A little movement orientated to the geomagnetic field makes a big difference in strong flows

Scott, Rebecca, Marsh, Robert and Hays, Graeme C. 2012, A little movement orientated to the geomagnetic field makes a big difference in strong flows, Marine biology, vol. 159, no. 3, pp. 481-488, doi: 10.1007/s00227-011-1825-1.

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Title A little movement orientated to the geomagnetic field makes a big difference in strong flows
Author(s) Scott, Rebecca
Marsh, Robert
Hays, Graeme C.ORCID iD for Hays, Graeme C. orcid.org/0000-0002-3314-8189
Journal name Marine biology
Volume number 159
Issue number 3
Start page 481
End page 488
Total pages 8
Publisher Springer
Place of publication Berlin, Germany
Publication date 2012-03
ISSN 0025-3162
Summary Whilst a range of animals have been shown to respond behaviourally to components of the Earth’s magnetic field, evidence of the value of this sensory perception for small animals advected by strong flows (wind/ocean currents) is equivocal. We added geomagnetic directional swimming behaviour for North Atlantic loggerhead turtle hatchlings (Caretta caretta) into a high-resolution (1/4°) global general circulation ocean model to simulate 2,925-year-long hatchling trajectories comprising 355,875 locations. A little directional swimming (1–3 h per day) had a major impact on trajectories; simulated hatchlings travelled further south into warmer water. As a result, thermal elevation of hatchling metabolic rates was estimated to be between 63.3 and 114.5% after 220 days. We show that even small animals in strong flows can benefit from geomagnetic orientation and thus the potential implications of directional swimming for other taxa may be broad.
Language eng
DOI 10.1007/s00227-011-1825-1
Field of Research 069999 Biological Sciences not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30058234

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