In a message dated 4/7/2010 10:17:05 P.M. Mountain Daylight Time,
[log in to unmask] writes:
At least Jerry is now
agreeing with me that nosema cerane is involved (which if you look back
into
the archives was not the case in 2007 discussion)
I may have said that N. ceranae was in all hives, but I've never said it
didn't have anything to do with CCD. IF you remember, the samples that I
took from CCD colonies in 2006-2007 were the ones that Joe DeRisi analyzed,
then reported - where he pointed to N. ceranae and the work in Spain as a
possible explanation of CCD. As you remember, he reported N. ceranae before
anyone else admitted to having seen it in North America.
So, I've never discounted N. ceranae. I have and still continue to
disagree with claims that IAPV is a reliable marker or cause of CCD, and I don't
thing N. ceranae per se causes CCD.
You also missed my point about drenching and HBH. We did have heavy
Nosema infestations in a set of colonies that we purposely did not treat for two
years. They did stop taking any feed - nectar, pollen sub, even syrup.
But, a dash of HBH, and they started eating again. We didn't have to
drench. So don't discount this, if you haven't tried it. As I said, you can
test it with a couple of colonies, if they go back to eating, then feed.
As per high Nosema spore counts - I've now seen bees with huge spore
counts, confirmed by PCR to be N. cernae, and the colonies look good - from
Hawaii and scattered locations in the midwest and southern states of the
continental U.S.
Now, as to the value of knowing N. apis from N. ceranae - if you've got
high spore counts late summer, fall, early winter - odds are its N. ceranae.
But at this time of the year, it could be either, and N. apis seems to be
easier to control. So there is some use to knowing. If you read my
e-mail, I offered free screening for the exchange of a box of sick bees - seems
cheap enough to me.
As a researcher, I'm looking for bees infested with one, the other, or both
Nosemas for testing. I need to know which I have.
Jerry
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