Disruption of the sea turtle magnetic map sense by a magnetic pulse.
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| Název: | Disruption of the sea turtle magnetic map sense by a magnetic pulse. |
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| Autoři: | Mackiewicz AG; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA., Glazener AM; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA., Goforth KM; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA., Lim DS; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA., Lohmann CMF; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA., Lohmann KJ; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA. |
| Zdroj: | The Journal of experimental biology [J Exp Biol] 2025 Nov 15; Vol. 228 (22). Date of Electronic Publication: 2025 Nov 20. |
| Způsob vydávání: | Journal Article |
| Jazyk: | English |
| Informace o časopise: | Publisher: Company Of Biologists Limited Country of Publication: England NLM ID: 0243705 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1477-9145 (Electronic) Linking ISSN: 00220949 NLM ISO Abbreviation: J Exp Biol Subsets: MEDLINE |
| Imprint Name(s): | Publication: London : Company Of Biologists Limited Original Publication: London, Cambridge Univ. Press. |
| Výrazy ze slovníku MeSH: | Turtles*/physiology , Magnetic Fields*, Animals ; Animal Migration ; Orientation ; Orientation, Spatial |
| Abstrakt: | Although some migratory animals can derive directional (compass) and positional (map) information from Earth's magnetic field, the underlying mechanisms of magnetic sensing have remained enigmatic. One hypothesis proposes that crystals of the mineral magnetite (Fe3O4) function in magnetoreception, a concept bolstered by findings that brief, strong magnetic pulses capable of reversing the magnetic dipole moment of magnetite affect magnetic orientation responses of several animals. Disentangling whether such pulses affected an animal's magnetic compass sense or magnetic map sense, however, has often been difficult. Here, we investigated the effect of a magnetic pulse on the magnetic map sense of loggerhead sea turtles (Caretta caretta) using an established conditioning assay that requires turtles to use magnetic map information but not their magnetic compass. We report that a magnetic pulse disrupted turtle responses, consistent with the interpretation that the magnetic map sense of turtles is based at least partly on magnetite-based magnetoreceptors. (© 2025. Published by The Company of Biologists.) |
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| Grant Information: | FA9550-20-1-0399 Air Force Office of Scientific Research; University of North Carolina at Chapel Hill |
| Contributed Indexing: | Keywords: Magnetic pulse; Magnetite; Magnetoreception; Map sense; Navigation; Turtles |
| Entry Date(s): | Date Created: 20251120 Date Completed: 20251120 Latest Revision: 20251204 |
| Update Code: | 20251204 |
| PubMed Central ID: | PMC12669835 |
| DOI: | 10.1242/jeb.251243 |
| PMID: | 41265039 |
| Databáze: | MEDLINE |
Nájsť tento článok vo Web of Science | Abstrakt: | Although some migratory animals can derive directional (compass) and positional (map) information from Earth's magnetic field, the underlying mechanisms of magnetic sensing have remained enigmatic. One hypothesis proposes that crystals of the mineral magnetite (Fe3O4) function in magnetoreception, a concept bolstered by findings that brief, strong magnetic pulses capable of reversing the magnetic dipole moment of magnetite affect magnetic orientation responses of several animals. Disentangling whether such pulses affected an animal's magnetic compass sense or magnetic map sense, however, has often been difficult. Here, we investigated the effect of a magnetic pulse on the magnetic map sense of loggerhead sea turtles (Caretta caretta) using an established conditioning assay that requires turtles to use magnetic map information but not their magnetic compass. We report that a magnetic pulse disrupted turtle responses, consistent with the interpretation that the magnetic map sense of turtles is based at least partly on magnetite-based magnetoreceptors.<br /> (© 2025. Published by The Company of Biologists.) |
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| ISSN: | 1477-9145 |
| DOI: | 10.1242/jeb.251243 |