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1 September 2002 Laboratory and Field Evaluation of the Entomopathogenic Fungus Metarhizium anisopliae (Deuteromycetes) for Controlling Questing Adult Ixodes scapularis (Acari: Ixodidae)
Michael A. Benjamin, Elyes Zhioua, Richard S. Ostfeld
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Abstract

Unfed adult Ixodes scapularis Say were treated with spores of the entomopathogenic fungus Metarhizium anisopliae Metschnikoff in the laboratory and in the field. An M. anisopliae suspension containing 4 × 109 spores per milliliter caused 96% mortality in the laboratory, versus 53% mortality among field-treated ticks. The LC50 value for unfed adult I. scapularis in the laboratory was 4 × 107 spores per milliliter. Our results indicate that M. anisopliae was highly pathogenic to unfed adult ticks and showed potential for controlling questing adult I. scapularis.

Michael A. Benjamin, Elyes Zhioua, and Richard S. Ostfeld "Laboratory and Field Evaluation of the Entomopathogenic Fungus Metarhizium anisopliae (Deuteromycetes) for Controlling Questing Adult Ixodes scapularis (Acari: Ixodidae)," Journal of Medical Entomology 39(5), 723-728, (1 September 2002). https://doi.org/10.1603/0022-2585-39.5.723
Received: 26 July 2001; Accepted: 1 December 2001; Published: 1 September 2002
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KEYWORDS
biological control
blacklegged tick
entomopathogenic fungi
Ixodes scapularis
Lyme disease
Metarhizium anisopliae
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