>
> >This is the first case in the world that
> documents colony collapse of beehives due to N. ceranae in professionals
> beekeepers' hives and field conditions.


Peter, have you posted to the List the recent paper about the different
strains of nosema?  It will be interesting to see if they differ in
virulence.

Also, could you please tell us if the paper describes the symptoms of
collapse?  Especially the off feed.

Yesterday I processed six samples of bees from colonies that had either died
over winter with dead bees on the bottom board, or that were alive but with
dead bees out front.  Some had N ceranae, most didn't.  None had spore
counts over 10M.

I've been checking any piles of dead bees all year, and seldom find any
nosema in them.

I am emphatically NOT dismissing N ceranae as a problem.  I'm just saying
that most of the time that I suspect it, it is not present, or at very low
levels.

Randy Oliver

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