Dear all;
I was following your discussion, however, I was too busy to answer
them sooner.
>Dave wrote:
>Hi Aaron and all,
>I read it as using the powdered sugar as the control
>and not just detection.
Dave read it right. The title of my PhD thesis is  " Detection of
major mite pests of Apis mellifera and development of non-chemical
control of varroasis". In my detection method I did not use powdery
sugar, as my method have higher detection efficiency, for more
information see
http://www.beekeeping.com/articles/detection_varroa.htm

Allen Dick said:

> When dusting with OTC in icing sugar, we were
> always cautioned to be careful not to get the dust
> over the brood area, since we were told that the
> sugar would fall down and dust into open brood --
> and kill it.

OTC is toxic not only to brood, but to bees also. Hence, it is
recommended to dissolve the OTC to 4 -5 litter of sugar when
possible.

Allen wrote:
> Have you seen any effect on the *open* brood?
Yes, there is no adverse effect on colony growth. So
it can not be fetal to open brood. I have published the effect of
dusting on colony growth in my dissertation that consists of eight
articles and the thesis, a total of 110 pages. Two dozen of this
book are available for the most interested beekeepers/ scientific
library for 15 $ (fifteen USD Airmail included). You may send your
request to me directly till the end of this month. During June I will
not be available.
Best regards
Kamran
------------------------------------------------
Dr. Kamran Fakhimzadeh
Department of Applied Biology
P. O. Box 27
00014- Universtity of Helsinki
Tel. +358 40 55 36 791 (Mobile)
Tel. +358 9 191 58393
Fax. +358 9 191 58463