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Informed Discussion of Beekeeping Issues and Bee Biology

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Subject:
From:
Geoff Manning <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Tue, 9 Sep 2014 16:48:37 +1000
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On 8/09/2014 10:46 PM, randy oliver wrote:


>
> Dr Eric Mussen related to me many years ago about experiments that he had
> run, attempting to infect larvae with AFB.  He found that it took a LOT of
> spores to infect larvae, and discounted transmission via hive tools.

My understanding from Michael Hornitzky's work was that the number of 
spores required to be infective depended on the age of the larvae.  
Younger larvae required considerably fewer.

Geoff Manning

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