Study type: Medical/biological study (experimental study)

A preliminary report on effect of pulsed magnetic fields on fresh water fish (Labeo rohita) chromosomes. med./bio.

Published in: J Environ Biol 2004; 25 (3): 329-332

Aim of study (acc. to author)

To study the effect of pulsed magnetic field on karyology in the fish Labeo rohita, as karyological information of fish is becoming increasingly important in the field of cytotaxonomy (the study of natural relationships of organisms by a combination of cytology and taxonomy), gene mapping and mutagenesis. Moreover, karyotyping data can assess the efficacy of chromosomal engeneering in producing haploid, polyploid and parthenogenetic organisms.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Modulation type: pulsed
Exposure duration: repeated daily exposure, 6 h/day for 30 days

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Waveform
Exposure duration repeated daily exposure, 6 h/day for 30 days
Modulation
Modulation type pulsed
Exposure setup
Exposure source
  • coil(s)
  • Fansleau-Braunbeck type 4 coil system
Chamber aquarium fitted with aerato and maintained at 28-30°C
Setup 10 fishes kept in the aquarium which was placed in the 4 coil system
Sham exposure A sham exposure was conducted.
Additional info coil system consisted of two larger coils and two smaller coils which were mounted co-planar and co-axially creating a disk shaped volume; diameters of the coils and the distances between them were chosen so that they presented a uniform axial magnetic field
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 20 µT unspecified unspecified - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The karyological investigations revealed no distinct difference between exposed and control groups.

Study character:

Study funded by