Effects of electromagnetic fields on parthenogenic eggs of Daphnia magna Straus.

Ecotoxicology and environmental safety · 2010 · Mixed · Low evidence

← Research stream

MixedLow evidencePaper 4420

Parthenogenetic eggs of Daphnia magna exposed to low-frequency EMF (75 microT; 45, 110, 175, 435, 500 Hz) showed accelerated embryonic development. Females developing from exposed eggs showed deteriorated production characteristics in their first brood.

Study snapshot

PublicationEcotoxicology and environmental safety · 2010

Study typeanimal

Reported directionMixed

Evidence ratingLow

Abstract

Developing parthenogenetic eggs of Daphnia magna were used as a test-system to evaluate the effect of a number of low-frequency electromagnetic fields (EMF) of 75microT density. Two blocks of EMF acting frequencies were found in the studied series-45, 110, and 175Hz, and 435 and 500Hz. Developing parthenogenetic eggs of D. magna exposed to EMF with indicated parameters have shown accelerated rates of embryonic development. Females that developed from exposed eggs have shown deteriorated production characteristics in their first brood. Used test-system may be successfully utilized to detect weak effects directly during embryogenesis. However, results obtained only during daphnids' early developmental stages are incomplete without observations on their further development.

Machine Enhanced Logic

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 directionmixed

PopulationDeveloping parthenogenetic eggs of Daphnia magna (and resulting females)

Sample sizeNot supplied

ExposureELF

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Embryonic development rate
Production characteristics in first brood (reproductive output)

Limitations

Exposure duration not reported in abstract
Sample size not reported in abstract
Only early developmental stages assessed; authors note observations of further development are needed

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Developing parthenogenetic eggs of Daphnia magna (and resulting females)",
  "sample_size": null,
  "outcomes": [
    "Embryonic development rate",
    "Production characteristics in first brood (reproductive output)"
  ],
  "main_findings": "Parthenogenetic eggs of Daphnia magna exposed to low-frequency EMF (75 microT; 45, 110, 175, 435, 500 Hz) showed accelerated embryonic development. Females developing from exposed eggs showed deteriorated production characteristics in their first brood.",
  "effect_direction": "mixed",
  "limitations": [
    "Exposure duration not reported in abstract",
    "Sample size not reported in abstract",
    "Only early developmental stages assessed; authors note observations of further development are needed"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "Daphnia magna",
    "parthenogenesis",
    "eggs",
    "embryogenesis",
    "low-frequency electromagnetic fields",
    "ELF",
    "75 microT",
    "45 Hz",
    "110 Hz",
    "175 Hz",
    "435 Hz",
    "500 Hz",
    "development",
    "reproduction"
  ],
  "suggested_hubs": []
}

AI can be wrong. Always verify against the paper.

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: 10.1016/j.ecoenv.2009.03.005
PubMed: 19362370

Read the original paper →

Related papers

← Back to the Research Library