Effects of non-ionizing radio frequency electromagnetic radiation on the development and behavior of early embryos of Danio rerio (zebrafish)

Abstract

Overview

This study explores the biological effects of radiofrequency electromagnetic radiation (RF-EMR) emitted by mobile phones on zebrafish embryos. The radiation studied was within the frequency range of 900-1800 MHz.

Methodology and Exposure

• The embryos were exposed to RF-EMR, with a specific absorption rate of 1.13 W/kg at 1800 MHz frequency, for 1 hour daily over a span of 5 days starting at 1 hour post fertilization (hpf).
• Different stages of exposure were tested: 1hpf, 6hpf, and 24hpf.

Findings

While there were no significant changes in the survival rate, morphology, oxidative stress, or cortisol levels:

• A noticeable difference was observed in the locomotion patterns of embryos exposed right from 1hpf.
• The study detailed specific differences in distance travelled and anxiety-like behavior correlating with increased yolk consumption.

Conclusion

The research concluded that the effects of RF-EMR on zebrafish embryos are most significant during the earliest stages of development. It also suggested further studies could reveal more significant effects correlating with longer exposure durations typical of current mobile phone usage.