Influence of Geomagnetic Disturbances at Different Times of Day on Locomotor Activity in Zebrafish (Danio Rerio)

2021 · Mixed · Low evidence

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MixedLow evidencePaper 964

Study snapshot

Publicationmanual · 2021

Study typeanimal

Reported directionMixed

Evidence ratingLow

Abstract

Influence of Geomagnetic Disturbances at Different Times of Day on Locomotor Activity in Zebrafish (Danio Rerio) Viacheslav V Krylov. Influence of Geomagnetic Disturbances at Different Times of Day on Locomotor Activity in Zebrafish (Danio Rerio). Clocks Sleep. 2021 Nov 29;3(4):624-632. doi: 10.3390/clockssleep3040045. Abstract The influence of magnetic fields and natural geomagnetic storms on biological circadian rhythms are actively studied. This study reveals an impact of local natural perturbations in the geomagnetic field that occurred at different times of the day on circadian patterns of locomotor activity of zebrafish. A decrease in zebrafish swimming speed was observed during the geomagnetic disturbances before or after the fluctuations of diurnal geomagnetic variation. However, if the geomagnetic perturbations coincided with the fluctuations of diurnal geomagnetic variation, the decrease in zebrafish swimming speed was insignificant. This result suggests that the biological effects of geomagnetic disturbances may depend on synchronization with the diurnal geomagnetic variation. It implies that the previously published correlations between geomagnetic activity and medical or biological parameters could result from a disruption in circadian biorhythms. Open access paper: ncbi.nlm.nih.gov

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

PopulationZebrafish (Danio rerio)

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Local natural perturbations in the geomagnetic field occurring at different times of day were associated with changes in zebrafish locomotor activity. Swimming speed decreased during geomagnetic disturbances occurring before or after fluctuations of diurnal geomagnetic variation, while decreases were reported as insignificant when perturbations coincided with diurnal geomagnetic variation fluctuations.

Outcomes measured

Circadian patterns of locomotor activity
Swimming speed

Limitations

Sample size not reported in abstract
Exposure metrics (field strength/magnitude, timing details) not quantified in abstract
Study design and control conditions not described in abstract

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": null,
    "source": "natural geomagnetic disturbances (geomagnetic storms/perturbations)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Zebrafish (Danio rerio)",
  "sample_size": null,
  "outcomes": [
    "Circadian patterns of locomotor activity",
    "Swimming speed"
  ],
  "main_findings": "Local natural perturbations in the geomagnetic field occurring at different times of day were associated with changes in zebrafish locomotor activity. Swimming speed decreased during geomagnetic disturbances occurring before or after fluctuations of diurnal geomagnetic variation, while decreases were reported as insignificant when perturbations coincided with diurnal geomagnetic variation fluctuations.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure metrics (field strength/magnitude, timing details) not quantified in abstract",
    "Study design and control conditions not described in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "geomagnetic disturbances",
    "geomagnetic storms",
    "magnetic fields",
    "circadian rhythms",
    "locomotor activity",
    "zebrafish",
    "diurnal geomagnetic variation"
  ],
  "suggested_hubs": [
    {
      "slug": "animal-studies",
      "weight": 0.9,
      "reason": "Study conducted in zebrafish assessing behavioral/circadian outcomes under natural geomagnetic perturbations."
    }
  ]
}

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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: 10.3390/clockssleep3040045
PubMed: Not supplied

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