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Article
Macrozoobenthos of the Mekong River Delta under Conditions of Extremely Low Water
In 2019, due to changes in the hydrograph caused by the construction of dams upstream, the Mekong River Basin experienced a decline in delta water level. In this year, macrozoobenthos communities of the Bassac...
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Article
Features of the Conditions for the Development of Hydrobionts in the Mouth Areas of Tributaries of Lowland Reservoirs
The main factor determining the uniqueness of the mouth areas of reservoir tributaries is the re-gulation of the receiver level. Mouth areas and reservoirs in general are anthropogenically stabilized ecosystem...
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Article
Water Mites (Acariformes, Hydrachnidia) in the Mouth Zone of a Tributary of a Plain Reservoir
In a small tributary of a plain reservoir and its mouth area, 91 species of water mites from 17 families were registered. The families Pionidae (17 species) and Arrenuridae (16 species) were the most represent...
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Article
Macroinvertebrates of Thickets of Higher Aquatic Plants in the Mouth Zone of a Tributary of a Plain Reservoir
In the phytophilic communities of the mouth zone of a tributary, 463 species of macroinvertebrates were found, of which 22% belonged to homotopic hydrobionts and 78% are heterotopes. The most original communit...
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Article
The First Data on the Diving Beetles from the Coastal Tundra of the Yugorsky Peninsula, Polar Russia
Diving beetles were collected in July 2018 in the most typical water bodies and other habitats in the vicinity of Amderma (the Kara Sea coast, northern Yugorsky Peninsula). The revealed fauna of Dytiscidae com...
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Article
New Records of Sphaerius acaroides (Coleoptera, Sphaeriusidae) from Russia Extend the Known Distribution of Myxophaga to Siberia
А beetle species Sphaerius acaroides, Waltl, 1838, widespread in Europe, Caucasus region and Iran, is here recorded from Tatarstan Republic and Tyumen Oblast (Russia) for the first time. The Tyumen record is the ...
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Article
Microbialites of the Soda-Saline Laguna de Los Cisnes (Isla Grande, Tierra del Fuego, Chile)
Modern microbialites formed in soda-saline and soda lakes are of interest as model systems for studying geobiological interactions in the Precambrian, when such geochemical settings were widespread. This work ...
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Article
The First Record of Alien Species Limnodrilus maumeensis Brinkhurst et Cook, 1966 (Oligochaeta, Tubificidae) from Russia
Nearctic species Limnodrilus maumeensis Brinkhurst et Cook, 1966 (Oligochaeta, Tubificidae) recorded in the Russia for the first time from the Don River near Rostov-on-Don City. Variations of penis sheath of sexu...
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Article
Structure of Macrozoobenthos in Floodplain Lakes under Conditions of Different Durations of Spring Flooding
Changes in the structural characteristics of macrozoobenthos have been studied in six floodplain lakes in the Khoperskiy Nature Reserve in years with different durations of spring flooding. In a dry year, the ...
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Article
Species of the Subgenus Lumetus Zaitzev (Coleoptera, Hydrophilidae: Enochrus Thomson) of the Fauna of Russia and Adjacent Countries
Eleven species of the subgenus Lumetus Zaitzev, 1908 of the genus Enochrus Thomson, 1859 are recorded from Russia and adjacent countries. Enochrus ater (Kuwert, 1888) is recorded for the first time from Ukraine a...
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Article
Morphological and Genetic Traits of the First Invasive Population of the Asiatic Clam Corbicula fluminea (O.F. Müller, 1774) Naturalized in the Volga River Basin
Variability of the first invasive population of C. fluminea (O.F. Müller, 1774) from the Volga basin is studied using the mitochondrial cytochrome c oxidase subunit I gene fragment (COI mtDNA), and morphological ...
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Article
The Khasurty Fossil Insect Lagerstätte
The Khasurty locality (Lower Cretaceous of Transbaikalia, Russia) is one of the largest fossil insect sites in the region. Over the entire period of study, more than 6000 insect imprints have been collected he...
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Article
Mercury Content in Water Beetles (Coleoptera: Dytiscidae, Hydrophilidae) of Different Size Classes
The content of mercury in adult water beetles is studied in beaver ponds located in the Polist-Lovat Swamp System (Novgorod oblast). A total of 201 individuals of nine species of the family Dytiscidae and one ...
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Article
Zooplankton in the Lake Tana Shore Zone (Ethiopia) at the Beginning of the Dry Season
At the beginning of the dry season, immediately after the end of the rainy season, estimations of zooplankton abundance have been carried out in three types of shore areas of Lake Tana (Ethiopia): (1) open wat...
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Article
Qualitative Composition and Quantitative Characteristics of Zooplankton in the Littoral Zone of Lake Tana (Ethiopia) at the End of the Dry Season
Studies on zooplankton in the littoral zone of Bahir Dar Gulf of Lake Tana (Ethiopia) carried out in March 2018 have revealed its high qualitative characteristics and species richness (Rotifera (61 species) Co...
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Article
Beetles (Coleoptera) in Stagnant Water Bodies of the Middle Part of the Gydan Peninsula
The fauna of water beetles of the main types of stagnant water bodies in the middle part of the Gydan Peninsula was studied. Altogether, 20 species were found, with 2 to 16 species recorded in diff erent types...
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Article
Description of a Larva of Kargalarva permosialis gen. et sp. nov. (Coleoptera: Schizophoromorpha) from the Kargala Fossil Site
An aquatic larva of the holometabolan species Kargalarva permosialis gen. et sp. nov. is described from the Upper Permian of the Kargala outcrop (Orenburg Oblast, Russia). This larva was formerly known as Permosi...
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Article
The Position of the Palaeozoic Genus Tunguskagyrus Yan, Beutel et Lawrence in the Family Triaplidae sensu n. (Coleoptera, Archostemata: Schizophoroidea)
Re-examination of the late Permian Tunguskagyrus planus Yan, Beutel et Lawrence, 2018 has shown that it does not belong to the family Gyrinidae (Adephaga) but should be placed in the family Triaplidae sensu n. (A...
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Article
Initial Stage of Macrozoobenthos Formation in Reservoirs of Western Mongolia
Data on the initial stage of macrozoobenthos formation in the Taishir and Durgun reservoirs in western Mongolia in 2010–2015 have been generalized. A taxonomic list of macrozoobenthos is presented; 15 species ...
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Article
Interannual Variations in Species Richness and Quantitative Parameters of Macrozoobenthos in Floodplain Lakes of the Khoper Nature Reserve
Interannual variations in species richness and quantitative parameters of macrozoobenthos in floodplain lakes of the Khoper Nature Reserve have been studied to reveal their dependence on flood regime and overg...
