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Tue, 18 Jul 1995 17:15:00 -0700 |
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Allen Dick asked for clarification of the advice to reduce tracheal
mites, by making splits, and removing them after a few days flight.
The idea is to make splits from tracheal mite infested colonies, leave
the splits near the parent colonies for a few days, then remove the
splits to a new location. In field trials of this method, the splits
ended up with only about 10 % of the infestation (% of bees with mites)
as the parent hives (both groups had new queens). That's as good as a
chemical treatment.
Possibly it results from the older (infested) bees returning to the
parent hives, while a cohort of relatively less infested bees ended up
in the splits, and continued to out-reproduce the mites.
The parent hives could be treated, or used as "dead-end" units, used for
honey production then killed.
Kerry Clark, Apiculture Specialist
B.C. Ministry of Agriculture
1201 103 Ave
Dawson Creek B.C.
V1G 4J2 CANADA Tel (604) 784-2225 fax (604) 784-2299
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