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The nonsusceptibility of soil Collembola to insect pathogens and their potential as scavengers of microbial pesticides |
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| Authors: | Meir Broza Roberto M Pereira Jerry L Stimac |
| Institution: | aUniversity of Haifa at Oranim, Tivon 36006, Israel Work conducted while Meir Broza was a visiting scientist at the University of Florida bDepartment of Entomology and Nematology, University of Florida, Gainesville, Fl. 32611-0620, USA cPresent address: USDA-ARS, Center for Medical, Agricultural and Veterinary Entomology, 1600 SW 23rd Dr., Gainesville, FL 32604, USA |
| Abstract: | Collembola are very abundant soil insects which contribute to the decomposition of organic matter. This paper presents data on the interaction between Collembola and selected microbial agents being tested or used as biological pesticides. The Collembolan, Folsomia candida, was not susceptible to the entomopathogenic fungi Beauveria bassiana, Metarhizium anisopliae, Hirsutella spp., and Verticillium lecanii, or to the bacterium, Bacillus thuringiensis, and its endotoxins. F. candida consumed and inactivated the insect pathogens without suffering mortality, reproductive disturbance or any other harmful effects. Consumption of insect pathogens demonstrates the potential of the Collembola as scavengers of biological insecticides artificially introduced into the environment. |
| Keywords: | Collembola Folsomia candida Beauveria bassiana Metarhizium anisopliae Bacillus thuringiensis entomopathogens |
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