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Habitats, phenology, food plants of adults and larvae, feeding, mating and egg-laying, the development of the larvae and pupae, and the natural enemies of Lixus paraplecticus L., L. elegantulus Boh., L. angustus Hbst., L. albomarginatus Boh., L. linnei Faust, and L. cylindrus F. were studied. Data on the geographic distribution, conservation, and economic importance of these species are given. © 2013 Pleiades Publishing, Ltd. Source

Connections between nesting areas of the Caspian Gull Larus cachinnans in the Northwest coast of the Azov Sea and the rest of Europe were examined by a long-term ringing program (1988-2012). The author analyzed the spatial distribution of individuals according to age (young, immature, adults) during different seasons. Directions and flight distances were determined and different types of dispersal (intra-continental, within the territory of Ukraine, within the nesting area) were specified. For perennial large nesting settlements of the Caspian gulls in the Northwest coast of the Azov Sea, the following features were determined: high degree of phylopatry in adults, the wide scope of migration after nesting and dispersion of young birds, formation of new temporary colonies by virtue of immature birds. The average movement of birds towards their colonies, during the spring was 1033 km (range 111-1900). During the post-nesting season, adult birds were found within a radius of 30 km around their colonies. In June the average displacement distance of birds of different age groups, from their colonies was 130.14 km (range 7.5-1900). In July and August, increased to 416.17 km (range 7.5-2025). In autumn, birds were found within an average distance of 284 km (range 7.5-2025) from their natal area, moving along the coast, mainly in a southwestern and western direction. They were also present in large numbers in landfills and agricultural land. Some first year birds reached the territories of Denmark, Germany, Poland and Hungary. In winter, the average displacement distance was 850 km (range 7.5-2172). The birds usually moved along the Black Sea coast of Ukraine flying to the territories of Eastern European countries. © 2015 CISO - Centro Italiano Studi Ornitologici. Source

Volovnik S.V.,Melitopol State Pedagogical University
Zoologicheskii Zhurnal

Galls of six species of Lixinae weevils from Ukrainian steppes are described. The gallogenesis in Larinus species is doubtful. Sometimes, one gall is a place for joint inhabitation of different weevil species. The adaptive sense of the gallogenesis for Lixinae is discussed. Source

Volovnik S.V.,Melitopol State Pedagogical University
Entomological Review

Galls induced by six species of Lixinae weevils from Ukrainian steppes are described. The gall formation by Larinus species is doubtful. One gall may in some cases be jointly occupied by different weevil species. The adaptive significance of gall formation in Lixinae is discussed. © 2010 Pleiades Publishing, Ltd. Source

Shekhovtseva O.G.,Melitopol State Pedagogical University | Mal'tseva I.A.,Melitopol State Pedagogical University
Eurasian Soil Science

Physicochemical and biological properties of urbanized soils in the city of Mariupol have been considered in comparison with the background soils. The parametrical characteristics (abundance and biomass) of soil algal groups, the content of humus, the reaction of soil solution, the content of heavy metals, and the particle size distributions of soils under different anthropogenic impacts have been assessed. The physicochemical properties of soils developing under urboecosystem conditions affect the number of structure-forming species, biomass, and proportions of soil algae. According to the particle size distribution, urban soils are classified among the medium and heavy loamy soils with the predominance of the clay and coarse silt fractions. The fractions of physical clay and clay are of highest importance for the existence of algae. The accumulation of heavy metals in the surface horizons of soils can stimulate or inhibit the development of algae depending on the metal concentration. © 2015, Pleiades Publishing, Ltd. Source

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