>This assumes no pre-existing problems with bee health.

> In my experience many losses are due to problems with
> bee health going into winter.


I've just finished analyzing a data set of 600 hives belonging to 12
different almond pollinators, graded for cluster size in fall, midwinter,
and late January.  Very interesting to analyze--I presented at Calif state
meeting this winter, and will publish next fall.

Bottom line, I agree with you--winter losses for the group appear to be
largely correlated with preexisting problems in late summer/fall.

In my part of the data set (200 hives), the "acute" viruses appeared to be
the number one problem.

--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

             ***********************************************
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

Guidelines for posting to BEE-L can be found at:
http://honeybeeworld.com/bee-l/guidelines.htm