Abstract
The influence of magnetic fields on hatching and chromatin state of brine shrimp, Artemia sp., was investigated. Dry Artemia cysts were exposed to a magnetic field of intensity 25 mT for 10 min. The magnetic field was applied in different variants: constant field, rotating field of different directions (right-handed and left-handed) and different magnet polarization. The effect of ultra wideband pulse radiation and microwave radiation was also investigated. The energy density on the surface of object exposed to ultra wideband pulse radiation was 10−2, 10−3, 10−4, 10−5 and 10−6 W/cm2, the power of microwave radiation was 10−4 and 10−5 W/cm2, exposure time - 10 s. After incubation of the cysts for 48 hours in sea water the hatching percentage of Artemia from exposed cysts was higher than in controls. The number of heterochromatin granules was significantly higher in the nauplia (newborn larvae of Artemia) developed from cysts that had been exposed to magnetic and electromagnetic fields. The data obtained demonstrate an increase in percentage hatching of Artemia cysts after treatment with magnetic and electromagnetic fields and chromatin condensation in nauplia. We have also shown different effects of right-handed and left-handed rotating magnetic fields on these processes.
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Shckorbatov, Y., Rudneva, I., Pasiuga, V. et al. Electromagnetic field effects on Artemia hatching and chromatin state. cent.eur.j.biol. 5, 785–790 (2010). https://doi.org/10.2478/s11535-010-0063-8
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DOI: https://doi.org/10.2478/s11535-010-0063-8