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Journal "Inland Water Biology"

№ 3 за 2015 год

S. I. Genkal*, T. A. Chekryzheva**

Diatoms in the Southern Part of the Republic of Karelia (Lakes of the Vendyurskaya Group and Zaonezhiye).

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

**Northern Water Problems Institute, Karelian Research Centre of RAS, 185003 Petrozavodsk, Pr. A. Nevskogo, 50, Republic of Karelia, Russia

e-mail: genkal@ibiw.yaroslavl.ru

The first study of centric diatoms in the southern part of Karelia (Lake Zaonezhiye and lakes of the Vendyurskaya group) has been conducted using scanning electron microscopy. A total of 22 species from 7 genera have been detected: Aulacoseira – 9, Cyclostephanos – 1, Cyclotella – 6, Discostella – 1, Handmannia – 1, Melosira – 1, Stephanodiscus – 3. The species diversity of centric diatoms in the lakes under study varies from 8 to 14 taxa and Aulacoseira ambigua (Grunow) Simonsen, A. islandica (O. Müller) Simonsen, A. subborealis (Nygaard) Denus, Muylaert et Krammer, Cyclotella rossii Håkansson and Discostella stelligera (Cleve et Grunow) Houk et Klee are the most widespread. The representative of the genus AulacoseiraA. subborealis is presented for the first time for waterbodies of Karelia as an independent taxon of the species rank.

Keywords: lakes, Karelia, Zaonezhiye, Vendyurskaya group, phytoplankton, Bacillariophyta, Centrophyceae, flora, electron microscopy.

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B. F. Sviridenko*, T. V. Sviridenko*, K. S. Yevzhenko**

First Finding of Diatom Spirogyra subcolligata Bi (Spirogyraceae, Zygnematales) in Russia.

*Surgut State University, 628412 Surgut, Tyumen Oblast, ul. Energetikov, 22, Russia

**Omsk State Pedagogical University, 644099 Omsk, Tukhachevsky Embankment, 14, Russia

e-mail: bosviri@mail.ru

Two fertile populations of the species Spirogyra subcolligata Bi new to the algal flora of Russian have been found in the steppe and the forest-steppe zones of the West Siberian Plain. Its illustrated description is given. The major distinctions of Spirogyra subcolligata from other Colligata section species is smooth mesosporium and no lateral conjugation.

Keywords: Spirogyra subcolligatа, Zygnematales, fertile populations, West Siberian Plain.

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N. G. Kosolapova, A. P. Myl’nikov

The First Findings of Centrohelid Heliozoans (Centrohelida) in Mongolia.

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

e-mail: kng@ibiw.yaroslavl.ru

The species composition [list], distribution and features [characters] of morphology of centrohelid heliozoans (Centrohelida) in fresh waters of Mongolia using the methods of scanning electron microscopy have been studied. For the first time six species belonging to families Raphidiophryidae Mikrjukov, 1996 and Acanthocystidae Claus, 1874 have been found in this region [country]. The morphology of the heliozoans mainly corresponds to literature data. The illustrated descriptions of found species have been given.

Keywords: Heliozoa, Centrohelida, periplast, scales, spicules, Mongolia.

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A. I. Kopylov, E. A. Zabotkina, A. V. Romanenko

Viruses in Bottom Sediments in an Eutrophic Reservoir (Ivan’kovo Reservoir, Upper Volga).

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

e-mail: kopylov@ibiw.yaroslavl.ru

The total number of viruses, morphological and size composition of viriobenthos, number of bacterial cells infected by viruses, number of mature phages inside bacterial cells, and virus-induced mortality of bacteriobenthos were estimated in bottom sediments of the Ivan’kovo Reservoir. The total number of viriobenthos in the reservoir ranged from 10.3 to 83.2 (31.5 ± 6.2 on average) billion particles/cm³. The total number of viruses-to-bacteria ratio in the Ivan’kovo reservoir varied between 0.3 and 1.7 (0.7 ± 0.1 on average). A positive correlation between viral and bacterial abundance was found (R = 0.61, p = 0.05). In different parts of the reservoir, viral infection of bacteria was not observed or was very low. The number of infected bacteria ranged from 1.0 to 3.5% (1.7 ± 0.2% on average) of the total viriobenthos abundance and mortality due to viral lysis accounted for 1.0–3.7% (1.8 ± 0.2% on average) of the total bacterial mortality. The number of phages found inside bacterial cells averaged 8 ± 1 phages/cell. Thus, a phenomenon known as “infection paradox” was observed in the Ivan’kovo Reservoir when at a very high viral abundance no viral infection of bacteria was recorded or it was very low.

Keywords: viriobenthos, bacteria infected by viruses, virus-induced mortality of bacteriobenthos, reservoir.

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V. I. Lazareva, E. A. Sokolova

Metazooplankton in the Plains Reservoir During the Period of Climate Warming: Biomass and Production.

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

e-mail: laz@ibiw.yaroslavl.ru

The structure and dynamics of biomass and production of different trophic groups of metazooplankton in the Rybinsk Reservoir before climate warming (until 1977) and in the present period have been analyzed on the basis of long-term (1956–2010) observations. Values of biomass (0.9 g/m³) and production (54 kcal/m²) in the pelagial of the reservoir during 2004–2010 are lower than at the peak of metazooplankton development in the 1980s (1.2 g/m³ and 73 kcal/m²) but are 1.5 times higher (0.6 g/m³ and 37 kcal/m²) than before climate warming. Modern productivity of metazooplankton corresponds to the level of eutrophic waterbodies. As the result of warming the duration of the period of mass development has increased by ~2 weeks, and the maximum of biomass and production is registered in the second half of summer (August). The efficiency of the energy transfer from the herbivorous to predatory plankton and the rate of the cycle of matter in zooplankton of large plains reservoirs are considered in relation to changes in the trophic status of their ecosystems under climate warming.

Keywords: metazooplankton, structure, production, reservoir, climate warming.

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T. A. Chuzhekova

Dynamics of Macrozoobenthos Structure in Urban Spring Brooks of the Middle Volga Basin.

Sаnkt-Petersburg State University, 199178 St.-Petersburg, 16 line, 29, Russia

e-mail: chuzhekova@gmail.com

The benthic community structure on six spring brooks within precincts of the city of oblast and two spring brooks in the “Samarskaya Luka” in the National Park was studied during 2006 to 2011. Changes in the structure of dominant species were more expressed in the urban brooks than in brooks in the reserve territory. Three main types of changes in the structure of invertebrate communities associated with organic matter dynamics, species expansion and drying of a watercourse have been distinguished.

Keywords: spring brooks, benthos, dymanics of communities, dynamics of patches, organic matter, drying up, species expansion, Middle Volga basin.

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O. М. Potyutko

The Oligochaeta (Annelida, Clitellata) in the Curonian Lagoon of the Baltic Sea.

Kaliningrad State Technical University, 236000 Kaliningrad, Pr. Sovetsky, 1, Russia

e-mail: pbklp@list.ru

The species composition of Oligochaeta (Annelida) was studied in the Russian part of the Curonian Lagoon. At the contact zone and in the open part 40 species from 42 known species in the bay as whole were identified. The genus Nais, which is represented by 10 species, has the richest species diversity. In the contact zone on all types of sediments Limnodrilus hoffmeisteri dominates and forms the basis of abundance and biomass, together with two concomitant species Tubifex tubifex and Psammoryctides barbatus in the top 5-cm layer of sediments. The highest species diversity of macrophytes was observed in silty sediments, and the minimum diversity was in sandy siltstones.

Keywords: Oligochaeta, Curonian Lagoon, contact area, vertical distribution, grain size analysis.

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О. А. Loskutova*, N. I. Zelentsov**, G. Kh. Shcherbina**

Fauna of Chironomids (Diptera, Chironomidae) of the Kolva River (Pechora Basin) under the Conditions of Oil Pollution.

*Institute of Biology, Komi Scientific Centre of UB RAS, 167982 Syktyvkar, ul. Kommunisticheskaya, 28, Russia

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

e-mail: loskutova@ib.komisc.ru

The data on the taxonomic composition of chironomids of a river in Pechora basin and its tributaries under the oil pollution is presented. The list of identified chironomids includes 121 species and forms from 5 subfamilies. The larger number of species is typical for subfamilies Chironominae (57) and Orthocladiinae (43). Long-term qualitative and quantitative changes of the larval Chironomidae in the composition of zoobenthos in relation with oil pollution are traced. It was shown that the diversity of species and the quantity of chironomids grow under the moderate oil pollution and decrease under the heavy one. A mosaic distribution of the chironomid fauna in the watercourses was stated.

Keywords: non-biting midge, fauna, streams, Pechora basin, oil pollution.

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E. A. Zabotkina, Yu. V. Gerasimov

First Detection of Dermatofibrosarcoma in Zander Sander lucioperca L. from the Rybinsk Reservoir.

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

e-mail: zabel@ibiw.yaroslavl.ru

Using TEM investigated cytological structure of the first detection of tumors in walleye in the Rybinsk reservoir. Found cells containing altered structure of the nucleus and cytoplasm, and the cells include virus. Examined the similarities detected changes with similar disease of fish in the United States and Canada.

Keywords: zander, dermatofibrosarcoma, subcellular changes, Rybinsk Reservoir.

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V. G. Tereshchenko*, I. Yu. Buzevich**, D. S. Khrystenko**, L. I. Tereshchenko*

Specific Growth Rate of Kilka Clupeonella cultriventris (Nordmann, 1840) Populations in Dneprodzerzhinsk and Kremenchug Reservoirs at Different Phases of Its Naturalization.

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

**Institute of Fisheries of National Academy of Agrarian Sciences of Ukraine, 03164 Kiev, ul. Obuchovskaya, 135, Ukraine

e-mail: tervlad@ibiw.yaroslavl.ru

The average, maximum and minimum specific growth rates of kilka populations in two reservoirs of the Dnieper cascade at different phases of its naturalization are analyzed. Detailed elaboration of terms of transit of kilka phases is made on the basis of dynamic phase portraits of the invader abundance. The byuperiods of determination of populations in the stable state are revealed. The kilka potential growth rate in the Dneprodzerzhinsk and Kremenchug reservoirs is estimated.

Keywords: kilka, population, invader, naturalization phases, specific growth rate, Dneprodzerzhinsk and Kremenchug reservoirs.

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I. I. Tomilina*, V. A. Gremyachikh*, L. P. Grebenyuk*, E. A. Smirnov**, E. I. Golovkina*

Changes in Biological Parameters of Freshwater Animals under the Effect of Different Crystal Modifications of Titanium Dioxide Nanoparticles.

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

**Lomonosov State University, 119991 Moscow, Leniskiye gory, 1, Russia

e-mail: i_tomilina@mail.ru

The effect of titanium dioxide (anatase and rutile isoforms) nanoparticles suspensions on biological parameters of hydrobionts of different various systematic status have been studied. The most sensitive were Ceriodaphnia affinis Lillijeborg, 1862, the most toxicoresistent were fish a Danio rerio Hamilton-Buchanan, 1822. Anatase in concentrations equal to rutile provided a more pronounced toxic effect on hydrobionts.

Keywords: nanoparticles, crystal modification, anatase, rutile, toxicity, hydrobionts.

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V. V. Bezmaternykh, G. Kh. Shcherbina

Size-Weight Characteristics of the Late Instar Larvae of Chironomidae of Vishtynetskoe Lake.

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

e-mail: gregory@ibiw.yaroslavl.ru

Body length, fresh weight and head capsule width means and extreme values of 3rd and 4th instars chironomid larvae are given for Vistynetskoe Lake.

Keywords: chironomids, head capsule, instar, length, weight.

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