>>Those colonies with the heaviest mite loads died first, and they failed
to move upwards as they consumed honey.
One of the common observations during CCD (during warmer weather) was that
colonies failed to cluster properly.  I don't notice that at high varroa
levels, but it may be associated with nosema or virus infection.

Randy Oliver
Grass Valley, CA
530 277 4450
ScientificBeekeeping.com

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