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Journal "Inland Water Biology"

№ 4 за 2015 год

V.S. Vishnyakov*, M.S. Kulikovskiy*, N.I. Dorofeyuk**, S.I. Genkal*

Morphology and Distribution of Cymbella neocistula Krammer and Cymbella nepalensis (Jüttner & Van de Vijer) Vishnjakov stat. nov. (Bacillariophyceae) in Water Bodies of South Siberia and Mongolia.

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

**Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071 Moscow, Leninskii pr., 33, Russia

e-mail: aeonium25@mail.ru

Valve morphology of taxa from Cymbella cistula-group in different water bodies of South Siberia (Russia) and NW Mongolia has been investigated. Two similar species C. neocistula Krammer and C. nepalensis (Jüttner & Van de Vijer) Vishnjakov stat. nov. were found. C. nepalensis differs from C. neocistula by valve outline and usually higher number of stigmata on the central area. Morphological variability of taxa closely related to other species from C. cistula-complex, its ecology and distribution are discussed.

Keywords: diatoms, Cymbella, morphology, taxonomy, geographical distribution, Siberia, Russia, Mongolia.

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A.N. Efremov*, A.V. Filonenko**, B.F. Sviridenko***

Anatomy and Morphology of Reproductive Organs of Stratiotes aloides L. (Hydrocharitaceae).

*Omsk State Pedagogical University, 644099 Omsk, nab. Tukhachevskogo, 14, Russia

**Moscow Pedagogical State University, 129366 Moscow, ul. Kibalchycha, 6, bldg. 5, Russia

***Surgut State University, 628412 Surgut, Tyumen oblast, Khanty-Mansi Autonomous Okrug, ul. Energetikov, 22, Russia

e-mail: stratiotes@yandex.ru

The results of the studies on the structure of reproductive organs of Stratiotes aloides L., the only existing species of Stratiotes L. genus, are presented. Organographical analysis has been made, detailed morphological and anatomical descriptions of perianth, androecium, gynoecium, fruit on different stages of morphogenesis have been reported, correlation relationships in the morphogenesis of flower and inflorescence have been examined, with a special focus on the issues of sexual dimorphism. In the structure of the reproductive organs the main histological topographical complexes and their proportions, histochemical features have been identified. It is found that S. aloides androecium diversified in two alternative directions: the secretion of nectar (pistillate flower) and the production of fertile pollen (staminate flower) with preservation of intermediate structural and functional forms. Gynoecium should be defined as the inferior hexamerous hemiparacarpous. S. aloides fruit is hexamerous inferior hemiparacarpous follicle.

Keywords: Stratiotes aloides, morphology, anatomy, flower, androecium, gynoecium, fruit.

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V.A. Gusakov, V.G. Gagarin

Two Species of Nygolaimid (Nematoda, Dorylaimida) from Water Bodies of Vietnam.

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

e-mail: gva@ibiw.yaroslavl.ru

Illustrated descriptions of two nematode species from the genus Aquatides Heyns, 1968, A. heynsi sp. n. и A. thornei (Schneider, 1937), found in freshwater bodies of Vietnam. A. heynsi sp. n. resembles A. intermedius (de Man, 1880) and A. thornei (Schneider, 1937). From the former species it differs in the shorter odontostyle and comparatively longer prerectum in female. From A. thornei it differs in the longer body, comparatively shorter pharynx, longer odontostyle and comparatively longer prerectum in female.

Keywords: Vietnam, fresh waterbodies, free-living nematodes, taxonomy, Aquatides heynsi sp.n., A. thornei.

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E.V. Esin, Yu.V. Sorokin

The Effect of Volcanism on Environmental Conditions and Fauna in Rivers of Eastern Kamchatka (by the Example of Watercourses Flowing from Kikhpinych Volcano).

Russian Research Institute of Fisheries and Oceanography, 107140 Moscow, ul. Krasnoselskaya, 17, Russia

e-mail: esinevgeniy@yandex.ru

The effect of local factors, including the input of pyroclastic rocks and juvenile volcanic waters on the structure and abundance of zoobenthos and fish in small watercourses of the eastern volcanic belt of Kamchatka was studied in the summer period. Streams which are subjected to the minimal effect of the volcano are characterized by a high diversity and abundance of benthos, aggregations of juveniles in low-water season and spawning accumulations of fish. Water turbidity, pollution with toxicants, and drying up cause the degradation of communities. The raise of water temperature results in the increase in abundance and biomass of benthos due to some species of chironomids and caddis flies.

Keywords: river communities, habitat, volcanism, rivers, salmon fishes, Kamchatka.

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Ch. Ayuushsuren*, G.Kh. Shcherbina**

Species Composition and Structure of Marozoobenthos in Ulaagchny Khar Lake (Mongolia).

* Irkutsk of State of University, 664033 Irkutsk, ul. Sukhbaatar, 5, Russia

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

e-mail: gregory@ ibiw.yaroslavl.ru

This study assesses the modern state of zoobenthos in Ulaagchny Khar Lake (Western Mongolia). A list of macroinvertebrate species recorded in the lake in 2011–2013 is given. This list includes 44 species from 6 classes. Insects accounted for the largest number of species (33) among which chironomid larvae and chrysalis prevail (28 species). It has been found that chironomid larvae play a leading role in the structure of bottom communities of Ulaagchny Khar Lake both by species richness (63.6% of the total species list) and quantitative development. In 2011–2013 the average biomass of macrozoobenthos in the lake increased several-fold, compared to 1997 and 1998. The lake is β-mesosaprobic waterbody. according to the Pantle–Buck saprobity index.

Keywords: Ulaagchny Khar Lake, fauna, macrozoobenthos, chironomids, crustacean, biomass.

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А.A. Prokin*,**, P.G. Dubov**, S.E. Bolotov*

Forming of Macroinvertebrate Communities in Duck-Weed (Lemnaceae) Aggregations and Artificial Surface-Floating Substrate: Results of Experiment in Natural Conditions.

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

**Voronezh State University, 394006 Voronezh, Universitetskaya sq., 1, Russia

e-mail: prokina@mail.ru

Macroinvertebrate communities formed in isolates with surface-floating duck-weed species Spirodella polyrhiza (L.) Schleid., Lemna minor L., Wolffia arrhiza (L.) Horkel ex Wimm, mixture of these species, and isolate with crushed styrofoam in comparison to the control aggregation of surface-floating plants of lake, were studied during the growing season 2011 on a small forest lake in Usman pinr-forest (Voronezh Oblast, Russia). Seasonal dynamics of Lemnaceae biomass in isolates differed significantly from the control aggregation. Isolation negatively affects the growth of Lemnaceae, but has a positive effect on the development of the macroinvertebrate communities. Statistically significant differences of abundance, biomass and species number in phytophilic communities in experimental isolates among themselves and in comparison with the control was not revealed. Differences in species composition of macroinvertebrate communities of surface-floating substrates are determined largely features of water bodies than the substrate.

Keywords: Lemnaceae, macroinvertebrates, communities, consortia, seasonal dynamics, structure, surface-floating plants, styrofoam.

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D.S. Pavlov*, P.I. Kirillov*, E.A. Kirillova*, F.G. Chereshkevich**

Downstream Migration of Pink Salmon Oncorhynchus gorbuscha (Walbaum) Fry in the Malaya Huzi River (North-Eastern Sakhalin).

*A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071 Moscow, Leninsky Pr., 33, Russia

**“Plavnik” Ltd., 642452 Smirnykh, Sakhalinskaya Oblast, Smirnykhovskiy Area, ul. Zapadnaya, 7, Russia

e-mail: ekirillova@sevin.ru

This study investigates patterns of downstream migration in pink salmon fry were investigated; data on migration time frames, its seasonal and daily dynamics, morphobiological characteristics of fry and total number of migrants are obtained. Behavioral features of fry during the migration both in the main stream and in the estuary of the river are studied. Mechanisms of fry distribution in the flow and its connection with hydraulic structure of the flow and active behavioral elements are revealed. A comparison of two alternative methods for quantitative assessment of downstream migrants has proved the efficiency of both of them.

Keywords: pink salmon, downstream migration, patterns, behaviour, Sakhalin.

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V.V. Kuz’mina*, E.G. Skvortsova**, M.V. Shalygin*, **

Effect of Temperature on Proteinase Activity of Fish Potential Objects.

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

**FSEI Yaroslavl State Agricultural Academy, 150042 Yaroslavl, Tutaevskoye shosse, 58, Russia

e-mail: vkuzmina@ibiw.yaroslavl.ru

The effect of temperature on some characteristics of proteases that function in tissues of food items of fish (sturgeon fingerlings Acipenser ruthenus, anchovy Clupeonella cultriventris, perch Perca fluviatilis and fry of famely Cyprinidae) was investigated. The possibility of a greater total activity of prey proteinases compared to the activity of the enzymes of the gastric and intestine mucosa of consumers hydrolyzing food protein components was confirmed. A significant difference between the temperature dependence of tissue enzymes of fish potential preys, as well as the values ​​of the activation energy (Eact) for the hydrolysis of proteins compared to those of consumer proteases was determined. The findings suggest an important compensatory role of proteases of food items and their great adaptability to functioning at low temperatures. The latter is instrumental in the realization of the induced autolysis at the feeding of ichthyophagous in the winter.

Keywords: sturgeon, anchovy, perch, carp, tissue proteinases, temperature dependence.

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V.I. Martemyanov

Dynamics of the Content of Various Fractions of Water in an Organism of Roach Rutilus rutilus L. in Response to Catching, Transportation and Acclimatization to Laboratory Conditions.

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

e-mail: martem@ibiw.yaroslavl.ru

In the initial period of an acute stress the water content in an organism of roach has sharply decreased within 3–6 h by 2–4.8% by means of free fraction. The defense reactions aimed at decrease and subsequent stabilization of the fraction of free water at higher and lower levels intensified to resist the harmful process in the organism. The fraction of osmotically unresponsive water in an organism of roach at a stress and of an acclimation during 6 day was sustained on low values 2.82±0.03%, then has intermittently increased by 45%, being conserved subsequent at stable high level 4.09±0.03%. It is supposed, that two levels of osmotically unresponsive water in an organism reflect a different physiological state of animals.

Keywords: roach, stress, content of total, free, osmotically unresponsive fraction of water.

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L.G. Korneva, V.V. Solovyeva, E.G. Sakharova

On the distribution of Peridiniopsis kevei Grigor. et Vasas (Dinophyta) in reservoirs of the upper Volga River.

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

e-mail: korneva@ibiw.yaroslavl.ru

During 1989–2011 in the phytoplankton in the Upper Volga reservoirs (Ivankovo, Uglich, Rybinsk and Gorky) a new species of plankton flora dinoflagellates Peridiniopsis kevei Grigor. et Vasas was found. The analysis of successive findings and the distribution of this species in the reservoirs was carried out. It is shown that the beginning of the settlement of P. kevei coincides with that in many reservoirs in Europe.

Keywords: phytoplankton, Peridiniopsis kevei Grigor. et Vasas (Dinophyta), Volga River basin reservoirs.

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N.M. Abdullaeva, M.M. Gabibov, P.A. Asadulaeva, M.G. Ramazanova

The Analysis of Leukogram of Sturgeons (Acipenser baerii (Brandt) and A. gueldenstaedtii (Brandt)), Grown in Artificial Reservoirs.

Daghestan State University, Makhachkala, Republic of Dagestan, 367000 Makhachkala, ul. M. Gadzhieva, 43a, Russia

e-mail: caca1@yandex.ru

The analysis of peripheral blood leukogram of immature sturgeons of both sexes: Siberian sturgeon (Acipenser baerii Brandt) and Russian sturgeon (A. gueldenstaedtii Brandt), grown in artificial pools was studied. It is shown that the predominant forms of leukocytes in both species of immature sturgeons are lymphocytes. They constitute more than 80% of all leukocytes. Monocytes can be found in the Siberian sturgeon. In our opinion, this demonstrates the impact of adverse environmental factors. In Russian sturgeon, on the contrary, basophils, where found which are often observed under deterioration of the conditions of the fish and show an improvement in the body defenses.

Keywords: sturgeon fishes, lymphocytes, monocytes, basophils, leukogram, basin.

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