The dispersal and overwintering characteristics of Bactrocera dorsalis in winter jujube orchards in Puyang,Henan Province in autumn
The dispersal and overwintering habits of Bactrocera dorsalis in winter jujube orchards in the Puyang region during autumn were investigated.The number,activity rhythm,and overwintering status of B.dorsalis adults at different locations were monitored by color board trapping and digging method from September 2021 to March 2022.The results showed that B.dorsali adults exhibited a preference for yellow boards,with a significantly higher catch number observed in the northeast aligned traps compared to the southwest aligned traps.The number of adult fruit flies observed outside the orchard was significantly higher than that obsevrved inside.The number of trapped adults during the hours of 9:00-14:00 and 14:00-17:00 was found to be higher or significantly higher than that during the hours of 17:00-09:00.This indicates that the number of trapped adults during the day was significantly higher than that at night.The larvae and pupae of B.dorsalis were unable to survive the winter in the winter jujube orchard in the Puyang region.
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