Some chat about MAQ's on Bee-L.
Hi All,
A member asked me off list for the results of my treatment of 1000 hives
with two MAQS this summer in mid to late August, temps in the 90's, low
humidity.
First, re adverse effects on queens, we noticed about one colony queenless
per yard of 24-30 hives, most often in hives that we had already marked as
having some sort of "issue." My interpretation is that the full MAQS
treatment knocks out iffy queens (the same interpretation as that of David
Vanderdussen). A number of those colonies successfully requeened
themselves.
As far as efficacy, I did not sample completely nor methodically, so these
data are only informational, not conclusive by any means. Nor did I make
any effort to sample the same hives over time.
Random (arbitrary) mite counts (alcohol wash of ~320 bees) from various
yards approx 6 weeks after treatment were
0,3,3,22,0,4,29,0,1,0,3,0,28
Some other local beekeepers noticed the same trend--good knockdown in the
majority of hives, but lack of efficacy in some.
Because of the scattered unacceptably high counts, we followed with a 25g
dose of Apiguard in the broodnest after the above sampling. Results in
October (a week or two after thymol treatment) were:
3,1,1,1,1,1,3,2,0,2,0,1
I feel that the lack of efficacy with the double MAQS in some of the hives
was due to their being 3-4 deeps high (hadn't pulled honey), and us
possibly not placing the strips immediately above the brood. In previous
trials, I got more consistent efficacy when all colonies were doubles
only.
Overall, we found that a one-two punch of MAQS (formic) followed by
Apiguard (thymol) got mites to acceptable levels. We will follow up this
month with a final oxalic dribble.
--
Randy Oliver
http://community.lsoft.com/scripts/wa-LSOFTDONATIONS.exe?A2=ind1311&L=BEE-L&F=&S=&P=29476
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My results had consistent low efficacy in late July / early Aug. See MAQS results archive if interested. I have been to a couple of state meetings recently and talked with a number of large beekeepers about my and their results. Over all I would say that those that had "good" results were in smaller colonies, 1 1/2 and doubles. Some used only 1 strip. Nobody I talked with tested as carefully as I did so reports could only be classified as anecdotal. All noted the heavy toll on brood and on many queens. Temperature seemed less critical than colony size, large colonies had poorer results. More than a few said they would never use them again and a few said they were happy. Everybody noted the difficulty of separating the pads.
I followed up with 2 Apivar strips once suppers were off. Colonies still very large, 15-18 frames.The strips were moved after 3 weeks to keep them in the brood nest as the colonies plugged out and remover at 6 to 6 1/2 weeks. After a very heavy initial drop (well over 1K) I had a gradually reducing drop until the last tests in mid Oct. read 2 to 5 mites on a 72 hour sticky board. I'll do the usual oxalic in early Dec.
I feel like I dodged a bullet this year. My plan going forward is to follow Medhat's advice and do a spring Apivar followed by fall formic (perhaps) and winter oxalic drip.
Paul Hosticka
http://community.lsoft.com/scripts/wa-LSOFTDONATIONS.exe?A2=ind1311&L=BEE-L&F=&S=&P=42192
My own view is that we have another commercially available mite treatment, with the added benefit of being good if you happen to be in the business of selling queens.