Migration of diamondback moth,Plutella xylostella,across the Bohai Sea in northern China |
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| Institution: | 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China;2. Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Taiyuan 030032, PR China;1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;2. Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan 430064, China;3. School of Life Science, Central China Normal University, Wuhan, 430079, China;4. Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China;5. Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China;6. USDA, ARS, U.S. Arid Land Agricultural Research Center, Maricopa, AZ 85138, USA;7. Department of Entomology, University of Arizona, Tucson, AZ 85721, USA;1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;2. MoA-CABI Joint Laboratory for Bio-safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;3. CABI East Asia, Beijing, China;1. Key Laboratory of Agricultural Information Service Technology, Ministry of Agriculture and Rural Affairs, Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;2. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China;3. Radar Research Lab, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The diamondback moth, Plutella xylostella (L.), is one of the most destructive pest species of cruciferous vegetables worldwide. Previous studies on the migration of P. xylostella in China were mostly carried out in its ‘year-round breeding region’ (YBR) or ‘winter diapause region’ (WDR). However, the pattern of monthly movements in its ‘summer breeding region’ (SBR) (i.e. northern China, where they cannot overwinter) remains unknown. Here we present data from an 11-year study of P. xylostella made by searchlight trapping on Beihuang (BH) Island in the center of the Bohai Strait, which provides direct evidence that P. xylostella moths must have been migrants, and undertook regular long-distance migration across the sea. There was considerable annual and monthly variation in the number of P. xylostella trapped on BH, with the vast majority was trapped in the summer. The mean time from the earliest trapping to the latest trapping within a year was 117 ± 19 d in the five mass-migration years, with the shortest time span of 51 d in 2005 and the longest of 157 d in 2010. Some females trapped in May and June showed a relatively higher proportion of having mated and a degree of ovarian development suggesting that the migration of this species is not completely bound by the ‘oogenesis-flight syndrome’. These findings provide a good starting point of research on P. xylostella migration between its WDR (or YBR) and SBR, which will help us develop more effective regional management strategies against this pest. |
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| Keywords: | Long-distance migration Over-sea movements Searchlight trapping Sexual maturation |
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