HAVE VARROA MITES BECOME RESISTANT TO FLUVALINATE?

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Presentation transcript:

HAVE VARROA MITES BECOME RESISTANT TO FLUVALINATE? KOOTENAY REGION HAVE VARROA MITES BECOME RESISTANT TO FLUVALINATE?

WHY THE CONCERN? 1. Heavy over-winter losses 2. Spring build-up failures 3. High varroa infestation in spite of treatment

CRESTON VARROA MITES

TEST DESIGN Cover a wide geographical area and include both commercial and hobby beekeepers. Test following honey removal – no mite treatment Select strongest colonies for testing. Take three, 24 hour mite drop counts: day 1 and day 10 (Apistan). Day 11 (CheckMite+).

TEST RESULTS

TEST RESULTS

CRESTON NORTH

NELSON

CASTLEGAR

U.S.A. BORDER

CRESTON RESULTS

NELSON/CASTLEGAR RESULTS

U.S.A. BORDER RESULTS

CRANBROOK RESULTS

WYCLIFFE RESULTS

KOOTENAY RESULTS

COUMAPHOS FOLLOWING FORMIC ACID TREATMENT

RECOMMENDATIONS 1. Monitor mite levels 2. Test for mite resistance 3. Vary the mite treatment 4. Use chemicals as prescribed 5. Treat only when necessary

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