Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
45
5
2009
Modern State of Zooplankton and Water Quality Assessment in the Selenga River
3-14
10.1615/HydrobJ.v45.i5.10
N. G.
Sheveleva
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russian Federation
I. V.
Arov
Limnological Institute, Siberian Department, Russian Academy of Sciences
Ye. A.
Misharina
Irkutsk State University, Irkutsk, Russia
the Selenga River
zooplankton
saprobity
Characteristics of zooplankton of the Selenga River, including its reaches (Orkhoy, Mongol People Republic) and the delta of the river, are given on the basis of long-term (1987−2008) expeditions and stationary investigations. Data on the species composition, on seasonal dynamics of the quantitative indices of Rotifera and Crustacea development, saprobic index, and the index of species diversity are presented. It has been found that in the upper and middle reaches of the river the qualitative and quantitative composition of zooplankton remained almost unchanged as compared to the 1960s. Changes conditioned by the influence of anthropic load were observed only in the lower reaches of the river. Analysis of the obtained results on the study of phytoplankton suggests that the water of the Selenga River is slightly contaminated.
Comparative Characteristics of Phytoepiphyton of Water Bodies of Kiev
15-23
10.1615/HydrobJ.v45.i5.20
G. V.
Kharchenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
T. F.
Shevchenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
P. D.
Klochenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
phytoepiphyton
phytoperiphyton
phytoplankton
water bodies of Kiev
the Dnieper reservoirs
Results of the comparative analysis of phytoepiphyton and phytoplankton of water bodies of Kiev and of phytoepiphyton and phytoperiphyton of the Dnieper reservoirs are presented. It has been found that phytoepiphyton of water bodies of Kiev is closely similar to phytoepiphyton of the Dnieper reservoirs. At the same time, it essentially differs from their phytoperiphyton and from phytoplankton of water bodies of Kiev. It has been found that both in phytoepiphyton of the studied water bodies of Kiev and in phytoepiphyton of the Dnieper reservoirs Streptophyta are among the leading divisions, families, and genera. In addition they are of considerable importance in the complex of dominant species.
Seasonal Dynamics of the Numbers and Biomass of Hydradephaga (Coleoptera) in Floodplain Ecosystems and Springs of the Northwestern Coast of the Black Sea
24-34
10.1615/HydrobJ.v45.i5.30
V. G.
Dyadichko
Odessa Branch, Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine, Odessa, Ukraine
Hydradephaga
numbers
biomass
springs
floodplain ecosystems
the northwestern coast of the Black Sea
Seasonal dynamics of the numbers and biomass of Hydradephaga (Coleoptera) of springs and some rivers of the northwestern coast of the Black Sea have been analyzed for the first time. It has been found that watercourses of various types (springs, small rivers, and large plain rivers) differ in seasonal dynamics of the quantitative indices of Hydradephaga development. The dominant taxa of Hydradephaga were revealed for each season and type of water bodies.
Morphology of Spermatophores of the Giant Octopus Enteroctopus dofleini apollyon (Incirrata, Octopodidae)
35-42
10.1615/HydrobJ.v45.i5.40
V. P.
Zalygalin
Kaliningrad Branch of the Russian University of Cooperation, Kaliningrad, Russia
octopus
spermatophores
spermatozoids
morphology
copulation
Structure of spermatophores of the sexually mature males of the giant octopus Enteroctopus dofleini apollyon (mantle length 280 mm) of the Bering Sea has been studied. Mature spermatophore consists of two sections: ejaculatory apparatus (tube and spindle-shaped body) and testicular cord. The ampoule and the rod-shaped body are consequently placed in the front section. The thin filament stretches out of this end. Release of the testicular cord is connected with the action of the releasing mechanism of the back section and abatement of the safety mechanism of the front section of the spermatophore, as well as with ejaculatory apparatus of the tube. Characteristics of the spermatophores of the subspecies E. d. apollyon and E. d. martini are given for comparison.
Basic Results of Investigation of the Bream (Abramis brama, Cyprinidae) Feeding in the Rybinsk Reservoir
43-52
10.1615/HydrobJ.v45.i5.50
T. S.
Zhiteneva
Institute of Biology of Inland Waters, Russian Academy of Sciences, Borok, Yaroslavl’ Region, Russia
bream
local fish schools
littoral
sublittoral
profundal
grey mud
feeding
feeding intensity
detritus
animal components
consumption index
filling index
biomass
the Rybinsk reservoir
the Volga River
Peculiarities of the bream of the Rybinsk reservoir feeding over all period of the reservoir existence have been analyzed. It was stated that since the reservoir was filled to its design level (in 1947 and 1970) feeding of all age groups of bream was poor. During the further period (1970−1985) Chironomidae and Oligochaeta became more important in the fish feeding. However significant differences in the animal components consumption between different local bream populations within certain pools were observed. Such differences are connected with natural factors and anthropogenic impact on the reservoir. Actual state of the bream's feeding has been assessed.
Peculiarities of the Distribution of Heavy Metals in the Organism of Fishes of Small Rivers of the Western Podolye
53-62
10.1615/HydrobJ.v45.i5.60
V. Ya.
Biyak
Ternopil Teachers' Training University
Ternopil, Ukraine
V. A.
Khomenchuk
Ternopil National Pedagogic University, Ternopil, Ukraine
V. Z.
Kurant
Ternopil Volodymyr Hnatiuk National Teachers-Training University
Ternopil, Ukraine
freshwater species of fishes
small rivers
iron
cobalt
manganese
zinc
copper
Results of the study of the content of heavy metals ions in the organism of some species of fishes of small rivers of the Western Podolye are given in the paper. The content of iron, cobalt, manganese, zinc, and copper was determined in the liver, muscles, and gills of Cyprinus carpio L., Carassius auratus L., Perca fluviatilis L., and Exox lucius L. The content of heavy metals ions in the organism of hydrobionts was investigated depending on the environmental conditions.
Peculiarities of Metallothioneines of the Bivalved Mollusk Anodonta cygnea L. in the Natural and Laboratory Living Conditions
63-71
10.1615/HydrobJ.v45.i5.70
O. B.
Stoliar
Ternopil Teachers Training Institute
Ternopil, Ukraine
O. V.
Mishchuk
Ternopil' State Pedagogical University, Ternopil', Ukraine
Anodonta cygnea
gills
metallothioneines
copper
zinc
cadmium
Effect of season and location of sampling of the freshwater bivalved mollusks Anodonta cygnea L. on the content and properties of metallothioneines in the gills has been investigated. Animals were sampled in spring, summer and autumn at two sites of the Gnyzna River: close to the autobus station (group A) and in the rural area (Group C), as well as after keeping in the laboratory during 21 day (group L). It was found that though content of the total zinc in the tissue was quite variable, content and ratio of zinc and copper in the metallothioneines, isomorphic composition and spectral peculiarities of the metallothioneines enabled to determine unfavorable effect of the environmental factors on the mollusks of the group A, especially in summer.
Communities of Parasites of the Invasive Fish Species of the Water Bodies of Ukraine: Forecast of Possible Changes
72-80
10.1615/HydrobJ.v45.i5.80
O. N.
Davydov
I. I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, Kiev, Ukraine
L. Ya.
Kurovskaya
Institute of Zoology National Academy of Sciences of Ukraine Kyiv, Ukraine
Yu. D.
Temnikhanov
Institute of Zoology, National Academy of Sciences of Ukraine, Kiev, Ukraine
R. V.
Butkov
Institute of Zoology, National Academy of Sciences of Ukraine, Kiev, Ukraine
G. P.
Volovik
Institute of Zoology, National Academy of Sciences of Ukraine, Kiev, Ukraine
parasites
invasive fish
water bodies of Ukraine
Paper deals with study of parasites of the invasive fish species of the water bodies of Ukraine. Consequences and perspectives of new fish species invasion, epizootic and epidemiological importance of their parasites are analyzed.
Component Communities of the Multicellular Parasites of Fishes of Lake Baikal
81-97
10.1615/HydrobJ.v45.i5.90
O. T.
Rusinek
The Baikal Museum, Siberian Branch of the Russian Academy of Ssciences, Listyanka, Russia
Ye. V.
Dzyuba
Limnological Institute Siberian Division of the Russian Academy of Sciences, Irkutsk, Russia
parasites of fishes
communities
generalists
specialists
Baikal
Component communities of parasites of 47 fish species and subspecies of Lake Baikal were studied. On the basis of values of the biological diversity indexes they were characterized as mature or immature component communities. Obtained results served as a basis for the communities' classification by combination of the specialists and generalists species (specialists and generalists species number, share of their specimens, dominant species). Based on these data all theoretically possible variants of the specialists and generalists species combinations for the mature and immature parasite communities were considered. It was stated that theoretically possible number of variants of the mature component communities is twice as much than immature. State of the parasite communities depending on the depth of fishes occurrence, their feeding type, systematic position and faunal complex has been assessed.
Modern State of the Dnieper (Zaporozhye) Reservoir in terms of Some Hydrochemical Indices
98-113
10.1615/HydrobJ.v45.i5.100
V. A.
Zhezherya
Institute of Hydrobiology
National Academy of Sciences of Ukraine
Kyiv, Ukraine
Ye. V.
Fedorenko
Dnepropetrovsk National University, Dnepropetrovsk, Ukraine
P.N.
Linnik
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
the Dnieper Reservoir
dissolved oxygen
ammonium
nitrite
nitrate
readily oxidized organic matter
Results of the study of the modern state of the Dnieper Reservoir in terms of some hydrochemical indices, including the content of dissolved oxygen, pH, and the content of inorganic forms of nitrogen and readily oxidized organic matter, are discussed in the paper. The concentration of oxygen dissolved in the water was characterized by low values both in summer and in autumn 2007. The same phenomenon was observed in winter. The studied section of the reservoir was characterized by a high content of ammonium, which was conditioned by its contamination by sewage, and also by possible migration of this compound from bottom sediments as a result of oxygen deficiency in the near bottom layer of water. A degree of contamination of the reservoir by readily oxidized organic matter was determined based on the values of permanganate oxidizability. At the same time, data on BOD5 inadequately reflect the degree of reservoir contamination by readily oxidized organic matter. It is likely that they are somewhat underestimated as a result of the toxic influence of pollutants on the vital activity of microorganisms.