1997•Journal of ParasitologyOpen access

Pathogenicity of the Entomopathogenic Fungus Metarhizium anisopliae (Deuteromycetes) to Ixodes scapularis (Acari: Ixodidae)

Elyes Zhioua, Marsha Browning, Paul W. Johnson, Howard S. Ginsberg, Roger A. LeBrun

Abstract

The entomopathogenic fungus Metarhizium anisopliae is highly pathogenic to the black-legged tick, Ixodes scapularis. Spore concentrations of 10(8)/ml for engorged larvae and 10(7)/ml for engorged females resulted in 100% tick mortality, 2 wk postinfection. The LC50 value for engorged larvae (concentration to kill 50% of ticks) was 10(7) spores/ml. Metarhizium anisopliae shows considerable potential as a microbial control agent for the management of Ixodes scapularis.

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Key concepts: Ixodes scapularis, Metarhizium anisopliae, Biology, Ixodidae, Entomopathogenic fungus, Tick, Acari, Ixodes