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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lopatina T.S., Zadereev E.S.
Заглавие : Assessment of the Volatility and Thermal Stability of Chemicals that Stimulate Females of Moina macrocopa (Cladocera) to Produce Diapausing Eggs
Колич.характеристики :6 с
Место публикации : Russ. J. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2015. - Vol. 46, Is. 1. - С. 103-108. - ISSN 1067-4136, DOI 10.1134/S1067413615010105. - ISSN 1608-3334(eISSN)
Примечания : Cited References:25
Предметные рубрики: SEXUAL REPRODUCTION
INDUCTION
DAPHNIA
METABOLITES
CRUSTACEA
Ключевые слова (''Своб.индексиров.''): cladocerans--diapause--chemical communication--chemical cues
Аннотация: The volatility and thermal stability of chemicals that are contained in the metabolic products of Moina macrocopa females that stimulate the production of diapausing eggs in these females have been studied in experiments with separately cultivated individuals. It has been shown that the gametogenesis-stimulating chemicals in this species are nonvolatile compounds: the effect of the medium that contains the metabolic products of the organism was not decreased after many hours of blowing with argon. Prolonged heating up to 80 degrees C also did not deactivate the ability of these products to change the reproductive mode. The effect of the medium that contains these products decreased after boiling, but if the possibilities of their oxidation or binding with salts of metals were excluded, they retained the ability to change the reproductive mode of the animals even after boiling.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirova N., Ushakova S., Kalacheva G., Tikhomirov A.
Заглавие : Characteristics of mineral nutrition of plants in the bio-technical life support system with human wastes included in mass exchange
Место публикации : Acta Astronaut. - 2016. - Vol. 126. - С. 59-65. - ISSN 00945765 (ISSN) , DOI 10.1016/j.actaastro.2016.04.020
Ключевые слова (''Своб.индексиров.''): bio-technical life support system--human wastes--ion-exchange substrate--wheat--grain growth--nutrients--nutrition--substrates--human waste--ion exchange substrates--liquid products--mineral nutrition--nutrient solution--reproductive organs--vegetative organs--wheat--ion exchange
Аннотация: The study addresses the effectiveness of using ion exchange substrates (IES) to optimize mineral nutrition of plants grown in the nutrient solutions containing oxidized human wastes for application in bio-technical life support systems. The study shows that the addition of IES to the root-inhabited substrate is favorable for the growth of wheat vegetative organs but causes a decrease in the grain yield. By contrast, the addition of IES to the nutrient solution does not influence the growth of vegetative organs but favors normal development of wheat reproductive organs. Thus, to choose the proper method of adjusting the solution with IES, one should take into account specific parameters of plant growth and development and the possibility of multiple recycling of IES based on the liquid products of mineralization of human wastes. © 2016 IAA. Published by Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E., Lopatina T., Oskina N., Zotina T., Petrichenkov M., Dementyev D.
Заглавие : Gamma irradiation of resting eggs of Moina macrocopa affects individual and population performance of hatchlings
Место публикации : J. Environ. Radioact.: Elsevier Ltd, 2017. - Vol. 175-176. - С. 126-134. - ISSN 0265931X (ISSN) , DOI 10.1016/j.jenvrad.2017.05.002
Ключевые слова (''Своб.индексиров.''): cladocera--life cycle parameters--population performance--resting eggs--?-radiation--gamma rays--irradiation--life cycle--radiation effects--radioactive materials--sediments--cladocera--cycle parameters--dose response relationships--population performance--reproductive rates--resting eggs--sensitive parameter--zooplankton communities--radiation--adolescent--cladocera--contamination--controlled study--dose response--female--gamma irradiation--gamma radiation--hatchling--human--human experiment--life cycle--moina macrocopa--newborn--nonhuman--sediment--zooplankton--animalia--cladocera--moina macrocopa
Аннотация: We investigated the effects of ?-radiation on the survival of resting eggs of the cladoceran Moina macrocopa, on the parameters of the life cycle of neonates hatched from the irradiated eggs and on the performance of the population initiated from irradiated eggs. The study showed that ?-radiation in a range of doses from the background level to 100 Gy had no effect on survival of irradiated eggs. The absorbed dose of 200 Gy was lethal to resting eggs of M. macrocopa. The number of clutches and net reproductive rate (R0) of hatchlings from eggs exposed to radiation were the strongly affected parameters in experiments with individual females. The number of clutches per female was drastically reduced for females hatched from egg exposed to 80–100 Gy. The most sensitive parameter was the R0. The estimated ED50 for the R0 (effective dose that induces 50% R0 reduction) was 50 Gy. Population performance was also affected by the irradiation of the resting stage of animals that initiated population. Populations that was initiated from hatchlings from resting eggs exposed to 100 Gy was of smaller size and with fewer juvenile and parthenogenetic females in comparison with control populations. Thus, we determined the dose-response relationship for the effect of gamma radiation on survival of resting eggs and individual and population responses of hatchlings from irradiated resting eggs. We conclude that for highly polluted areas contamination of bottom sediments with radioactive materials could affect zooplankton communities through adverse chronic effects on resting eggs, which will be transmitted to hatchlings at individual or population levels. © 2017 Elsevier Ltd
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Temerova T.A., Tolomeyev A.P., Degermendzhy A.G.
Заглавие : Growth of dominant zooplankton species feeding on plankton microflora in Lake Shira
Место публикации : Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - С. 235-243. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1015607304508
Ключевые слова (''Своб.индексиров.''): arctodiaptomus salinus--brachionus plicatilis--life history--reproduction--specific growth rate--diet--food limitation--growth rate--life history--reproduction--saline lake--zooplankton--russian federation--algae--arctodiaptomus--bacteria (microorganisms)--brachionus--brachionus plicatilis--calanoida--copepoda--cyanobacteria--invertebrata--rotifera
Аннотация: Batch cultures and continuous flow cultures were used to study the growth rates of zooplankton species from Shira lake, the rotifer Brachionus plicatilis Muller and calanoid copepod Arctodiaptomus salinus Daday, which were fed on phytoplankton and bacterioplankton from the lake. Analyses of the birth and survival rates were used to demonstrate that the lake phytoplankton, consisting mostly of cyanobacteria and diatomaceous algae, is inadequotes for optimal realisation of the reproductive potential of B. plicatilis when compared with the bacterial diet. The study revealed that the kinetic growth characteristics of the two zooplankters were similar: B. plicatilis rmax, 0.120 d-1; S0, 0.253; and Ks, 0.114 mg dry mass l-1; and for A. salinus rmax, 0.129 d-1; S0, 0.240; and Ks, 0.171 mg dry mass l-1. Fluctuations in natural food concentration reduced the growth rate of both species. Even though the threshold concentration of food for B. plicatilis and A. salinus were quite similar, the copepods were less sensitive to food limitation.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Prokopkin I.G., Gubanov V.G., Gubanov M.V.
Заглавие : Individual-based model of the reproduction cycle of Moina macrocopa (Crustacea : Cladocera)
Колич.характеристики :17 с
Место публикации : Ecol. Model.: ELSEVIER SCIENCE BV, 2003. - Vol. 162, Is. 01.02.2013. - P15-31. - ISSN 0304-3800, DOI 10.1016/S0304-3800(02)00348-4
Примечания : Cited References: 25
Предметные рубрики: POPULATION
ZOOPLANKTON
FEMALES
WATER
Ключевые слова (''Своб.индексиров.''): individual-based model--cladocera--change of reproduction mode--metabolic by-products
Аннотация: An individual-based model of cyclic development of Cladocera populations was developed on the basis of experimental data. The model takes into account the following processes describing the development of an individual animal: maturation, transition into other reproductive classes, selection of the reproduction mode (parthenogenetic or gamogenetic), release of parthenogenetic progeny and death. The model assumes that switching from asexual to sexual reproduction is controlled by the concentration of food and metabolic by-products of the animal population. Verification of the model by independent experiments demonstrated that (1) during population growth, metabolic by-products build up in the medium, and (2) the effect of metabolic by-products on gamogenesis induction depends on concentration. The hypothesis that the effect of regulating reproductive switching factors should synchronise the development of population with the change of environmental conditions in order to ensure production of the maximum number of diapausing eggs was tested. It is shown that combination of regulating reproductive switching factors maximises the production of diapausing eggs. (C) 2002 Elsevier Science B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Prokopkin I.G., Gubanov V.G., Gubanov M.V.
Заглавие : Individual-based model of the reproduction cycle of Moina macrocopa (Crustacea: Cladocera)
Место публикации : Ecological Modelling. - 2003. - Vol. 162, Is. 1-2. - С. 15-31. - ISSN 03043800 (ISSN) , DOI 10.1016/S0304-3800(02)00348-4
Ключевые слова (''Своб.индексиров.''): change of reproduction mode--cladocera--individual-based model--metabolic by-products--ecological modeling--individual-based model--reproductive cycle--animalia--cladocera--crustacea--moina macrocopa
Аннотация: An individual-based model of cyclic development of Cladocera populations was developed on the basis of experimental data. The model takes into account the following processes describing the development of an individual animal: maturation, transition into other reproductive classes, selection of the reproduction mode (parthenogenetic or gamogenetic), release of parthenogenetic progeny and death. The model assumes that switching from asexual to sexual reproduction is controlled by the concentration of food and metabolic by-products of the animal population. Verification of the model by independent experiments demonstrated that (1) during population growth, metabolic by-products build up in the medium, and (2) the effect of metabolic by-products on gamogenesis induction depends on concentration. The hypothesis that the effect of regulating reproductive switching factors should synchronise the development of population with the change of environmental conditions in order to ensure production of the maximum number of diapausing eggs was tested. It is shown that combination of regulating reproductive switching factors maximises the production of diapausing eggs. В© 2002 Elsevier Science B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Dubovskaya O.P., Makhutova O.N., Kalachova G.S.
Заглавие : Influence of sestonic elemental and essential fatty acid contents in a eutrophic reservoir in Siberia on population growth of Daphnia (longispina group)
Место публикации : Journal of Plankton Research. - 2006. - Vol. 28, Is. 10. - С. 907-917. - ISSN 01427873 (ISSN) , DOI 10.1093/plankt/fbl028
Ключевые слова (''Своб.индексиров.''): eutrophic environment--fatty acid--multiple regression--particulate organic nitrogen--plankton--population growth--reservoir--seston--eurasia--siberia--daphnia
Аннотация: Dependence of specific integral population growth rate or specific production rate of populations with random size and age structure on elemental and essential fatty acid composition of natural seston was studied in a laboratory flow-through system using a multiple regression. Under a comparatively high content of particulate phosphorus (P), the best single predictor of the growth appeared to be content of eicosapentaenoic acid (EPA, 20:5?3), as it was found earlier for somatic growth of even-aged populations of Daphnia. Regression equation with two independent variables, EPA and particulate nitrogen (N), gave a significantly better fit for the population growth as the dependent variable than the equation with EPA as the single independent variable. Interestingly, there was no significant correlation between N as the single variable and the growth. The essential ?3 fatty acid and N appeared to be complementary indicators of the food quality, which probably limited different constituents (reproductive and somatic) of the integral population growth under the high content of particulate P. В© The Author 2006. Published by Oxford University Press. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya O.P., Gladyshev M.I., Makhutova O.N.
Заглавие : Limnetic zooplankton passing through a high-head dam and their fate in a river with high current velocity (Case of the Krasnoyarsk hydroelectric power station on the Yenisey river)
Место публикации : Zhurnal Obshchei Biologii. - 2004. - Vol. 65, Is. 1. - С. 92-93. - ISSN 00444596 (ISSN)
Ключевые слова (''Своб.индексиров.''): copepoda--heterocope
Аннотация: The vertical distribution of net zooplankton in head-water of Krasnoyarsk hydroelectric power station and its horizontal distribution in the tail-water were studied during two years in winter and summer seasons. In order to distinguish living and dead individuals the special staining was used. It was revealed that on average 77% of living plankton pass through high-head dam with deep water scoop to the tailwater. While passing through dam aggregates some individuals of the reservoir plankton are traumatized and die, that results in some increase of portion of dead individuals in the tail water near dam (from 3 to 6%). Alive zooplankton passed through the dam aggregates is eliminated under the Upper Yenisey highly turbulent conditions. There is approximately 10% of it in 32 km from the dam if compare with biomass in 20-40 m layer of reservoir, the portion of dead increases to 11%. The biomass of zooplankton suspended in the water column of the tail-water sometimes increases (till > 1 g/m3) due to large Copepoda Heterocope borealis, which inhabits near-bottom and near-shore river zones and can be found in the central part of the river during reproductive period. Limnetic zooplankton from the reservoir cannot be considered as important food for planktivores in the tail-water.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaia O.P., Gladyshev M.I., Makhutova O.N.
Заглавие : Limnetic zooplankton run-off a high-head dam and their fate in a river with high current velocity (case of the Krasnoiarsk hydroelectric power station on the Yenisei river
Место публикации : Zhurnal obshchei biologii. - 2004. - Vol. 65, Is. 1. - С. 81-93. - ISSN 00444596 (ISSN)
Ключевые слова (''Своб.индексиров.''): fresh water--animal--article--biomass--electric power plant--physiology--russian federation--season--zooplankton--animals--biomass--fresh water--power plants--seasons--siberia--zooplankton
Аннотация: The vertical distribution of net zooplankton in head-water of Krasnoyarsk hydroelectric power station and its horizontal distribution in the tail-water were studied during two years in winter and summer seasons. In order to distinguish living and dead individuals the special staining was used. It was revealed that on average 77% of living plankton pass through high-head dam with deep water scoop to the tailwater. While passing through dam aggregates some individuals of the reservoir plankton are traumatized and die, that results in some increase of portion of dead individuals in the tail water near dam (from 3 to 6%). Alive zooplankton passed through the dam aggregates is eliminated under the Upper Yenisei highly turbulent conditions. There is approximately 10% of it in 32 km from the dam if compare with biomass in 20-40 m layer of reservoir, the portion of dead increases to 11%. The biomass of zooplankton suspended in the water column of the tail-water sometimes increases (till 1 g/m3) due to large Copepoda Heteroscope borealis, which inhabits near-bottom and near-shore river zones and can be found in the central part of the river during reproductive period. Limnetic zooplankton from the reservoir cannot be considered as important food for planktivores in the tail-water.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya O.P., Gladyshev M.I., Makhutova O.N.
Заглавие : Linmetic zooplankton passing through a high-head dam and their fate in a river with high current velocity (case of the Krasnoyarsk Hydroelectric Power Station on the Yenisey River)
Колич.характеристики :13 с
Место публикации : Zhurnal Obshchei Biol.: MEZHDUNARODNAYA KNIGA, 2004. - Vol. 65, Is. 1. - P81-93. - ISSN 0044-4596
Примечания : Cited References: 15
Предметные рубрики: MORTALITY
Аннотация: The vertical distribution of net zooplankton in head-water of Krasnoyarsk hydroelectric power station and its horizontal distribution in the tail-water were studied during two years in winter and summer seasons. In order to distinguish living and dead individuals the special staining was used. It was revealed that on average 77% of living plankton pass through high-head dam with deep water scoop to the tailwater. While passing through dam aggregates some individuals of the reservoir plankton are traumatized and die, that results in some increase of portion of dead individuals in the tail water near dam (from 3 to 6%). Alive zooplankton passed through the darn aggregates is eliminated under the Upper Yenisey highly turbulent conditions. There is approximately 10% of it in 32 km from the dam if compare with biomass in 20-40 m layer of reservoir; the portion of dead increases to I M. The biomass of zooplankton suspended in the water column of the tail-water sometimes increases (till 1 g/m(3)) due to large Copepoda Heterocope borealis, which inhabits near-bottom and near-shore river zones and can be found in the central part of the river during reproductive period. Limnetic zooplankton from the reservoir cannot be considered as important food for planktivores in the tail-water.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev Y.S.
Заглавие : Maternal effects, conspecific chemical cues, and switching from parthenogenesis to gametogenesis in the cladoceran Moina macrocopa
Колич.характеристики :6 с
Место публикации : Aquat. Ecol.: KLUWER ACADEMIC PUBL, 2003. - Vol. 37, Is. 3. - P251-255. - ISSN 1386-2588, DOI 10.1023/A:1025850417717
Примечания : Cited References: 19
Предметные рубрики: POPULATION-DENSITY
DAPHNIA-MAGNA
CRUSTACEA
REPRODUCTION
DIAPAUSE
Ключевые слова (''Своб.индексиров.''): adaptation--cladocera--chemical signals--gametogenesis induction--maternal control
Аннотация: The change in reproductive mode from parthenogenesis to gametogenesis in Cladocera is controlled by multiple environmental cues. Maternal effects are involved in the control of reproductive switching. In this study, we estimated the readiness of Moina macrocopa females to change reproduction mode under the effect of conspecific chemicals on maternal and offspring generations. The results demonstrated that information about the chemical environment was not transmitted between generations (none of the females produced diapausing eggs in the control medium irrespective of their mothers' environment). Differences in maternal energetic investments were not significant, hence the maternal environment did not affect the fecundity. However, tested animals adapted to the effect of the diapause inducing factor. When offspring of mothers cultured in crowded water were also cultured in crowded water (the constant effect of conspecific chemicals), they switched less readily to gametogenesis than offsprings of mothers cultured in fresh medium.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev Y.S.
Заглавие : Maternal effects, conspecific chemical cues, and switching from parthenogenesis to gametogenesis in the cladoceran Moina macrocopa
Место публикации : Aquatic Ecology. - 2003. - Vol. 37, Is. 3. - С. 251-255. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1025850417717
Ключевые слова (''Своб.индексиров.''): adaptation--chemical signals--cladocera--gametogenesis induction--maternal control--chemical cue--gametogenesis--maternal effect--parthenogenesis--reproductive strategy--animalia--cladocera--invertebrata--moina--moina macrocopa
Аннотация: The change in reproductive mode from parthenogenesis to gametogenesis in Cladocera is controlled by multiple environmental cues. Maternal effects are involved in the control of reproductive switching. In this study, we estimated the readiness of Moina macrocopa females to change reproduction mode under the effect of conspecific chemicals on maternal and offspring generations. The results demonstrated that information about the chemical environment was not transmitted between generations (none of the females produced diapausing eggs in the control medium irrespective of their mothers' environment). Differences in maternal energetic investments were not significant, hence the maternal environment did not affect the fecundity. However, tested animals adapted to the effect of the diapause inducing factor. When offspring of mothers cultured in crowded water were also cultured in crowded water (the constant effect of conspecific chemicals), they switched less readily to gametogenesis than offsprings of mothers cultured in fresh medium.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Artamonova V. S., Kolmakova O. V., Kirillova E. A., Makhrov A. A.
Заглавие : Phylogeny of Salmonoid Fishes (Salmonoidei) Based on mtDNA COI Gene Sequences (Barcoding)
Колич.характеристики :15 с
Коллективы : Russian Science Foundation [16-14-10001]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2018. - Vol. 11, Is. 3. - С. 271-285. - ISSN 1995-4255, DOI 10.1134/S1995425518030022. - ISSN 1995-4263(eISSN)
Примечания : Cited References:102. - We are very grateful to colleagues who helped collect samples: E.G. Berestovskii, I.N. Bolotov, E.A. Borovikova, I.V. Vikhrev, L.A. Glushchenko, V.V. Ignatenko, D.P. Karabanov, A.P. Novoselov, V.M. Spitsyn, V.A. Shirokov, and I.L. Shchurov; employees of Trout Hatchery "Adler", the Federal Breeding and Genetic Center for Fish Culture, and Vygsky and Kemsky fish hatcheries; and residents of Barabash-Levada, Len-lu, and Chupa settlements. We also thank S.S. Alekseev for identifying sharp-snouted and blunt-snouted lenoks. This work was supported by the Russian Science Foundation, project no. 16-14-10001.
Предметные рубрики: MOLECULAR DATING ANALYSIS
GROWTH-HORMONE INTRONS
SALMONIFORMES
Ключевые слова (''Своб.индексиров.''): evolution--network--molecular clock--amino acid sequence--reproductive--isolation--immobilization--fishes
Аннотация: We have analyzed the partial sequences of the mitochondrial COI gene along with the amino acid sequences of cytochrome oxidase subunit I, encoded by this gene region, in representatives of 11 genera of salmonoid fish. For amino acid sequences, two alternative networks are constructed with outgroups represented by either Esocoidei or Osmeroidei as the supposed ancestral groups. This way, Osmeroidei appear to be closer to the salmonoid fish than Esocoidei, and their presence in the network as an outgroup explains the available data on the morphology and karyology of salmonoids much better. A number of the results of this study are fundamentally new. In particular, the slowing down of the molecular evolution of the grayling (Thymallidae) is shown. We conclude that the charr (Salvelinus) is one of the modern genera of salmonoids closest to their ancestor. The hypothesis of the phylogenetic proximity of the genera Brachymystax, Hucho, and Salmo has been confirmed. We also discuss the possibility that it is namely the changes in the amino acid sequence of cytochrome oxidase subunit I that lead to postzygotic reproductive isolation between taxa.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Arashkevich E.G., Anokhina L.L., Vostokov S.V., Dritz A.V., Lukasheva T.A., Luppova N.E., Musaeva E.I., Tolomeev A.N.
Заглавие : Reproductive strategy of Beroe ovata (Ctenophora, Atentaculata, Beroida) - A new invader in the Black Sea
Колич.характеристики :5 с
Место публикации : Oceanology: INTERPERIODICA, 2001. - Vol. 41, Is. 1. - P111-115. - ISSN 0001-4370
Примечания : Cited References: 18
Аннотация: Factors affecting the egg production of Beroe ovata were experimentally studied. Ctenophore clutch size increased with animal size and ranged from 40 eggs for small specimens to 5000-7000 eggs for individuals 80-120 mm long. The beginning of maturation was recorded for the ctenophores bigger than 30-35 mm. Clutch size was directly influenced by the amount of ingested food. Starving animals produced no eggs. No influence of temperature on the dutch size was indicated within the range 15-22 degreesC. Possible factors affecting the eggs viability which varied in the experiments from 20 to 80% are discussed. In the autumn of 1999, the spawning period was observed in September-October with a maximum at the beginning of October. Concentration of the larvae in the near-shore zone amounted to more than 400 ind. m(-2). Offshore, their amount decreased and in the central part of the sea they were not found.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Kalachova G.S.
Заглавие : Seasonal dynamics of fatty acid content of a common food fish from the Yenisei river, Siberian grayling, Thymallus arcticus
Место публикации : Food Chemistry. - 2007. - Vol. 104, Is. 4. - С. 1353-1358. - ISSN 03088146 (ISSN) , DOI 10.1016/j.foodchem.2007.01.050
Ключевые слова (''Своб.индексиров.''): essential polyunsaturated fatty acids--grayling--seasonal dynamics--docosahexaenoic acid--fatty acid--icosapentaenoic acid--polyunsaturated fatty acid--article--bioaccumulation--molecular dynamics--muscle--quantitative analysis--russian federation--water temperature--thymallus arcticus
Аннотация: Seasonal variations of fatty acid contents in muscle tissue of one of the main food fish species in Siberian rivers, grayling, Thymallus arcticus, were studied over 3 years. Under a comparatively low range of water temperature variations, spawning appeared to be the main cause of seasonal changes in contents of quantitatively prominent and essential fatty acids in fish filets. In general, fish accumulated essential polyunsaturated fatty acids (PUFA), such as eicosapentaenoic (EPA) and docosahexaenoic (DHA), in their muscle tissue before reproductive seasons and then the PUFA seemed to be transferred into gonads during their formation. Hard roe of Siberian grayling had 3-4 times higher PUFA contents, than had that of the muscle tissue. The fish species, T. arcticus, was found to be a valuable source of the essential PUFA, including EPA and DHA, for human diet. В© 2007 Elsevier Ltd. All rights reserved.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E. S., Lopatina T. S., Zotina T. A., Oskina N. A., Dementyev D. V., Petrichenkov M. V.
Заглавие : The effect of gamma-radiation on resting eggs and life cycle of cladoceran Moina macrocopa
Колич.характеристики :5 с
Коллективы : Russian Science Foundation [14-14-00076]
Место публикации : Dokl. Biochem. Biophys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2016. - Vol. 466, Is. 1. - С. 61-65. - ISSN 1607-6729, DOI 10.1134/S1607672916010166. - ISSN 1608-3091(eISSN)
Примечания : Cited References:11. - This study was supported by the Russian Science Foundation (project no. 14-14-00076).
Предметные рубрики: DAPHNIA-MAGNA
Аннотация: We investigated the effects of gamma-irradiation on the survival of resting eggs of the cladoceran Moina macrocopa and on the parameters of the life cycle of neonates hatched from the irradiated eggs. It was shown that gamma-irradiation in a wide range of doses (from the background level to 100 Gy) had no effect on survival of eggs and mortality of neonates hatched from the irradiated eggs. However, exceeding the absorbed dose of 40 Gy sharply decreased the reproductive potential of the neonates hatched from irradiated eggs.
WOS,
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Gubanov V.G., Egorov I.V.
Заглавие : The influence of food concentration and "water aggregation" on the reproductive parameters of Moina macrocopa (Crustacea : Cladocera) females
Колич.характеристики :13 с
Место публикации : Zhurnal Obshchei Biol.: MEZHDUNARODNAYA KNIGA, 1998. - Vol. 59, Is. 1. - P45-57. - ISSN 0044-4596
Примечания : Cited References: 27
Предметные рубрики: DAPHNIA-MAGNA
EGG SIZE
DENSITY
POPULATION
INDUCTION
PULEX
Аннотация: Combined influence of "water of aggregation" and food concentration on the reproductive parameters of Moina macrocopa females was investigated. In all experiments the influence of population density was associated with the effect of "water of aggregation" prepared earlier by keeping dense population (200 mu g/ml) of M. macrocopa. It was shown that life-span of M. macrocopa females in "water of aggregation" was not dependent on food concentration; under conditions of all tested food concentration it was less than in case of control clean water. There was no difference in proportion of males produced in "water of aggregation" and in control though more males were born under conditions of higher food concentration. In general "water of aggregation" causes a specific acceleration of female life history: the life-span and the period between clutches decrease, the amount of neonates in last clutches increases while the chance of male production at the beginning of reproduction period becames greater. The "water of aggregation" could also causes the formation of ephipial eggs instead of the first partenogenetic clutch. It seems that life strategy under conditions of very high mortality associated with "water of aggregation" is aimed to maximum realization of individual capacities in short period of time.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Gubanov V.G., Egorov I.V.
Заглавие : The influence of food concentration and "water of aggregation" on the reproductive parameters of Moina macrocopa (Crustacea: Cladocera) females
Место публикации : Zhurnal Obshchei Biologii. - 1998. - Vol. 59, Is. 1. - С. 55-57. - ISSN 00444596 (ISSN)
Аннотация: Combined influence of "water of aggregation" and food concentration on the reproductive parameters of Moina macrocopa females was investigated. In all experiments the influence of population density was associated with the effect of "water of aggregation" prepared earlier by keeping dense population (200 ?g/ml) of M. macrocopa. It was shown that life-span of M. macrocopa females in "water of aggregation" was not dependent on food concentration; under conditions of all tested food concentration it was less than in case of control clean water. There was no difference in proportion of males produced in "water of aggregation" and in control though more males were born under conditions of higher food concentration. In general "water of aggregation" causes a specific acceleration of female life history: the life-span and the period between clutches decrease, the amount of neonates in last clutches increases while the chance of male production at the beginning of reproduction period becames greater. The "water of aggregation" could also causes the formation of ephipial eggs instead of the first partenogenetic clutch. It seems that life strategy under conditions of very high mortality associated with "water of aggregation" is aimed to maximum realization of individual capacities in short period of time.
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19.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Tikhomirov A.A., Ushakova S.A., Shikhov V.N., Gros J.-B., Golovko T.K., Dal'Ke I.V., Zakhozhii I.G.
Заглавие : Tolerance of plants grown on human mineralized waste to changes in air temperature
Место публикации : International Astronautical Federation - 59th International Astronautical Congress 2008, IAC 2008. - 2008. - Vol. 1: 59th International Astronautical Congress 2008, IAC 2008 (29 September 2008 through 3 October 2008, Glasgow) Conference code: 79748. - С. 311-320
Ключевые слова (''Своб.индексиров.''): air temperature--alternating electromagnetic field--biological life support systems--closedness--controlled process--fluorescence measurements--gas exchange--heat stress--high temperature--human waste--nutrient solution--old plants--photosynthetic apparatus--photosynthetically active radiation--plant components--plant growth--plant wastes--protective action--reproductive organs--temperature changes--temperature conditions--atmospheric temperature--electromagnetic field effects--electromagnetic fields--gas plants--heat resistance--hydrogen peroxide--oxygen supply--plant life extension--productivity--specific heat--thermal stress--waste utilization--plant shutdowns
Аннотация: The main objective of an LSS is to supply a crew with food, water and oxygen, and to eliminate its waste. The ultimate goal is to achieve the highest degree of closure of the system using controlled processes offering a high level of reliability and flexibility. Enhancement of closedness of biological life support systems (BLSS) including plants relies on increased regeneration of gas, water and plant waste, and utilization of solid and liquid human wastes. Clearly, the robustness of an LSS subjected to stress will be substantially determined by the robustness of the plant components of the phototrophic unit. The aim of the present work was to estimate the heat resistance of plants grown on human wastes. Human exometabolites mineralized by hydrogen peroxide in an alternating electromagnetic field were used to make a nutrient solution for the plants. We looked for a possible increase in the heat resistance of the plants using changes in photosynthetically active radiation (PAR) intensity during heat stress. At ages 15 and 25 days, plants were subjected to a rise in air temperature (from 22-24В°C to 44В°C) under different PAR intensities for 4 hours. The status of the photosynthetic apparatus of the plants was assessed by external CO2 gas exchange and fluorescence measurements. The increased irradiance of the plants during the high temperature period demonstrated its protective action for both the photosynthetic apparatus of the leaves and subsequent plant growth and development. The productivity of the plants subjected to temperature changes at 250 W/m2 of PAR did not differ from that of controls, whereas the productivity of the plants subjected to the same heat stress but in darkness was halved. The heat resistance of the reproductive organs of 25-day-old plants was significantly lower than that of 15-day-old plants subjected to similar light and temperature conditions.
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