In a message dated 01/05/2007 17:39:10 GMT Standard Time, [log in to unmask]  
writes:

With a  potential for increased "preventive" treatment procedures using 
fumagillin  against Nosema ceranae,


Peter,
 
I don't think fumidil can be used as a preventative, and I assume that you  
don't either as you put the word in quotes.  It may prevent it multiplying  as 
rapidly where it is already present (therefore too late to prevent) and so be  
of some use, but if it is already present it is likely that it has reached 
the  spore stage and so beyond reach of fumidil. The spores will infect new 
young  bees as they clean combs and so the cycle will go on unless you break it by 
 providing clean combs or foundation/strips.
 
Chris



   

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