Phenotypic monitoring of intraspecific structure of Eurygaster spp. populations in various agrobiocenoses

Abstract

The purpose of the research was to study the phenotypic diversity of the populations of wheat bugs Eurygaster spp. in different soil and climatic conditions of Russia and changes in the intraspecific structure of their local populations under the influence of anthropogenic factors. Based on the methods of phenogenetics, an analysis and comparative study of the intraspecific structure of local populations of bugs in various agrobiocenoses of the Central Black Earth, North Caucasus and West Siberian Federal districts of the Russian Federation. Significant differences in the phenotypes of bug populations are revealed, which are manifested in a change in the ratio of occurrence frequencies of individual morphotypes. It was found that changes in the frequency of morphotypes of imagoes in populations of wheat bugs in this or other direction are associated with an intensive effect of grain crops of anthropogenic factors on agrobiocenoses. It is shown that such varieties of wheat as Grom, Chernozem 115, Skipetr, Nemchinovskaya 57 and Altajskaya 325 can induce diversification processes in local populations of wheat bugs. Phenogenetic monitoring of the structure of local populations of bugs from different agrobiocenoses showed a gradual change in their phenotypes toward typical parameters of the southern-steppe Eurasian ecotype.