The effects of a near field exposure of Drosophila melanogaster to 900 and 1880 MHz electromagnetic fields on the oviposition should be investigated.
Flies were kept and exposed in glass vials. Male and female animals were separately exposed during the first two days and from day 3 on, they were exposed in groups of 8 male and 8 female individuals per vial. For each exposure source, 5 vials were exposed and 5 vials were used as control. A mobile phone and a cordless phone were used as exposure sources.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
864.1–868.1 MHz
Modulation type:
pulsed
Exposure duration:
continuous for 20 min/day for 5 days
|
|
|
Exposure 2:
1,880 MHz
Exposure duration:
continuous for 20 min/day for 5 days
|
| Frequency | 864.1–868.1 MHz |
|---|---|
| Type | |
| Charakteristic | |
| Exposure duration | continuous for 20 min/day for 5 days |
| Additional info | mobile phone |
| Modulation type | pulsed |
|---|---|
| Repetition frequency | 217 Hz |
| Frequency | 1,880 MHz |
|---|---|
| Type | |
| Charakteristic | |
| Exposure duration | continuous for 20 min/day for 5 days |
| Additional info | cordless phone |
| Exposure source |
|
|---|
No significant differences could be observed in the quantity of oviposition between the 1880 MHz group and the control group. However, a significant decrease in the number of eggs was observed in the 900 MHz GSM group compared to the control group and to the 1880 MHz group.
The authors conclude that a near field exposure to a 900 MHz GSM field from a mobile phone means a more intense stress factor for Drosophila melanogaster with effects on reproduction than an exposure to a 1880 MHz field from a cordless phone.
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