Seasonal migratory activity of SPODOPTERA FRUGIPERDA (J.E. Smith) (Lepidoptera: Noctuidae) across China and Myanmar

Abstract

Background The fall armyworm (FAW) Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) invaded Myanmar and China in 2018 and greatly impacted agricultural production and ecosystem balance in these areas. FAW is a migratory insect, but its seasonal migration pattern between the two countries has been largely unknown. From 2019 to 2021, we monitored the seasonal migration of FAW in the China–Myanmar border area using a searchlight trap, assessed the reproductive development status of female migrants and traced the migratory routes by trajectory simulation. Results FAW moths were trapped by the searchlight trap in Lancang County (Yunnan, China) all year, with obvious seasonal differences in the number caught. There were small‐scale persistent trapping peaks in spring and summer, and obvious peaks in autumn; only a small number of moths were trapped in winter. Examination of the ovaries of female moths collected in different seasons showed that most females had matured, indicating that the moths were migrating and did not take off from the local area. In the migration trajectory simulation, FAW mainly migrated from Myanmar to Southwest China in spring and summer and back to Myanmar in autumn. Conclusion Our findings indicate that FAW migrates between China and Myanmar according to the monsoon circulation, which will help guide cross‐border regional monitoring and management strategies against this pest. © 2022 Society of Chemical Industry.

A Social Network Analysis approach for identifying critical research areas in the management of Fall armyworm (Spodoptera frugiperda)

“…The core journals with the highest publication numbers are Insects (106), Pest Management Science (98), Journal of Economic Entomology (97), and Plos One (83), with a total citation of 2552 and an H-index of 26. Other core journals with lower publication numbers include Scienti c Reports (66), Journal of Invertebrate Pathology (49), Crop Protection (46), Journal of Pest Science (45), Florida Entomologist (43), Southwestern Entomologist (32), Environmental Entomology (29), Toxins (29), Insect Biochemistry and Molecular Biology (28), and Neotropical Entomology (28). Figure 4 shows core journals and 61 journals were in Zone 2 with 783 articles, and 447 journals in the tail zone produced 764 articles.…”

“…The push-pull strategy is used to manage pests by emphasizing the role of host plants, among other innovative concepts (Liu et al, 2022). Researchers have studied the seasonal migration patterns of the fall armyworm to develop effective control measures, and new techniques for monitoring its movements have been proposed (Ge et al, 2022;He et al, 2021;. Novel modeling techniques have been developed to predict the distribution of the FAW by considering ecological and climatic factors (Du et al, 2022dZhao et al, 2022.…”

A Review on Fall Armyworm (Spodoptera frugiperda) Insecticide Resistance

“…These practices can increase the reliance on insecticides for pest control, leading to increased selection pressure for resistance development. (8,(28)(29)(30)(31) To effectively manage insecticide resistance in S. frugiperda populations, it is important to consider these factors and develop integrated pest management strategies that take them into account. This may include the use of alternative control methods, such as biological control and cultural control, and the judicious use of insecticides to minimize selection pressure for resistance development.…”

The invasive Spodoptera frugiperda (J.E. Smith) has displaced Ostrinia furnacalis (Guenée) as the dominant maize pest in the border area of southwestern China

“…ACB can also feed on millet, sorghum and cotton in southeast Asia 24,26 . Because southwestern Yunnan borders the southeast Asian countries of Myanmar, Laos and Vietnam, the populations of ACB in these areas are closely related 28 …”

“…24,26 Because southwestern Yunnan borders the southeast Asian countries of Myanmar, Laos and Vietnam, the populations of ACB in these areas are closely related. 28 An agroecosystem is composed of numerous native species that may be negatively impacted by invasive species, resulting in destabilization of the original ecology. Notably, intraguild predation, which is common among invasive and native species, can provide food for the predator and reduce interspecific competition.…”