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Magnetoreception

  • Roswitha WiltschkoEmail author
  • Wolfgang Wiltschko
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 739)

Abstract

Animals can use the direction of the magnetic field as a compass and the intensity of the magnetic field as a component of the navigational ‘map’. Two fundamentally different mechanisms of magnetoreception have been discussed: (1) light-dependent reactions in specialized photopigments lead to radical pairs, with the ratio singlet/ triplet depending on the molecule’s alignment with respect to the ambient magnetic field and (2) reactions involving small crystals of magnetite, a specific iron oxide of biogen origin. The first mechanism provides birds and possibly amphibians and insects with compass information; the second, which can theoretically provide animals with information on direction and intensity, appears to mediate intensity information in birds and compass information e.g., in mammals. Little is known about the magnetoreception mechanisms in other animals.

Keywords

Magnetite Particle Magnetic Compass Marine Turtle Loggerhead Turtle Homing Pigeon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Landes Bioscience and Springer Science+Business Media 2012

Authors and Affiliations

  1. 1.Fachbereich BiowissenschaftenJ.W. Goethe-UniversitaetFrankfurt am MainGermany

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