Journal of Economic Entomology (2007) 100, 31-38

Jerry D. Ericsson, J. Todd Kabaluk, Mark S. Goettel and Judith H. Myers (2007)
Spinosad interacts synergistically with the insect pathogen Metarhizium anisopliae against the exotic wireworms Agriotes lineatus and Agriotes obscurus (Coleoptera: Elateridae)
Journal of Economic Entomology 100 (1), 31-38
Abstract: We determined that spinosad interacts synergistically with the biocontrol agent Metarhizium anisopliae (Metch) Sorokin to increase the mortality of two wild-collected wireworm species, Agriotes lineatus (L.), and Agriotes obscurus (L.). Bioassays were performed using a M. anisopliae isolate originally acquired from a local wireworm cadaver. M. anisopliae was applied as a soil drench at 3.3 × 10² and 10⁴ conidia per gram sand, respectively. Soil drenches also were prepared using a commercial formulation of the actinomycete toxins spinosyn-A and spinosyn-D (common name spinosad) at sublethal doses of 1.5, 3, and 6 ppm active ingredient per gram sand. Combined treatments of spinosad and M. anisopliae were synergistic in causing mortality for all spinosad concentrations. Wireworm feeding activity was reduced after exposure to both spinosad and M. anisopliae and was found to be concentration dependent. The high mortality and reduced rate of wireworm feeding suggest that spinosad and M. anisopliae treatment combinations should be tested in the field.
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Link to article at publishers website
Database assignments for author(s): Mark S. Goettel, Jerry D. Ericsson, Judith H. Myers, James Todd Kabaluk

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
control - general
Research topic(s) for beneficials or antagonists:
formulation/storage of bioagents
application technology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Agriotes lineatus
	Agriotes obscurus
Metarhizium anisopliae (entomopathogen)	Agriotes lineatus
Metarhizium anisopliae (entomopathogen)	Agriotes obscurus