Aribi, N.

Loucif-Ayad, W.

Smagghe, G.

Soltani, N.

English

JKI Open Journal Systems (Julius Kühn-Institut)

11th International Symposium of the ICP-BR Bee Protection Group, Wageningen (The Netherlands), November 2-4, 2011 Julius-Kühn-Archiv, 437, 2012 93 II. Bee health issues - country specific experiences including Varroa and varroacides Efficacy of selected acaricides on Varroa destructor and evaluation of their environmental risks on Apis mellifera  W. Loucif-Ayad¹,², N. Aribi¹, G. Smagghe³, N. Soltani¹ ¹Laboratory of Applied Animal Biology, Department of Biology, Faculty of Science, University Badji-Mokhtar, 23000 Annaba, Algeria, Email: wahloucif@yahoo.fr ²Faculty of Medicine, University Badji-Mokhtar, Annaba, Algeria ³Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering,  Ghent University, 9000 Ghent, Belgium DOI: 10.5073/jka.2012.437.023 Abstract  The present study examined the effects of two synthetic (Bayvarol and Apivar) and two natural acaricides (Apiguard and ApiLife Var) on Varroa destructor by controlling the level of mite infestation and on the honeybee Apis mellifera intermissa by measuring the amounts of protein, carbohydrates and lipids in the whole body and hemolymph and acetylcholinesterase (AChE) and glutathione S-transferases (GSTs) activities in the adult stages. The results showed that all acaricides significantly reduced the levels of varroa infestation on adult honeybees and worker brood, but the efficacy was higher for natural acaricides (93–98 %) compared to synthetic acaricides (82–90 %). The amounts of the principal components (protein, carbohydrates and lipids) were significantly different between honeybees treated with acaricides and the control honeybees. All acaricides have no significant effect on AChE activity but led to increase GST activity as compared to controls.  The biochemical components are affected and bees are exposed to toxic stress when acaricides, especially synthetic ones, are used as treatments in hives. Acaricides, especially synthetic ones, affect bees in controlling mites. For these reasons, beekeepers should take into consideration of timing and doses when using acaricides. Kewords: Apis mellifera intermissa, Varroa destructor, acaricides, efficacy, secondary effects.      

Efficacy of selected acaricides on Varroa destructor and evaluation of their environmental risks on Apis mellifera

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Efficacy of selected acaricides on Varroa destructor and evaluation of their environmental risks on Apis mellifera

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