Journal "Inland Water Biology"

№ 1 за 2008 год

Alimov A.F.

The Relationship Between Biological Diversity in Continental Waterbodies and Morphometry and Mineralization of their Water.

Zoological Institute of RAS, 199034 St. Petersburg, University Embankment, 1, Russia

The number of phytoplankton, zooplankton and macrobenthos species was studied in continental lakes of different origin, geographical position, hydrochemical (water mineralization) and morphological (area and capacity) characteristics. It is shown that the diversity of the benthos community depends on mineralization, area and capacity of a waterbody but to a greater degree it is dependant on area and water mineralization. The zooplankton community diversity depends on water mineralization and a little on area of a waterbody. Morphometrical characteristics and water mineralization in lakes do not influence much the number of phytoplankton species. Their number is to a greater extent dependant on other factors (light, biogenic elements etc.). The largest number of benthos and plankton species was registered in waterbodies with water mineralization 0.4 g/l. An increase in mineralization leads not only to a decrease of the species number but to simplification of the structure of communities of plankton and bottom organisms that is reflected by a decrease in the Shannon index of diversity. The studied correlations show a large spread in the number of species that can be beside the other unaccounted factors conditioned by a different degree of reliability of determination and counts of plankton and benthos species because of different classification of experts in taxonomy and systematics.

Genkal S.I.*, Pautova V.N.**, Nomokonova V.N.**,Tarasova N.G.**

About the Finding of Cyclotella ambigua Grunow (Bacillariophyta) in the Kuibyshev Reservoir.

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

** Institute of Ecology of the Volga River Basin of Russian Academy of Sciences, 445003 Togliatti, Samara Region, Komzin st., 10, Russia

Long-term data (1989–1995) on phytoplankton from the Kuibyshev Reservoir obtained by the method of scanning electrone microscopy allowed to reveal a salt water representative of centric diatoms Cyclotella ambigua Grunow new for the Volga river. Morphological features of the frustule including elements of valve ultrastructure (location and structure of central and marginal fultoportula, rimoportula, striae) are studied. The similarity and difference from other species of the genus C. exigua H?kansson, C. striata (Grunow) Grunow, C. scaldensis Muylaert et Sabbe, C. meneghiniana K?tzing are shown. On the basic of our own and literature data a broaden diagnosis of C. ambigua ecology and distribution of this species little known in Russia and abroad are presented.

Gagarin V.G.*, Nguyen Thi Thu**

Free-living Nematodes from Chu River of Northern Vietnam.

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

** Institute of Ecology and Biological Resources (IEBR) Vietnamese Academy of Science and Technology, 15 Hoang Quoc Viet Rd., 10000 Hanoi, Vietnam

In samples from Chu River 27 species of nematodes were found, 3 of them were new species for the science. The dominant species were Daptonema dihystera and Brevitobrilus stefanskii. A list of nematode species, the description and illustrations of Eumonhystera obscura sp. n. as new for the science species are presented.

Shcherbina G.Kh., Zelentsov N.I.

Chironomids (Diptera, Chironomidae) Fauna of Some Mongolian Waterbodies and Watercourses.

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

An annotated list of chironomid species from some waterbodies and watercourses of Mongolia determined by imago stage of development is presented. The list includes 97 species from 39 genera and 5 subfamilies: Tanypodinae (6), Diamesinae (1), Prodiamesinae (2), Orthocladiinae (33), Chironominae (55). Of all discovered imago of chironomids 11 species were previously known for the flora of Mongolia but the rest 86 species were registered for the first time. The largest numbers of species were registered in Lake Sangiyn-Dalai (28), Lake Ugiy (19) and River Ider (19). In the rest of lakes the number of discovered species varied from 18 to 10 and in rivers – from 13 to 2. Most of the species are boreal and widespread, 44 species are paleoarctic, 49 – holarctic.

Plotnikov A.O.*, Korneva J.V.**.

Morphological and Ultrastructural Characteristic of Symbiotic Bacteria, Colonizing Helminth Triaenophorus Nodulosus Surface and Pike Esox Lucius Intestine.

* Institute for Cellular and Intracellular Symbiosis UB RAS, 460000 Orenburg, Pionerskaya st., 11

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

Microflora, inhabiting pike intestine mucous and tegument surface of intestinal parasite Triaenophorus nodulosus have been investigated. As a result of electron microscopy study ultrastructural features of bacteria and patterns of their interaction with colonized surfaces have been estimated. Specific distribution of microorganisms belonging to different morphotypes and dividing into subpopulations on colonized surfaces has been found. Predominance of gram-negative bacteria in all studied microbiocenoses and abundance of nannobacteria in “superficial” subpopulations have been observed. Bacteria of “a deep population”, associated with basal parts of microtriches and microvillae are described. The conclusion has been made that helminthes – fish parasites have indigenous normal microflora, characterized by specific composition, by ultrastructural features of cells and by patterns of interaction with helminth surface. The obtained data characterize mechanisms of symbiotic interactions of prokaryotes and eukaryotes in the system parasite–host–symbiotic microflora.

Mylnikov A.P., Mylnikova Z.M., Tikhonenkov D.V.

The Main Cell Morphology of the Freshwater Colourless Chrysomonad Spumella sp. (Ochromonadales, Chrysophyceae).

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

The cell structure of the freshwater chrysomonad Spumella sp. has been considered. The cell contains the vesicular nucleus, mitochondria with tubular cristae, Golgi apparatus, flagellar roots and wide dorsal microtubular band. The flagella bear the spiral of 4-5 coils in the transitional zone. The rudiments of mastigonemes have been found in the perinuclear space. The compact leucoplast has the amorphous core, surrounded by the membrane. The stigma has not been detected. The leucosin vacuole, rhizoplast and the swelling of the short flagellum are absent. 1–3 osmiophilic granules lie near leucoplast. The contractile vacuiole is surrounded by the tubules. The resemblance and difference of investigated flagellate with other chrysomonads are discussed.

Litvinenko L.I., Boyko Е.G.

The Morphological Characteristics of Artemia Shrimps from Siberian Populations.

State Research-and-Production Centre of Fishery, 625023 Tyumen, ul. Odesskaya, 33, Russia<>

Morphological analysis of characteristics of shrimps from parthenogenetic and bisexual Artemia populations, from a vast territory from the Urals to Sayan Mountains was made. A normal distribution of the majority of parameters and a different degree of their interrelation and dependence on some environmental factors (salinity, ion composition and ratio) was marked. The analysis included seasonal, interannual, sexual Artemia variability. The greatest influence of salinity as a whole and separately of main ions (except for carbonates, hydrocarbonates and calcium) on abdomen and furca structure is shown. No correlation was found between water salinity and a body length. The cluster analysis of a complex of morphological parameters showed grouping of populations by salinity of lakes, instead of their geographical position and sexual structure of populations.

Kopylov A.I., Kosolapov D.B., Zabotkina E.A.

Distribution of Viruses and Their Impact on Bacterioplankton in Mesotrophic and Eutrophic Reservoirs.

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

Spatial distribution of planktonic virus-like particles (virioplankton) and mortality of heterotrophic bacteria caused by viral lysis were studied in the eutrophic Ivankovo and mesotrophic Uglich reservoirs (the Upper Volga). During the summer peak of phytoplankton the number of virus-like particles was higher in the Ivankovo reservoir (on average (55.1 ± 9.5) ? 106 ml-1) than in the Uglich reservoir (on average (42.9 ± 5.1) ? 106 ml-1). The ratio of viral abundance to bacterial abundance ranged from 2.5 to 7.0. The average number of mature phages in infected heterotrophic bacteria varied from 17 to 109 cell-1. Most of infected bacterial cells in the Ivankovo reservoir were rod-shaped, and in the Uglich reservoir – vibrio-shaped. In the Ivankovo reservoir from 8.3 to 22.4% of planktonic bacteria were infected by pages that suggest phage-induced mortality of bacterioplankton equaled to 10.5–34.8% (on average 19.1%) of daily bacterial production. In the Uglich reservoir from 9.4 to 33.5% of bacteria were phage-infected that suggest phage-induced bacterial mortality from 13.7 to 40.2% (on average 23.5%) of daily bacterial production. The obtained results testify to an important role of autochthonous viruses in regulation of bacterioplankton abundance and production in the reservoirs.

Patova E.N., Demina I.V.

Algae in Waterbodies of Polar Ural Which Are Not Subjected to Anthropogenic Effect.

Institute of Biology of Komi Science Center of the Ural Division RAS, 167982 Syktyvkar, ul. Kommunisticheskaya, 28, Russia

Results of algological studies of water bodies of Manikuyacha river basin are presented. 172 taxa are identified. 65 taxa are new for the region of Bolshesemelskaya tundra and 130 taxa: 3 genera, 116 species (121 infraspecial taxa) and 6 varieties are first presented for water bodies of Polar Ural. The assessment of the modern state of the studied waterbodies was made on the basis of hydrochemical and algological indices.

Mineeva N.M.*, Litvinov A.S.*, Stepanova I.E.*, Kochetkova M.Yu.**

Chlorophyll Сontent and Factors of Its Spatial Distribution in the Middle Volga Reservoirs.

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

** MNR Center of laboratory analysis and monitoring in Privolzhskiy federal district, 603001 Nizhny Novgorod, Rozhdestvenskaya st., 38, Russia

According to the data of field observations obtained during a mean water period of 2001, peculiarities of chlorophyll distribution and its relation to hydrological and hydrochemical factors in two eutrophic Volga river reservoirs are considered. Hydrological structure of the Gorky reservoir where the Volga water mass dominates is homogeneous. In the Cheboksary reservoir along with eutrophic Volga water masses the mesotrophic Oka waters can be distinguished that keep their abiotic and biotic features over a long distance. Phytoplankton in two contiguous reservoirs with different flow regimen and anthropogenic impact responds differently to external influence. A stable autotrophic community in the Gorky reservoir does not depend much on the set of abiotic factors that explain only about 63% of chlorophyll variation. In the Cheboksary reservoir under the highest flow velocity and anthropogenic impact in the Volga cascade the phytoplankton community is less stable and depends much on considered hydrological and hydrochemical factors that almost completely control its development (R2 = 0.93). The trophic state of the both reservoirs did not change during the 1990s.

Krylov A.V.

Impact of Beaver Vital Activity on Zooplankton in a Submountain River (Mongolia).

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

It is shown, that the beavers vital activity at the absence of their building activity, promote the increase of quantitative abundance and the alteration of qualitative structure of zooplankton. The number, biomass, abundance, number of kinds and value of Shannon indexes of Copepods grows on the sites with flowing water. The biomass and abundance of Cladocerans increase in not running floodplain reservoirs, parallel with the reduction of their number of kinds and uniformity of communities.

Lazareva V.I.

New and Rare Zooplankton Species Expansion and Particular Features of Their Naturalization in Waterbodies of the Upper Volga Basin.

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

More Than 10 new species of zooplankton were registred in Reservoirs of the Upper Volga during the period 2002–2005. Since 2003 Cladoceran Diaphanosoma orghidani Negrea, has intensively settled in different biotopes of Ivankovo, Uglich, Rybinsk and Sheksna Reservoirs and is the most abundant (16 thous. ind./m3) in the latter. Rotifer Asplanchna henrietta Langh. was first found in Rybinsk Reservoir in 1985, and by 2004 has this species also occurs in Ivankovo, Uglich Reservoirs, Lake Nero and some small waterbody of the basin. In Lake Nero its density reaches especially high values (>1 million ind./m3). Causes, mechanisms and ecological consequences of the expansion of new zooplankton species are discussed.

Skalskaya I. A., Bakanov A.I., Flerov B.A.

Study of Zooperiphyton and Zoobenthos of a Small River.

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

This study investigated features of zooperiphyton and zoobenthos structure in a small river. Under conditions of the maximal closeness of spatial niches, these groups of invertebrates preserve taxonomic and ecological heterogeneity. Distinctions between zooperiphyton and zoobenthos taxonomic structures are most manifested in composition of Diptera, Oligochaeta and Mollusca. Chironomid larvae (Orthocladiinae, Chironominae and Tanytarsini), oligochaetes of the family Naididae and mollusks of the family Limnaeidae dominate in periphyton. Chironomid larvae (Chironominae and Tanypodinae), oligochaetes of the family Tubificidae and mollusks of the family Pisidiidae are dominant in benthos. On average, bottom invertebrates are significantly larger than fouling organisms. At similar abundance, benthos biomass is an order of magnitude higher than the biomass of periphyton. Ranging by average biomass of zooperiphyton and zoobenthos revealed a common leader – a mobile large predator, leach Erpobdella octoculata. Anthropogenic and zoogenic (beavers) effects on the river hydrobionts are similar.

Golovanova I.L.

Effect of Heavy Metals on Physiological and Biochemical Status of Fishes and Aquatic Invertebrates.

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

Effect of heavy metals on physiological and biochemical parameters of fishes and water invertebrates have been reviewed. The mechanisms of uptake and detoxication, and the influence of various biotic and abiotic factors on heavy metals toxicity (predominantly Cu, Zn, Cd and Hg) in fishes and water invertebrates are considered.

Trifonova I.S.

The International Conference "Bioindication in monitoring of freshwater ecosystems".

© 2008-2019 IBIW RAS

Message to webmaster

Яндекс цитирования Рейтинг Яндекс.Метрика