Effects of a novel mesoionic insecticide,triflumezopyrim,on the feeding behavior of rice planthoppers,Nilaparvata lugens and Sogatella furcifera(Hemiptera:Delphacidae)  

作　　者：ZHU Jun SUN Wen-qing LI Yao GE Lin-quan YANG Guo-qing XU Jian-xiang LIU Fang 

机构地区：[1]College of Horiculture and Plant Protection,Yangzhou University,Yangzhou 225009,P.R.China [2]Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops,Yangzhou University,Yangzhou 225009,P.R.China [3]Joint International Research Laboratory of Agriculture&Agri-Product Safety,Yangzhou University,Yangzhou 225009,P.R.China

出　　处：《Journal of Integrative Agriculture》2020年第10期2488-2499,共12页农业科学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(31872928);the Jiangsu Agricultural Scientific Self-Innovation Fund,China(cx[18]3057);the National Key R&D Program of China(2018YFD0300804);the Key Research Program of Jiangsu Province,China(BE2018355).

摘　　要：The rice planthoppers,Nilaparvata lugens and Sogatella furcifera,are important sap-sucking pests of rice in Asia.The mesoionic insecticide tifumezopyrim was previously shown to be highly effective in controlling both N.lugens and S.furcifera.In this study,electropenetrography(EPG)was used to evaluate the effect of three triflumezopyrim concentrations(LC。LC。and LC)on the feeding behavior of N.lugens and S.furcifera.EPG signals of planthoppes indicated that there were six different waveforms NP,N1,N2,N3,N4,and N5,which corresponded to non-penetration,stylet penetration into epidermis,salivation,extracellular movement of stylet,sap ingestion in phloem,and water ingestion in xylem during feeding.Compared to untreated controls,triflumezopyrim at LC。and LC。prolonged the duration of the non-penetration period by 105.3 to 333.7%.The probing frequencies of N.lugens exposed to tiflumezopyrim at LC1。and LCso were significantly increased;however,the probing frequencies of S.furcifera showed a significant decrease when exposed to triflumezopyrim at all concentrations.Triflumezopyrim exposure prolonged the duration of salivation and shortened the duration of extracellular movement.The duration of phloem sap ingestion decreased from 37.2 to 77.7%in the LCgo and LCgo treatments,respectively.Differences in feeding behavior in response to triflumezopyrim and pymetrozine were minimal.In summary,the results show that the LC。and LCgo concentrations of trflumezopyrim inhibit the feeding activities of N.lugens and S.furcifera mainly by prolonging the duration of non penetration and by shortening the duration of phloem sap ingestion,which may foster more efficient use of triflumezopyrim in Asia.

关 键 词：Nilaparvata lugens Sogatella furcifera triflumezopyrim pymetrozine feeding behavior EPG 

分 类 号：S482.3[农业科学—农药学]