Round table: The wave process of distribution of invasive insect species in the Volga region in the XXI century

Abstract

In recent decades have been noted the penetration and reproduction of several invasive and adventive species in Russia and in the Volga region (horse-chestnut leaf miner – Cameraria ohridella, lime leaf miner – Phyllonorycter issikii, Poplar moth – Phyllonorycter populifoliella, potato tuber moth – Phthorimaea operculella, buckthorn hawk moth – Hyles hippophaes, mulberry moth – Hyphantria cunea, emerald ash borer – Agrilus planipennis, harlequin ladybird – Harmonia axyridis, elm zigzag sawfly – Aproceros leucopoda, California scale – Diaspidiotus perniciosus and some other. Invasion species of these group of insects in recent decades became the most important pests of urban plantations, that leads to impairment of plantings and reduces their aesthetic appearance. Processes of front settlement distribution of the territory by populations of these species are observed in many areas of Russia. This distribution has a wave character and has the form of a continuous wave. The nature of the spreading population wave of invasive species has a number of negative consequences. These include the processes of introduction of "alien" species and their "embedding" in the food chain and competitive relations existing in entomocomplexes on the community. The examination of the spatio-temporal behavior of population wave dynamics systems shows that the development of the system, which includes increasing in the population size and its spread in space have complex and multi-stage pattern.

Speaker

Vasilii Anikin
Chernyshevsky Saratov State University
Russia

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