Publication Type

Journal Article

Journal Name

Entomophaga

Publication Date

12-1-1990

Abstract

Adult Glossina morsitans morsitans exposed to wet conidia of Beauveria bassiana and Metarhizium anisopliae suffered high mortalities ranging from 90 to 100% by 2 weeks post-exposure. Infected ♂ ♂ maintained in the same cages with non-infected ♀♀ throughout the experimental period transmitted the fungal infection to the ♀♀ resulting in mortalities of 65% with B. bassiana and 55% with M. anisopliae. Likewise, infected ♀♀ maintained together with non-infected ♂♂ transmitted the infection to the ♂♂ resulting in mortalities of 75% with B. bassiana and 45% with M. anisopliae. Female tsetse flies infected with B. bassiana and M. anisopliae and maintained in the same cages with non-infected ♀♀ also transmitted infection to the non-infected tsetse resulting in mortalities of 62% and 48% with B. bassiana and M. anisopliae respectively. Infected tsetse exposed to non-infected tsetse of the opposite sex for only 30 min were also able to transmit the fungal infection. Pupae produced by female tsetse infected with B. bassiana and M. anisopliae exhibited higher pupal mortality than those produced by non-infected ♀♀. However, pupae exposed directly to dry spores of B. bassiana and M. anisopliae had no increase in pupal mortality but adults emerging from the B. bassiana-exposed pupae had markedly reduced longevity. © 1990 Lavoisier Abonnements.

Keywords

Beauveria bassiana, biocontrol, Glossina morsitans morsitans, Metarhizium anisopliae, transmission

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