Библиотека института биофизики СО РАН

Главная

Базы данных

Труды сотрудников ИБФ СО РАН - результаты поиска

Вид поиска

Каталог книг и продолжающихся изданий библиотеки Института биофизики СО РАН

Иностранные журналы библиотеки Института биофизики СО РАН

Отечественные журналы библиотеки Института биофизики СО РАН

Каталог диссертаций ИБФ СО РАН

Труды сотрудников ИБФ СО РАН

Область поиска

в найденном

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=cyanobacterium<.>)

Общее количество найденных документов : 24
Показаны документы с 1 по 20

1-20 21-24

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kratasyuk V.A., Esimbekova E.N., Gladyshev M.I., Khromichek E.B., Kuznetsov A.M., Ivanova E.A.
Заглавие : The use of bioluminescent biotests for study of natural and laboratory aquatic ecosystems
Место публикации : Chemosphere. - 2001. - Vol. 42, Is. 8. - С. 909-915. - ISSN 00456535 (ISSN) , DOI 10.1016/S0045-6535(00)00177-6
Ключевые слова (''Своб.индексиров.''): alcohol dehydrogenase--bacterial luciferase--bioluminescence--blooming--pollution--trypsin--water toxicity--alcohol dehydrogenase--benzoquinone--luciferase--trypsin--aquatic ecosystem--bioluminescence--water quality--article--bacterium culture--bioluminescence--blue green alga--ecosystem--pond--seasonal variation--water pollution--water quality--benzoquinones--biological assay--cyanobacteria--ecosystem--environmental monitoring--eutrophication--fmn reductase--indicators and reagents--luminescent measurements--nadh, nadph oxidoreductases--water pollutants--russian federation--algae--bacteria (microorganisms)--chlorophyta--cyanobacteria--uncultured cyanobacterium
Аннотация: A set of bioluminescent tests was developed to monitor water quality in natural and laboratory ecosystems. It consisted of four bioluminescent systems: luminous bacteria, coupled enzyme system NADH:FMN-oxidoreductase-luciferase and triplet enzyme systems with alcohol dehydrogenase and trypsin. The set of biotests was applied for a small forest pond (Siberia, Russia), laboratory microecosystems polluted with benzoquinone and a batch culture of blue-green algae. Thereby effects of natural water compared to those of models of heavy pollution and "bloom" of blue-greens on the bioluminescent tests were revealed. The set of biotests was not affected by a natural seasonal variability of water quality in the unpolluted pond, but responded to the heavy pollution and the "bloom" of blue-greens. The set of biotests could be recommended as the alarm test to control the acute toxicity of natural water bodies. В© 2001 Elsevier Science Ltd.
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makhutova O.N., Sushchik N.N., Kalacheva G.S.
Заглавие : The information value of fatty acid composition of triacylglycerols and polar lipids of seston in assaying the food spectrum of microzooplankton in the bugach reservoir.
Место публикации : Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections / translated from Russian. - 2004. - Vol. 395. - С. 143-145. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): fatty acid--fresh water--lipid--triacylglycerol--article--bacterium--biomass--chemistry--cyanobacterium--diatom--ecosystem--metabolism--physiology--phytoplankton--russian federation--season--bacteria--biomass--cyanobacteria--diatoms--ecosystem--fatty acids--fresh water--lipids--phytoplankton--russia--seasons--triglycerides
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lobova T.I., Zagrebel'nyi S.N., Popova L.Y.
Заглавие : The influence of salt concentration on the copy number of plasmid pSH1 replicating in Micrococcus sp 9
Колич.характеристики :7 с
Место публикации : Microbiology: MAIK NAUKA/INTERPERIODICA, 2005. - Vol. 74, Is. 3. - P296-302. - ISSN 0026-2617, DOI 10.1007/s11021-005-0066-z
Примечания : Cited References: 19
Предметные рубрики: CYANOBACTERIUM-SYNECHOCOCCUS SP
ENDOGENOUS PLASMID
Ключевые слова (''Своб.индексиров.''): saline lakes--halotolerance--heterotrophic bacteria--plasmids
Аннотация: The study of heterotrophic bacteria isolated from the brackish waters of Lake Shira has shown that some of them contain plasmid pSH1 of approximately 2.7 kb in size. The number of plasmid copies in plasmid-containing strains cultivated at a minimal concentration of sodium chloride is found to be low, whereas the sub-culturing of these strains at high salt concentrations increases the plasmid number. The role of natural pSH1 plasmid in the osmotolerance of host bacteria is discussed.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F., Vasil'yev V.A.
Заглавие : Spectral brightness of inland waters and its correlation with phytoplankton content and hydrooptical characteristics
Место публикации : Hydrobiological Journal. - 1988. - Vol. 24, Is. 5. - С. 64-71. - ISSN 00188166 (ISSN)
Ключевые слова (''Своб.индексиров.''): cyanobacteria--diatom--light attenuation--pyrrhophyte--spectral brightness--ussr, dnieper--ussr, krasnoyarsk reservoir--algae--bacillariophyta--chlorophyta--cyanobacteria--dinophyceae--uncultured cyanobacterium
Аннотация: Spectral brightness coefficients are correlated with indices of vertical attenuation of horizontal irradiance, water transparency, phytoplankton chlorophyll content, and phytoplankton distribution. Data were obtained from Krasnoyarsk Reservoir and the Dnieper reservoirs. When diatoms and pyrrhophytes predominate, the maximum spectral brightness is in the vicinity of 580 nm, but when blue-green algae predominate the maxima are in the vicinity of 550 and 720 nm. -from Authors
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I., Gladyshev M.I., Kravchuk E.S., Chuprov S.M., Anishchenko O.V., Ivanova E.A., Trusova M.Yu.
Заглавие : Species-specific stimulation of cyanobacteria by silver carp Hypophthalmichthys molitrix (Val.)
Место публикации : Doklady Biological Sciences. - 2006. - Vol. 408, Is. 1. - С. 223-225. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496606030069
Ключевые слова (''Своб.индексиров.''): animal--article--carp--cyanobacterium--growth, development and aging--microbiology--species difference--animals--carps--cyanobacteria--species specificity--cyanobacteria--cyprinus carpio--hypophthalmichthys molitrix--hypophthalmichthys nobilis
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kravchuk E.S., Ivanova E.A., Gladyshev M.I.
Заглавие : Spatial distribution of resting stages (akinetes) of the cyanobacteria Anabaena flos-aquae in sediments and its influence on pelagic populations
Место публикации : Marine and Freshwater Research. - 2011. - Vol. 62, Is. 5. - С. 450-461. - ISSN 13231650 (ISSN) , DOI 10.1071/MF10256
Ключевые слова (''Своб.индексиров.''): cyanobacterial blooms--harmful algae--reservoir--resting stages--sediment management--water quality--abundance--bioaccumulation--biomass--cyanobacterium--environmental factor--experimental study--green alga--inoculation--littoral environment--macrophyte--pelagic environment--phytoplankton--population structure--qualitative analysis--recruitment (population dynamics)--reservoir--seasonal variation--sediment analysis--silt--spatial distribution--vertical distribution--water quality--siberia--algae--anabaena flos-aquae--cyanobacteria
Аннотация: Recruitment of pelagic populations of cyanobacteria from littoral bottom sediments is assumed to be one of the key factors for the development of harmful blooms. Therefore, it is necessary to obtain more information on the possible factors influencing the spatial distribution of the resting stages in littoral bottom sediments. To test the hypothesis that akinete abundances in littoral bottom sediments are associated with silt and the presence of higher water plants, we sampled spatial and vertical distribution and seasonal dynamics of akinetes of cyanobacterium Anabaena flos-aquae in a small Siberian reservoir. We found that akinetes accumulate in silt at stations located in macrophyte beds. Two experiments were carried out to test if there is relationship between size of inoculum and size of the pelagic population of A. flos-aquae. The proportion of A. flos-aquae in total phytoplankton biomass depended on the initial abundance of akinetes in bottom sediments. The model based on laboratory experiments gave good qualitative description of the field data. These findings can be useful to predict the location of the main akinete accumulation zones in a water body and plan the removal of sediment to prevent the cyanobacterial blooms. В© CSIRO 2011.
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Kalacheva G.S., Gladyshev M.I.
Заглавие : Secretion of free fatty acids by prokaryotic and eukaryotic algae at optimal, supraoptimal, and suboptimal growth temperatures
Место публикации : Mikrobiologiya. - 2001. - Vol. 70, Is. 5. - С. 629-635. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): free fatty acids--microalgae--secretion--fatty acid--article--chemistry--chlorella--cyanobacterium--cytology--extracellular space--growth, development and aging--intracellular fluid--temperature--chlorella--cyanobacteria--english abstract--extracellular space--fatty acids, nonesterified--intracellular fluid--temperature
Аннотация: Abstract-The paper describes the composition of extracellular free fatty acids (FFAs) and intracellular fatty acids (FAs) in the enrichment cultures of the prokaryotic alga Spirulina platensis and the eukaryotic alga Chlorella vulgaris grown at optimal, supraoptimal, and suboptimal growth temperatures. With increasing growth temperature, the degree of unsaturation of the intracellular FAs of both algae decreased, while that of the extracellular FFAs of 5. platensis increased. The composition of the extracellular FFAs of C. vulgaris practically did not depend on the growth temperature.
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I.
Заглавие : Role of Microcystis aeruginosa passing through the digestive tracts of filter-feeding animals in eutrophic water reservoirs (review)
Колич.характеристики :10 с
Коллективы : Federal Targeted Program "Scientific and Scientific-Pedagogical Personnel of an Innovative Russia" [16.740.11.0484]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2014. - Vol. 7, Is. 4. - С. 455-464. - ISSN 1995-4255, DOI 10.1134/S1995425514040052. - ISSN 1995-4263
Примечания : Cited References: 100. - This study was performed at the Siberian Federal University (project "Ecological and Biophysical Mechanisms of the Quality of Production in the Aquatic Ecosystems of the Yenisei River Basin") within the framework of the State Requirement of the Ministry of Education and Science of the Russian Federation for the provision of services (performance of activities), as well as by the Federal Targeted Program "Scientific and Scientific-Pedagogical Personnel of an Innovative Russia" (project no. 16.740.11.0484).
Предметные рубрики: CARP HYPOPHTHALMICHTHYS-MOLITRIX
TILAPIA OREOCHROMIS-NILOTICUS
MUSSEL DREISSENA-POLYMORPHA
BLOOM-FORMING CYANOBACTERIUM
VIABLE GUT PASSAGE
LOW-NUTRIENT LAKES
ZEBRA MUSSEL
PHYTOPLANKTIVOROUS FISH
SELECTIVE FILTRATION
ALGAL COMPOSITION
Ключевые слова (''Своб.индексиров.''): microcystis aeruginosa--viable gut passage--water bloom--planktivorous fish--daphnia--bivalves--eutrophic reservoirs
Аннотация: The foreign and Russian literature devoted to studying the effect of enhancing the growth of colonies of the cyanobacterium Microcystis aeruginosa Kutz em. Elenk. after their passage in a viable state through the digestive tract of filter-feeding aquatic animals (planktivorous fish, daphnia, and bivalves) has been analyzed. The main mechanisms of this effect are considered. Its role in the functioning of eutrophic reservoirs is discussed. The prospects and the need for further studies of the effect of enhancing Microcyctis growth after its viable passage through the digestive tracts of filter-feeding animals are shown for the development of a complete theory of the functioning of aquatic ecosystems.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kravchuk E.S., Anisimova T.V.
Заглавие : Potential effect of macrophyte beds on number of akinetes of blue-green algae in littoral of a body of water
Место публикации : Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - С. 430-433. - ISSN 19954255 (ISSN) , DOI 10.1134/S1995425512040087
Ключевые слова (''Своб.индексиров.''): akinetes--blue-green algae--bottom sediments--resting stages--water bloom--algal bloom--cyanobacterium--lacustrine deposit--littoral environment--macrophyte--reservoir--siberia--chlorophyta
Аннотация: The distribution of the resting stages of blue-green algae (akinetes) in bottom sediments of the littoral of a small Siberian water reservoir has been studied. The irregularity (mosaicism) of the distribution of akinetes in the bottom sediments of the littoral has been demonstrated and the possible mechanisms of its formation have been analyzed. В© 2012 Pleiades Publishing, Ltd.
Scopus
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Kalachova G.S., Kravchuk E.S., Dubovskaya O.P., Ivanova E.A.
Заглавие : Particulate fatty acids in two small Siberian reservoirs dominated by different groups of phytoplankton
Место публикации : Freshwater Biology. - 2003. - Vol. 48, Is. 3. - С. 394-403. - ISSN 00465070 (ISSN) , DOI 10.1046/j.1365-2427.2003.01009.x
Ключевые слова (''Своб.индексиров.''): cyanobacteria--daphnids--diatoms--fatty acids--alga--cyanobacterium--fatty acid--periodicity--phytoplankton--reservoir--seston--algae--bacillariophyta--chlorophyta--cyanobacteria--daphnia--dinophyceae--euglenida--eukaryota
Аннотация: 1. We studied the composition of fatty acids (FAs) in the seston from two small freshwater reservoirs (Bugach and Lesnoi) with distinct periodicity of domination by cyanobacteria and eukaryotic algae during the growth season. 2. The diatoms in the both reservoirs were characterised by a high content of 14:0 and C16 unsaturated acids, whereas that of the essential FA 20:5?3 [eicosapentanoic acid (EPA)] was low. The correlation between this polyunsaturated FA (PUFA) and diatom biomass was not significant in either reservoir. The percentage of 20:5?3 in seston significantly correlated with the biomass of euglenophyta in Bugach and dinophyta in Lesnoi. Hence the diatoms, usually referred as a valuable food for zooplankton, were not an important source of the essential PUFA in these systems. 3. The dominant cyanobacteria in Bugach, and the green algae in Lesnoi, both contained the same marker acids: 18:3?3 and 18:2?6. Hence, a discrimination between these two phytoplanktonic groups on the basis of FA biomarkers may be difficult in some cases. 4. We found no significant correlation between the content of 20:5?3 in seston and the biomass of the dominant daphniids in either reservoir. This is contrary to expectations, based on the literature, that EPA is generally important. Rather, the biomass of the two dominant Daphnia species in Bugach correlated strongly with the content of 18:3?3 in the seston. The cyanobacteria were a probable source of this ?3 FA for Daphnia. We conclude that EPA is not always important for Daphnia populations although, in such cases, some other PUFA (e.g. 18:3?3) might be related to their growth.
Scopus
Найти похожие

11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsk A.Ya., Kosinenko S.V.
Заглавие : Intracellular phosphorus pool of the cyanobacterium spirulina platensis
Место публикации : Mikrobiologiya. - 2000. - Vol. 69, Is. 1. - С. 135-137. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): phosphorus--article--biomass--cyanobacterium--growth, development and aging--metabolism--biomass--cyanobacteria--phosphorus
Аннотация: An intracellular phosphorus pool in a monoculture of the cyanobacterium Spirulina platensis was assessed using radioactive and nonradioactive phosphorus. The derived dependence of specific growth rate on the intracellular content of mineral phosphorus can be presented in the form of the Droop equation. It was found that the stage of replenishment of the intracellular phosphorus pool may affect the phosphorus turnover estimation in aquatic environments from the results of short-term measurements of phosphorus uptake.
Scopus
Найти похожие

12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovskii A.Ya., Kosinenko S.V.
Заглавие : Intracellular phosphorus pool of the cyanobacterium spirulina platensis
Место публикации : Microbiology. - 2000. - Vol. 69, Is. 1. - С. 116-118. - ISSN 00262617 (ISSN)
Аннотация: An intracellular phosphorus pool in a monoculture of the cyanobacterium Spirulina platensis was assessed using radioactive and nonradioactive phosphorus. The derived dependence of specific growth rate on the intracellular content of mineral phosphorus can be presented in the form of the Droop equation. It was found that the stage of replenishment of the intracellular phosphorus pool may affect the phosphorus turnover estimation in aquatic environments from the results of short-term measurements of phosphorus uptake. В© 2000 MAIK "Nauka/Interperiodica".
Scopus
Найти похожие

13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Kolmakov V.I., Kravchuk E.S., Ivanova E.A., Trusova M.Y., Gribovskaya I.V., Zhilenkov M.D.
Заглавие : Growth and survival of cyanobacteria in water from blooming and nonblooming ponds under experimental conditions.
Место публикации : Doklady Biological Sciences. - 2000. - Vol. 375. - С. 607-609. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): chlorophyll--fresh water--phosphorus--anabaena--arctic--article--biomass--comparative study--cyanobacterium--growth, development and aging--microbiology--ph--plant--russian federation--season--anabaena--arctic regions--biomass--chlorophyll--cyanobacteria--fresh water--hydrogen-ion concentration--phosphorus--plants--russia--seasons
Scopus
Найти похожие

14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I., Gladyshev M.I.
Заглавие : Growth and potential photosynthesis of cyanobacteria are stimulated by viable gut passage in crucian carp
Место публикации : Aquatic Ecology. - 2003. - Vol. 37, Is. 3. - С. 237-242. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1025801326088
Ключевые слова (''Своб.индексиров.''): carassius auratus--cyanobacteria--gut passage--cyanobacterium--growth rate--photosynthesis--russian federation--anabaena--anabaena flos-aquae--aphanizomenon--aphanizomenon flos-aquae--carassius auratus--carassius carassius--cyanobacteria--cyprinus carpio--flos--microcystis--microcystis aeruginosa--planktothrix--planktothrix agardhii
Аннотация: Growth and potential photosynthetic activity of phytoplankton passed through intestine of crucian carp (Carassius auratus) from a small Siberian reservoir were compared with those of phytoplankton taken the directly from the reservoir. The dominant phytoplankton species in the reservoir, Microcystis aeruginosa, showed a significant increase of growth after the passage. Subdominant Planktothrix agardhii also showed an increase in growth rate, while subdominants Anabaena flos-aquae and Aphanizomenon flos-aquae were not stimulated by the gut passage.
Scopus
Найти похожие

15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Degermendzhy A.G., Belolipetsky V.M., Zotina T.A., Gulati R.D.
Заглавие : Formation of the vertical heterogeneity in the Lake Shira ecosystem: The biological mechanisms and mathematical model
Место публикации : Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - С. 271-297. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1015621508971
Ключевые слова (''Своб.индексиров.''): hydrogen sulphide--phytoplankton--stratification control--sulphate-reducing bacteria--sulphur cycle--vertical model--biological production--community structure--ecosystem modeling--nutrient cycling--plankton--saline lake--seasonal variation--vertical distribution--russian federation--algae--arctodiaptomus--bacteria (microorganisms)--calanoida--chlorophyta--copepoda--crustacea--cyanobacteria--dictyosphaerium--lyngbya--lyngbya contorta
Аннотация: Data on the seasonal changes in vertical heterogeneity of the physical-chemical and biological parameters of the thermally stratified Shira Lake ecosystem (Khakasia, Siberia) in 1996-2000 have been analyzed. The interaction mechanisms involving: (1) The plankton populations in aerobic and anaerobic zones, involving the cycling of carbon and sulphur, (2) the primary production limitation (by light and phosphorus) and inhibition (by light), and (3) the kinetic characteristics of plankton populations have been elucidated. A mathematical model of the vertical structure of the lake's plankton populations, based on the ecosystem description and on vertical turbulent diffusion of the matter, has been constructed. The green alga Dictyosphaerium tetrachotomum (Chlorophyta) and the cyanobacterium Lyngbya contorta (Cyanophyta), which dominated the phytoplankton biomass, were taken as oxygen producers. Arctodiaptomus salinus (a calanoid copepod) has been assumed as the main grazer in Shira Lake as it dominated the zooplankton biomass. Four groups of microorganisms involved in the sulphur cycle formation have been distinguished: sulphur, sulphur purple, sulphur green and SRB. H2S is oxidized to sulphate (only the green sulphur bacteria oxidize it to sulphur), and sulphate is reduced to H2S, forming neither sulphur nor its water-soluble compounds. The role of grazing, light and nutrient limitation, in forming the vertical inhomogeneities, particularly in lowering the depth of the maximal cyanobacterial biomass, has been demonstrated. When the model takes into account both light limitation and nutrient limitation of algal growth by P and consumption of algae by crustaceans: (a) in the scenario where the P is formed only by the cycling and decomposition of autochthonous organic matter, both the green algae and cyanobacteria are eliminated; (b) in the scenario involving an additional P flux in the deep water layers the peak of the cyanobacteria is at a depth of 10 m, and its amplitude is close to the one observed in the lake. The position of the peak remains stable owing to the 'double' limitation mechanism: light 'from above' and P 'from below'. Another mechanism responsible for the deep position of the peak of cyanobacteria was analyzed mathematically based on the model involving the experimentally proven assumption of the growth inhibition by light in the epilimnion and the light limitation in the hypolimnion. The main result is: the peak is positioned stable at its depth and does not change with time. The analytical and numerical calculations made for this positioning mechanism yielded the formulae relating the depth of the maximum of algal biomass, the 'width' of the peak base and the peak amplitude and a number of parameters (algae elimination, turbulent diffusion coefficient, sedimentation rate, light extinction coefficient and light intensity). The theoretical curves for the stratification of chemical and biological parameters have been brought in conformity with field observations, e.g. for the different patterns for the peaks, and the biomass maxima of cyanobacteria, purple and green sulphur bacteria, oxygen, and hydrogen sulphide. The calculations revealed that for an adequate assessment of the parameters for the hydrogen sulphide zone it is necessary to introduce flows of allochthonous organic matter. For the first time, theoretically, based on the form of the sulphur distribution curve, the allochthonous input of organic matter and the inflow of hydrogen sulphide from the bottom have been discriminated. The theoretical limit for the depth up to which the hydrogen-sulphide zone can ascend under the impact of allochthonous organic loading, has been determined.
Scopus
Найти похожие

16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeev A.P., Sushchik N.N., Gulati R.D., Makhutova O.N., Kalacheva G.S., Zotina T.A.
Заглавие : Feeding spectra of Arctodiaptomus salinus (Calanoida, Copepoda) using fatty acid trophic markers in seston food in two salt lakes in South Siberia (Khakasia, Russia)
Место публикации : Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - С. 513-530. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-010-9331-y
Ключевые слова (''Своб.индексиров.''): arctodiaptomus salinus--brackish lakes--fatty acids--feeding spectra--salinity adaptation--adaptation--bacterium--brackish water--ciliate--comparative study--crustacean--cyanobacterium--fatty acid--feeding behavior--flagellate--food selection--green alga--lipid--physicochemical property--picoplankton--saline lake--salinity--seasonality--seston--khakassia--russian federation--siberia--animalia--arctodiaptomus salinus--bacillariophyta--bacteria (microorganisms)--calanoida--chlorophyta--ciliophora--copepoda--cryptomonas--cryptophyta--cyanobacteria--mastigophora (flagellates)--proteobacteria
Аннотация: During two vegetation seasons (2004-2005), we compared feeding spectra of Arctodiaptomus salinus (Calanoida, Copepoda) populations inhabiting two neighboring salt lakes, Shira and Shunet, Khakasia, Russia, using fatty acid (FA) trophic markers. Sestonic FA composition in two lakes moderately differed, whereas levels of diatom FA markers were higher in Lake Shunet and of Cyanobacteria and green algae markers in Lake Shira. In general, markers in storage lipids-triacylglycerols (TAG) of A. salinus-reflected the differences in sestonic composition of the two lakes. Nevertheless, TAG fraction was also enriched by FA trophic markers of the minor components of seston, which were selectively ingested by the animals. In Lake Shira, A. salinus had significantly higher concentrations of bacterial FA markers in TAG. In Lake Shunet, TAG of A. salinus contained significantly higher relative amounts of 18:4?3, 18:5?3 and C22 polyunsaturated fatty acids (PUFA), which indicated marked contribution of cryptophytes or (and) flagellates into the diet. Laboratory experiments showed feeding on Cryptomonas and sulfur purple bacteria in Lake Shunet and ciliates and colonial picoplankton in both lakes, and generally confirmed the differences in FA trophic markers in A. salinus between the lakes. The two populations of A. salinus markedly differed in levels of essential long-chain PUFA, eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, although the levels of these FA in seston were quite similar between the two lakes. The higher levels of the essential ?3 PUFA in A. salinus in Lake Shunet may be an adaptive response of the animals to a vertical stratification of physico-chemical conditions and significantly higher salinity levels at the boundary of adjacent bottom layer in this lake. В© 2010 Springer Science+Business Media B.V.
Scopus
Найти похожие

17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Kravchuk E.S., Kolmakov V.I., Ivanova E.A., Trusova M.Y., Sushchik N.N., Gribovskaya I.V.
Заглавие : Experimental study of postwintering germination of akinetes and dormant cells of cyanoprocaryotes from bottom sediments of blooming and nonblooming ponds.
Место публикации : Doklady Biological Sciences. - 2002. - Vol. 383, Is. 1-6. - С. 131-132. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): fresh water--article--cyanobacterium--cytology--growth, development and aging--microbiology--physiology--season--cyanobacteria--fresh water--seasons--water microbiology
Scopus
Найти похожие

18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovskii A.Y., Zotina T.A.
Заглавие : Effect of salinity on the growth of the cyanobacterium Spirulina platensis in monoculture and mixed cultures
Место публикации : Microbiology: MAIK NAUKA/INTERPERIODICA, 1996. - Vol. 65, Is. 3. - С. 371-372. - 2. - ISSN 0026-2617
Примечания : Cited References: 5
Аннотация: The effect of NaCl concentrations on the growth of the cyanobacterium Spirulina platensis in monoculture and in mixed culture with the green halophilic alga Dunaliella salina was studied. The,growth rate of S. platensis in monoculture did not change within the salinity range from 1 to 20 g/l NaCl. With an increase in salinity, the growth rate declined, and, at 70 g/l NaCl, the cyanobacteria died. The response of S. platensis to changes in salinity in mixed culture with D. salina did not differ from that observed in monoculture. At a concentration of 50 g/l NaCl these species of microorganisms could coexist.
Найти похожие

19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kravchuk E.S., Gladyshev M.I., Ivanova E.A.
Заглавие : Dependence of the domination of Anabaena flos-aquae (Lyngb.) Breb. in the phytoplankton community on the initial abundance of akinetes
Место публикации : Doklady Biological Sciences. - 2007. - Vol. 416, Is. 1-6. - С. 377-378. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496607050158
Ключевые слова (''Своб.индексиров.''): anabaena flos-aquae--anabaena--animal--article--biological model--biomass--cyanobacterium--metabolism--microbiology--physiology--phytoplankton--russian federation--season--sediment--anabaena--animals--biomass--cyanobacteria--geologic sediments--models, biological--phytoplankton--russia--seasons--water microbiology
Scopus
Найти похожие

20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Makhutova O.N., Kalachova G.S., Kravchuk E.S., Ivanova E.A.
Заглавие : Associating particulate essential fatty acids of the ?3 family with phytoplankton species composition in a Siberian reservoir
Место публикации : Freshwater Biology. - 2004. - Vol. 49, Is. 9. - С. 1206-1219. - ISSN 00465070 (ISSN) , DOI 10.1111/j.1365-2427.2004.01263.x
Ключевые слова (''Своб.индексиров.''): cyanobacteria--diatoms--fatty acids--food quality--species composition--cyanobacterium--diatom--fatty acid--food quality--food web--growing season--phytoplankton--reservoir--eurasia--siberia--anabaena--anabaena flos-aquae--aphanizomenon--aphanizomenon flos-aquae--bacillariophyta--cyanobacteria--cyclotella--dinophyceae--flos--microcystis--microcystis aeruginosa--planktothrix--planktothrix agardhii--stephanodiscus
Аннотация: 1. We studied variation in the composition of fatty acids in the seston of a small freshwater reservoir with changes in phytoplankton composition during four growth seasons. We focused on the dynamics of the ?3 fatty acids because of their potential importance for zooplankton nutrition. 2. Total diatoms were related to the 20:5?3 fatty acid (eicosapentaenoic, EPA) content in seston. Among two dominant diatom genera, Cyclotella was not associated with EPA content. In contrast, there was a significant correlation between Stephanodiscus and the percentage contribution and content of EPA throughout the study. Hence, freshwater diatoms can differ strongly in content of the essential EPA. 3. We considered abundant cyanobacteria as a potential source of 18:3?3 fatty acid (linolenic, ALA) to aquatic food webs. Among four dominant cyanobacteria species, two (Anabaena flos-aquae and Planktothrix agardhii) showed significant correlation with the ALA content of the seston, while the other two (Aphanizomenon flos-aquae and Microcystis aeruginosa) did not. 4. Dinophyta had a relatively high level of 22:6?3 (docosahexaenoic, DHA) for freshwater species and can be also a source of EPA to aquatic food webs. 5. Our results show that various species of diatoms as well as cyanobacteria can be of contrasting nutritional value for zooplankton because of their different content of the essential PUFAs. Diatoms, which are low in EPA, could not be considered as a valuable food, while some field populations of cyanobacteria might be valuable sources of essential ALA.
Scopus
Найти похожие