Abstract The planktonic species Radiolaria of Arachnocorys circumtexta Haeckel, 1860 (Radiolaria, class Nasseillaria, family Lophophaenidae Haeckel, emend. Petrushevskaya, 1971) in the epiphyton of the brown alga Cystoseira barbata (Stackhouse) C.A. Agardh in August 2002 in Martynov Bay (Sevastopol, Crimea) at a depth of 2.5 m at a water temperature of 24.4°C and a salinity of 18‰ was the first time

Abstract Tautoneura polymitusa Oh & Jung, 2016 (Hemiptera: Auchenorrhyncha: Cicadellidae), a new genus and species of leafhopper for Eastern Europe, was registered in 2019 on Siberian elm (Ulmus pumila L.) in Donetsk and Lugansk oblasts of Ukraine and Rostov Region of Russia. The leafhoppers were recorded in urban plantings during the whole vegetation period, from late March to early November. The

Abstract The invasive weevil Aulacobaris cuprirostris (Fabricius, 1787) was detected for the first time in Russia, in the Adler district of the city of Sochi. The native range of this species is in North Africa, the Mediterranean region, Western Europe, Southern Europe, and the southern part of Central Europe. We found three specimens of this species more than 1100 km apart from its previously known

Abstract The scarlet sage, Salvia coccinea, was first detected in Northern Province, South Africa in 1905, in what is now Limpopo Province. However, its presence and suitability in South Africa remains undocumented. We conducted vegetation surveys to determine the actual distribution and to incorporate species distribution modelling in order to determine the potential distribution of this species.

Abstract Amphipods play the leading role among alien species in Lake Ladoga. In particular, the Baikal species Micruropus possolskii Sowinsky, 1915 is becoming increasingly important here. The purpose of this paper is to present updated data on the appearance of M. possolskii in Lake Ladoga and on the temporal and spatial dynamics of its development and expansion in this water body. The species was

Abstract The results of floristic studies on plankton in the Barents Sea performed from 2007 to 2018 are discussed in the paper. The findings of 16 species new to the indigenous flora were documented and their distribution in the Barents Sea and adjacent waters was analyzed. We also calculated statistical indicators (indices) that characterize the regularity and quantitative expression of their presence

Abstract This paper presents recent data on the population of the anadromous vimba bream (Vimba vimba vimba), introduced in the Volga basin. After penetration to the downstream section of the Volga River from the Volgograd Reservoir, vimba bream can be found throughout the entire unregulated stretch downstream of the Volga Hydroelectric Station. Observations show that the population size changes naturally

Abstract Here we report the results of our own survey and literary published data on the ectoparasite fauna and pathogens of the alien bat species, the Kuhl’s pipistrelle Pipistrellus kuhlii (Kuhl, 1817) (Chiroptera: Vespertilionidae). This bat is a host of 36 species of parasitic mites, ticks and insects (including accidental findings) and 13 species of pathogens (protozoa, bacteria, viruses). The

Abstract The parasite fauna of the monkey goby Neogobius fluviatilis has been studied from the lower part of the Saratov Reservoir. Six species of parasites are recorded, for one of which (the goby-specific plerocercoid Triaenophorus crassus) the monkey goby is recorded as an additional host for the first time. The 100% invasion of the goby by the alien fluke Nicolla skrjabini makes it possible to

Abstract Wild boar is an ecological engineer whose feeding activity can significantly influence the structure and composition of plant communities. The purpose of this study was to analyze the restoration of plant cover on wild boar rootings in areas recently colonized by wild boar in the north of Western Siberia compared to other parts of its range. The data were collected in four types of plant communities

Abstract The review considers various aspects of remediation of sturgeons in the Baltic Sea including the research history of Baltic sturgeon taxonomic status, diagnostic traits of Acipenser sturio and A. охуrinсhus, historical changes in species composition of the Baltic Sea sturgeons, and history of A. охуrinсhus reintroduction to the Baltic Sea basin from Canadian rivers. The examples of intentional

Abstract Predicting establishment and invasiveness risks of non-native (NN) species are fundamental aspects in the development of preventing measures and management plans. The main aim of the present study was to identify potential establishment rate and invasive of NN fish species using the Freshwater Fish Invasiveness Screening Kit (FISK) and climate matching model (CLIMATCH) respectively. The Anzali

Abstract The results of experiments on natural distribution of seeds of the giant hogweed (Heracleum sosnowskyi Manden.) in the winter period are presented. It was found that viable seeds are preserved on the umbrellas of this alien plant in winter. Falling of single seeds during the winter period is not much different from falling of seeds in the summer–autumn period. It was shown that seeds under

Abstract The current geographical distribution of alien terrapins is poorly understood because these reptiles are difficult to detect in large natural water bodies, as they don’t vocalize, have cryptic coloration, and are typically not numerous in temperate climate. The present study tests the previously unconfirmed oral reports suggesting the presence of terrapins in several urban water bodies in

Abstract During a study of fauna associated with a shallow-water Zostera (Zosterella) noltei meadow from the southern part of the Romanian Black Sea coast, in August 2015, a sabellid polychaete identified as Amphiglena mediterranea was found. This represents a new record for the Romanian coast of the Black Sea. Three individuals were collected from muddy fine sand at 1.5 m depth at Mangalia, at salinity

Abstract For the first time, the actual material collected within the territory of the city of Gomel is given for the alien Eastern Palearctic species of carpet beetles Attagenus gobicola Frivaldszky, 1892 (Coleoptera: Dermestidae) new to the fauna of the Republic of Belarus. This species is a dangerous pest of keratin-containing materials, zoological collections, and grain products, the native range

Abstract Ninety-six registrations of great white egret from ten districts of Novgorod Region in 2016–2018 were analyzed. The birds were seen from single individuals up to 170 birds in one flock. The main areas of registrations of this species are the surroundings of the city of Novgorod and Lake Ilmen. The birds were seen on the territory from February 25 to October 31. We did not get any documented

Abstract Bivalve mollusk Anadara kagoshimensis is classified among the top 100 dangerous invasive species of the Mediterranean and Black seas. Using as an example the colonization by Anadara of the Kazachya (Cossack) Bay (Crimea, the Black Sea), the article identifies and discusses biocenotic relations of the mollusk with sea bottom substrates, epibionts, potential environmental competitors, and predator

Abstract The morphological and biological characteristics of the striped seabream Lithognathus mormyrus of the Black Sea were investigated. The conclusion about the naturalization of this species in the Black Sea as a result of the natural process of mediterranization was made on the basis of numerous finds of adult individuals and juveniles of this species.

Abstract The Progress Station is the largest Russian Antarctic station. The anthropogenic impact on primary soils in the area of this station is reflected in the chemical structure of soils and structure of microbial communities. The article shows a multiple increase in the number of microorganisms (especially microscopic fungi) in contaminated soils around the Progress Station. The anthropogenic impact

Abstract Thladiantha dubia Bunge is an East Asian species, a perennial herbaceous climbing vine, which naturally grows in the Russian Far East, in Northeast China, and on the Korean Peninsula. It is a secondary species in Central Europe, North America, South America (Ecuador), and Japan. Th. dubia is not an invasive plant for the majority of European countries. Th. dubia is bred in the European part

Abstract The reasons for the broad distribution of Erigeron annuus in Central Russia (its biology (habitat, seed productivity, seed distribution) and its ability to exert allelopathic influence) are discussed. The following indicators were used in the experiments to assess the effect of Erigeron annuus on other species: seed germination, development rate, and length of the hypocotyl. The seeds of Erigeron

Abstract For the first time, information about the entire parasitofauna of the the so-iuy mullet Planiliza haematocheila has been summarized on the basis of published and personal data. Features of its similarities and differences in the native Pacific region and in the areas of invasion, the Black and Azov Seas, have been identified. Potentially pathogenic parasites for the host’s health have been

Abstract The issue of the formation of the compound composition of low-molecular-weight organic compounds in aquatic macrophytes, which make up their low-molecular-weight metabolism, has hardly been studied when introducing them into new habitats. The study aims to compare the component composition of the low-molecular-weight metabolome of sago pondweed (Potamogeton pectinatus L.) on the low-molecular-weight

Abstract Data on the record of a new prawn species for the estuarine ecosystems of the Western Caspian Sea, Macrobrachium nipponense (De Haan, 1849) (Decapoda, Crustacea, Palaemoninae), are given. Several specimens of oriental river prawn were found in the lower reaches of the Terek River, 24 km upstream of the mouth. To determine the taxonomic status of this prawn, we carried out the DNA barcoding

Abstract Currently, the habitats of Cystoseira in the Sea of Azov and Kerch Strait are concentrated in the southern part of the Gulf of Taman on the eastern part of Tuzla, Cape Achillion, and the Kerch Peninsula—between Cape Khroni and Kazantip. It is shown that the main vector of Cystoseira settlement is directed to the southwestern part of the Sea of Azov, which is facilitated by the compensatory

Abstract The shell variability of the common river snail (Viviparus viviparus (L., 1758)), a species alien to Western Siberia, was studied using the methods of discriminant and dispersion analysis for the population of the Novosibirsk Reservoir. In different parts of the reservoir, the subpopulations of common river snail are formed, which differ in the shell proportions. A statistically significant

AbstractThe data of 3-year observations of the abundance dynamics of microplanktonic fraction of Pseudodiaptomus marinus—a new alien copepod for the Black Sea—are presented. Seasonally, the first juvenile stages of the species appeared in the Sevastopol coastal waters in September. The maximum values were reached at different times: from the end of September to the end of November. Then the abundance

AbstractTwo alien harmful species, the tropical bed bug Cimex hemipterus (Fabricius, 1803) (Cimicidae) and the western conifer seed bug Leptoglossus occidentalis Heidemann, 1910 (Coreidae), are recorded from Voronezh oblast (city of Voronezh) for the first time. A key for the identification of C. hemipterus and the cosmopolitan bed bug C. lectularius Linnaeus, 1758 is given. L. occidentalis lives in

AbstractPomacea species, also known as apple snails, are highly invasive freshwater organisms now occurring in Central and North America, Asia and Europe. Species misidentification within the genus has hampered efforts to manage their spread and impact, and thus Pomacea maculata have received much less attention that P. canaliculata. Species Distribution Models are well suited for a global screening

AbstractInvasive Alien Species are non-native plant species that displace native species and pose adverse effects to environment, ecosystem, economy and human health by diminishing the growth of native plants and also possess higher stress tolerance. In our present study four invasive alien species, namely Lantana camara, Parthenium hysterophorous, Ricinus communis and Ageratum conyzoides, were studied

AbstractThe biomass allocation, leaf traits, and the CO2 assimilation rate in invasive Epilobium adenocaulon Hausskn and E. pseudorubescens A.K. Skvortsov and indigenous E. palustre L. were studied in the Middle Urals. E. adenocaulon had the maximum height, and E. palustre had the largest leaf canopy diameter. The most compact in linear sizes species E. pseudorubescens was characterized by the lowest

AbstractIn recent decades, owing to the intensification of invasions of marine aquatic organisms in the Black Sea, the need has arisen for their monitoring in order to predict the consequences for local species and ecosystems. As a rule, most of the invading species are recorded in the recipient area owing to the findings of adult specimens. However, the findings of larval stages may indirectly indicate

AbstractIn September 2018, polychaeta worms of the family Sabellidae—Laonome xeprovala Bick & Bastrop, 2018—were found in the Luga Bay (Gulf of Finland, Baltic Sea). This species was previously been recorded in Europe, but the eastern most point of its discovery was the Gulf of Wislin—the southeastern region of the Baltic Sea. The article presents the main morphological description and distribution

AbstractThe relatively recent (2006) transatlantic invasion of the tomato moth Tuta absoluta from South America into the Old World is considered. On the basis of the use of the thermal and adaptive mathematical model of ontogenesis of T. absoluta, a conclusion is made about the threat of this pest species not only for sheltered soils but also for plantations of open soils (a possibility of development

AbstractIn 2015–2017, the distribution of the freshwater bivalve Dreissena polymorpha was studied in the basin of the Northern Dvina River. This study provides the first record of the populations of D. polymorpha in the Yuras, Lyavlya, and Solombalka rivers. The density of the studied colonies of D. polymorpha was lower in comparison with populations in other parts of the range (Mann–Whitney U test

AbstractThe published data on alien species in zoobenthos of the Black Sea are generalized for the last hundred years of research. The list of alien species is prepared; 61 zoobenthic alien species are registered. The long-term variability of the invasions of alien zoobenthic species into the sea is analyzed. The intensification of invasion of the zoobenthic species into the Black Sea occurs during

AbstractAn analysis of the distribution patterns of alien species of macrozoobenthos in the Cheremshansky, Usinsky and Yeruslansky bays of the reservoirs of the Middle and Lower Volga basins is presented. It is revealed that only the most invasively active species (representatives of amphipods, mysids, and bivalve mollusks) successfully settled in the bays. Unlike the reservoirs of the Volga cascade

AbstractThe article presents the results of the studies of the features of alien macrophyte species invasions in the hydrographic network of the Middle Dnieper region. At present, these alien species have become a significant component of the overgrown zone in the aquatic ecosystems. Regional peculiarities of ecology, biotopic affiliation, and ecological coenotic strategy of alien species have been

AbstractThe paper provides information on the distribution of coltsfoot (Tussilago farfara L.) in the south of Primorsky Territory (the Russian Far East). It is established that, in the study area, the species is massively found along the roadsides and inhabits anthropogenic landscapes (gardens, abandoned fields, wastelands in cities and towns), and a single case of introduction into the forest biocenosis

AbstractFor the first time, two alien species of beetles, obligate synanthropes, namely, Attagenus smirnovi Zhantiev, 1973 (Dermestidae) and Lasioderma serricorne (Fabricius, 1792) (Ptinidae), were revealed in anthills (genus Formica). These records widen the spectrum of biotopes inhabited by these species outside their native ranges and specify their adaptive abilities under the movement of invaders

AbstractA review on ecology, biology, and distribution of pea weevil and its main food plant, Pisum sativum, and the influence of abiotic, biotic and anthropogenic factors on the invasive process and phytosanitary condition of pea crops in Russia is presented. The main stages and areas of cultivation of pea and invasion of pea weevil from their primary habitat in Western Asia are traced. The factors

AbstractThe aim of the study is to assess concentrations of compounds of biogenic elements (nitrates, nitrites, ammonium, and phosphates) and to analyze their distribution in water bodies and watercourses of the forest-steppe, where beavers were reintroduced recently. The study was carried out in the State Nature Reserve Privolzhskaya Lesostep’ (Penza oblast). We studied beaver ponds, oxbows inhabited

AbstractThe frost resistance of Sosnowsky’s hogweed plants (Heracleum sosnowsky Manden.) has been evaluated under laboratory and field conditions. The death of seedlings and adult plants observed within a temperature range from –6 to –12°C indicates low frost tolerance of the species. A snow cover provides a stable soil temperature (no less than –3°С) at the depth of renewal bud location and, therefore

AbstractThe analysis of the distribution of nemoral diurnal butterflies of the Apatura genus (Lepidoptera, Nymphalidae) and weather conditions in the Transbaikal region has revealed relationships which shed light on the underlying causes of penetration of these butterflies far inside Siberia in the last decades. For all Apatura species, the temperature is the factor which determines their normal habitation

AbstractThe main limiting factors for living of Ambrosia artemisiifolia L. in the Caucasus are the incoming solar energy flux in January (5250–5950 kJ m–2 day–1) and slope (0°–17.5°). The limiting factors for A. trifida L. are wind speed in February (2–2.4 m/s) and the incoming solar energy flux in December (4400–4800 kJ m–2 day–1). In accordance with the predicted trends of climate change by 2050

AbstractNaturalization of woody lianas poses a great danger to the ravine and floodplain forests of Rostov oblast. Therefore, the aim of the work was to study morphology, ecological and biological properties, and the invasive process of Partenocissus inserta. Studies were carried out in the Botanical Garden of the Southern Federal University and in the west of Rostov oblast in a floodplain oak forest

AbstractA review of original and published data on invasions of sibling species of Microtus from the group “arvalis” (East European vole, M. rossiaemeridionalis; common vole, M. arvalis; and Altai vole, M. obscurus) is given. Two stages of invasions differing in duration are established. These stages defined the formation of the modern ranges of these species and had an influence on evolutionary processes

AbstractThe first data on the parasites of the great cormorant (Phalacrocorax carbo) from the coast of Lake Ladoga are obtained. The parasite fauna of the great cormorant consists of five species: Cestoda (2 species), Trematoda (2 species), and Nematoda (1 species). Four species (Petasiger phalacrocoracis (Yamaguti, 1939), Petasiger radiatus (Dujardin, 1845), Paradilepis scolecina (Rudolphi, 1819)

AbstractPredatory gastropod mollusk Rapana venosa (Valenciennes, 1846) was brought from the Sea of Japan to the Black Sea; it has spread in lots of areas of the World Ocean. The article presents a description of the karyotype in embryonic cells. There are 70 chromosomes in rapa whelk karyotype belonging to the following three morphological groups: metacentric (32), submetacentric (36), and subtelocentric

AbstractThe work examined the influence of experimental anoxia on the content and qualitative composition of carotenoids in the tissues of the bivalve invader Anadara kagoshimensis (Tokunaga, 1906) under experimental conditions. The oxygen content in the water was reduced by nitrogen sparging for five hours. The exposure lasted three days. Tissue samples (gills, foot, and hepatopancreas) were collected

AbstractInvasive species have to overcome the biotic resistance of the environment for successful distribution in the secondary range; this resistance can be effectively made by unspecialized phytophages. We carried out a series of laboratory experiments on studying the ability of generalist phytophages, such as terrestrial mollusks, to feed on invasive goldenrod species (Solidago canadensis L. and S

AbstractThe American rotifer Kellicottia bostoniensis (Rousselet, 1908) has been found in the Vygozersky Reservoir, which is currently its northernmost habitat in Russia. The Vygozersky Reservoir is located at 63° N and belongs to the White Sea catchment basin. It is a part of the White Sea–Baltic Canal. The first single individual of K. bostoniensis was noted in July 2007. In the summer of 2011, the

AbstractThe data on the finding of Eustrongylides excisus in the Rybinsk Reservoir (Yaroslavl oblast, Russia) are presented. Larvae-IV were recorded in 2015 in ruff. The appearance of this nematode in the reservoir is associated with the expansion of the range of cormorant, its main definitive host. E. excisus is one more parasite species exhibiting northward expansion in the Volga Basin.

AbstractPassive downstream migration of juvenile fish associated with the invasive water hyacinth (Eichhornia crassipes) was investigated in the delta of the Mekong River. The behavioral program of juveniles aimed at leaving the coastal attached vegetation and entering the transit flow for migration was the same in the case with drifting water hyacinth. In general, the passive downstream migration

AbstractThe hybrid origin of the Bidens × decipiens species, which was earlier ascribed to the North American alien species B. connata, was confirmed by analyzing the nucleotide sequences of the ITS nuclear site. The name “B. connata” is indicated as invalid for a taxon that does not grow in North America. Earlier, we tested the hypothesis of hybrid origin of B. × decipiens using ISSR analysis and

AbstractThe paper provides data on the invasion of alien species belonging to the Brassicaceae Burnett family into the plant communities of saline ecotopes in Southeastern Europe, including the data on the extent of their participation in the formation of cenoses, their distribution, and ecological characteristics of the species habitats. Only three representatives of the family were described in the

AbstractNew data on the structure of seedlings, juvenile, immature, virginal, and generative individuals of invasive species Ambrosia artemisiifolia L. and A. trifida L. and the time of their transition to different age stages in Moscow and Moscow oblast have been obtained. These data can help in recognition of plants at different stages of their ontogenesis in nature and in their timely control. It

AbstractZooplankton was studied in August 2015–2017 in eight reservoirs of the Volga River, in an unregulated part of the river between the cities of Volgograd and Astrakhan, and in three reservoirs of the Kama River. The Ponto-Caspian species were recorded in the Volga River downstream of the city of Kazan (south of 55°32′ N) and in the Kama River from the mouth to the upper reaches of the Kama Reservoir

AbstractAlien species of amphipods were registered in Belarus in the early 2000s. Over many years of observing the structure of the riverine macrozoobenthos community, a decrease in the frequency of occurrence of indigenous amphipod species in the southern part of Belarus was noted. In order to find an explanation of the current process, a laboratory experiment was conducted to study the predatory