Treating honey bees with an extremely low frequency electromagnetic field and pesticides: Impact on the rate of disappearance of azoxystrobin and λ-cyhalothrin and the structure of some functional groups of the probabilistic molecules

Piechowicz, Bartosz; Sadło, S; Woś, Izabela; Białek, J; Depciuch, Joanna; Podbielska, Magdalena; Szpyrka, Ewa; Kozioł, Katarzyna; Piechowicz, Iwona; Koziorowska, Anna

doi:10.1016/j.envres.2020.109989

Cited by 6 publications

(2 citation statements)

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“…Increased motor activity under the influence of natural EMF was also observed in locusts (Bergh 1979). Also, in our research we observed a significant stimulation of bees exposed to EMF in relation to the control group, manifests as, among others, a change in metabolic rate, including detoxification of active substances of plant protection products (Piechowicz et al 2020). The observed chemical changes in bees may therefore result from the intensification of metabolic changes related to environmental stress: increased metabolites in the body or accelerated transcription of genes (e.g., responsible for heat shock protein synthesis).…”

Section: Discussionsupporting

confidence: 79%

Polish Journal of Veterinary Sciences

Koziorowska

Depciuch

Białek

et al. 2020

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The electromagnetic field (EMF) is an environmental factor affecting living organisms. The aim of this study was to demonstrate the effect of an extremely low frequency electromagnetic field (ELF-EMF) on selected chemical components of the honeybee (Apis mellifera L.) using Fourier Transform Infrared (FTIR) spectroscopy. The FTIR method provides information on the chemical structure of compounds through identification and analysis of functional groups. The honeybees were treated with EMF at a frequency of 50 Hz and magnetic induction of 1.6 mT for 2, 6, 12, 24 and 48 hours. Analysis of FTIR spectra showed that EMF exposure longer than 2 hours induced changes in the structure of chemical compounds, especially in the IR region corresponding to DNA, RNA, phospholipids and protein vibrations, compared to control samples (bees not EMF treated). The results confirm the effect of EMF on bees depending on the duration of exposure.

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Section: Discussionsupporting

confidence: 79%

Polish Journal of Veterinary Sciences

Koziorowska

Depciuch

Białek

et al. 2020

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“…weakening of the sense of smell, memory loss and reduction of cognitive skills [7]. Attention is also drawn to the decreased number of worker bees returning to the nest due to the problems with location recognition and general disorientation caused by the presence of the EMF.…”

Section: Plos Onementioning

confidence: 99%

Exposure to a 900 MHz electromagnetic field induces a response of the honey bee organism on the level of enzyme activity and the expression of stress-related genes

et al. 2023

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There are many artificial sources of radiofrequency electromagnetic field (RF-EMF) in the environment, with a value between 100 MHz and 6 GHz. The most frequently used signal is with a frequency of around 900 MHz. The direction of these changes positively impacts the quality of life, enabling easy communication from almost anywhere in the world. All living organisms in the world feel the effects of the electromagnetic field on them. The observations regarding the influence of a RF-EMF on honey bees, describing the general impact of RF-EMF on the colony and/or behavior of individual bees, such as reduction in the number of individuals in colonies, extended homing flight duration, decrease in breeding efficiency, changes in flight direction (movement of bees toward the areas affected by RF-EMF), increase in the intensity and frequency of sounds characteristic for those announcing the impending danger. In this work, we describe the changes in the levels of some of the stress-related markers in honey bees exposed to varying intensities and duration of RF-EMF. One-day-old honeybee worker bees were used for the study. The bees were randomly assigned to 9 experimental groups which were exposed to the following 900 MHz EMF intensities: 12 V/m, 28 V/m, and 61 V/m for 15 min, 1 h and 3 h. The control group was not exposed to the RF-EMF. Each experimental group consisted of 10 cages in which were 100 bees. Then, hemolymph was collected from the bees, in which the activity was assessed AST, ALT, ALP, GGTP, and level of nonenzymatic antioxidants albumin, creatinine, uric acid, and urea. Bees were also collected for the analysis of rps5, ppo, hsp10, hsp70, hsp90, and vitellogenin gene expression. Our study shows that exposure to a 900 MHz electromagnetic field induces a response in the honey bees that can be detected in the level of enzyme activity and the expression of stress-related genes. The response is similar to the one previously described as a result of exposition to UVB irradiation and most likely cannot be attributed to increased temperature.

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