Mite treatment while cell building?
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  1. #1
    Join Date
    Feb 2015
    Location
    Salt Lake City, UT
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    1,473

    Default Mite treatment while cell building?

    1) Apivar during a cell building phase?

    2) OAV during cell building phase.

    My cloake board cell builder needs to be treated.
    Zone 6B

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  3. #2
    Join Date
    Jan 2020
    Location
    Canandaigua, New York, USA
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    112

    Default

    This is a good question. Seems like the more challenging a question, the fewer the responses.
    Ask about the best way to introduce a queen or any other basic questions and you'll have lots of answers.

  4. #3
    Join Date
    Jun 2013
    Location
    Greenville, NC, USA
    Posts
    216

    Default Re: Mite treatment while cell building?

    OAV can be used most anytime....best results when no brood and all bees are home. I have an an access from the back so I can treat at night when it's a little cooler.

  5. #4
    Join Date
    Feb 2012
    Location
    Earlysville, Virginia USA
    Posts
    165

    Default Re: Mite treatment while cell building?

    I have done OAV on cell builders and hives with virgins with no noticable problems.

  6. #5
    Join Date
    Sep 2016
    Location
    Denver Metro Area CO, USA
    Posts
    2,406

    Default Re: Mite treatment while cell building?

    I would not put apivar in a cell builder
    Dr. Eric Mussen and I were in the audience in 2011 when Elizabeth Dahlgren [54] presented her research on the comparative effects of miticides upon virgin queens and workers. We immediately turned to each other when she said that unlike with other tested synthetic miticides, to which workers are more susceptible than queens, that queens appeared to be more susceptible to amitraz than were workers. Consider the implications—the subtle effects of amitraz on queens might go unnoticed if all one is looking for is whether there is worker mortality.

    And when I checked the literature, I came across a mention that Lubinevski [55] in Israel observed that fumigation with amitraz for varroa often led to the supersedure of queens. All I hear about these days is how queens in some operations have such poor survivability (Fig. 6). Could amitraz be involved?

    Delaplane and Berry [56], in addition to apparent behavioral effects on workers, noted a fourfold increase in supersedure cells in colonies treated with Taktic.

    Of perhaps greatest concern, Pettis [57] has reported at recent conferences that treatment with amitraz at any of three tested doses may cause up to half of a queen’s stored sperm to become non viable. Again, I do not wish to be alarmist, but in recent months, the above findings have really gotten me questioning whether colonies suffer more of a hangover from off-label amitraz treatments than we have been aware of.
    http://scientificbeekeeping.com/amit...ects-on-queens
    "oh well, let us stick to science. let them have their beliefs and intuitions!" -Medhat Nasr

  7. #6
    Join Date
    Aug 2014
    Location
    England, UK
    Posts
    2,148

    Default Re: Mite treatment while cell building?

    Quote Originally Posted by crab414 View Post
    This is a good question. Seems like the more challenging a question, the fewer the responses.
    Ask about the best way to introduce a queen or any other basic questions and you'll have lots of answers.
    That's quite a judgement to make after just 6 hrs.

    1) Apivar during a cell building phase?

    2) OAV during cell building phase.

    My cloake board cell builder needs to be treated.
    Can't comment on Apivar - as I've never used it.

    With VOA - pick your moment. As soon as one batch of q/cells are capped - off with the C/Board and whack some in.

    If you're doing a sequence of treatments (recommended) then I'd be tempted to suspend C/Board operations for that period in order to give priority to the host hive - although to be honest, I'd bet it would be safe to dose the bottom box(es) while operating the C/Board above. Experiment ?
    LJ
    A Heretics Guide to Beekeeping http://heretics-guide.atwebpages.com/

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