Reduction of feeding by Schistocerca piceifrons piceifrons (Orthoptera: Acrididae), following infection by Metarhizium anisopliae var. Acridum.

Abstract

This study examined the effects of Mexican strain (MaPL40) Metarhizium anisopliae var. acridum on feeding and fecal production of adult Central American locusts, Schistocerca piceifrons ssp. piceifrons. Locusts infected with 6 × 104 M. anisopliae conidia per insect showed 97.5% mortality in contrast to 13% in negative control locusts after 12 d of the infection. A significant (P < 0.01) reduction in feeding was observed, as indicated by Cynodon dactylon leaf consumption and feces production at 4 and 3 d, respectively. The data reflect a non-significant pest very early after Metarhizium infection.