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Revista de la Sociedad Entomológica Argentina
versión impresa ISSN 0373-5680versión On-line ISSN 1851-7471
Resumen
MARCANGELI, Jorge et al. Research on Amivar® efficacy against Varroa destructor (Mesostigmata: Varroidae) in honey bee colonies of Apis mellifera (Hymenoptera: Apidae). Rev. Soc. Entomol. Argent. [online]. 2005, vol.64, n.1-2, pp.29-33. ISSN 0373-5680.
The aim of this work was to evaluate the acaricide efficacy of Amivar® (amitraz, Apilab, Argentina) to control Varroa destructor Anderson & Trueman, in Apis mellifera colonies during the autumn 2003. Work was done at "Centro de Extensión Apícola" experimental apiary located in Coronel Vidal, province of Buenos Aires. Twenty Langstroth hives were used divided in two equal groups. The first group received one strip of Amivar® (amitraz, 1 gr) in the center of brood area. The second one represented the control group. Dead mites were collected weekly from special floors designed to avoid mite removal by adult honeybees. Then, a total of three doses of 5 ml of Oxavar® at seven days period (64.6 g/l oxalic acid in destilled water) were placed in each colony to kill remanent mites and the acaricide efficacy was calculated. Amivar® showed an average acaricide efficacy of 85.05%±3.39 (range=79.5 91.6), showing significant differences with control group (p<0.05). No negative effect on honeybee brood was recorded. These results suggest that Amivar® is effective to control the parasite.
Palabras clave : Varroa destructor; Apis mellifera; Amivar®; Amitraz; Control.