New data on the distribution of the tropical bed bug Cimex hemipterusand the western conifer seed bug Leptoglossus occidentalis (Heteroptera: Cimicidae, Coreidae) in the Europaean part of Russia - Golub  V.B.,  Aksenenko  E.V.,  Soboleva  V.A.,   Kornev  I.I. - Two 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 the Voronezh Oblast (Voronezh city) 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 urban conditions in the forest-steppe zone of the European part of Russia, but it was not found in natural ecosystems there.

The features of macrophyte invasions in the aquatic ecosystems of middle Dnipro region (Ukraine) - Zub  L.M.,  Prokopuk M.S. -The article presents the results of the studies of the features of alien macrophyte species invasions in the hydro-network of the Middle Dnipro Region. These alien species have become a significant component of the overgrown zone of these aquatic ecosystems at present. Regional peculiarities of ecology, biotopic affiliation and ecological coenotic strategy of alien species have been established.

Features of distribution for alien species of macrozoobenthos in the flooded mouths of reservoirs (by way of example of waterbodies of the middle and lower Volga) - Kurina  E.M. -The research presents an 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. It was revealed that only the most invasively active species (representatives of amphipods, mysids, and bivalve mollusks) successfully settle in the bays. Unlike the reservoirs of the Volga cascade, in the bays there are no consortial interactions between alien species and stable cenotic complexes are not formed.

The role of thermal adaptation in the distribution of the tomato pest Tuta absoluta - Perevertin  K.A.,  Rawashdah  Sh.,  Zaetc  V.G.,  Kozlov  D.N.,  Vasilyeva  N.A.,  Vasiliev  T.A. -The relatively recent (2006) transatlantic introduction of the Tuta absoluta tomato moth from South America into the Old World is considered. Based on the use of the thermal and adaptive mathematical model of ontogenesis of T. absoluta, it was made a conclusion about the threat of this pest species not only for sheltered soils, but also for plantations of open soils (a possibility of development of at least two generations for the Moscow Oblast and at least four ones for the Krasnodar Krai).

Ecological differentiation between invasive and native species of the genus Epilobium in riparian ecosystems is associated with plant functional traits - Ronzhina  D.A.-The biomass allocation, leaf traits and CO₂ assimilation rate of invasive Epilobium adenocaulon Hausskn. and Epilobium pseudorubescens A.K. Skvortsov and native Epilobium palustre L. were studied in the Middle Urals. E. adenocaulon had a maximum plant height, and E. palustre had the largest diameter of a leaf canopy. E. pseudorubescens was the most compact in linear sizes among the species and differed from others by the smallest biomass. The character of biomass allocation of invasive E. adenocaulon and E. pseudorubescens corresponded to plants with ruderal strategy, which was expressed in a low root part and a large generative organs part. Native E. palustre had a large root and leaf mass ratio and a small generative organs mass ratio that indicated the stress-tolerant properties of this species. In addition to the biomass allocation, E. palustre differed from invasive species by large (on average 30%) chlorophyll content and 1.2 times less carotenoid content, as well as a low CO₂ assimilation rate per chlorophyll unit. E. adenocaulon had thick leaves with a high leaf mass per area (LMA) and the highest rate of CO₂ uptake per unit leaf area which exceeded the value of this parameter in species E. palustre and E. pseudorubescens with thin leaves with a smaller LMA by 1.8 and 1.6 times respectively. The negative correlation between the rate of CO₂ assimilation per dry weight unit and leaf density (LD) (r= –0.78, p<0.001) determined the maximum value of the photosynthetic rate in E. pseudorubescens, which had the least dense leaves. Complex analysis of the plant functional traits showed that the studied species of genus Epilobium exhibited different ecological strategies: E. palustre – S, E. adenocaulon – CR, E. pseudorubescens – R. It has been concluded that, possessing ecological properties other than native E. palustre, invasive species do not directly affect the native species.

Invasien of the polychaeta Laonome eprovala Bick & Bastrop, 2018 (Sabellidae, Polychaeta) into the estuary of the Luga and Khabolovka rivers (Luga bay, Gulf of Finland)  - Tamulyonis  A.Yu.,  Gagaev  S.Yu.,  Startanenko  E.A.,  Zuyev  Yu.A., Potin  V.V.-In September 2018 polychaeta worms of the family Sabellidae – Laonome xeprovala Bick & Bastrop, 2018 - were found in the Luga bay (Gulf of Finland, the Baltic Sea). This species has 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 of this species in investigated area.

Distribution and density of populations of Dreissena polymorpha (Pallas, 1771) in the peripheral part of the range - Travina  O.V.,  Bespalaya  Y.V.,  Aksenova  O.V.,  Shevchenko  A.R.,  Sokolova  S.E.,  Kosheleva  A.E.,  Ovchinnikov  D.B.-In 2015–2017, the distribution of freshwater bivalve Dreissena polymorpha in the basin of the Northern Dvina River was studied. 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, P = 0.01), its average value was 232.9 ind./m² (from 0 to 4023.8 ind./ m²). The influence of various environmental factors on the distribution and abundance of zebra mussel in watercourses is discussed

<<< To Contents

Download .pdf

Tendencies of invasion of alien zoobenthic species into the Black sea - Shalovenkov   N.N.- The published data about alien species in zoobenthos of the Black Sea are generalized for the last hundred years of research. The list of alien species is done, 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 the period of climatic changes in the region. High reliable statistical relationship is revealed between the inter-ten year variability of the number of alien species and the deviations of the summer water temperature from the average multi-year (100 years) one.