Study type: Medical/biological study (experimental study)

Temporal pattern of Drosophila subobscura locomotor activity after exposure to extremely low frequency magnetic field (50 Hz, 0.5 mT). med./bio.

Published in: Drosoph Inf Serv 2013; 96: 84-90
Journal not peer-reviewed

Aim of study (acc. to author)

The effects of exposure of Drosophila subobscura to a 50 Hz magnetic field at different developmental stages on motor activity should be investigated.

Background/further details

Male and female Drosophila subobscura were exposed either as larvae (group 1, egg-first larval stage, n=45/sex) or as just eclosed adults (group 2, n=75/sex). In addition, a cage control group and a sham exposure group were used for each exposure group. Since no differences were observed between these, they were pooled for analysis in one control group (eggs: n=45/sex, adults: n=75/sex).

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: continuous for 48 h

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Exposure duration continuous for 48 h
Exposure setup
Exposure source
Setup exposure system consisted of 3 circular coils (37 cm diameter and set at 23 cm distance from each other) made of insulated copper wire (0.75 mm in diameter); no temperature fluctuation or vibrations were observed
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 0.5 mT - measured - ± 0.01 mT

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Both parameters of motor activity, distance travelled and mobility time, were significantly reduced in exposed male and female Drosophila subobscura larvae (group 1) and just eclosed adults (group 2) compared to the respective control groups.
The authors conclude that exposure of Drosophila subobscura to a 50 Hz-magnetic field at different developmental stages might affect motor activity.

Study character:

Study funded by

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