Re: Something needs to change - looking for suggestions
I read that report on the CAP study. What is in it is nowhere near as significant as what was not in it. The conclusions were obvious. Site affects survival. They did not figure out why site affects survival. Total pesticide exposure affects supersedure rate at a minor level.
I submit that they will find that total varroa load correlates very strongly with both supersedure rate and total survival rate.
What was missing? There was no effort to control varroa whether by using varroa tolerant genetics or by chemical means. Without some effort at varroa control, varroa effects overwhelm all other events in the colony by the second year. Varroa load increases as brood rearing interval increases therefore warmer climate areas see increased losses. Varroa load affects wintering ability, therefore cold climate regions see increased losses "in the winter".
DarJones - 46 years, 16 colonies (max 40), sideliner, treatment free since 2005, 11 frame broodnest, small cell