> >Could the levels fall below the 3.0 pbb and still have caused the kill?
>

I'm so sorry to hear, Anthony.   As I've detailed in some of my articles on
pesticides, when I've done the math on residue levels in dead bees vs LD50
values, they often don't come up high enough to clinch the case.  I
strongly suspect that we need to reevaluate LD50 values, especially in the
case of chronic exposure.

What I'd like to see is data for each pesticide in which a test crop was
sprayed to the point that there was observed bee kill at the entrances of
nearby hives.  Then take samples of those dead bees and allow them to sit
at ambient temperature.  Then take subsamples every day to determine the
measurable level of the a.i. in each sample.  Such data would help us
greatly in determining, after the fact, which pesticide actually caused the
kill.


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

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