Czech Mycology 62(1): 67–78             Article published: 15th February, 2011 doi: 10.33585/cmy.62107

BARTA M.

Pathogenicity assessment of entomopathogenic fungi infecting Leptoglossus occidentalis (Heteroptera: Coreidae).

Full article   (pdf, 114 kB)        

Abstract

Leptoglossus occidentalis, an insect species native to North America, is a pest of conifer seed orchards in its natural distribution area. Recently, it was accidentally introduced into Europe where its populations have been expanding throughout the continent. In this study we evaluated the pathogenicity of Beauveria bassiana, Isaria fumosorosea, and Metarhizium anisopliae to this pest under laboratory and outdoor conditions. Pathogenicity varied depending upon isolates, exposure methods and location of bioassay. In the laboratory, LC values were highest for I. fumosorosea and lowest for 50 M. anisopliae, and an indirect exposure was less effective than a direct one. In outdoor experiments the overall mortality was in all isolates significantly lower than mortality in the laboratory, and inter-specific variability in pathogenicity was not as prominent outdoors as in the laboratory. The results of this bioassay showed that I. fumosorosea has the potential as a microbial control agent of L. occidentalis.


Keywords:     Ascomycota, Hypocreales, seed bug, natural enemies, virulence

Full citation:

Barta M. (2010): Pathogenicity assessment of entomopathogenic fungi infecting Leptoglossus occidentalis (Heteroptera: Coreidae). – Czech Mycology 62(1): 67–78. copy to clipboard


doi: 10.33585/cmy.62107

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