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

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

3. CRESTON VARROA MITES

4. 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+).

5. TEST RESULTS

6. TEST RESULTS

7. CRESTON NORTH

8. NELSON

9. CASTLEGAR

10. U.S.A. BORDER

11. CRESTON RESULTS

12. NELSON/CASTLEGAR RESULTS

13. U.S.A. BORDER RESULTS

14. CRANBROOK RESULTS

15. WYCLIFFE RESULTS

16. KOOTENAY RESULTS

17. COUMAPHOS FOLLOWING FORMIC ACID TREATMENT

18. 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