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Insecticide resistance monitoring in field populations of the white-back planthopper, Sogatella furcifera( Hemiptera: Delphacidae ) in rice production areas of Hubei Province,central China
Author(s): 
Pages: 1213-1221
Year: Issue:  11
Journal: Acta Entomologica Sinica

Keyword:  Sogatella furciferaneonicotinoidsorganophosphatescarbamatespyrethroidsinsect growth regulatorsazomethine pyridinesresistance monitoring;
Abstract: 【Aim】The white-back planthopper,Sogatella furcifera,is a well-known serious cosmopolitan pest on rice crop. Chemical insecticides have been considered as an effective way for its control.However,field populations of S. furcifera have developed resistance to many insecticides. The objective of the present study is to monitor the insecticide resistance in field populations of S. furcifera in Hubei Province,central China, so as to provide useful information for reasonable applications of these insecticides. 【Methods】Resistance of four field populations of S. furcifera collected form rice fields of Putuan of Ezhou,Changgang of Ezhou,Wen’an of Zhijiang and Nankou of Shishou during 2011-2014 to eleven commonly used insecticides was detected by rice stem dipping method. 【Results 】 The field populations of S. furcifera have developed medium-level resistance to buprofezin [resistance ratio( RR) =13. 0-38. 6]. Moreover,the field populations tested showed no resistance( susceptible) to medium-level resistance to imidacloprid( RR = 2. 6-15. 4),no resistance( susceptible) or low-level resistance to clothianidin( RR = 3. 0-7. 0),dinotefuran( RR = 2. 5-7. 0),acetamiprid( RR = 3. 3-8. 2) and thiamethoxam( RR = 2. 1-6. 9),and maintained susceptible to nitenpyram( RR = 2. 2-4. 9),isoprocarb( RR = 2. 0-4. 6) and etofenprox( RR = 1. 8-4. 0). In addition,the field populations of Changgang( 2011 and 2012) and Putuan( 2012) remained susceptible to pymetrozine( RR = 3. 1-4. 9),while other populations developed moderate-level resistance to pymetrozine( RR = 15. 2-91. 0). All populations were susceptible or showed low-level resistance to chlorpyrifos( RR = 1. 7-8. 5) except that the field populations of Changgang( 2013 and 2014) showed moderate-level resistance to chlorpyrifos( RR = 15. 6 and 10. 1,respectively). 【Conclusion】 Due to the obvious increase in resistance to imidacloprid,buprofezin and pymetrozine,resistance monitoring is urgently needed,and applications of these insecticides should also be limited to prevent or delay further increase of insecticide resistance in S. fercifura.
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