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Date: | Tue, 2 Nov 1993 19:10:10 EST |
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From file item: BUZZ0793.TXT 7/26/93 9:32AM (Terry Dahms)
> About the "SIOUX HONEY ASSOCIATION PIONEER ..."
>
> During the thirties the Browns developed the famous Brown
> strain of bees that was resistant to American foulbrood. The
> apiary containing these bees was located near their wax rendering
> plant. These bees would rob the combs Sioux members would bring
> to the plant to have melted. Therefore, the bees were exposed to
> American foulbrood from many different sources. This apiary was
> the source of the famous Brown genotype of bees that Dr.
> Rothenbuhler and others have used in their genetic studies on
> American foulbrood resistance in honey bees.
> Bert attended Iowa State College at Ames where he worked with
> Dr. Floyd Paddock and Frank Pellett. The Browns also cooperated
> with Paddock, Pellett and others in the development of bees
> resistant to American foulbrood.
From file item: AUGAPIS.93 9-Aug-93 (Malcolm Sanford)
> A CHALKBROOD/AFB CONNECTION
> Dr. H. Shimanuki, our featured speaker at this year's Florida
> Beekeepers Institute, and colleagues at the Beltsville Bee Lab in
> Beltsville, Maryland were highlighted in a recent spread in
> Agricultural Research, the information organ of the USDA's
> Agricultural Research Service (July 1993). In conjunction with
> their efforts to diagnose diseases in samples sent in by the
> beekeeping industry, Beltsville researchers noticed a decline in
> European foulbrood samples from New Jersey bees (1980-1990) while
> the number of chalkbrood samples remained constant.
>
> Further investigation has shown that Ascosphaera apis, the
> causative organism of chalkbrood disease, produces a substance that
> inhibits growth of bacteria causing both American and European
> foulbrood. This material has been isolated and could provide the
> basis for a new, inexpensive control for both foulbroods. Thus,
> like the bees themselves, the microorganisms found in the nest also
> are interrelated in a complex community.
From the questions of Ray Lackey 1 Nov 1993 13:12
> 1) Does anyone know the temperature/time profile
> necessary to destroy the AFB spores?
> 2) I've read of using paraffin to treat hives for
> preservation. Does the temperature of the paraffin dip
> destroy the AFB spores or suitably seal them away from bees?
> 3) Does anyone have a different way of treating for AFB
> spores in a small way?
It seems the Nick Wallingford talk giving the usual way of life
with AFB in NZ answers more or less (temper.?) the two first questions.
See : Paraffin wax dipping... Date: Tue, 2 Nov 1993 20:40:00 +1300
During 40 years I knew bees and bees world in Belgium, I never ear about AFB.
We got here mite Acarapis (end about 1962), Varroa (we have it), Wax Moth
(2 sp), we've chalkbrood (difficult to get pollen without some white stones).
=> This year we had 2 hot-beds of AFB (7 km between the 2). The
beekeepers didn't know each other.
Asking Pr. Van Laere who centralizes the different cases : he found a case
of two by one or 2 years in whole Belgium.
My questions :
4/ Does anyone know about this resistant to AFB line of bees ?
5/ Does anyone know the researcher (and may be paper, I don't find
anything) who works on the relation chalkbrood - AFB ?
6/ Does anyone can explain how these isolated cases could arrive ?
7/ Does anyone know about a serious epidemiological investigation
on AFB (including bees lines and usual beekeeper works)
Thanks for your minds.
Regards JMVD
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Jean-Marie Van Dyck email : bitnet jmvandyck@bnandp51
B.P. 102 internet [log in to unmask]
B-5000 NAMUR (Belgium) School Med. - Physiol. Chem. dept
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