THE CLIMATE CHANGE INFLUENCE ON THE CODLING MOTH’S SEASONAL FLIGHT DYNAMICS UNDER CONDITIONS OF THE CENTRAL REGION OF RUSSIA
The codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), is the key pest of the apple tree under conditions of the Central region of Russia. This is a species with ecological plasticity, so the number of its generations and harmfulness largely depend on climatic conditions and the both might increase under conditions of the global climate change. The main purpose of the present study is to assess the effect of the degree-day sum in the years with extreme climatic conditions on the dynamics of the seasonal flight of the codling moth under the conditions of the Central region of Russia. The growing season in 2010 in the Moscow region was characterized by excess heat and aridity (DD above 10°C - 1384.5°C), whereas the growing season in 2017 is characterized by low air temperatures (DD above 10°C - 680.6°C). One generation of the codling moth per year develops under conditions of the Moscow region, while the second generation is facultative. The abundant second generation of the pest might develop here in hot years, as it has been registered in 2010.