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Volume 4, Pages 41-47
Research Article

Influence of 50-Hz Electromagnetic Field on Anurian (Xenopus laevis) Metamorphosis

1Institute Neurobiology and Molecular Medicine, CNR, via del Fosso del Cavaliere, Rome, Italy
2ISPESL, via Urbana 167 00184. Rome, Italy

Received 21 July 2004; Revised 6 September 2004; Accepted 6 September 2004

Copyright © 2004 S. Grimaldi et al.


In this study, we show the effect of a 1-mT magnetic field AC at 50 Hz on Xenopus laevis tadpole populations. In the course of a 65-day exposure to the field, tadpole survival showed a small, but significant, decrease (p < 0.0004), together with a striking parallel 6-day shift in tadpole maturation frequency and a significant impairment of their metamorphosis. Particularly, metamorphosis was successful for 85% of individuals in the unirradiated tadpole population and for 45% of individuals in the irradiated tadpole population, respectively.