Table 1 Frequency (mean ± SE) of mite mortality rate, knockdown rate, and efficacy of Apivar in the tested beekeeping operations from Alberta.

AB-66

Central

Edmonton

0.42 ± 0.06^b

0.009 ± 0.011^a

0.06 ± 0.07^b

0.009 ± 0.015^a

55 ± 7^b

AB-69

South

Brooks

0.31 ± 0.03^b

0.023 ± 0.008^a

0.04 ± 0.04^bc

0.031 ± 0.007^a

40 ± 5^b

AB-73

South

High River

0.26 ± 0.04^bc

0.013 ± 0.011^a

0.31 ± 0.05^cd

0.018 ± 0.01^a

30 ± 7^b

AB-77

South

Oyen

0.19 ± 0.05^c

0.027 ± 0.009^a

0.24 ± 0.06^d

0.037 ± 0.01^a

22 ± 7^b

AB-83

North west

Grim Shaw

0.29 ± 0.07^bc

0.027 ± 0.017^a

0.31 ± 0.1^bc

0.05 ± 0.02^a

40 ± 9^b

AB-92

Central

Clyde

0.8 ± 0.06^a

0^a

0.91 ± 0.09^a

0.012 ± 0.014^a

92 ± 8^a