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Subject:
From:
Juanse Barros <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Fri, 27 Nov 2009 12:46:44 +0100
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Are all modern Canolas, transgenic canola containing Bt ?
http://www.plantphysiol.org/cgi/reprint/112/1/115.pdf

What about the relation between canola's Bt and Nosemas in bees?

http://en.wikipedia.org/wiki/Diseases_of_the_honey_bee
It has been reported that exposure to
corn<http://en.wikipedia.org/wiki/Maize>pollen containing genes for
*Bacillus thuringiensis<http://en.wikipedia.org/wiki/Bacillus_thuringiensis>
* (Bt) production may weaken the bees' defense against
*Nosema*[5]<http://en.wikipedia.org/wiki/Diseases_of_the_honey_bee#cite_note-sciam-4>.
In this study, it is stated that in relation to feeding a group of bees with
Bt corn <http://en.wikipedia.org/wiki/Bt_corn> pollen and a control group
with non-Bt corn pollen, that: "in the first year the bee colonies happened
to be infested with parasites (microsporidia). This infestation led to a
reduction in the number of bees and subsequently to reduced broods in the
Bt-fed colonies as well as in the colonies fed on Bt-toxin-free pollen. The
trial was therefore discontinued at an early stage.This effect was
significantly more marked in the Bt-fed colonies. (The significant
differences indicate an interaction of toxin and pathogen on the epithelial
cells of the honeybee intestine. The underlying mechanism which causes this
effect is unknown.)"

http://www.bioone.org/doi/abs/10.1603/0022-0493-94.6.1361?journalCode=ecen



-- 
Juanse Barros J.
APIZUR S.A.
Carrera 695
Gorbea - CHILE
+56-45-271693
08-3613310
http://apiaraucania.blogspot.com/
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