Oviposition and development of Drosophila modified by magnetic fields

Abstract

Drosophila flies placed in a habitat with two lateral boxes demonstrated sensitivity to magnetic fields: Oviposition decreased by exposure to pulsated (extremely low frequency (ELF) (100 Hz, 1.76 miliTesla (mT) ) and sinusosidal fields (50 Hz, 1 mT), while there was no initial effect of exposure to a static magnetic field (4.5 mT). Drosophila eggs treated for 48 h with the above described fields showed that 1) mortality of eggs was lower in controls than in eggs exposed to all tested magnetic fields; 2) mortality of larvae increased when a permanent magnet was used; 3) mortality of pupae was highest when a permanent magnet was used; and 4) general adult viability was highest in controls (67%) and diminished progressively when eggs were exposed to pulsated (55%), sinusoidal (45%), and static (35%) magnetic fields.

Effects of extremely low‐frequency magnetic fields on the oviposition of Drosophila melanogaster over three generations

“…In experimental colonies, development was not achieved by 9%, 11%, and 19% of the eggs in generations F1, F2, and F3, respectively (Table 1). Similarly, Ramirez et al [1983] confirmed a higher mortality of eggs, larvae, and pupae of D. melanogaster flies placed for 48 h under both pulsed (100 Hz, 1.76 mT) and sinusoidal (50 Hz, 1 mT) electromagnetic fields.…”

Mechanism for action of electromagnetic fields on cells

“…(10) Effect of pulsed and alternating magnetic fields, 1.5-72 Hz, 3.8-35 G, on RNA and protein synthesis in Sciara coprophila salivary gland cells [51][52][53]. (11) Effect of 100 Hz, 17 G pulsed magnetic field on oviposition and development of Drosophila [54]. (12) Mutagenic action of 16 Hz, 35 G pulsed magnetic field on Drosophila sperm [55].…”

Advances in Electromagnetic Therapy for Wound Healing

“…Ramirez 46 , et al subjected fruit fly to relatively high field intensity (10 G -45 G) at two different frequencies (50 Hz and 100 Hz) of mixed pulsated and sinusoidal fields without considering the alignment of the AC and the DC fields in the experimental design and claimed that the egg mortality rate of the exposed group was significantly higher than the control groups 46 .…”