生物安全学报Issue(2)：107-111,5.DOI:10.3969/j.issn.2095-1787.2014.02.008
不同土壤类型和含水量下金龟子绿僵菌对红火蚁的致病力
Effect of soil water content and composition on the pathogenicity of Metarhizium anisopliae against the invasive red fire ant, Solenopsis invicta
摘要
Abstract
The red imported fire ant Solenopsis invicta is a dangerous invasive ant species .A possible means of pro-tection against the ant is the entomopathogenic fungus , Metarhizium anisopliae.Environmental factors can impact the toxicity of M. anisopliae against S.invicta.[Method]This paper investigated the effect of M.anisopliae M09 on the survival of fire ants exposed to different doses and under various soil moisture conditions and composition .[Result]The survival rate of fire ant workers decreased with an increasing dosage of M.anisopliae M09;the LC50 was 0.37 g after 4 days.M.anisopliae M09 killed nearly all ants in sandy , loamy and clay soils, and had significant difference from the control .However, the treatment reduced ant numbers more effectively in sandy soil than in loamy or clay soils .The mortality of workers treated by M.anisopliae M09 at different soil moisture were signifi-cantly different (P<0.01).[Conclusion and significance]Soil composition and moisture have significant effect on M.anisopliae a-gainst the fire ant , and the soil composition and moisture should be considered when M.anisopliae is applied against the red fire ant .关键词
红火蚁/金龟子绿僵菌/土壤环境/致病力Key words
Solenopsis invicta/Metarhizium anisopliae/soil environment/pathogenicity引用本文复制引用
王磊,许益镌,陆永跃,曾玲..不同土壤类型和含水量下金龟子绿僵菌对红火蚁的致病力[J].生物安全学报,2014,(2):107-111,5.基金项目
国家重点基础研究发展计划项目 （）
