Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
49
5
2013
Ecological and Biological Characteristics of Chrysophyta of Continental Water Bodies of Ukraine
3-11
10.1615/HydrobJ.v49.i5.10
O. S.
Gorbulin
V.N. Karazin Kharkov National University, Department of Botany, 4, Svobody Sq. ,61077 Kharkov, Ukraine
Chrysophyta
ecology
bioindication
saprobity
geography
continental water bodies
Ukraine
Results of analysis of original, literature, and archive data (1971−2010) on the ecology and geographic distribution of 81 taxa of Chrysophyta of continental water bodies of Ukraine are given in the paper. The ecological groups of algae
were distinguished in terms of water temperature, its salinity, pH, types of water bodies, saprobity, and geographic distribution.
Role of Phytoperiphyton in Organic Matter Production and Nitrogen Cycle in River Ecosystems (Review)
12-23
10.1615/HydrobJ.v49.i5.20
P. G.
Belyayeva
Institute of Ecology and Genetics of Microorganisms Ural Department Russian Academy of Sciences Perm, Russia
nitrogen fixation
denitrification
primary production
productivity
river ecosystems
phytoperiphyton
Data on the role of algae fouling (phytoperiphyton) in the productivity and biotic cycle of nitrogen in river ecosystems were generalized and analyzed. It has been shown that phytoperiphyton is of considerable importance in organic matter formation, especially in the rapid watercourses.
Catalase Activity of Microalgae in Culture
24-39
10.1615/HydrobJ.v49.i5.30
V. A.
Medved'
Institute of Hydrobiology National Academy of Sciences of Ukraine Kyiv, Ukraine
Z. N.
Gorbunova
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
catalase activity
biomass
algae
cultural filtrates
Paper deals with data on activity of catalase in 26 unialgal cultures of Chlorophyta, Cyanophyta, Bacillariophyta, Rhodophyta, Euglenophyta and Streptophyta. Activity of catalase in different cultures was established to vary
within wide range over their growth; amplitude and frequency of its oscillations was shown to be species-specific.
Diurnal Cyclicity of Pulmonary Respiration of the Freshwater Mollusks (Gastropoda, Pulmonata)
40-46
10.1615/HydrobJ.v49.i5.40
P.
Stadnichenko
Zhytomyr University, Zhytomyr, Ukraine
Lymnaea stagnalis
Planorbarius corneus
pulmonary
respiration
diurnal cyclicity
Peculiarities of diurnal cycles of the pulmonary respiration in two widely distributed and the biggest pulmonary mollusks Lymnaea stagnalis (Linnaeus, 1758) and Planorbarius corneus (Linnaeus, 1758) over the day/night rhythm were studied. Inspiration frequency and volume in the daytime were shown to be twice as much than in the night time, whereas intervals between inspirations
were longer.
Dynamic of Responses of Hydrilla verticillata to the Copper Ions Impact
47-55
10.1615/HydrobJ.v49.i5.50
V. N.
Nesterov
Institute of Ecology of the Volga Basin Russian Academy of Sciences Toliyatti, Russia
O. A.
Rozentsvet
Institute of Ecology of the Volga Basin Russian Academy of Sciences Toliyatti, Russia
O. N.
Makurina
Samara State University Samara, Russia
macrophytes
copper
lipids
enzymes
mechanisms of
antioxidant protection
Paper deals with response of Hydrilla verticillata to the copper ions impact. Content of the lipid peroxidation products, lipids, proteins and activity of the anti-oxidant protection enzymes (catalase, peroxidase, ascorbate oxidase and polyphenol oxidase) in tissues of H. verticillata changed depending on impact duration. Hydrilla verticillata was shown to possess wide spectre of adaptive
mechanisms at the cell level. Successive series of responses conditions adaptation of this species to the heavy metals' impact.
Experimental Studies on the Toxicity of Phenol to Crustacea (Review)
56-66
10.1615/HydrobJ.v49.i5.60
S. A.
Cherkashin
Pacific Scientific and Research Rishery Center Vladivostok, Russia
N. K.
Blinova
Pacific Research Fishery Center Vladivostok, Russia; Technological Institute of the East-Ukrainian National University Severodonetsk, Ukraine
phenol
Crustacea
survivorship
chemoreception
behavior
It has been shown that the values of the LC50 of phenol to various representatives of Crustacea (Branchiopoda, Ostracoda, Phyllopoda, Copepoda, and Malacostraca) vary over a wide range from 1 to 200 mg/L. Among estuarine and marine Crustacea, some species of the family Mysidae and Penaeus chinensis (Penaeidae) larvae proved to be the most sensitive organisms to the influence of phenol. The animals with the functionally mature sense of smell are capable to avoid sub-lethal solutions of phenol. At the same time, nontoxic
solutions of phenol can attract them. Within the specified range of toxic concentrations, the capability to avoid pollutants increases with increasing the duration of exposure. However, long-term contact or preliminary exposure can disrupt this capability. Sexually mature animals are characterized by the most effective capability to avoid phenol. Within a wide range of concentrations (0.001−1 mg/L), phenol can inhibit the impulse activity of the chemosensory neurons. At the acute concentrations of phenol (10−100 mg/L), the intensity of this property increases.
Impact of Hydrocarbons of the Water-soluble Fraction of Diesel Fuel on Early Development of the Sea Urchin Scaphechinus mirabilis
67-73
10.1615/HydrobJ.v49.i5.70
Ye. V.
Zhuravel'
Far-East Federal University Vladivostok, Russia
O. V.
Podgurskaya
Institute of Marine Biology Russian Academy of Sciences Vladivostok, Russia
oil hydrocarbons
diesel fuel
embryotest
toxicity
embryos
larvae
sea urchins
A high sensitivity of the sea urchin Scaphechinus mirabilis embryos and larvae to sodium dichromate was revealed. This fact allows to use them as test-objects in the bioassay of the marine water pollution. Impact of hydrocarbons of the diesel fuel water-soluble fraction on embryogenesis of S. mirabilis was assessed. The effective concentrations which cause disturbances in embryos and larvae were calculated. It was stated that actual state of the Peter the Great Bay pollution by petroleum hydrocarbons can potentially disturb reproduction of the sea urchins.
Impact of Water Pollution by Herbicides Zenkor and Roundup on Metabolism in Liver of Fishes of the Fam. Cyprinidae
74-80
10.1615/HydrobJ.v49.i5.80
O. B.
Mekhed
Chernigiv National Teacher'-Training University Chernigiv, Ukraine
A. A.
Zhydenko
Chernigiv National Pedagogical University Chernigiv, Ukraine
common carp
grass carp
silver carp
zenkor
roundup
enzymes
glucose
lipids
Paper deals with activity of some enzymes, content of glucose and total lipids in liver of the grass carp (Ctenopharyngodon idella Val.), common carp (Cyprinus carpio L.) and silver carp (Hypophthalmichthys molitrix Val.) under impact of herbicides zenkor and roundup.
Mechanisms of Forming of Seasonal Variations of 90Sr and 137Cs Content in the Freshwater Fishes
81-89
10.1615/HydrobJ.v49.i5.90
V. V.
Beliayev
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev
Ye. N.
Volkova
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev
freshwater fishes
90Sr
137Cs
seasonal variations
mathematical modeling
Mechanisms of seasonal changes of 90Sr and 137Cs content in body of the freshwater fishes were studied by the methods of mathematical modeling. The maximum range of the seasonal variations of 90Sr in fishes was found to be equal to 17% of the annual mean, 137Cs − 50%.
Humus Substances of Surface Waters and the Peculiarities of Their Distribution among Various Fractions
90-111
10.1615/HydrobJ.v49.i5.100
P.N.
Linnik
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
Ya. S.
Ivanechko
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
R. P.
Linnik
Kiev National University Kiev, Ukraine
V. A.
Zhezherya
Institute of Hydrobiology
National Academy of Sciences of Ukraine
Kyiv, Ukraine
humus substances
humic acids
fulvic acids
rivers
reservoirs
lakes
molecular-mass distribution
average molecular mass
Results of the study of humus substances in water bodies of various types, including rivers, lakes, and reservoirs, are given in the paper. It has been shown that their maximum concentrations are registered in the rivers of the Pripyat
River basin. In the studied water bodies, a relative contribution of humus acids to the total content of dissolved organic matter (% Corg) on the average accounts for 56.0−82.4%. The fraction of fulvic acids (81−95%) prevails in the composition of humus substances. Data on the molecular-mass distribution and relationship between the fractions of humus substances differing in their molecular mass depending on the method of their detection are discussed. The values of the average-number and average-mass molecular mass of humus substances, including the fractions of humic and fulvic acids, have been calculated. It has been shown that their average-mass molecular mass accounts for 2.3−12.2, 6.9−12.2, and 1.8−9.0 kDa.