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Sun, 16 Jun 2019 09:04:56 -0700 |
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Hi Bill,
Yes, unusual-looking, especially in a hive with low mite counts.
With VSH, it would be rare to see such a high proportion of pupae being
removed, as well as those dark spots.
The spots don't look like "normal" melanization. With VSH, I normally
don't observe any melanization taking place--the pupae remain white until
completely removed. This is opposed to regular hygienic removal of dying
pupae, in which case melanization is often observed in the
partially-removed carcasses.
And very odd for the signs to disappear without recurrence! Now wondering
about it occurring in only the first generation of brood in a
newly-established hive.
--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com
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