Study type: Medical/biological study (experimental study)

Effects of Extremely Low Frequency (50 Hz) Magnetic Field on Development Dynamics of the Housefly (Musca domestica L.) med./bio.

Published in: Electromagn Biol Med 2005; 24 (2): 99-107

Aim of study (acc. to author)

To study whether magnetic field affects metamorphosis of the housefly Musca domestica and its adult lifespan and to observe any temperature effect detectable at two chosen temperatures (19 and 24°C).

Background/further details

Groups of 50 individuals each were investigated.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: average of 12.72 and 7.02 days at 19°C and 24°C, respectively, in metamorphosis experiments; average of 3.54 and 2.45 days at 19°C and 24°C, respecticvely, in adult life span experiments

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Waveform
Exposure duration average of 12.72 and 7.02 days at 19°C and 24°C, respectively, in metamorphosis experiments; average of 3.54 and 2.45 days at 19°C and 24°C, respecticvely, in adult life span experiments
Exposure setup
Exposure source
Setup 100 pupae were placed in glass tubes without nutrient substrate and were equally divided into exposure and control group. The exposure group was placed in a relative homogeneous MF between the poles of dimensions 9.3 cm x 4.8 cm with a gap of 7.2 cm. Control group was placed away from the coils where no magnetic field was detected. Experiments were performed at 24°C and 19°C.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 6 mT mean measured - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • during exposure

Main outcome of study (acc. to author)

The magnetic field significantly slowed down metamorphosis at both temperatures (4.09% at 19°C, 15.81% at 24°C). The adult lifespan in the magnetic field at 24°C was statistically significantly extended (by 20%) with respect to control, whereas the lifespan in the magnetic field at 19°C showed no statistically significant alteration in comparison to control.

Study character:

Study funded by

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