RF Safe

A sense of place: Pink salmon use a magnetic map for orientation

2020 · Unclear · Insufficient evidence

← Research stream
UnclearInsufficient evidencePaper 1591

In a magnetic displacement experiment, juvenile pink salmon used magnetic cues to orient. The headings of these navigationally naïve fish aligned with migration directions inferred from historical tagging and catch data, suggesting large-scale movements may b…

Study snapshot

Publicationmanual · 2020
Study typeanimal
Reported directionUnclear
Evidence ratingInsufficient

Abstract

A sense of place: Pink salmon use a magnetic map for orientation Putman NF, Williams CR, Gallagher EP, Dittman AH. A sense of place: Pink salmon use a magnetic map for orientation. J Exp Biol. 2020 Feb 6. pii: jeb.218735. doi: 10.1242/jeb.218735. Abstract The use of "map-like" information from Earth's magnetic field for orientation has been shown in diverse taxa, but questions remain regarding the function of such maps. We used a "magnetic displacement" experiment to demonstrate that juvenile pink salmon (Oncorhynchus gorbuscha) use magnetic cues to orient. The experiment was designed to simultaneously explore whether their magnetic map is used to direct fish (i) homeward, (ii) toward the center of their broad oceanic range, or (iii) along their oceanic migratory route. The headings adopted by these navigationally naïve fish coincided remarkably well with the direction of the juveniles' migration inferred from historical tagging and catch data. This suggests that the large-scale movements of pink salmon across the North Pacific may be driven largely by their innate use of geomagnetic map cues. Key aspects of the oceanic ecology of pink salmon and other marine migrants might therefore be predicted from magnetic displacement experiments. 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 directionunclear
PopulationJuvenile pink salmon (Oncorhynchus gorbuscha)
Sample sizeNot supplied
ExposureNot supplied
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

In a magnetic displacement experiment, juvenile pink salmon used magnetic cues to orient. The headings of these navigationally naïve fish aligned with migration directions inferred from historical tagging and catch data, suggesting large-scale movements may be driven largely by innate use of geomagnetic map cues.

Outcomes measured

  • Orientation/headings in response to magnetic displacement
  • Use of geomagnetic map cues for navigation/migration direction

Limitations

  • Sample size not reported in provided abstract/metadata
  • Details of magnetic field manipulation parameters and exposure characteristics not provided in provided abstract/metadata
  • Outcome measures and statistical results not provided in provided abstract/metadata
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": null,
    "source": "Earth's magnetic field (geomagnetic cues)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Juvenile pink salmon (Oncorhynchus gorbuscha)",
  "sample_size": null,
  "outcomes": [
    "Orientation/headings in response to magnetic displacement",
    "Use of geomagnetic map cues for navigation/migration direction"
  ],
  "main_findings": "In a magnetic displacement experiment, juvenile pink salmon used magnetic cues to orient. The headings of these navigationally naïve fish aligned with migration directions inferred from historical tagging and catch data, suggesting large-scale movements may be driven largely by innate use of geomagnetic map cues.",
  "effect_direction": "unclear",
  "limitations": [
    "Sample size not reported in provided abstract/metadata",
    "Details of magnetic field manipulation parameters and exposure characteristics not provided in provided abstract/metadata",
    "Outcome measures and statistical results not provided in provided abstract/metadata"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "geomagnetic map",
    "magnetic displacement",
    "orientation",
    "navigation",
    "pink salmon",
    "Oncorhynchus gorbuscha",
    "migration",
    "Earth's magnetic field"
  ],
  "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: 10.1242/jeb.218735
PubMed: Not supplied

Read the original paper →

Related papers

← Back to the Research Library