Изучение особенностей развития сливовой плодожорки Grapholita funebrana Tr. (Lepidoptera : Tortricidae ) в изменяющихся климатических условиях краснодарского края

Abstract

Effective management of phytophagous pests and improvement of crop protection measures can be based on the study of the life cycle under specific conditions. In this respect, a number of issues relating to the biological features of plum moth development under modern conditions require clarification and further study. The life cycle of phytophages is determined by two main parameters: heat availability (the sum of the effective temperature) and the duration of daylight hours. The amount of heat required to complete the different stages of otogenesis is characterised by the sum of average daily temperatures. The article presents the results of observations on the development of Grapholita funebrana (Treitschke, 1835) (Lepidoptera: Tortricidae) in 2017–2020, in the Prikubansky zone of the central horticultural subzone of the Krasnodar Territory. The research objectives included gaining new knowledge about adaptive responses, dynamic processes occurring in the G. funebrana population under conditions of increased abiotic effects in the conditions of southern Russia. In the course of the research it was established that the changing climatic conditions observed in recent years have an impact on the flight of the first butterflies of the overwintering generation and on the set of sum of effective temperatures (SET) necessary for the onset and mass flight of the phytophagus. The specified number of calendar days and the sum of effective temperatures required for the development of the overwintered, first and second summer generations are shown in comparison with the average annual indicators. Several peaks were noted during the mass flight period of phytophagus, due to the interruption of the flight period in spring with wind, precipitation, low temperatures, and in summer with high temperatures combined with atmospheric dryness. Several peaks have been observed during the mass flight period of the phytophage, due to the interruption of flight in the spring by wind, precipitation, lower temperatures, and in the summer by high temperatures combined with atmospheric drought.