> The only test I have ever heard of for hygienic behavior in bees
involves as I posted the
> removal of dead brood in a certain time frame. I use the freezing
method of kill and Dennis
> M. used the pin kill method . Both are correct.
Several scientists, from north America, I have spoken to urge caution
with the pin kill method. The reason is that the hemolymph leaks out of
the pin hole. It is suggested that bees will respond to this and uncap
and remove the pupae even if they do not have "hygienic behaviour".
Trevor Weatherhead
AUSTRALIA
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