Journal of Food, Agriculture and Environment

Toxic properties and efficiency of ecological and chemical preparations in treatment of Apis mellifera bee colonies


Vidmantas Pileckas, Ramutis Klimas*, Asta Klimienė

Recieved Date: 2014-08-22, Accepted Date: 2014-12-18


The aim of this study was to determine the toxicity and efficiency of ecological (Bienen Wohl) and chemical (Gabon) preparations applied for bee treatment from varrosis under the climatic conditions of Northern Lithuania. In order to determine the level of bee contamination with Varroa destructor mites, bees from three places of a beehive were taken and narcotized with ethereal vapours. The degree of infestation was expressed in per cent and was equal to the number of mites divided by the number of studied bees and multiplied by 100. In order to determine the degree of contamination with mites, at least 200 insects were taken from each bee colony. In order to determine the efficiency of preparations during the autumn feeding, standard plastic underframes with vaseline-anointed sheets of paper (a certain number of mites stay alive after treatment) were put under the combs. After the autumn treatment with Gabon and Bienen Wohl and evaluating toxicity of preparations on bee wintering, the number of dead bees and mites found at the bottom of the hive after flying rout of bees was determined in spring. When using Gabon, 2 strips impregnated with the preparation were place in each of 5 beehives; when using Bienen Wohl 20 ml of the preparation was embedded between the frames of each of 5 beehives. In the case of moderate contamination with mites equal to 10.9±0.6%, during the autumn 1346±281.3 mites dropped away after using Gabon, what made 123.4 mites for one contamination per cent. In the case of moderate contamination with mites equal to 12.1±0.6%, 472±87.7 mites dropped away after treating with Bienen Wohl preparation, what made 39 mites for one contamination per cent. When cleaning the bee families in spring after the flying rout 97±7.5 dead mites and 948±116.8 dead bees (P<0.001) were determined after treating in autumn with Gabon; 125±27.0 mites and 538±167.8 bees (P<0.001) after using Bienen Wohl preparation. Therefore, during autumn chemical preparation had stronger acaricidal effect than ecological preparation (P<0.001). Bienen Wohl had 45.3% less toxic action to bees (P<0.001) and more effect to mites during winter period in comparison with Gabon.


Apis mellifera, Varroa destructor, treatment, Bienen Wohl, Gabon

Journal: Journal of Food, Agriculture and Environment
Year: 2015
Volume: 13
Issue: 1
Category: Environment
Pages: 93-96

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