Pathogenicity of Aspergillus westerdijkiae to females and oothecae of Periplaneta Americana

Ciência Rural

Maldonado Junior, Walter²  Lemos, Manoel Victor Franco²  Monteiro, Antonio Carlos²  Baggio, Mariah Valente¹  Ferreira, Marcelo da Costa¹ 

[1] Universidade Estadual Paulista Júlio de Mesquita Filho , Jaboticabal, Brazil;UNESP, Jaboticabal, Brazil

关键词: cockroach;    biological control;    ovicide;   

DOI  :  10.1590/0103-8478cr20141856

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:Cockroach control is performed by the application of chemical insecticides which exert high selective pressure on populations and introduces synthetic substances in the environment, motivating the search for other methods of control such as entomopathogenic fungi. The objectives of this study were to investigate the pathogenicity of the JAB 42 Aspergillus westerdijkiae to females and oothecae of Periplaneta americana and to demonstrate its mechanism of action on oothecae. Suspensions containing 106 to 108 conidia/ml were used to infect females and oothecae. Mortality and other variables such as scanning electron microscopy were used to demonstrate the mechanism of action of the fungus. The isolated JAB 42 A. westerdijkiae is pathogenic to oothecae of P. americana, with low capacity to kill females. Adhesion, germination, penetration and extrusion of the fungus on the cockroach oothecae were observed.

【 授权许可】

Unknown