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Date: | Thu, 9 Jun 2011 20:21:31 -0400 |
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On 6/9/2011 11:56 AM, allen wrote:
> I am particularly worried about unoccupied brood chambers in storage for a season.
>
My initial infestation came from a neighbor who brought in nucs from
SC. I noticed the beetles first in nucleus colonies...under the bag
inner cover. Convenient place to hide. A couple weak nucs had small
clutches of SHB larvae, but not big deal. Second year I had a few supers
of honey slimed in the hot room. Not a big loss, just a wake up call.
What happened in the storage barn was different. I had a pallet of brood
combs from that spring's deadouts. When I discovered the problem, there
were beetle larvae crawling across the concrete floor and out the
overhead door to dirt. I never even unwrapped the hive bodies. Just
moved the whole thing to the burn pile and torched it.
The third year I saw a few adult beetles crawling out of a mating nuc
feeder in March. Haven't seen one since and that was 5 years ago. Hot
room hasn't been slimed.
I don't believe SHB can overwinter successfully in the north. I doubt
that SHB pupae can survive in our clay soils. Without constant
re-infestation, what beetles do survive seem unable to breed.
Mike
Champlain Valley
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