Pathogenicity of the entomopathogenic fungus, Beauveria bassiana (Bals.) Vuill. endophytic and a soil isolate against the squash beetle, Epilachna chrysomelina (F.) (Coleoptera: Coccinellidae)

Egyptian Journal of Biological Pest Control

article

Hassan, Feyroz Ramadan¹  Abdullah, Samir Khalaf²  Assaf, Lazgeen Haji³ 

[1] Department of Plant Protection, College of Agriculture, University of Duhok;Medical Laboratory Technology Department, Alnoor University College;General Directorate of Agriculture-Duhok

关键词: Pathogenicity;    Beauveria bassiana;    Endophyte;    Epilachna chrysomelina;    Soil;    Iraq;   

DOI  :  10.1186/s41938-019-0169-x

学科分类：化学工程（综合）

来源: Springer

【 摘 要 】

Laboratory and field bioassays were conducted to evaluate the pathogenicity of an endophytic and a soil isolate of the entomopathogenic fungus, Beauveria bassiana (Bals.) Vuill. against different stages of squash beetle, Epilachna chrysomelina (F.) (Coleoptera: Coccinellidae). Both isolates were identified by ITS rDNA sequence analysis. Both isolates were pathogenic to the squash beetle; however, their potential was different according to the conidia concentration and the exposure period. Three days post treatment, (100%) mortality rate was obtained, when the first and second larval instars were treated by the B. bassiana ES (soil isolate) compared to 83.67 and 72.60%, respectively when treated with the endophytic isolate. A percentage of 17.67% malformation occurred among the adults that emerged from treated pupae. The highest mortality percentage under field conditions were 28.67 and 22.33% for larvae and adults, respectively.

【 授权许可】

CC BY