Hello Peter,

Despite there is a different take on nosema if it kills bees or not by various researchers, under our climatic conditions nosema is a serious disease. It kills bees

We annually monitor 1000's of bee colonies since 2006. We have found that it takes about 2years for nosema to build up if bees are not treated with fumagillin. Sure enough there is no surprise  it kills bee colonies. I have operations that did not treat for 2 years and the bee losses were up to 75%. When you walk to the bee yard or into bee wintering facilities you smell dead bees like rotten meat. Varroa levels in these colonies were almost null but nosema spores were millions of spores. Our research showed that the levels of nosema in spring or early summer can be indicative for troubles in the following winter if you don't treat.

I also have challenged my friend Dr. Guzman when he said nosema does not kill bees. This is true under his conditions in Ontario. We can't generalize this statement about nosema and bee kill. We have to acknowledge that there are regional differences in nosema effects on honey bees. I hear you when you say about cause and effect.   I am open to suggestions from your end to explain the cause of bee kill in cases where nosema spores levels are too high/ millions.


Regards

Medhat Nasr Alberta Canada



This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html