Evaluation of cupric sulphate as an acaricide against Varroa jacobsoni O.

publication date: May 4, 2011
Send a summary of this page to someone via email.
Journal of Apicultural Research
Vol. 28 (4) pp. 201-207
Date
December 1989
Article Title

Evaluation of cupric sulphate as an acaricide against Varroa jacobsoni O.

Author(s)

Georges Guiraud, Myriam Nectoux, Jean-Francois Andrei, Michel Bounias And Dragutin Popesković

Abstract

Field trials on hives showed that cupric sulphate mixed at 0.25-1 g/l with sucrose syrup yielded significant control (>70% mortality) of the parasitic mite, Varroa jacobsoni, in low or moderately infested areas, in spring-, autumn- and winter-feeding treatments. Pure sucrose may also exhibit a light effect (15-29% mortality). Syrups are freely ingested up to 0.35 g/l and the uptake decreases at 0.5-1 g/l, with no uptake observed at higher concentrations. Only slight bee mortality (<0.1%) is observed at 1 g/l (low volumes) or at 0.5 g/l (large volumes). Copper residues in honey never significantly increased from natural levels, following total uptakes of up to 3g per hive, within 1 to 7 months delay.

Keywords

Varroa, Varroa Jacobsoni, Cupric Sulphate, Acaricide Treatatment

Full text
pdf
Free to Subcribers button     Buy Now for £5 button