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Subject:
Re: challenging problem
From:
Zachary Huang <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Wed, 18 Aug 2004 21:43:42 -0400
Content-Type:
text/plain
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On Mon, 16 Aug 2004 14:21:18 -0400, Tim Arheit <[log in to unmask]> wrote:

>
>I don't think so.  Temperatures that high are pretty close to the lethal
>limit for adult bees.  The lethal limit for the Japanese honeybee is around
>118F, and I'd suspect it would be around the same for the European
>honeybee.  Brood I believe is even more delicate.   The inside temperature
>could get well above the outside temperature without the cooling effort.

Newest data from our lab indicate the lethal temp /time combinations for adult bees
are 52 C for 9 min,  49 for 15 min and 47 for 25 min.  Strangely I did not see any data
on this for either bees, nor mites (even though many people in Germany use a
certain temp to cook brood to kill mites, no data was given for a safety window for
bees).

we have not done brood yet.

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