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Insecticide susceptibilities of the two rice planthoppers Nilaparvata lugens and Sogatella furcifera in East Asia, the Red River Delta, and the Mekong Delta
Author(s) -
Matsumura Masaya,
SanadaMorimura Sachiyo,
Otuka Akira,
Sonoda Shoji,
Van Thanh Dinh,
Van Chien Ho,
Van Tuong Phan,
Loc Phung Minh,
Liu ZeWen,
Zhu ZengRong,
Li JianHong,
Wu Gang,
Huang ShouHorng
Publication year - 2018
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4729
Subject(s) - thiamethoxam , imidacloprid , fipronil , brown planthopper , delta , biology , east asia , river delta , toxicology , resistance (ecology) , pesticide , agronomy , geography , china , genetics , engineering , archaeology , gene , aerospace engineering
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 (LD 50 ) 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. © 2017 Society of Chemical Industry