I am interested in this idea of re-capping.

I understand that capping is triggered by the brood producing a capping 
pheromone which makes the workers cap the brood.  The level of the pheromone 
rises dramatically just before the brood is due to be capped (day 8/9) and 
then drops on day 10.  If something interferes with the capping process so 
that it is not capped when the pheromone level is high them it will remain 
uncapped.  Similarly, if  the cappings are damaged by wax moth larvae, then 
the cells will remain uncapped after that as there is no pheromone make the 
workers cap these cells.

So, if workers uncap cells because they know there is varroa in them, what 
makes them re-cap those cells?

Best wishes

Peter
52.194546N, -1.673618W 

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