The earliest papers documenting varroa mites tolerant to fluvalinate
were in Italian. They are in the reference list of a review paper in
English:
Watkins, Max. 1996. Resistance and its relevance to beekeeping.
Bee World 77(4) 15 - 22.
I don't know of published references, but varroa resistant to amitraz
and (from a different area) coumaphos are reported to have been detected
in Europe.
Kerry Clark, Apiculture Specialist
B.C. Ministry of Agriculture, Fisheries and Food
1201 103 Ave
Dawson Creek B.C.
V1G 4J2 CANADA Tel (250) 784-2231 fax (250) 784-2299
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