Thank you for your fast response. Just ordered a used
book from a library in England by abebooks.com for
55$CA. Like so much buying books...
I also like those multinational publications with
knowledge updates from different countries. Just
regret I stil haven't seen Montana !

Merci encore !

Hervé


--- Jerry Bromenshenk <[log in to unmask]> a
écrit :
> Dee Lusby writes:
> >Amazing how the broodnest with proper sized comb
> >acts like a living liver cleaning up disease and
> parasisitc
> >mite problems with the help of the workers at this
> period
> >of time each year
>
> I know that Dee understands that this analogy can be
> pushed further.  After
> 30 years of analyzing chemicals inside beehives
> throughout the U.S., we
> well understand that the wax combs reflect the
> chemical environment, not
> only chemicals used inside the hive, but also those
> from the outside
> environment -- agri-chemicals, industrial
> pollutants, emissions from
> vehicle exhausts, etc.
>
> Much of that ends up in wax.  Recently, a comment
> was made on this list
> that USDA researchers had new information about mite
> treatment residues in
> combs and mite resistance, and were going to
> recommend rotating brood combs
> into the honey supers.
>
> USDA is just catching up with the sampling
> technologies that we've used for
> 10 years -- amazing what you find in a beehive with
> new generation, more
> sensitive instrumentation.
>
> Ok, I hope that the comment about a recommendation
> for moving frames was in
> error.  Many of these chemicals will last for
> extraordinarily long times
> when sorbed into wax.  Moving 'contaminated' brood
> frames into the honey
> supers won't necessarily 'clean' them up.  You will
> get some dilution and
> dispersion, due to bees rebuilding part of the cells
> with new wax, and
> depending on how the chemicals partition, you may
> export some into your honey.
>
> In terms of developing resistance, this should
> really speed that process
> up.   Spread the chemical out in more dilute form
> throughout the hive.  Not
> a tactic that I would employ.
>
> Cheers
>
> Jerry
>
> P.S.  If you want a quick overview of chemicals in
> beehives, run down a
> copy of the following book:
>
> Honey Bees: Estimating the Environmental Impact of
> Chemicals
> James DeVillers and Minh-Ha Pham-Deleque
> Taylor and Francis, London and New York
> 2002
>
> Contains 332 pages on this topic and issues like
> Imadacloprid, Transgenic
> materials, etc.
>
> In this book, we published our findings for Volatile
> and Semi-Volatile
> Organic Compounds in the Air inside beehives located
> in Montana and north
> of Baltimore, Maryland.  Most of the nastiest
> chemicals are
> industrial/urban, with a few military unique
> compounds due to our work at
> Aberdeen Proving Ground.
>
> I did a fast count,  we produced 12 pages of fine
> print tables listing
> chemicals found -- and we weren't looking for
> miticides.
>
> In other technical reports, we itemize
> concentrations of trace elements and
> heavy metals, trace quantities of radio-active
> materials, and lots of
> pesticide residues found in these same colonies  (~
> 80-120 colonies per
> year, 3-4 sampling periods per year, wide spectrum
> chemical sweeps looking
> at chemicals in/on bees, pollen, and the atmospheres
> inside beehives.
>
> Our organics chapter is:
>
> Smith, G.C., J.J. Bromenshenk, D.C. Jones, and G.H.
> Alnasser.  Chapter
> 2  Volatile and semi-volatile organic compounds in
> beehive atmospheres.
>
> Finally, I suggest getting a library copy -  the
> book is in limited
> distribution and pricey.  We got 1 free copy, had to
> order more, so I know
> what it costs.
>
>
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