Study type: Medical/biological study (experimental study)

Effects of the magnetic field on different forms of embryonic locomotor activity of northern pike, Esox lucius L. med./bio.

Published in: AIeP 2004; 34 (2): 193-203

Aim of study (acc. to author)

To study the embryonic motorics of fish affected by constant and alternating magnetic fields.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: continuous for 30 min
Exposure 2:
Exposure duration: continuous for 30 min

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Waveform
Exposure duration continuous for 30 min
Exposure setup
Exposure source
Setup Eggs of pike were placed in 1 m x 1 m chambers which were placed between the coils.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 15 mT unspecified measured - -

Exposure 2

Main characteristics
Frequency
Type
Exposure duration continuous for 30 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 4 mT - measured - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • before exposure
  • during exposure
  • after exposure

Main outcome of study (acc. to author)

The following measurement parameters of the embryogenesis were affected:
1) Quasi-peristalsis (increased angular velocity and the amplitude of ectoplasmic waves at the stages of blastula end gastrula),
2) Heart muscle action (in alternating field only - short, small acceleration in the heartbeat is followed by a sudden rise of the number of contractions), and
3) Somatic motorics (no visible effect of neither constant- nor alternate field).

Study character:

Study funded by

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