Pathogenicity of Serratia marcescens to hazelnut weevil(Curculio dieckmanni)  

作　　者：Ping Zhang Qingquan Zhao Xiaoqian Ma Ling Ma 

机构地区：[1]College of Forestry,Northeast Forestry University,26 Hexing Road,Harbin 150040,People’s Republic of China [2]Forest Protection Research Institute,Heilongjiang Academy of Forestry,Haping Road,Harbin 150081,People’s Republic of China

出　　处：《Journal of Forestry Research》2021年第1期409-417,共9页林业研究（英文版）

基　　金：the National Key Research and Development project of China(2016YFC0500308);Special Project for Double First-Class-Cultivation of Innovative Talents(000/41113102);the Natural Science Foundation of Heilongjiang Scientifi c Committee(C2018055);the Application Research Project of Heilongjiang Provincial Forest Industry Administration(sgzjY2014004).

摘　　要：The hazelnut weevil(Curculio dieckmanni Faust.)is a major pest of Asian hazel(Corylus heterophylla Fisch.)in China.Dead hazelnut weevil larvae were examined and the associated pathogenic bacterium was identifi ed as Serratia marcescens Bizio.This signifi cantly shortened the lifespan of hazelnut weevil.Larval weight was reduced as a function of S.marcescens concentration and exposure time.The structure of infected midgut cells was altered,with necrosis of the wall tissues and many cells becoming dislodged,creating cavities.The S.marcencens strain inhibited digestive enzyme activity and protective enzymes in the midgut of adult hazelnut weevil.Inhibition on S.marcencens strain increased with treatment time.S.marcescens directly destroyed the midgut cells and interfered with digestive and protective enzymes.This decreased the food intake and increased mortality of hazelnut weevil.S.marcescens appears to be an eff ective bacterium for the control of hazelnut weevil but requires further study,including biological formulation development and fi eld application.

关 键 词：BIOCONTROL Curculio dieckmanni Corylus heterophylla Pathogenic mechanism Serratia marcescens 

分 类 号：S436.64[农业科学—农业昆虫与害虫防治]