Effect of different fall factors on winter mortality for 408 honey bee colonies found alive or dead the following spring in Ontario, Canada. P based on Chi square tests.
|Factor||Condition5||No. alive||No. dead||%Mort/Total6||P|
|Bee population1||Low||122||77||69.4||< 0.0001|
|Food reserves (kg)||Low||140||75||67.6||< 0.001|
|Varroa mite||Positive||214||95||85.6||< 0.01|
colonies were classified as having low or high food reserves or bee populations if the values for these variables were below (for low) or above (for high) the means obtained from all colonies used in the study (low < 23.6 kg; high > 23.6 kg for food reserves; low ≤ 7 frames with bees; high ≥ 8 frames with bees for bee population; n = 408);