Hi Christina,

The Haber's rule is an interesting question.  Tennekes bases his hypothesis
on it.  Depends upon the mode of action of the toxin, and whether it has a
lasting effect.

If Haber's rule always held true, you would have long ago died from
toxicity of the sodium chloride (salt) that you eat.  And any smoker would
not survive the day.

In the case of imidacloprid, Suchail showed that it is very quickly
degraded (apparently all the way to CO2, and eliminated from the bee).
 Other researchers have shown that it does not appear to have any
measurable lingering effect once cleared.  The Pettis study is the only one
suggesting such an effect on immunity--needs to be followed up.


>The predominant attitude I'm reading here seems to be a pragmatic
one...split and treat, break the brood cycle, split and treat.....this will
dilute the various stressors enough to keep the bees alive.  Won't this
approach ultimately fail?

Works in nature.  Works for Africanized bees.  The long term approach will
be to select for colonies that suppress varroa reproduction.


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

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