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  1. #1
    Join Date
    Mar 2012
    Location
    Mars Hill, NC
    Posts
    33

    Default dead pupae and deformed wings - is it too late?

    I have 2 hives and this is my 2nd year beekeeping. This year I decided to try sugardusting the bees for varroa treatment for 6 weeks. Today would have been my final day to treat. When I opened the weaker of the two hives I saw a good number of partially developed bees- white pupae - in the cells that had partially chewed off. And amidst all the bees, there were also a number of workers I noticed with deformed wings. I think that despite the sugar dusting (I don't think I'll try that method again) they are severly infested with varroa.

    My question is this: is it too late to treat the hives with something stronger, like Mite-Away Quick Strips or formic acid? It is mid-Oct and I live in the NC mountains - it is now getting pretty cold at night and days are regularly in the 60's. One thing of consideration as well - this hive has been weak all year. This hive made no extra honey during the flow, and ate what they had made within 6 weeks. I've been feeding it non-stop for weeks now (since mid- Sept). Checking in the hive today, I noticed only 6-7 partially filled shallow frames of stores (though I didn't inspect the deep). The other hive has plenty of stores- the suggested 45lbs, and this one I'm afraid doesn't even have 20 lbs.

    I'm afraid this hive is not going to make it - can I do anything for them?

  2. #2
    Join Date
    Jul 2012
    Location
    Kaysville, Utah, USA
    Posts
    392

    Default Re: dead pupae and deformed wings - is it too late?

    Be interested to know the answer to this one, too. My mite count went up from 8/24 hours to 20/24 hours in a little over a month. I'm wondering if I ought to do anything before late fall (or if I even have the time).

    It looks like a lot of the treatments require temperatures to be about 60, or so.
    Last edited by Splatt; 10-09-2012 at 05:42 PM.
    Don't provoke a hive full of angry bees.

  3. #3
    Join Date
    Dec 2002
    Location
    Rhineland-Palatinate, Germany
    Posts
    831

    Default Re: dead pupae and deformed wings - is it too late?

    The only treatment that works, when it is cold, is oxalic acid. Treat them as long as the temperature is above freezing. With a vaporizer you don't have to open your hive, it works from the entrance.

  4. #4
    Join Date
    Dec 2010
    Location
    Ojai, California
    Posts
    966

    Default Re: dead pupae and deformed wings - is it too late?

    FWIW, if they were mine, I'd insulate the hive, treat them with formic acid, and feed them with a patty, essential oils and nosevit. Maybe even fumagilin-B. Those girls are running out of time. When it goes real cold - feed them dry or fondant, no liquid. The light colony may be combined with the newspaper method to a strong colony at worst. I would keep them together, feed them, and keep the entrance down to one bee wide so they don't get robbed. They really are too light going into winter without being fed.

    Dr. Larry Connor recommends weighing a hive with a scale. A hive of 2 deeps, 20 frames with brood, honey, comb, bees, tops and bottom should weigh at least 130 lbs going into winter or it should be fed.

    Were the white dead ones NOT chalkbrood? Could it be that you dusted the hive with too much sugar and killed the brood? It should be only a mist of dust from a sifter a few feet up wind of the open hive in a very gentle wind.

    Incidently, the date to not let get away next year is August 15th. That is when you want to have already whacked your mites. Thymol for a "soft" treatment, formic acid for a harsh treatment, a break in the brood cycle for treatment-free. Watch them into October, treat again if necessary. 24 mites per square inch in 24 hours means they are goners - they will not survive winter. They must be treated and harsh at that point. Those bees will need fumagilin-B just to make sure Nosema apis or nosema ceranae doesn't kill them. If they survive, go to IPM treatments next year. Make lots of queens, breed from the survivors. Best of luck.
    Last edited by kilocharlie; 10-09-2012 at 10:43 PM.

  5. #5
    Join Date
    Mar 2012
    Location
    Mars Hill, NC
    Posts
    33

    Default Re: dead pupae and deformed wings - is it too late?

    Thank you all for your advice. I've decided to treat them and watch their weight..... If worse comes to worst I'll combine. Thankful for the break from freezing weather where I can treat and feed! Maybe it'll hold another few weeks

  6. #6
    Join Date
    Apr 2005
    Location
    havana fl
    Posts
    1,358

    Default Re: dead pupae and deformed wings - is it too late?

    hop guard is not temp sensitive. Also check out the section on feeding thymol and sugar
    Im really not that serious

  7. #7
    Join Date
    Jan 2011
    Location
    Minneapolis, MN USA
    Posts
    55

    Default Re: dead pupae and deformed wings - is it too late?

    Quote Originally Posted by MiddleofMae View Post
    If worse comes to worst I'll combine.
    It might be too late to comment on this, but you may want to think twice before combining a mite-infested hive with a healthy hive. The last thing your healthy hive needs is a few thousand additional mites.

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