Destinations of third-generation Mythimna separata (Lepidoptera: Noctuidae) moths in Jilin and its effects on population genetic diversity

Abstract Third-generation oriental armyworm larvae, Mythimna separata (Walker) (Lepidoptera: Noctuidae), have caused considerable economic losses in Jilin. Understanding the occurrence, regularity and return movement of third-generation adults is crucial for pest forecasting. The study was conducted using systemic monitoring, radar observations molecular markers from 2015 to 2019. main results are as follows: (1) moths were regularly captured late August September. These been attributed local emergence identified an “emigration population.” Wind speed temperature advantageous moth migration, northeasterly winds account 9.6% total. Radar studies determined that migrant flying height mainly below 600 m. Moths migrated over a range directions, including their movements. Forward trajectories predicted destination regions Korean Peninsula, Russian Far East, northern China unfavorable survival. (2) A total 29 haplotypes detected. There unique between two sampling years. haplotype analysis indicated similar content diversity indices appear maintained. Overall, our findings indicate did not make successful flight, but genetic unaffected.