Pest Management Science (2018) 74, 456-464

Masaya Matsumura, Sachiyo Sanada-Morimura, Akira Otuka, Shoji Sonoda, Dinh Van Thanh, Ho Van Chien, Phan Van Tuong, Phung Minh Loc, Ze-Wen Liu, Zeng-Rong Zhu, Jian-Hong Li, Gang Wu and Shou-Horng Huang (2018)
Insecticide susceptibilities of the two rice planthoppers Nilaparvata lugens and Sogatella furcifera in East Asia, the Red River Delta, and the Mekong Delta
Pest Management Science 74 (2), 456-464
Abstract:
Background
The two rice planthoppers, Nilaparvata lugens and Sogatella furcifera, have different life cycles in the regions of East Asia, the Red River Delta, and the Mekong Delta. The susceptibilities of these species to a range of insecticides have not previously been compared among the three regions over multiple years. Here, we describe the differences and similarities in insecticide susceptibilities of the two species among the three regions in 2006–2011.
Results
In all three regions in 2006 - 2011, N. lugens developed high and moderate levels of resistance to imidacloprid and thiamethoxam, respectively, but this species did not develop resistance to fipronil. In contrast, S. furcifera developed a high level of resistance to fipronil. The ranges in 50% lethal dose (LD₅₀) values for N. lugens treated with both imidacloprid and thiamethoxam were similar over time between East Asia and the Red River Delta, and were different in the Mekong Delta.
Conclusion
The results support the idea that resistant populations migrate from the Red River Delta region to East Asia. Therefore, continuous monitoring of the susceptibility of N. lugens to insecticides in the Red River Delta is very important for insecticide resistance management in East Asia.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Masaya Matsumura, Akira Otuka, Shoji Sonoda, Zeng-Rong Zhu, Shou-Horng Huang

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nilaparvata lugens		Vietnam
	Sogatella furcifera		Vietnam