Do I have AFB?
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Thread: Do I have AFB?

  1. #1
    Join Date
    Apr 2015
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    Everett, Washington, USA
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    Default Do I have AFB?

    Can someone tell me if I have AFB? See photos.Brood2.jpgbrood1.jpg

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  3. #2
    Join Date
    Jun 2015
    Location
    Rib Lake WI
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    Default Re: Do I have AFB?

    Can't diagnose from the pic. They do sell test kits just go and get one. Did you try the match take a match stir the dead larva does it rope out when you pull out the match.

  4. #3
    Join Date
    Dec 2006
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    St. Albans, Vermont
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    8,106

    Default Re: Do I have AFB?

    Not AFB. Could be EFB. Could be early chalk. Not AFB

  5. #4
    Join Date
    May 2012
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    Sacramento, CA, USA
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    5,459

    Default Re: Do I have AFB?

    I would guess possible EFB from the photos.

  6. #5

    Default Re: Do I have AFB?

    Are the larva turning yellow in the cell. I can't tell from the photo.

  7. #6
    Join Date
    Apr 2015
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    Everett, Washington, USA
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    Default Re: Do I have AFB?

    Here are better photos and couple videos -https://drive.google.com/drive/folders/1JbJ5kY3DA2mBtMtK7wbU-eVHzZMSMlui?usp=sharing
    Yes, some larva turns yellow, some brown-ish, some "dries-out"..

  8. #7
    Join Date
    Jan 2003
    Location
    Suffolk, VA
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    4,211

    Default Re: Do I have AFB?

    I'd feed them and then check back in about 1 week.
    Horseshoe Point Honey -- http://localvahoney.com/

  9. #8
    Join Date
    Apr 2013
    Location
    Marshall county, AL
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    3,404

    Default Re: Do I have AFB?

    What do you see that makes you suspect AFB?
    The more I learn about bees, the less I know.

  10. #9
    Join Date
    Aug 2014
    Location
    Hartford Ohio
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    92

    Default Re: Do I have AFB?

    Doesn't AFB show underneath a blacklight?

  11. #10
    Join Date
    Apr 2011
    Location
    ElDorado,Arkansas,USA
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    1,580

    Default Re: Do I have AFB?

    Like the others.EFB maybe but not AFB!!! Give them a little dusting of Terramycin and sugar and you will be good.

  12. #11
    Join Date
    Feb 2013
    Location
    Humboldt Co., California
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    554

    Default Re: Do I have AFB?

    Probably not...no sunken perforated cappings. Does it have an awful odor?

  13. #12
    Join Date
    Sep 2008
    Location
    Mtn. View, Arkansas, USA
    Posts
    2,749

    Default Re: Do I have AFB?

    BPMS, Bee Parasitic Mite Syndrome.
    42 + years - 24 colonies - IPM disciple - Naturally Skeptic

  14. #13
    Join Date
    Feb 2006
    Location
    Herrick, SD USA
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    6,585

    Default Re: Do I have AFB?

    Not AFB
    "People will generally accept facts as truth only if the facts agree with what they already believe."- Andy Rooney

  15. #14
    Join Date
    Mar 2012
    Location
    Catskills, New York, USA
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    1,540

    Default Re: Do I have AFB?

    Agree not AFB. Is this an overwintered hive you are looking at? As stated above it could be EFB, or PMS or some other brood disease. Looking for PMS, is there quanine deposits in the cells? They look like white crystals. If you google Megan Milbrath she has photos of PMS and a good “how to” on diagnosing a dead hive.
    Proverbs 16:24

  16. #15
    Join Date
    Jun 2012
    Location
    Suffolk Co, NY, USA
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    3,625

    Default Re: Do I have AFB?

    Looks like EFB to me.

  17. #16
    Join Date
    May 2011
    Location
    Algoma District Northern Ontario, Canada
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    4,740

    Default Re: Do I have AFB?

    EFB Most brood killed pre capping; only a small percentage die after capping and show signs of bees opening cells. AFB most die after capping and show the sunken cappings and cells being torn open. EFB shows yellowed brood food darkened larva and twisted and awkward in the cell. Eggs and mixed age larvae interlayed with older larvae as they die and are removed.

    lots of varied symptoms due to a variety of secondary bacterial infections that may be present. Easy to pick out when it becomes well advanced and you know what to look for. Easy to overlook and blame the scattered brood pattern on mites or a partially inbred queen, mites, etc.

    It is not easy to get pictures with enough light into the cell bottoms, good focus and sufficient magnification. If the pictures are right they show more than you can see directly with you own eyes.
    Attached Images Attached Images
    Frank

  18. #17
    Join Date
    Apr 2015
    Location
    Everett, Washington, USA
    Posts
    27

    Default Re: Do I have AFB?

    Thanks everyone for the input!! After reading on AFB, EFB and PMS, it looks like I have PMS after all - "Larvae may appear sunken to the side of the cell and may show symptoms of white with some debris at the posterior end" (https://beeinformed.org/2013/10/15/p...-syndrome-pms/)

    I'll put some Formic Acid into a zip-lock with napkins for a week and see how it'll go.

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