Disruption of magnetic orientation in hatchling loggerhead sea turtles by pulsed magnetic fields

2005 ◽  
Vol 191 (5) ◽  
pp. 475-480 ◽  
Author(s):  
William P. Irwin ◽  
Kenneth J. Lohmann
Keyword(s):  
Magnetic Fields ◽  
Sea Turtles ◽  
Magnetic Orientation ◽  
Pulsed Magnetic Fields ◽  
Loggerhead Sea Turtles

scholarly journals Orientation of hatchling loggerhead sea turtles to regional magnetic fields along a transoceanic migratory pathway

2011 ◽  
Vol 214 (15) ◽  
pp. 2504-2508 ◽  
Author(s):  
M. J. Fuxjager ◽  
B. S. Eastwood ◽  
K. J. Lohmann
Keyword(s):  
Magnetic Fields ◽  
Sea Turtles ◽  
Loggerhead Sea Turtles ◽  
Migratory Pathway

scholarly journals ACQUISITION OF MAGNETIC DIRECTIONAL PREFERENCE IN HATCHLING LOGGERHEAD SEA TURTLES

1994 ◽  
Vol 190 (1) ◽  
pp. 1-8 ◽  
Author(s):  
K Lohmann ◽  
C Lohmann
Keyword(s):  
Magnetic Field ◽  
Visual Cues ◽  
Laboratory Experiments ◽  
Sea Turtles ◽  
Magnetic Orientation ◽  
Loggerhead Sea Turtles ◽  
Preferred Direction ◽  
Open Sea ◽  
Directional Preference ◽  
The Magnetic Field

During their natal migration, hatchling loggerhead sea turtles (Caretta caretta L.) establish courses towards the open ocean and maintain them after swimming beyond sight of land. Laboratory experiments have demonstrated that swimming hatchlings can orient using the earth's magnetic field. For the magnetic compass to function in guiding the offshore migration, however, hatchlings must inherit or acquire a magnetic directional preference that reliably leads them towards the open sea. On land, hatchlings find the ocean using light cues associated with the seaward horizon. To determine whether turtles might acquire a preference for a specific magnetic direction on the basis of such cues, we studied the magnetic orientation of turtles initially exposed to light from either magnetic east or west. Hatchlings that had been exposed to light in the east subsequently oriented eastward when tested in darkness, whereas those that had been exposed to light in the west swam westward. Reversing the magnetic field resulted in a corresponding shift in orientation, indicating that the turtles were orienting to the ambient magnetic field. These results demonstrate that light cues can set the preferred direction of magnetic orientation by loggerhead hatchlings. We therefore hypothesize that hatchlings initially establish a seaward course using visual cues available on or near land, then maintain the course using magnetic cues as they migrate into the open sea.

Estimating the distribution and relative density of satellite-tagged loggerhead sea turtles using geostatistical mixed effects models

2018 ◽  
Vol 586 ◽  
pp. 217-232 ◽  
Author(s):  
MV Winton ◽  
G Fay ◽  
HL Haas ◽  
M Arendt ◽  
S Barco ◽  
...  
Keyword(s):  
Relative Density ◽  
Sea Turtles ◽  
Mixed Effects ◽  
Mixed Effects Models ◽  
Loggerhead Sea Turtles

Early Development of Sea Urchin P.lividus Under Static (6 mT) and Pulsed Magnetic Fields (15 and 72 Hz)

2016 ◽  
Vol 10 (1) ◽  
pp. 32-42 ◽  
Author(s):  
Bernadetta A. Tenuzzo ◽  
Cristian Vergallo ◽  
Luciana Dini
Keyword(s):  
Magnetic Fields ◽  
Early Development ◽  
Sea Urchin ◽  
Pulsed Magnetic Fields

scholarly journals High-resolution calorimetry in pulsed magnetic fields

2021 ◽  
Vol 92 (4) ◽  
pp. 043901
Author(s):  
Shusaku Imajo ◽  
Chao Dong ◽  
Akira Matsuo ◽  
Koichi Kindo ◽  
Yoshimitsu Kohama
Keyword(s):  
High Resolution ◽  
Magnetic Fields ◽  
Pulsed Magnetic Fields

Pulsed Magnetic Fields: Clarendon exceeds 50 T

1987 ◽  
Vol 38 (5) ◽  
pp. 171-172
Author(s):  
H Jones
Keyword(s):  
Magnetic Fields ◽  
Pulsed Magnetic Fields
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