The effects of microwave frequency electromagnetic fields on the development of Drosophila melanogaster.

International journal of radiation biology · 2006 · Harm · Low evidence

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HarmLow evidencePaper 5116

No differences were observed in transition percentages from larvae to pupae or pupae to adults (p>0.05). Mean pupation time was delayed linearly with increasing exposure duration (p<0.05). In the discontinuous 3 h + 3 h exposure group, mean offspring number w…

Study snapshot

PublicationInternational journal of radiation biology · 2006

Study typeanimal

Reported directionHarm

Evidence ratingLow

Abstract

PURPOSE: To investigate the effects of microwave frequency electromagnetic fields (EMF) on the development of Drosophila melanogaster. MATERIALS AND METHODS: Larvae of D. melanogaster were exposed to 10 GHz EMF continuously (3 h, 4 h and 5 h) and discontinuously (3 h exposure + 30 min interval + 3 h exposure). The percentages and times of transition from larvae to pupae and from pupae to adults were determined, and the mean offspring number was examined using the offspring of the females which had been exposed as larvae. RESULTS: No differences were found in the transition percentages from larvae to pupae and from pupae to adults (p > 0.05). However, it was found that the mean pupation time was delayed linearly with an increasing electromagnetic field (EMF) exposure period (p < 0.05). In the 3 + 3-h exposed group (E3 + 3), the mean offspring number was significantly less than that of the control (p < 0.05). CONCLUSIONS: 10 GHz EMF can cause developmental delay and decrease the number of offspring in D. melanogaster.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal

Effect directionharm

PopulationDrosophila melanogaster larvae (offspring outcomes assessed in adults exposed as larvae)

Sample sizeNot supplied

Exposuremicrowave · 10000 MHz · Continuous exposure for 3 h, 4 h, or 5 h; discontinuous exposure 3 h + 30 min interval + 3 h

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Outcomes measured

Transition percentages from larvae to pupae
Transition percentages from pupae to adults
Mean pupation time
Mean offspring number

Limitations

Sample size not reported in abstract
Exposure intensity/field strength and dosimetry (e.g., SAR) not reported in abstract
Only one frequency tested (10 GHz)
Offspring reduction reported for one exposure regimen (3 h + 3 h)

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": 10000,
    "sar_wkg": null,
    "duration": "Continuous exposure for 3 h, 4 h, or 5 h; discontinuous exposure 3 h + 30 min interval + 3 h"
  },
  "population": "Drosophila melanogaster larvae (offspring outcomes assessed in adults exposed as larvae)",
  "sample_size": null,
  "outcomes": [
    "Transition percentages from larvae to pupae",
    "Transition percentages from pupae to adults",
    "Mean pupation time",
    "Mean offspring number"
  ],
  "main_findings": "No differences were observed in transition percentages from larvae to pupae or pupae to adults (p>0.05). Mean pupation time was delayed linearly with increasing exposure duration (p<0.05). In the discontinuous 3 h + 3 h exposure group, mean offspring number was significantly lower than control (p<0.05).",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure intensity/field strength and dosimetry (e.g., SAR) not reported in abstract",
    "Only one frequency tested (10 GHz)",
    "Offspring reduction reported for one exposure regimen (3 h + 3 h)"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave",
    "10 GHz",
    "electromagnetic fields",
    "Drosophila melanogaster",
    "development",
    "pupation time",
    "offspring number",
    "reproduction"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1080/09553000600798849
PubMed: 16846978

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