Population dynamics analysis of Zeugodacus cucuribitae in three host cucurbits in Neixiang County,Henan Province
[Aim]In recent years,the melon fly Zeugodacus cucuribitae(Coquillett),a worldwide quarantine pest,has been intro-duced from the south of China to the southwestern part of Henan province,causing a major impact on the yield and quality of avarie-ty of cash crops.Investigating its population dynamics on different host crops in newly introduced regions helps reveal its damage pat-tern in the field,and provides a scientific basis for local pest management.[Method]From 2020 to 2022,the population dynamics of Z.cucuribitae adults on three host cucurbits,namely Luffa cylindrica,Cucurbita moschata,and Cucurbita pepo,were surveyed and comparatively analyzed in the fields of Neixiang County,Nanyang City,Henan Province,China.[Result]This pest occurred in all three years in Neixiang county,with adult populations occurring between late June to July and late October,and the peak period of adults occurring from mid-August to late September.Its population size,population dynamics,and period of occurrence were all affected by the host crops and the age.[Conclusion]The population size and damage of Z.cucuribitae in this region are increasing year by year,and control measures should be taken timely in different melon crops according to local conditions.