Monitoring Trends in Insecticide Resistance of Field Populations of Sogatella furcifera (Hemiptera: Delphacidae) in Guizhou Province, China, 2012-2015.
Sogatella furcifera (Horváth) is a migratory insect that is one of the most important pest species on rice in many Asian countries. Control of S. furcifera (Hemiptera: Delphacidae) primarily depends on the use of chemical insecticides, and with this extensive reliance on pesticides, determining the degree of resistance of S. furcifera populations to the chemicals used for its control is essential. In this study, the resistance level to six conventional insecticides in five populations of S. furcifera from Guizhou Province was monitored yearly using the rice-stem dipping method in 2012-2015 to precisely understand current resistance levels and to estimate trends in the development of insecticide resistance in S. furcifera in Guizhou. Overall, S. furcifera from five regions in Guizhou showed a trend toward decreased susceptibility to isoprocarb (resistance ratio [RR] 0.82-3.59), susceptibility to low resistance against thiamethoxam (RR 0.27-9.69), susceptibility to moderate resistance to imidacloprid (RR 0.71-26.06), and decreased susceptibility to moderate resistance to chlorpyrifos (RR 4.63-19.58). The resistance to pymetrozine (RR 10.48-84.65) was moderate to high, and that to buprofezin (RR 6.36-412.43) was low to very high. In conclusion, the use of buprofezin and pymetrozine to control S. furcifera should be reduced in Guizhou Province, whereas prudent use at a reasonable frequency of chlorpyrifos and imidacloprid can continue. Isoprocarb and thiamethoxam are the best choices for effective management of S. furcifera. Rotations using alternative insecticides with different modes of action are recommended for regions in which resistance is at a moderate level.
The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Institute of Entomology, Guizhou University, Guiyang, Guizhou, 550025, P.R. China ( jinjianxue163@163.com ; daochaojin@126.com ).|Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, P.R. China ( 646429940@qq.com ; 2721890533@qq.com ; leefengliang@126.com ; 396060371@qq.com ).
Jian-Xue
JX
Jin
The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions, Institute of Entomology, Guizhou University, Guiyang, Guizhou, 550025, P.R. China (jinjianxue163@163.com; daochaojin@126.com).
Dao-Chao
DC
Jin
Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, P.R. China (646429940@qq.com; 2721890533@qq.com; leefengliang@126.com; 396060371@qq.com).
Wen-Hong
WH
Li
Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, P.R. China (646429940@qq.com; 2721890533@qq.com; leefengliang@126.com; 396060371@qq.com).
Ying
Y
Cheng
Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, P.R. China (646429940@qq.com; 2721890533@qq.com; leefengliang@126.com; 396060371@qq.com).
Feng-Liang
FL
Li
Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, P.R. China (646429940@qq.com; 2721890533@qq.com; leefengliang@126.com; 396060371@qq.com).
Zhao-Chun
ZC
Ye
D000818:Animals; D002681:China; D006430:Hemiptera / Q000187:drug effects*; D007305:Insecticide Resistance; D007306:Insecticides / Q000494:pharmacology*
D007306:Insecticides
Sogatella furcifera; insect growth regulator; neonicotinoid; pyridine; resistance monitoring