Hello all. And to Mr. Allen Dick, and Mr. P-O Gustafsson This is in reply to the Q&A posts on canola and the loss of queens. My daughter has worked for a health food store for some time in the past and I have gotten quite a few books on toxic substances and products laying around. I rembered rape and canola or canada being discussed and some of the properties of its industrial oil. This is not my work, I'll be up front with that, these are exerpts from the research done by John Thomas on aging and the metabolic process involved. The rape plant was the origination from which canola was genetically engeneered. Canola containes a cynanide compound called, iso-thio-cyanates, this compound inhibits functions in the body of mitochondrial production of ATP. Canola is also rich in glycosides, these compounds inhibit muscle enzymes from working causing paralysis. And last but not least is Erucic acid which is still being researched. Someone with a medical background may know where to follow up and find more information linking these things to the nectar and or pollen of the canola. It might be interesting to find out if it has a natural birth control effect on the queens, or if the enzymes used to process the queens food become toxic. This is just food for thought. Thank you and good luck Al Boehm Columbus N C . Someone who has more medical background