title: Insecticide resistance monitoring and correlation analysis of insecticides in field populations of the brown planthopper Nilaparvata lugens (stål) in China 2012-2014.
abstract: The brown planthopper is a serious rice pest in China. Chemical insecticides have been considered a satisfactory means of controlling the brown planthopper. In the present study, we determined the susceptibility of twenty-one populations of Nilaparvata lugens to eleven insecticides by a rice-stem dipping method from 2012 to 2014 in eight provinces of China. These field-collected populations of N. lugens had developed high levels of resistance to imidacloprid (resistant ratio, RR=233.3-2029-fold) and buprofezin (RR=147.0-1222). Furthermore, N. lugens showed moderate to high levels of resistance to thiamethoxam (RR=25.9-159.2) and low to moderate levels of resistance to dinotefuran (RR=6.4-29.1), clothianidin (RR=6.1-33.6), ethiprole (RR=11.5-71.8), isoprocarb (RR=17.1-70.2), and chlorpyrifos (RR=7.4-30.7). In contrast, the susceptibility of N. lugens to etofenprox (RR=1.1-4.9), thiacloprid (RR=2.9-8.2) and acetamiprid (RR=2.7-26.2) remained susceptible to moderate levels of resistance. Significant correlations were detected between the LC50 values of imidacloprid and thiamethoxam, dinotefuran, buprofezin, and etofenprox, as well as between clothianidin and thiamethoxam, dinotefuran, ethiprole, acetamiprid, and thiacloprid. Similarly, significant correlations were observed between chlorpyrifos and etofenprox, acetamiprid and thiacloprid. Additionally, the activity of the detoxification enzymes of N. lugens showed a significant correlation with the log LC50 values of imidacloprid, dinotefuran and ethiprole. These results will be beneficial for effective insecticide resistance management strategies to prevent or delay the development of insecticide resistance.
authors: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
authors: Xiaolei
authors: X
authors: Zhang
authors: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
authors: Xun
authors: X
authors: Liao
authors: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
authors: Kaikai
authors: K
authors: Mao
authors: Hubei General Station of Plant Protection, Wuhan 430070, PR China.
authors: Kaixiong
authors: K
authors: Zhang
authors: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China. Electronic address: huwan@mail.hzau.edu.cn.
authors: Hu
authors: H
authors: Wan
authors: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China. Electronic address: jianhl@mail.hzau.edu.cn.
authors: Jianhong
authors: J
authors: Li
mesh_terms: D000818:Animals; D002219:Carbamates; D002681:China; D004390:Chlorpyrifos; D006146:Guanidines; D006430:Hemiptera / Q000737:chemistry / Q000187:drug effects; D007093:Imidazoles; D007305:Insecticide Resistance; D007306:Insecticides / Q000032:analysis; D000073943:Neonicotinoids; D009574:Nitro Compounds; D010078:Oxazines; D011720:Pyrazoles; D011722:Pyrethrins; D011725:Pyridines; D013829:Thiadiazines; D000077922:Thiamethoxam; D013843:Thiazines; D013844:Thiazoles
chemical_list: D002219:Carbamates; D006146:Guanidines; D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; D010078:Oxazines; D011720:Pyrazoles; D011722:Pyrethrins; D011725:Pyridines; D013829:Thiadiazines; D013843:Thiazines; D013844:Thiazoles; C076840:ethofenprox; C465368:dinotefuran; C480342:clothianidin; C083997:buprofezin; C082359:imidacloprid; C472185:ethiprole; C464485:acetamiprid; C065256:isoprocarb; D000077922:Thiamethoxam; C417209:thiacloprid; D004390:Chlorpyrifos
keywords: Brown planthopper; Correlation analysis; Detoxifying enzymes; Insecticide resistance; Insecticides