -- mesocosms
Аннотация: We assessed the efficiency of the transfer of essential substances (carbon, phosphorus, nitrogen, and fatty acids (FA), including polyunsaturated fatty acids (PUFAs)) from phytoplankton to planktonic crustaceans in experimental mesocosms in the presence and absence of fish. The experiments were conducted under mesotrophic conditions in 300 L mesocosms. We have found that transfer efficiencies from producers to consumers are different for different substances. In particular, FA, including PUFAs, are transferred less efficiently than carbon. In contrast, the efficiency of nutrient transfer, especially phosphorus, is higher than that of carbon. This evidences that zooplankton can accumulate nutrients, increasing their quality as a resource for higher trophic levels. Fish significantly reduced the efficiency of carbon transfer from phytoplankton to zooplankton per unit of water volume, but did not affect the transfer of substances per unit of biomass. Thus, the quality of zooplankton as a food resource for higher trophic levels did not decrease in the presence of fish, despite the decline in the efficiency of the transfer of the essential substances per unit of water volume under their influence. Since the efficiency of essential substances transfered from phytoplankton to zooplankton determines the functioning of the entire trophic web, we should seek ways to increase it.

WOS
Держатели документа:
Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow, Russia.
Russian Acad Sci, Papanin Inst Biol Inland Waters, Nekouzskii Raion, Yaroslavl Oblas, Russia.
Natl Acad Sci Belarus, Sci & Pract Ctr Bioresources, Minsk, BELARUS.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Biophys, Fed Res Ctr,Siberian Branch, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Univ Bialystok, Inst Biol, Dept Hydrobiol, Bialystok, Poland.

Доп.точки доступа:
Feniova, I. Yu; Sakharova, E. G.; Buseva, Zh F.; Gladyshev, M., I; Sushchik, N. N.; Gorelysheva, Z., I; Karpowicz, M.; Semenchenko, V. P.; Polish National Science Centre [UMO-506 2016/21/B/NZ8/00434]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-5400002 Bel_a]; Belarusian Republican Foundation for Fundamental Research [B18R004]; Russian Science FoundationRussian Science Foundation (RSF) [16-14-10323]; [AAAA-A18-118012690096-1]

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19.

Biogenic Ferrihydrite Nanoparticles: Synthesis, Properties In Vitro and In Vivo Testing and the Concentration Effect / S. V. Stolyar, O. A. Kolenchukova, A. V. Boldyreva [et al.] // Biomedicines. - 2021. - Vol. 9, Is. 3. - Ст. 323, DOI 10.3390/biomedicines9030323. - Cited References:52. - This research was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory and the Regional Science Foundation, grant number 20-416-242907. . - ISSN 2227-9059

РУБ Biochemistry & Molecular Biology + Medicine, Research & Experimental

Кл.слова (ненормированные):
ferrihydrite nanoparticles -- concentration effect -- microorganisms -- Klebsiella oxytoca -- neutrophilic granulocytes -- chemiluminescence -- toxicology
Аннотация: Biogenic ferrihydrite nanoparticles were synthesized as a result of the cultivation of Klebsiella oxytoca microorganisms. The distribution of nanoparticles in the body of laboratory animals and the physical properties of the nanoparticles were studied. The synthesized ferrihydrite nanoparticles are superparamagnetic at room temperature, and the characteristic blocking temperature is 23-25 K. The uncompensated moment of ferrihydrite particles was determined to be approximately 200 Bohr magnetons. In vitro testing of different concentrations of ferrihydrite nanoparticles for the functional activity of neutrophilic granulocytes by the chemiluminescence method showed an increase in the release of primary oxygen radicals by blood phagocytes when exposed to a minimum concentration and a decrease in secondary radicals when exposed to a maximum concentration. In vivo testing of ferrihydrite nanoparticles on Wister rats showed that a suspension of ferrihydrite nanoparticles has chronic toxicity, since it causes morphological changes in organs, mainly in the spleen, which are characterized by the accumulation of hemosiderin nanoparticles (stained blue according to Perls). Ferrihydrite can also directly or indirectly stimulate the proliferation and intracellular regeneration of hepatocytes. The partial detection of Perls-positive cells in the liver and kidneys can be explained by the rapid elimination from organs and the high dispersion of the nanomaterial. Thus, it is necessary to carry out studies of these processes at the systemic level, since the introduction of nanoparticles into the body is characterized by adaptive-proliferative processes, accompanied by the development of cell dystrophy and tension of the phagocytic system.

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Держатели документа:
RAS, Kirensky Inst Phys, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Biophys, Krasnoyarsk 660041, Russia.
RAS, Sci Res Inst Med Problems North, Fed Res Ctr KSC SB, Krasnoyarsk 660022, Russia.
RAS, Inst Biophys, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Stolyar, Sergey V.; Kolenchukova, Oksana A.; Boldyreva, Anna V.; Kudryasheva, Nadezda S.; Gerasimova, Yulia V.; Krasikov, Alexandr A.; Yaroslavtsev, Roman N.; Bayukov, Oleg A.; Ladygina, Valentina P.; Birukova, Elena A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk Territory; Regional Science Foundation [20-416-242907]

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20.

EFFECTS OF FISH ON THE TRANSFER EFFICIENCY OF CARBON, PUFA AND NUTRIENTS FROM PHYTOPLANKTON TO ZOOPLANKTON UNDER EUTROPHIC CONDITIONS / I. Y. Feniova, E. G. Sakharova, M. I. Gladyshev [и др.] // Zool. Zhurnal. - 2021. - Vol. 100, Is. 2. - С. 194-208, DOI 10.31857/S0044513421020215. - Cited References:49 . - ISSN 0044-5134

РУБ Zoology
Рубрики:
FATTY-ACIDS
   FOOD QUALITY
   FRESH-WATER
   ZEBRA MUSSELS
   PHOSPHORUS
Кл.слова (ненормированные):
primary and secondary production -- carbon -- nitrogen -- phosphorus -- phyto- -- and zooplankton -- fish -- eutrophic conditions -- efficiency of substance -- transfer -- mesocosm
Аннотация: The efficiency of the transfer of carbon, polyunsaturated fatty acids (PUFA), nitrogen and phosphorus from phytoplankton to zooplankton determines the functioning of the entire ecosystem. However, this parameter depends on environmental conditions. Fish as a very important factor to regulate planktonic communities are very likely to affect the efficiency of the transfer of basic elements and substances from phytoplankton to zoo plankton. In experimental mesocosms filled with water from an eutrophic lake and containing phyto- and zooplankton, we investigated how fish affect both primary and secondary production and the efficiency of transfer of carbon, nitrogen, phosphorus, PUFA and fatty acids (FA) from phytoplankton to zooplankton. Two treatments (control and fish treatment) were repeated in three replicates. The transfer efficiency of substances from phytoplankton to zooplankton was measured as the ratio of secondary to primary production, expressed in liters and per biomass unit in percent. The efficiency expressed per liter characterizes the productivity of the water body, while the efficiency expressed per biomass unit indicates the effectiveness of aquatic species to transfer biologically valuable substances from one trophic level to another. We found that phytoplankton-zooplankton-fish interactions are determined not only by predator-prey relationships, but also are affected by the quality of both phytoplankton and zooplankton, measured as the contents of phosphorus, nitrogen, PUFA and FA in their biomass. We showed that, in the presence of fish, the transfer efficiency of carbon, phosphorus, nitrogen, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), FA per biomass unit from phytoplankton to zooplankton was increased two-fold, 12.4-fold, 2,5-fold, 12.4-fold, 7.4-fold, and 10-fold, respectively, relative to control. This provides the sustainability of the functioning of the ecosystem under fish pressure. Such a mechanism prevents zooplankton over-exploitation by fish and enables to prolong the food chain.

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Держатели документа:
Russian Acad Sci, Inst Ecol & Evolut, Moscow 119071, Russia.
Russian Acad Sci, Papanin Inst Biol Inland Waters, Borok 152742, Russia.
Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Natl Acad Sci Belarus, Sci & Pract Ctr Bioresources, Minsk 220072, BELARUS.
Univ Bialystok, Inst Biol, Dept Hydrobiol, PL-15245 Bialystok, Poland.

Доп.точки доступа:
Feniova, I. Yu; Sakharova, E. G.; Gladyshev, M., I; Sushchik, N. N.; Gorelysheva, Z., I; Karpowicz, M.

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