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

PAPER pubmed International journal of radiation biology 2006 Animal study Effect: harm Evidence: Low

Read original paper → DOI: 10.1080/09553000600798849 PMID: 16846978 Evidence Lab

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.

AI evidence extraction

At a glance

Study type

Animal study

Effect direction

harm

Population

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

Sample size

—

Exposure

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

Evidence strength

Low

Confidence: 78% · Peer-reviewed: yes

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).

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": 0.7800000000000000266453525910037569701671600341796875,
    "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/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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