Inactivation of Representative Species of Entomopathogenic Viruses, a Bacterium, Fungus, and Protozoan by an Ultraviolet Light Source

Abstract

Four entomopathogenic viruses and one each of an entomopathogenic bacterium, fungus, and protozoan were inactivated when exposed to ultraviolet light; the half-life was less than 4 h in every instance. Relative ranking in stability of the entomopathogens was as follows: B. thuringiensis Berliner > Nomuraea rileyi (Farlow) Samson > entomopox Virus > nucleopolyhedrosis virus = cytoplasmic polyhedrosis virus > Vairimorpha (= Nosema ) necatrix (Kramer) > granulosis virus.