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Using Pharmacological Manipulation and High-precision Radio Telemetry to Study the Spatial Cognition in Free-ranging Animals
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Magnetic maps in animal navigation.

Kenneth J Lohmann1, Kayla M Goforth2, Alayna G Mackiewicz2

  • 1Department of Biology, University of North Carolina, Chapel Hill, NC, 27599, USA. KLohmann@email.unc.edu.

Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
|January 9, 2022
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Summary
This summary is machine-generated.

Animals use Earth's magnetic field for navigation, acting as a

Keywords:
MagnetoreceptionMigrationNatal homingNavigationPhilopatry

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Area of Science:

  • * Animal behavior and navigation science.
  • * Geophysics and geomagnetism.
  • * Ecology and evolutionary biology.

Background:

  • * Earth's magnetic field provides directional (compass) and positional (map) information for animals.
  • * The concept of magnetic navigation has evolved from a hypothesis to a recognized phenomenon in animal behavior.
  • * Diverse species, including invertebrates and vertebrates, utilize magnetic cues for orientation and homing.

Purpose of the Study:

  • * To review the established understanding of magnetic navigation in animals.
  • * To highlight the diverse applications of magnetic information in animal movement and orientation.
  • * To identify knowledge gaps in the study of magnetic map formation and utilization.

Main Methods:

  • * Literature review of recent findings in animal magnetoreception and navigation.
  • * Synthesis of evidence from various animal groups (e.g., crustaceans, fish, birds, sea turtles).
  • * Analysis of studies on imprinting and natal homing using magnetic cues.

Main Results:

  • * Magnetic positional information is crucial for migration, foraging, and goal-directed movement in many species.
  • * Evidence suggests that animals imprint on their natal magnetic field for long-distance homing (natal philopatry).
  • * Established use cases span from maintaining migratory routes to locating specific destinations.

Conclusions:

  • * Magnetic navigation is a well-established tenet in animal behavior, with broad implications across taxa.
  • * Imprinting on magnetic fields is a key mechanism for natal homing in migratory species.
  • * Further research is needed to understand the development and neural basis of magnetic maps in animals.