Study type: Medical/biological study (experimental study)

Electromagnetic field of extremely low frequency has an impact on selected chemical components of the honeybee med./bio.

Published in: Pol J Vet Sci 2020; 23 (4): 537-544

Aim of study (acc. to author)

The effects of exposure of honeybees to a 50 Hz magnetic field for different durations on biochemical changes should be investigated.

Background/further details

Bees were divided into the following groups (n=40, respectively): exposure to the magnetic field for 1) 2 hours, 2) 6 hours, 3) 12 hours, 4) 24 hours and 5) 48 hours. For each exposure group, a separate control group was used. After exposure bees were frozen for further analysis.



Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: 2-48 hours

Exposure 1

Main characteristics
Frequency 50 Hz
Exposure duration 2-48 hours
Exposure setup
Exposure source
  • Magneris EMF generator
Chamber bees were placed in Petri dishes (10 cm in diameter and 10 bees per dish)
Setup Magneris EMF generator with flat applicators placed directly above the dishes
Measurand Value Type Method Mass Remarks
magnetic flux density 1.6 mT - measured - -

Reference articles

  • Koziorowska A et al. (2018): Extremely low frequency variable electromagnetic fields affect cancer and noncancerous cells in vitro differently: Preliminary study
  • Koziorowska A et al. (2017): Electromagnetic fields with frequencies of 5, 60 and 120 Hz affect the cell cycle and viability of human fibroblast BJ in vitro

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Exposure to the magnetic field for 2 hours or more (all exposure groups) induced changes in the structure of chemical compounds, especially in the infrared region corresponding to DNA, RNA, phospholipids and protein vibrations, compared to the control group.
The authors concluded that exposure to a 50 Hz magnetic field could induce biochemical changes in honeybees.

Study character:

Study funded by

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