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Changes of selected biochemical parameters of the honeybee under the influence of an electric field at 50 Hz and variable intensities

P. Migdał,A. Roman,A. Strachecka,A. Murawska,P. Bieńkowski

Published 2020 in Apidologie

ABSTRACT

Two-day-old honeybee workers (± 6 h) were placed in cages and supplied with sucrose solution (1 mol/dm3) ad libitum. Subsequently, the cages with bees were placed in an electric field (E-field) exposure system with field intensities of 5.0 kV/m, 11.5 kV/m, 23 kV/m, and 34.5 kV/m. The duration of exposure was 1 h, 3 h, and 6 h. The biochemical parameters SOD (superoxide dismutase), CAT (catalase), FRAP (ferric ion reducing antioxidant power), and also acidic, neutral, and alkaline proteases in the worker bee hemolymph were analyzed. The E-field increased activities of antioxidant systems, especially SOD, and also the proteolytic systems. In the groups: 11.5 kV/m–time 6 h, 23.0 kV/m–time 1 h, and 34.5 kV/m–time 1 h, FRAP levels were decreased in comparison with the control samples. These findings are discussed in context with possible consequences for honeybee health in urban and rural environments.

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