2002•International Journal of AcarologyRequires access

Pathogenicity of the fungusBeauveria bassiana(Balsamo) toAmblyomma Americanum(L.) andDermacentor variabilis(Say) ticks (Acari: Ixodidae)

Sankaralingam Gomathinayagam, Kenwyn R. Cradock, Glen R. Needham

Abstract

Amblyomma americanum (L.) and Dermacentor variabilis (Say) ticks (Acari: Ixodidae) were challenged with the fungus Beauveria bassiana (Balsamo) Vuillemin (Deuteromycetes: Hyphomycetales). After two weeks 100% mortality was seen in A. americanum exposed to conidial concentrations of 3.04 x 107 and 3.04 x 108 respectively. None of the D. variabilis had been killed. After five weeks 100% mortality of D. variabilis was achieved at the same concentrations. B. bassiana has potential for inclusion in tick management programs

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Key concepts: Amblyomma americanum, Dermacentor variabilis, Ixodidae, Biology, Acari, Beauveria bassiana, Bassiana, Parasitiformes