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Subject:
Re: suicide bees ( was IMD )
From:
Peter L Borst <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Fri, 3 Apr 2009 10:47:22 -0400
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On Fri, 3 Apr 2009 08:14:11 -0400, Bill T <[log in to unmask]> wrote:

> Wonder if it happens with other social insects?


> We demonstrate that parasitized workers of the bumblebee Bombus terrestris L. stay in the field 
overnight rather than returning to their nest. This behaviour retards the development of the parasite 
and reduces the chances of successful development. In choice experiments, parasitized foragers actively 
seek out cold temperatures. This behaviour therefore enhances colony success by prolonging the life of 
parasitized workers while at the same time reducing parasitoid fitness.

"Exploitation of cold temperature as defence against parasitoids in bumblebees"
CHRISTINE B. MÜLLER & PAUL SCHMID-HEMPEL

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