Охридский минер Cameraria ohridella Deschka&Dimic: особенности инвазионных очагов и перспективы биологического контроля численности

Abstract

The ecological mechanisms of one of the most dynamic biological invasions such as a colonization of artificial plantations of horse chestnut Aesculus hippocastanum L. by the ohrid miner, or chestnut miner Cameraria ohridella Deschka & Dimic (Lepidoptera, Gracillariidae) have been analyzed. The materials of publications on the bioecological features of C. ohridella in the conditions of native and invasive areas are summarized. The survey results of phytophage invasive foci in plantations of Moscow are presented. Particular attention is paid to the change in population characteristics (density, level of damage by entomophages) in connection with the biotopic conditions of horse chestnut plantations and meteorological features of the growing season. Measures to reduce the harm by C. ohridella by means of a biological control are considered. The information on the influence of various biotic factors on the phytophage is analyzed. Particular attention is paid to parasitoids as a means of the classical biological method. A suitable agent among parasitoids from natural foci of the miner has not yet been identified, and the level of local parasitism in European invasive foci is low. The perspective method of enhancing local parasitism through the accumulation and controlled release of parasitoids from leaf litter is substantiated. This technique makes it possible to synchronize the appearance of parasitoids with the phenology of the pest. This technology has already been tested by European researchers. Prospects are substantiated, the technology of seasonal colonization of parasits, which can be massively bred in biological laboratories such as parasitoids of Trichogramma (Hymenoptera, Chalcidoidea, Trichogrammatidae) and chrysopids (Neuroptera, Chrysopidae) is presented. Inside the invasive foci of C. ohridella, the effectiveness of seasonal colonization is proposed to be enhanced by using synthetic analogs of herbivore-induced plant volatiles (HIPV) that attract entomophages.