Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
52
3
2016
Phytomicrobenthos Dynamics in Water Bodies of Various Types in the Kiliya Delta of the Danube River Depending on Some Ecological Factors
3-14
10.1615/HydrobJ.v52.i3.10
V. I.
Shcherbak
Institute of Hydrobiology, National Academy of Sciences of Ukraine, 12 Prosp. Geroev Stalingrada, Kyiv 04210, Ukraine
E. Sh.
Koziychuk
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
phytomicrobenthos
the Kiliya Delta of the Danube River
water salinity
bottom sediments
water velocity
dominant complex
The influence of some ecological factors (salinity, type of bottom sediments, and water velocity) on phytomicrobenthos dynamics in water bodies of various types in the Kiliya Delta of the Danube River was analyzed. It has been found that the response of benthic microalgae to changes in ecological conditions consists in the transformation of structural and functional organization of their communities, which manifests itself in the increase or decrease in the indices of species diversity, numbers and biomass, and also in changes in the complex of dominant species.
Seasonal Variability of Sexes Ratio and Reproductive Cycle in Idotea balthica basteri (Crustacea: Isopoda) in the Periphytic Community of the Odessa Bay of the Black Sea
15-21
10.1615/HydrobJ.v52.i3.20
A. Yu.
Varigin
Institute of Marine Biology National Academy of Sciences of Ukraine Odessa, Ukraine
Idotea balthica basteri
sexual ratio
reproductive cycle
fertility
periphytic community
the Odessa Bay.
The seasonal variability of the sex composition of the Idotea balthica basteri (Pallas, 1772) population in the periphytic community of the Odessa Bay (the Black Sea) was studied. The annual variability of males and females ratio was revealed. It was noted that I. balthica basteri reproduces continuously all year round, but the most intensively in spring. Data on fertility of this species in periphytic community of the Odessa Bay was determined. The relationship of this parameter with length and weight was shown. The equations of dependence of wet and dry mass of males, egg-bearing and not-egg-bearing females on their length were presented.
Phytoepiphyton of the Additional Net of the Kanev Reservoir
22-37
10.1615/HydrobJ.v52.i3.30
P. D.
Klochenko
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
O. S.
Tarashchuk
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
epiphytic algae
species composition
taxonomic structure
numbers
biomass
higher aquatic plants
ecological groups
additional net of the Kanev Reservoir.
Data on the species composition, taxonomic structure, and quantitative indices of epiphytic algae development, and also on the peculiarities of their distribution on higher aquatic plants of various ecological groups occurring in the additional net of the Kanev Reservoir, have been generalized for the first time. A total of 216 species of algae represented by 224 infraspecific taxa, including those containing nomenclatural types of species, was found in the reservoir. Bacillariophyta, Chlorophyta, and Streptophyta were represented by the largest number of species. The distribution of epiphytic algae species over the plants belonging to various ecological groups was non-uniform. On submerged plants, the number of algal species was 1.4 times higher than that on half-submerged plants and 1.9 times higher than that on plants with floating leaves. On higher aquatic plants of various ecological groups, the quantitative indices of phytoepiphyton development also significantly varied. On submerged plants, the average numbers of phytoepiphyton were one order of magnitude higher than those on half-submerged and plants with floating leaves, whereas its average biomass was two orders of magnitude higher than that on half-submerged and plants with floating leaves.
Zooplankton Development and Distribution in the Anthropogenically Changed and Natural Additional Water Bodies of the Upper Section of the Kanev Reservoir and of the Dnieper River
38-52
10.1615/HydrobJ.v52.i3.40
O. V.
Pashkova
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
zooplankton
qualitative and quantitative development
spatial distribution
anthropogenically changed and natural additional water bodies
water quality.
Data on the development and spatial distribution of zooplankton in the "modern" anthropogenically changed lakes of the upper section of the Kanev Reservoir and in the "old" natural floodplain lakes of the Dnieper River are given in the paper. It has been found that these communities differ in their species composition and structure. At the same time, they are rather similar in their quantitative characteristics. In addition, it has been found that in both groups of the lakes the distribution of zooplankton is conditioned by intrawaterbody hydrodynamic processes. In this case, the water is almost of the same quality − "rather clean − slightly contaminated".
Modern State of the Biota of the Selenga River Delta (Lake Baikal Basin) under Conditions of Unstable Hydrological Regime. Report II. Macrozoobenthos
53-64
10.1615/HydrobJ.v52.i3.50
N. A.
Rozhkova
Limnological Institute Siberian Department
Russian Academy of Sciences Irkutsk, Russian Federation
V. N.
Sinyukovich
Limnological Institute Siberian Department
Russian Academy of Sciences Irkutsk, Russian Federation
O. A.
Timoshkin
Limnological Institute, Siberian Department, Russian Academy of Sciences, Irkutsk, Russia
N. A.
Bondarenko
Limnological Institute of Siberian Branch of Russian Academy of Sciences,
P.O. Box 4199, Irkutsk 664033, Russia
A. V.
Nepokrytykh
Limnological Institute Siberian Department Russian Academy of Sciences Irkutsk, Russian Federation
A. N.
Matveyev
Irkutsk State University Irkutsk, Russian Federation
the Selenga River
delta
macrozoobenthos
biocenoses structure
water regime
flood
bottom sediments
Dynamics of the qualitative and quantitative composition of macrozoobenthos were investigated in the straits of the Selenga River delta under conditions of unstable water regime in July − October 2012. It has been shown that during the period of summer flood accompanied by significant fluctuations in water level and flowrate, and also by changes in the composition of bottom sediments, the structure of benthic communities also essentially changed. On the whole, during the period of investigations the average quantitative indices of macrozoobenthos registered at different stations and in different months varied over a wide range: numbers − 830−27067 specimens/m2, whereas biomass − 0.64−44.02 g/m2.
Peculiarities of Macrozoobenthos in Lakes of Different Mineralization of the Southern Section of the Ob-Irtysh Interfluve
65-73
10.1615/HydrobJ.v52.i3.60
O. N.
Vdovina
Institute of Aquatic and Ecological Problems Siberian Department Russian Academy of Sciences Barnaul, Russian Federation
D. M.
Bezmaternykh
Institute of Aquatic and Ecological Problems Siberian Department Russian Academy of Sciences Barnaul, Russian Federation
macrozoobenthos
lakes
mineralization
environmental factors
Ob-Irtysh interfluve
Composition and structure of benthic invertebrate communities of 41 lakes located in the southern section of the Ob-Irtysh interfluve were studied over 2007−2011. The benthic fauna comprises 170 species of 8 groups. Maximal species number belongs to Insecta, among which Diptera were the most diverse. The features of macrozoobenthos of the lakes with different salinity, i.e. from oligohaline to hyperhaline, were determined.
Factors Determining Eggs' Quality in Different Fish Species (a Review)
74-85
10.1615/HydrobJ.v52.i3.70
N. Yu.
Yevtushenko
National University of Life and Environmental Sciences of Ukraine, Kiev, Ukraine
A. G.
Sherelo
National University of Bioresources and Nature Managements Kyiv, Ukraine
fishes
fattening conditions
broodstock keeping
food quality
age
chemical composition of a body
environmental factors.
On the basis of the literature data information is generalized on indexes of eggs' quality in different fish species. The effect of the food quality, age of broodstock, chemical composition of their body and metabolic processes in the female organisms, fattening conditions and broodstock keeping, and well as environmental factors on the eggs' quality was considered.
Hormonal Regulation of Adaptive Processes in Fishes to Impact of Abiotic Factors (a Review)
86-98
10.1615/HydrobJ.v52.i3.80
M. V.
Prychepa
Institute of Hydrobiology National Academy of Sciences of Ukraine Kyiv, Ukraine
O. S.
Potrokhov
Institute of Hydrobiology National Academy of Sciences of Ukraine Kyiv, Ukraine
adaptation
cortisol
prolactin
somatotropin
osmoregulation
thyroid hormones
insulin-like growth factor 1
stress.
Literature data on functional significance of selected hormones in the vital activity of fishes were considered. It was shown that prolactin is actively involved in fish adaptation to the freshwater environment, cortisol and growth hormone promote fish adaptation to saline water and regulate processes associated with growth, forming of eggs and immunity. Joint effects of these hormones over changes of water salinity were analyzed. Adaptive role of hormones of thyroid and adrenal glands in the development of stress reactions of different fishes to changes of habitat conditions was considered.
Hemoglobin Content in Hemolymph of Planorbarius corneus (Mollusca: Gastropoda: Bulinidae) as Indicator of Complex Impact of Parasites and Toxicants
99-105
10.1615/HydrobJ.v52.i3.90
A. P.
Stadnichenko
Ivan Franko Zhytomyr University Zhytomyr, Ukraine
V. K.
Gyryn
Zhytomyr University Zhytomyr, Ukraine
O. D.
Shymkovich
Kazan Federal University Kazan, RF
Planorbarius corneus
Trematoda's redia and sporocysts
hemoglobin
sodium nitrate.
Paper deals with impact of sodium nitrate (0.1, 1, 10 and 100 mg/l3) on hemoglobin content in hemolymph of Planorbarius corneus in norm and at infestation by redia Echinoparyphium aconiatum and sporocysts Tylodelphys excavata. At equal toxicant' concentration and infestation degree hemoglobin content changed for more extent at infestation by "mature" sporocysts T. excavata than by immature redia E. aconiatum. Hemoglobin content in P. corneus hemolymph in toxic medium is conditioned by modification of some physiological-biochemical systems of different levels: hemoglobin/ oxyhemoglobin, inhibition of aerobic path of energy generation and glycolysis activation, hemoglobin transformation into methemoglobin.