نتایج جستجو برای: colonies
تعداد نتایج: 21725 فیلتر نتایج به سال:
In a Danish apiary 15 bee colonies were fed honey containing 1.0×10 P. l. larvae spores and examined for two beekeeping seasons. 43 days after the spore feeding, 12 of the colonies showed clinical symptoms of American foulbrood (AFB). Only these 12 colonies were then treated with the shaking method. After the shaking method was carried out a major reduction in the number of spores in the honey ...
Two types of honey bees, Apis mellifera L., bred for resistance to Varroa destructor Anderson & Trueman, were evaluated for performance when used for honey production in Montana, and for almond pollination the following winter. Colonies of Russian honey bees and outcrossed honey bees with Varroa-sensitive hygiene (VSH) were compared with control colonies of Italian honey bees. All colonies were...
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