Population occurrence of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in the winter season of China
YANG Xian-ming1*, SONG Yi-fei1, 2*, SUN Xiao-xu1, 3, SHEN Xiu-jing1, 2, WU Qiu-lin1, ZHANG Hao-wen1, ZHANG Dan-dan1, ZHAO Sheng-yuan1, LIANG Ge-mei1, WU Kong-ming1
1 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China 2 State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, P.R.China 3 College of Plant Protection, Southwest University, Chongqing 400716, P.R.China
Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith), has become an important pest in Chinese agricultural systems since its invasion on 11 December 2018. After its establishment, FAW months in the year-round breeding region have become the main source population migrating to other areas in China. Field investigations were conducted in tropical and subtropical regions to improve understanding of its year-round breeding area in China. The results showed that FAW larval density was significantly correlated with the seasonal temperature of the location surveyed. The FAW larvae maintained a high density in the tropical area and were frequently found in sites of the south subtropical region, but were absent from the north subtropical region and the northern part of the central subtropical region. These results indicated that FAW can reproduce annually in the tropical and south subtropical regions of China, including Hainan, Taiwan and the southern area of Fujian, Guangdong, Guangxi, Guizhou, and Yunnan. Hence, great effort should be made to monitor and control FAW in the year-round breeding region to suppress the population density of this area and to reduce migration of moths into northern parts of China. This study clarifies the occurrence area of the pest in winter in China and provides much valuable information for its population forecasting and management.
Fund: This work was supported by the National Key R&D Program of China (2017YFB0403905), the Central Public-interest Scientific Institution Basal Research Fund, China (CAAS-ZDRW202007), and the earmarked fund for China Agriculture Research System (CARS-15-19).
YANG Xian-ming, SONG Yi-fei, SUN Xiao-xu, SHEN Xiu-jing, WU Qiu-lin, ZHANG Hao-wen, ZHANG Dan-dan, ZHAO Sheng-yuan, LIANG Ge-mei, WU Kong-ming .
2021.
Population occurrence of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), in the winter season of China. Journal of Integrative Agriculture, 20(3): 772-782.
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