Potential of Metarhizium anisopliae (Metsch.) Sorokin (Ascomycetes, hypocreales) in the control of Bonagota salubricola (Meyrick) (Lepidoptera, Tortricidae) and its compatibility with chemical insecticides

Brazilian Journal of Biology

Fa. Anhalt²  Jl. Azevedo¹  Rl. Sugayama¹  A. Specht²  Nm. Barros² 

[1] ,Universidade de Caxias do Sul Instituto de Biotecnologia Centro de Ciências Agrárias e BiológicasCaxias do Sul RS ,Brazil

关键词: entomopathogenic fungi;    apple;    biological control;    leafroller;    fungos entomopatogênicos;    maçã;    controle biológico;    lagarta enroladeira da macieira;   

DOI  :  10.1590/S1519-69842010000500003

来源: SciELO

【 摘 要 】

Several insects are harmful to apples grown in Brazil, especially the leafroller Bonagota salubricola (Lepidoptera, Tortricidae), usually controlled with chemical insecticides. The purpose of the present study was to investigate the use of Metarhizium anisopliae strains in the control of the apple leafroller, by assessing their virulence to B. salubricola larvae in bioassays with suspensions of 2 x 10(5) to 2 x 10(9) conidia/mL as well as their relationship with protease expression. The most effective strain underwent a compatibility test with chemical insecticides. The M. anisopliae E6 strain showed a good performance, with up to 88% mortality and a LT50 of 1.66 days. The virulence was positively correlated with a higher enzymatic activity. The E6 strain was compatible with tebufenozide, evidencing its potential to control B. salubricola.

【 授权许可】

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