Potential of Steinernema carpocapsae(Weiser) as a biological control agent against potato tuber moth, Phthorimaea operculella(Zeller)(Lepidoptera: Gelechiidae)  

作　　者：YAN Jun-jie Shovon Chandra SARKAR MENG Rui-xia Stuart REITZ GAO Yu-lin 

机构地区：[1]State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,P.R.China [2]College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,P.R.China [3]Department of Crop and Soil Sciences,Malheur County Extension,Oregon State University,Ontario,OR 97914,USA

出　　处：《Journal of Integrative Agriculture》2020年第2期389-393,共5页农业科学学报（英文版）

基　　金：supported in part by the National Key Research and Development Program of China (2018YFD0200802)

摘　　要：The entomopathogenic nematode,Steinernema carpocapsae,was evaluated for control of the potato tuber moth,Phthorimaea operculella,under laboratory conditions.We evaluated different concentrations of S.carpocapsae for control of 2 nd,3 rd,and 4 th instar P.operculella.The median lethal concentration(LC50)of S.carpocapsae infective juveniles(IJs)to 2 nd,3 rd and 4 th instar larvae of P.operculella was 200,363,181 IJs mL–1,respectively.With the extension of treatment time,the cumulative mortality increased for 2 nd,3 rd,and 4 th instar larvae and pupae of P.operculella.Fourth instars were the most susceptible for all observation periods.Therefore,our results suggest that S.carpocapsae could be an effective biological control agent for P.operculella.The entomopathogenic nematode, Steinernema carpocapsae, was evaluated for control of the potato tuber moth, Phthorimaea operculella, under laboratory conditions. We evaluated different concentrations of S. carpocapsae for control of 2 nd, 3 rd, and 4 th instar P. operculella. The median lethal concentration(LC50) of S. carpocapsae infective juveniles(IJs) to 2 nd, 3 rd and 4 th instar larvae of P. operculella was 200, 363, 181 IJs mL–1, respectively. With the extension of treatment time, the cumulative mortality increased for 2 nd, 3 rd, and 4 th instar larvae and pupae of P. operculella. Fourth instars were the most susceptible for all observation periods. Therefore, our results suggest that S. carpocapsae could be an effective biological control agent for P. operculella.

关 键 词：Steinernema carpocapsae Phthorimaea operculella patato integrated biological pest control 

分 类 号：S476[农业科学—农业昆虫与害虫防治] S435.32[农业科学—植物保护]