ON THE EFFECTIVENESS OF THE NATURAL POPULATION OF THE PARASITOID OF THE EROPEAN GRAPEVINE MOTH BASSUS TUMIDULUS (NEES, 1812) (HYM.: BRACONIDAE) ON THE TAMAN PENINSULA

Abstract

The paper presents the results of studies of trophic relationships of Lobesia botrana Den. et Schiff. (Lepidoptera, Torticidae) in the «parasitoid - insect-host» system in ampelocenoses. For the first time for the Anapa-Taman viticulture zone of the Krasnodar region, the species Bassus tumidulus (Nees, 1812) (Microdus tumidulus (Nees von Esenbeck, 1812), Therophilus tumidulus (Nees von Esenbeck, 1812) was established as a mass natural enemy of the European grape moth in the conditions of industrial plantings of grapes. During the observation period (2021-2023), this type of parasitoid was the most common in terms of the number of infected specimens of L. botrana, its frequency of occurrence exceeded that of other parasitoids recorded in these studies by 2.7 times. There is a lack of knowledge of the parasitoid fauna in the consortia formed around the European grape moth in ampelocenoses. Knowledge of trophic relationships of the main economically significant pest of the vineyards of the Anapa-Taman zone of the Krasnodar region as a mechanism for regulating its abundance can help in the development of effective biologized protection measures in the fight against it. According to the results of extirpation, the seasonal dynamics of the flight of the adult parasitoid was revealed and compared with the life cycle of the harmful lepidopteran host. A complete adaptation of Bassus tumidulus to the target phases of the development of the European grape moth has been established. The conclusion is made about the specialization of the polyphage to this pest in the region. The characteristic features of Bassus tumidulus population dynamics were revealed, namely, an increase in the density of the hymenoptera population in ampelocenosis by the end of the growing season. The data of the biology of Bassus tumidulus, given in the literature, have been confirmed.