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Journal "Inland Water Biology"

№ 2 за 2014 год

A.A. Protasov, А.A. Sylaeva

Contourization and its Features in Techno-ecosytems.

Institute of Hydrobiology of NAS of Ukraine, 04210 Kyiv, Geroyiv Stalingrada prospect, 12, Ukraine

e-mail: protasov@bigmir.net, labtech-hb@ukr.net

The phenomenon of shift of the main production-destruction processes from pelagic subsystem to bottom (contour biotops) have different names and interpretations, depending on different “triggers” of the process. Its phenomenon hould be viewed as a process of contourization which emphasizes strengthening the role of contour grouping (benthos and periphyton) here. The introduction of the zebra mussel (Dreissena polymorpha) in the cooling reservoir of Khmelnitsky NPP (Ukraine) has led to a significant increase in water transparency, the abundance grows of filamentous algae and high macrophytes. The increase in the abundance of contourobionts led to significant biological disturbances in the operation of equipment associated with the water supply of nuclear power plant.

Keywords: contour communities, contourobionts, benthos, periphyton, bentiphication, сontourization, techno-ecosystem.

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V.I. Lazareva, S.E. Bolotov

Peculiarities of the Biology of two Diaphanosoma Species (Crustacea, Cladocera) in the Rybinsk Reservoir.

Institute for Biology of Inland Waters RAS, 152742 Borok, Russia

e-mail: laz@ibiw.yaroslavl.ru

In 2005–2011 the spatial distribution, long-term dynamics of occurrence and abundance as well as patterns of the seasonal cycle of two cladocerans, an alien species D. orghidani and a native species D. brachyurum, were studied in Rybinsk Reservoir. It has been found that over a seven-year period the successful co-existence of the species is favored by differences in a seasonal cycle, the pattern of distribution in the reservoir area, the predator press and preference of the alien species for the parts of the reservoir with running water where the native species was not numerous. Competitive advantages of the invader under conditions of global warming are discussed.

Keywords: reservoir, zooplankton, alien species, interspesific relations, global warming.

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S.A. Kurbatova, I.Yu. Yershov, N.A. Lapteva, E.V. Borisovskaya

Changes in Habitats of Planktonic Crustaceans by Hornworts: the Impact on the Abundance of Daphnia.

Institute for Biology of Inland Waters RAS, 152742 Borok, Russia

e-mail: kurb@ibiw.yaroslavl.ru

The effect of submerged hydrophytes Ceratophyllum demersum L. on the abundance of Daphnia longispina O.F. Müller has been studied. The experiment demonstrates that the hydrochemical characteristics in overgrowths of Ceratophyllum are within the limits of tolerance of D. longispina. The concentrations of phosphates, chlorophyll a and bacterial biomass increase in the presence of hornwort in water. In overgrowths of plants Daphnia is suppressed due to restriction of its movement. In the medium which contains only metabolites of Ceratophyllum the abundance of Daphnia longispina increases due to enrichment of the food supply.

Keywords: submerged hydrophytes, planktonic crustaceans, Ceratophyllum demersum, Daphnia longispina.

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Nguyen Dinh Tu*, Gagarin V.G.**, Nguyen Vu Thanh*, Nguyen Thi Xuan Phuong*, Nguyen Thanh Hien*

Two New Nematode Species of the Genus Daptonema Cobb, 1920 (Nematoda, Xyalidae) from Mangrove Forest Estuary of the Red River, Vietnam.

*Department of Nematology, Institute of Ecology and Biological Resources, Vietnamese Academy of Sciences and Technology, 1000 Hanoi, Vietnam


**Institute for Biology of Inland Waters RAS, 152742 Borok, Russia

e-mail: gagarin@ibiw.yaroslavl.ru

Illustrated descriptions of two new marine free-living nematode species of the genus Daptonema Cobb, 1920: Daptonema paraoxyuroides sp. n. and D. balatum sp. n., found in the estuary Red River of the North Vietnam are presented. D. paroxyuroides resembles D. oxyuroides, but differs from it by shorter and thicker body, slenderer tail, shorter cephalic setae and shorter spicules. D. balatum sp. n. differs from all known valid species of the genus Daptonema by a special construction of the copulative apparatus of males.

Keywords: Vietnam, Red River, free-living nematode, Daptonema paroxyuroides sp. n., Daptonema balatum sp. n..

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L.P. Kozyreva*, D.V. Egorova*, L.N. Ananyina**, E.G. Plotnikova**, B.B. Namsaraev*

Microbial Diversity of Cellulose-Degrading Sandy Mats Community From Lake Zun-Torey (Southern Transbaikal Region).

*Institute of General and Experimental Biology SB RAS, 670047 Ulan-Ude, ul. Sakhyanovoi, 6, Russia


**Institute of Ecology and Genetics of Microorganisms UrB RAS, 614081 Perm, ul. Goleva, 13, Russia

e-mail: l-kozyr@mail.ru

The diversity of the microbial community enrichment cultures from the sandy mat the soda lake of the Zun-Torey (Transbaikal Region) was studied. The use of classical microbiological and molecular techniques allowed us to estimate the abundance and the diversity of bacteria and to characterize cellulose-degrading community from different horizons.

Keywords: soda lake, sandy mat, taxonomic diversity, denaturing gel electrophoresis, 16S rRNA gene.

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L.A. Medvedeva*, A.A. Semenchenko**

Phytoperiphyton of Samarga River Basin (Primorsky Region).

*Institute of Biology and Soil Sciences, Russian Academy of Sciences, 690022 Vladivostok, Stoletiya Street, 159 Russia


**Far Eastern Federal University, 690000 Vladivostok, Sukhanova Street, 8, Russia

e-mail: medvedeva@ibss.dvo.ru

Algal flora of the Samarga River basin has 313 species of algae (including infraspecific taxa – 337) from the eight divisions. The groups of algae from main flow of the river, creeks, canals and mouth part are described. There are data on density and biomass of periphyton algae. Decrease in these parameters after the flood is shown. In algal flora composition oligohalobic species of algae prefer a slightly alkaline environment are dominated. At the river mouth significant amount of mezohalobic species are observed. Sanitary and biological evaluation of water quality showed that the mass growth of the xeno-and oligosaprobic algae defines the excellent quality of the river water. All plots from the main flow zone are correspond to oligosaprobic purification, II class of water purity (saprobic index of 0.95–1.48). Good quality of the Samarga River water is ensured due to the absence of pollution sources and satisfactory condition of its catchment forests.

Keywords: algae, periphyton, density, biomass, water quality, Samarga river.

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V.A. Кonogray

Pecularities of overgrowing of the Kremenchug Reservoir.

Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 01601 Kiev, ul. Tereshchenkovskaya, 2, Ukraine


Bogdan Khmelnysky Cherkassy National University, 18031 Cherkassy, bul. Shevchenko, 81, Ukraine

e-mail: w_a_konograj@ukr.net

The general description of flora changes is presented based on the results of the studies of changes in flora and patterns of overgrowing of the Kremenchug Reservoir under anthropogenic effect which were conducted in 2007–2011. The types of geo-complexes where synergetic processes occurred were distinguished according to origin and nature of hydrological processes in the area of the reservoir.

Keywords: Kremenchug Reservoir, syngenesis, overgrowing, changes in flora.

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V.N. Trokhymets

Littoral Zooplankton in the Lower Part of the Kanev Reservoir.

National Taras Shevchenko University of Kiеv, 01033 Кiev, ul. Vladimirskaya, 64, Ukraine

e-mail: realwolf@univ.kiev.ua

The basic results of the modern study of littoral zooplankton in the lower part of the Kanev reservoir are presented. New methodical approaches were used to choose the monitoring stations and methods of sampling depending on the type and area of artificial waterbodies. The modern tendencies of formation of species diversity of zooplankton in the littoral have been analyzed. For the first time three species have been first registered in the fauna of Ukraine and 17 – in the Kanev reservoir. The analysis of faunistic spectrum, biotopical distribution and quantitative indexes of zooplankton is conducted.

Keywords: littoral zooplankton, species diversity, ecological features, quantitative indexes, the Kanеv reservoir, Ukraine.

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V.V. Bogatov

The Relationship Between Biomass and Drift of River Benthic Invertebrates.

Institute of Biology and Soil Sciences, Far Eastern Branch, Russian Academy of Sciences, 690022 Vladivostok, 100-letiya Vladivostoka Avenue, 159, Russia

e-mail: vibogatov@rambler.ru

For estimation of the relationship between biomass and drift of river benthic invertebrates (Gammarus lacustris Sars, larvae of mayfliesand chironomids), the parameter of specific drift rate which is the ratio of drift rate to their biomass density is used. The negative correlation between the specific drift rate and biomass density has been obtained. It is suggested that the decrease in the specific drift rate of amphipods and the increase in their biomass in bottom sediments are associated with patterns of feeding and sexual behavior of crustaceans, and the similar decrease in the specific drift rate of insect larvae is associated with the formation of the aggregative behavior of invertebrates which provides mass emergence of imago.

Keywords: river, benthos, amphipods, mayfly larva, chironomid larva, drift rate, specific drift rate, biomass, competition, behavior.

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G.I. Izvekova, A.V. Tyutin

Activity of Digestive Enzymes and Distribution of the Trematode Bunodera luciopercae (Müller) in the Intestine of Young Perch Infected With Triaenophorus nodulosus (Pallas) Plerocercoids.

Institute for Biology of Inland Waters RAS, 152742 Borok, Russia

e-mail: izvekov@ibiw.yaroslavl.ru

The infection with Triaenophorus nodulosus (Pallas) plerocercoids was shown to effect both the activity of digestive hydrolases and localization of trematodes in the intestine of the young perches. Infected fish exhibited higher proportion of Bunodera luciopercae (Müller) marites in the posterior intestinal segment compared with non-infected specimens. Moreover, in the young fish having cestode-induced damages of the liver, the activities of digestive hydrolases decreased, particularly in the anterior segment of digestive tract.

Keywords: fish, cestodes, trematodes, digestive enzymes.

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E.N. Kashinskaya*, E.V. Suchanova**, M.M. Solovyev*, G.I. Izvekova***, V.V. Glupov*

The Diversity of Microbial Communities of Mucus and Intestinal Contents of Fish in Lake Chany (Western Siberia).

*Institute of Animal Systematics and Ecology, Siberian Division RAS, 630091 Novosibirsk, ul. Frunze, 11, Russia


**Limnological Institute, Siberian Division RAS, 664033 Irkutsk, ul. Ulan-Batorskaya, 3, Russia


***Institute for Biology of Inland Waters RAS, 152742 Borok, Russia

e-mail: elena.kashinskaya@inbox.ru

In the present study, we used a polymerase chain reaction to identify the diversity of bacterial community in intestine mucosa and intestinal contents of fry fish with different feeding habits. The total DNA of microorganisms was extracted from the intestine mucosa and intestinal contents and amplified using group-specific primers of the 16S rRNA gene of bacteria. The profiles of the 16S rRNA gene amplicons displayed the availability of 7 phylums of bacteria in the intestine and intestinal contents of fry fish. Significant differences has been shown in the composition of intestinal microflora and intestinal contents of omnivorous (crucian carp, roach and dace) and carnivorous fish (pikeperch, perch and pike).

Keywords: fish, intestinal microbiota, phylogenetic diversity.

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V.T. Komov*, N.M. Pronin**, B. Mendsaikhan***

Mercury Content in Muscles of Fish From the Selenga River and Lakes of Its Basin (Russia).

*Institute for Biology of Inland Waters RAS, 152742 Borok, Russia


**Institute of General and Experimental Biology, SD Russian Academy of Sciences, 670047 Ulan-Ude, ul. Sachyanovoi, 8, Russia


***Institute of Geoecology, Mongolian Academy of Sciences, 211238 Ulaanbaatar, Baruun Selbe, 13, Mongolia

e-mail: vkomov@ibiw.yaroslavl.ru

The results of the study show smaller amount of mercury in muscles of fish from the Gusinoye and Karasinoye lakes in comparison with muscles of fish from Selenga. This fact can indicate the insignificant income of mercury into the aquatic ecosystems with atmospheric precipitation and the higher level of migration of metal with Selenga water flow. The minimal concentration of mercury (less than 0.15 mg/kg of dry weight) has been registered in the muscles of sleeper from the Karasinoye lake and arctic cisco from Baikal, while the maximal concentration (1.0–2.3 mg/kg of dry weight) has been discovered in fish caught in delta of the Selenga river (in predators – pikes, sheatfish, perch, as well as in omnivorous fish – roach and ide). The trend to decrease of metal accumulation in muscles of dace in the downstream stations compared to upstream stations has been determined.

Keywords: mercury, fish, Selenga River, lakes, Baikal.

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