Monitoring Trends in Insecticide Resistance of Field Populations of Sogatella furcifera (Hemiptera: Delphacidae) in Guizhou Province, China, 2012–2015

Abstract

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.

Baseline susceptibility of different population of Whitebacked planthopper, Sogatella furcifera from rice growing areas of Tamil Nadu, India to imidacloprid 17.8% SL

“…This shows that the Nagapattinam population has developed highest resistant level (6.2 fold) followed by Bhavani (4.1 fold), Coimbatore (2.8 fold) and the population from this region had been frequently sprayed by the imidacloprid 17.8% SL. The results of our study is on par with [18] S. furcifera from five regions of Guizhou province recorded low resistance against thiamethoxam (RR = 0.27 -9.69) and susceptibility to moderate resistance against imidacloprid (RR = 0.71 -26.06) The imidacloprid resistant strains of WBPH were obtained through laboratory selections for cross resistance profiling showed resistance fold of 10.4 [19] . The population from Yunnan, Jiangsu and Zhejiang provinces resulted in moderate resistance to the imidacloprid with LC50 value ranging from 0.2 ppm to 1.091 ppm.…”

Insecticide application and its effect on the density of rice planthoppers, <i>Nilaparvata lugens</i> and <i>Sogatella furcifera</i>, in paddy fields in the Red River Delta, Vietnam

“…12) In Asia, resistance against several types of insecticides has been reported in BPH and WBPH. [13][14][15][16] Matsumura et al reported that BPH has a decreased susceptibility to imidacloprid and thiamethoxam, while WBPH remains susceptible to imidacloprid but not to fipronil in the Red River Delta and Japan. 17) Among insecticides registered only for rice planthoppers, 51 active ingredients and 773 commercial products are available in Vietnam.…”

Cloning and Functional Verification of CYP408A3 and CYP6CS3 Related to Chlorpyrifos Resistance in the Sogatella furcifera (Horváth) (Hemiptera: Delphacidae)

“…A field WBPH resistance for chlorpyrifos was reported in Guizhou, Sichuan Province and many other rice growing areas of China in the past 15 years [ 11 , 12 , 13 ]. As a traditional and highly effective organophosphorus insecticide, Chlorpyrifos continues to be used in the control of pests such as Lepidoptera, Diptera, and Hemiptera [ 14 ]. However, due to the complex environment of pesticide use and the improvement of insect adaptability, organophosphate pesticides such as chlorpyrifos are suffering a new risk crisis of being banned.…”