Free Access
| Issue |
Apidologie
Volume 31, Number 3, May-june 2000
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|
|---|---|---|
| Page(s) | 437 - 441 | |
| DOI | https://doi.org/10.1051/apido:2000134 | |
DOI: 10.1051/apido:2000134
Apidologie 31 (2000) 437-441
Control of Varroa jacobsoni Oud. resistant to fluvalinate and amitraz using coumaphos
Patti J. Elzena - James R. Baxtera - Marla Spivaka,b - William T. Wilsona
aUSDA-ARS, Kika de la Garza Subtropical Agricultural Research Center, 2413 E Hwy, 83, Weslaco,
TX 78596, USA
b219 Hodson Hall, 1980 Folwell Ave., Univ. Minnesota, St. Paul, MN 55108, USA
(
Abstract:
We conducted laboratory tests investigating the mortality of mites infesting honey bee colonies in
Minnesota after exposure to fluvalinate, amitraz, or coumaphos. Results indicated that these mites were
not only resistant to fluvalinate, but also to amitraz. Coumaphos was effective against these resistant
mites. A separate field trial was conducted with the same hives as those used in the laboratory test. The
field trial supported the laboratory results, showing that mites in Minnesota are resistant to both
fluvalinate and amitraz, and that coumaphos is effective in controlling these mites. This represents the
first known reported case of amitraz resistance in Varroa jacobsoni in the U.S.A.
Keywords:
Varroa jacobsoni / resistance / fluvalinate / coumaphos / amitraz
Correspondence and reprints: Patti J. Elzena
E-mail: pelzen@weslaco.ars.usda.gov
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