Recent Investigation of Stored-Grain Insects and Mites in Grain-related Sites in Anhui Province

Abstract

In order to find out the types and distribution characteristics of stored-grain insect mites and provide basis for pest control in Anhui province, 59 grain-related places were investigated in 2016 and 2017.The survey results showed that a total of 51 species of 28 families and 7 orders of stored grain insects were founded in these areas, of which the amount of Coleoptera species was the largest, with a total of 40 species.According to the frequency，the main pests were Sitophilus oryzae (Linnaeus), Cryptolestes ferrugineus(Stephens), Tribolium castaneum (Herbst), Rhyzopertha dominica (Fabricius), with occurrence frequency of 100%, 76.3%, 66.1%, 64.4% respectively.The main occurrence of stored insects was in processing plants,and the species are abundant, accounting for 88% of the total species found, Among the three types of survey points including grain storage, processing plants and farmers, the main types of stored-grain insects were the same.The main types of occurrence were the same in different regions of the province, but the frequency of occurrence differed significantly.A total of 8 species of mites were collected, and a total of 5 species were identified.In addition, Anhui province had a rich variety of natural enemies of stored grain pests, mainly were parasitic wasps, scorpions and predatory mites.

Keywords

• anhui province
• stored grain
• insects and mites
• survey
• species