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Informed Discussion of Beekeeping Issues and Bee Biology

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Subject:
From:
Peter L Borst <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Mon, 6 Jul 2009 22:32:15 -0400
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Lisa Marie Burley writes:

> Acaricide treatments expose not only mites to the chemical, but eggs, larvae, and adult 
honey bees as well. Several studies have shown negative effects of miticides on the health 
of colonies and individuals within the hive. The most alarming findings regarding the use of 
miticides have been the effects on the reproductive physiology of queens and drones. 
Queens exposed to fluvalinate may lead to problems such as queen loss, supersedure, and 
queen mortality.  

> Other reports have shown the negative effects of coumaphos on queens, including high 
mortality, lowered body and ovary weights, decreased sperm numbers in the spermatheca, 
lowered acceptance of larvae grafted for queen cells, and reduced numbers of queens 
functioning in colonies after 6 months. Miticide use in honey bee colonies has also been 
shown to reduce drone survival and production. Etc


[these are not "sublethal effects" pb]

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