ocba AT lists.ibiblio.org
Subject: Orange County, NC Beekeepers
List archive
- From: Randall Austin <ra41717 AT gmail.com>
- To: Catherine Wright <catherine.wright AT gmail.com>
- Cc: ocba AT lists.ibiblio.org
- Subject: Re: [ocba] nosema questions
- Date: Mon, 06 Apr 2015 15:13:08 -0400
Catherine,
Your question sparked my curiousity, because while I know nosema spores aren't virtually indistructible the way that American Foulbrood spores are (and they are different type creatures, anyway), I didn't know how long they'll live outside of a bee's body. I found this posting by Eric Mussen, who recently retired from UC Davis as California's state apiculturalist and is a person to be listened to: The spores of both nosema species are susceptible to irradiation or fumigation with glacial acetic acid (details in The Hive and the Honey Bee). Otherwise the spores of apparently Europe-originated N. apis are very resistant to the elements, except sunshine, and persist for many years. Nosema ceranae, on the other hand, originated in tropical Asia, and its spores are susceptible to weather, especially cold weather. The spores can be killed by refrigeration or by freezing. If possibly spore-contaminated combs are placed in a freezer and left there until it is certain that all materials in the combs have reached freezing temperatures (honey holds a lot of heat for quite a while), N. ceranae spores, all life stages of greater wax moth, all stages of small hive beetle, and other little critters that tend to get into stored combs will be eliminated.A few things to note:
Randall Austin On 4/6/2015 1:10 PM, Catherine Wright wrote:
|
-
[ocba] nosema questions,
Catherine Wright, 04/06/2015
- Re: [ocba] nosema questions, Randall Austin, 04/06/2015
Archive powered by MHonArc 2.6.24.