In a message dated 10/04/2008 23:47:54 GMT Standard Time,  
[log in to unmask] writes:

I have  found some N. ceranae in all my stocks and each group has had some 
hives  crash. 


How do you know its Ceranae?  The experienced Lab workers at the  Central 
Science Laboratory find the 2 sorts are so similar that they check their  results 
with a PCR device.  I recently attended a microscopy workshop at  which we 
could make slides and compare  both sorts using material kindly  supplied by the 
CSL. They look very similar indeed and, unless you had both  kinds on the 
same slide it would be very difficult to make an accurate visual  diagnosis.
 
Chris



   

****************************************************
* General Information About BEE-L is available at: *
* http://www.honeybeeworld.com/bee-l/default.htm   *
****************************************************