CYMIAZOLE, A SYSTEMIC ACARICIDE THAT CONTROLS ACARAPIS WOODI (RENNIE) INFESTING HONEY BEES. I. LABORATORY TESTS

An Easy Dissection Technique for Finding the Tracheal Mite, Acarapis Woodi (rennie) (acari: Tarsonemidae), in Honey Bees, with Video Link*

Since the introduction of varroa mites (Varroa destructor Anderson and Trueman, 2000), the impact of tracheal mites on bees has been largely overshadowed or ignored. Tracheal mites are still present in bees, and may be responsible for some unexplained colony losses. If they cause bee mortality, it is important to be able to identify their presence and at what levels. This paper illustrates a qu...

The Occurrence of Acarapis dorsalis, Acarapis externus and Acarapis woodi Mites in Honey bee Populations Surrounding Poitiers, France

Toxicity of neonicotinoid insecticides to honey bees: laboratory tests

Toxic effects on Apis mellifera L. of the neonicotinoid insecticides Thiametoxam, Clothianidin, Acetamiprid and Thiacloprid were tested in the laboratory. Commercial formulations, dispersed in sugar syrup and water, at the highest dose level marked on the label were used to carry out oral and indirect contact trials on each pesticide. Clothianidin and Thiametoxam caused higher mortality than th...

Functionality of Varroa-resistant honey bees (Hymenoptera: Apidae) when used for western U.S. honey production and almond pollination.

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...

Acaricide, Fungicide and Drug Interactions in Honey Bees (Apis mellifera)

BACKGROUND Chemical analysis shows that honey bees (Apis mellifera) and hive products contain many pesticides derived from various sources. The most abundant pesticides are acaricides applied by beekeepers to control Varroa destructor. Beekeepers also apply antimicrobial drugs to control bacterial and microsporidial diseases. Fungicides may enter the hive when applied to nearby flowering crops....