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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