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Craig,
Thanks for interest and info. A bit of
web searching has revealed that there are 170 some Bt toxins. Of the
handful of articles I have looked at, it appears that there are widely different
toxicities to the various Bt GMO forms. I'm not sure I believe all the
numbers. One study reported larval toxicity at hundreds of ppm and adult
toxicity around 10 ppb. A 2007 EPA required study showed tox in the
low ppb range. One has to look at how the research was done and compare
that to bee behavior, etc. to know how likely the bees are to be
exposed.
Results are mixed as might be expected, but with
the great number of natural Bt toxins (~170) and the potential for
unintended/unanticipated genetic variations caused by or related to the GMO
insertion, it is like playing Russian roulette once the "cat is out of the
bag"
Our impacts due to conventional pesticides pale in
contrast to the risks from irretrievable genetic characteristics once
released.
Below are a few of the easily found
sites.
Regards,
Chuck
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