Biocontrol Science and Technology (2003) 13, 715-728

A.-K. Tounou, K. Agboka, H.-M. Poehling, K. Raupach, J. Langewald, G. Zimmermann and C. Borgemeister (2003)
Evaluation of the entomopathogenic fungi Metarhizium anisopliae and Paecilomyces fumosoroseus (Deuteromycotina: Hyphomycetes) for control of the green leafhopper Empoasca decipiens (Homoptera: Cicadellidae) and potential side effects on the egg parasitoid Anagrus atomus (Hymenoptera: Mymaridae)
Biocontrol Science and Technology 13 (8), 715-728
Abstract: The efficacy of Metarhizium anisopliae strain Ma43 and Paecilomyces fumosoroseus strain Pfr12 (both Deuteromycotina: Hyphomycetes) against adults of Empoasca decipiens (Homoptera: Cicadellidae) and potential side effects on the egg parasitoid Anagrus atomus (Hymenoptera: Mymaridae), were investigated in greenhouse cage and laboratory experiments. Treating leafhopper-infested faba bean plants at a dose rate of 1210⁷ conidia mL^m1 resulted in up to 97% mortality 7 days after application and a 100% infection rate. Experiments on the residual effects revealed a significant decrease in adult E. decipiens mortality with increasing time from application to insect release. The decrease in mortality over time corresponded well with data from conidia germination tests. The germination of conidia on agar medium after washing them from the surafce of sprayed plants declined significantly from 95 and 96% immediately after application for M. anisopliae Ma43 and P. fumosoroseus Pfr12, respectively, to 29 and 27% 5 days later. Experiments on potential side effects of the entomopathogenic fungi on A. atomus showed that the tested isolates had no influence on adult emergence and longevity; however, the rates of parasitism were significantly reduced by the fungal treatments. The latter might be due to either density effects and/or could indicate that A. atomus avoids fungal-treated plants. However, the parasitoid is substantially less susceptible to the fungal strains tested than the host itself.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Hans-Michael Poehling, Jürgen Langewald, Gisbert Zimmermann, Christian Borgemeister, Komi Agboka

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Empoasca decipiens	Broad/faba bean (Vicia faba)
Cordyceps fumosorosea (entomopathogen)	Empoasca decipiens
Metarhizium anisopliae (entomopathogen)	Empoasca decipiens
Anagrus atomus (parasitoid)	Empoasca decipiens