The efficacy of a formic acid pad formulation was field tested for control of the honey bee parasitic mite Varroa destructor Anderson & Trueman in Florida and Texas. This pad formulation gave 39.8 ± 11.1% control at the end of a 6-wk treatment period, which did not significantly differ from the initial sample date. Coumaphos treatment provided poor control (38.4 ± 11.1%) over the 6-wk period, confirming reports of coumaphos resistance in the region. Under relatively warm winter conditions in southern Texas, formic acid caused mortality of developing eggs and brood. If resistance by V. destructor to the two acaricides registered for its control in the United States continues, the formic acid pad could provide an alternative compound to use as part of an integrated pest management approach. Given the low control seen in this trial, however, modifications of application technology would seem necessary.
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1 October 2004
Formic Acid Treatment for Control of Varroa destructor (Mesostigmata: Varroidae) and Safety to Apis mellifera (Hymenoptera: Apidae) Under Southern United States Conditions
Patti J. Elzen,
David Westervelt,
Raymond Lucas
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Journal of Economic Entomology
Vol. 97 • No. 5
October 2004
Vol. 97 • No. 5
October 2004
Apis mellifera
control
formic acid
honey bee
Varroa destructor