Study type: Medical/biological study (experimental study)

Retardation of embryogenesis by extremely low frequency 60 Hz electromagnetic fields. med./bio.

Published in: Physiol Chem Phys Med NMR 1985; 17 (1): 135-138

Aim of study (acc. to author)

To examine whether in ovo exposure to electric and/or magnetic fields have biological effects on the development of fish embryos.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 60 Hz
Exposure duration: continuous for 48 h
Exposure 2: 60 Hz
Exposure duration: continuous for 48 h
Exposure 3: 60 Hz
Exposure duration: continuous for 48 h

General information

Exposure setup described in reference article: J.H.Lucas and M.J.Johnson, IEEE, San Antonio, Texas, April 24-26, (1984), pp. 157-160

Exposure 1

Main characteristics
Frequency 60 Hz
Type
Exposure duration continuous for 48 h
Additional info electric field
Exposure setup
Exposure source
  • not specified
Chamber four chambers containing the eggs (final volume of 50 ml) were concurrently exposed to the individual and combined fields including a control
Parameters
Measurand Value Type Method Mass Remarks
current density 300 mA/m² effective value - - -

Exposure 2

Main characteristics
Frequency 60 Hz
Type
Exposure duration continuous for 48 h
Additional info magnetic field
Exposure setup
Exposure source
  • not specified
Chamber four chambers containing the eggs (final volume of 50 ml) were concurrently exposed to the individual and combined fields including a control
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 100 µT effective value - - -

Exposure 3

Main characteristics
Frequency 60 Hz
Type
Exposure duration continuous for 48 h
Additional info electric and magnetic field
Exposure setup
Exposure source
  • not specified
Chamber four chambers containing the eggs (final volume of 50 ml) were concurrently exposed to the individual and combined fields including a control
Parameters
Measurand Value Type Method Mass Remarks
current density 300 mA/m² effective value - - -
magnetic flux density 100 µT effective value - - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Embryos which were exposed to a magnetic field or a combined magnetic and electric field (but not to an electric field alone) were delayed in their development compared to unexposed embryos, but developmental abnormalities were not found (remark EMF-Portal: detailed data not shown).
The authors conclude that magnetic fields could cause developmental retardation of vertebrates embryos.

Study character:

Study funded by

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