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Subject:
Re: The bane of Overwintering Success
From:
Randy Oliver <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Sat, 5 Dec 2020 07:07:03 -0800
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> Has any research ever looked at the mite levels in these winter nests? Do
we understand how long a mite can live parasitically on adult bees during
the brood breaks?

Varroa's original host, Apis cerana, may only rear drone brood for a short
period in a year.
That means that varroa evolved to be able to survive solely on very hostile
adult bees for nearly a year.
No surprise that they can survive your winter.
Daily natural mortality rate of adult mites is around a half a percent per
day.

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


>

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