Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field?
Albatrosses and sea turtles are known to perform extremely long-distance journeys between disparate feeding areas and breeding sites located on small, isolated, oceanic islands or at specific coastal sites. These oceanic journeys, performed mainly over or through apparently featureless mediums, indi...
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2001
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Online Access: | https://lup.lub.lu.se/record/149972 https://doi.org/10.1017/S037346330100147 https://portal.research.lu.se/files/2540184/625248.pdf |
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ftulundlup:oai:lup.lub.lu.se:3beba9f3-a9d2-4a52-9d84-7861c166c2ed 2023-05-15T18:21:16+02:00 Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? Åkesson, Susanne Luschi, P Papi, F Broderick, A C Glen, F Godley, B J Hays, G C 2001 application/pdf https://lup.lub.lu.se/record/149972 https://doi.org/10.1017/S037346330100147 https://portal.research.lu.se/files/2540184/625248.pdf eng eng Cambridge University Press https://lup.lub.lu.se/record/149972 http://dx.doi.org/10.1017/S037346330100147 https://portal.research.lu.se/files/2540184/625248.pdf wos:000171597100011 info:eu-repo/semantics/openAccess Journal of Navigation; 54(3), pp 419-427 (2001) ISSN: 0373-4633 Biological Sciences contributiontojournal/article info:eu-repo/semantics/article text 2001 ftulundlup https://doi.org/10.1017/S037346330100147 2023-02-01T23:28:40Z Albatrosses and sea turtles are known to perform extremely long-distance journeys between disparate feeding areas and breeding sites located on small, isolated, oceanic islands or at specific coastal sites. These oceanic journeys, performed mainly over or through apparently featureless mediums, indicate impressive navigational abilities, and the sensory mechanisms used are still largely unknown. This research used three different approaches to investigate whether bi-coordinate navigation based on magnetic field gradients is likely to explain the navigational performance of wandering albatrosses in the South Atlantic and Indian Oceans and of green turtles breeding on Ascension Island in the South Atlantic Ocean. The possibility that magnetic field parameters can potentially be used in a bi-coordinate magnetic map by wandering albatrosses in their foraging area was investigated by analysing satellite telemetry data published in the literature. The possibilities for using bi-coordinate magnetic navigation varied widely between different areas of the Southern Oceans, indicating that a common mechanism, based on a bi-coordinate geomagnetic map alone, was unlikely for navigation in these areas. In the second approach, satellite telemetry was used to investigate whether Ascension Island green turtles use magnetic information for navigation during migration from their breeding island to foraging areas in Brazilian coastal waters. Disturbing magnets were applied to the heads and carapaces of the turtles, but these appeared to have little effect on their ability to navigate. The only possible effect observed was that some of the turtles with magnets attached were heading for foraging areas slightly south of the control turtles along the Brazilian coast. In the third approach, breeding female green turtles were deliberately displaced in the waters around Ascension Island to investigate which cues these turtles might use to locate and return to the island; the results suggested that cues transported by wind might be ... Article in Journal/Newspaper South Atlantic Ocean Lund University Publications (LUP) Indian |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Biological Sciences |
spellingShingle |
Biological Sciences Åkesson, Susanne Luschi, P Papi, F Broderick, A C Glen, F Godley, B J Hays, G C Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? |
topic_facet |
Biological Sciences |
description |
Albatrosses and sea turtles are known to perform extremely long-distance journeys between disparate feeding areas and breeding sites located on small, isolated, oceanic islands or at specific coastal sites. These oceanic journeys, performed mainly over or through apparently featureless mediums, indicate impressive navigational abilities, and the sensory mechanisms used are still largely unknown. This research used three different approaches to investigate whether bi-coordinate navigation based on magnetic field gradients is likely to explain the navigational performance of wandering albatrosses in the South Atlantic and Indian Oceans and of green turtles breeding on Ascension Island in the South Atlantic Ocean. The possibility that magnetic field parameters can potentially be used in a bi-coordinate magnetic map by wandering albatrosses in their foraging area was investigated by analysing satellite telemetry data published in the literature. The possibilities for using bi-coordinate magnetic navigation varied widely between different areas of the Southern Oceans, indicating that a common mechanism, based on a bi-coordinate geomagnetic map alone, was unlikely for navigation in these areas. In the second approach, satellite telemetry was used to investigate whether Ascension Island green turtles use magnetic information for navigation during migration from their breeding island to foraging areas in Brazilian coastal waters. Disturbing magnets were applied to the heads and carapaces of the turtles, but these appeared to have little effect on their ability to navigate. The only possible effect observed was that some of the turtles with magnets attached were heading for foraging areas slightly south of the control turtles along the Brazilian coast. In the third approach, breeding female green turtles were deliberately displaced in the waters around Ascension Island to investigate which cues these turtles might use to locate and return to the island; the results suggested that cues transported by wind might be ... |
format |
Article in Journal/Newspaper |
author |
Åkesson, Susanne Luschi, P Papi, F Broderick, A C Glen, F Godley, B J Hays, G C |
author_facet |
Åkesson, Susanne Luschi, P Papi, F Broderick, A C Glen, F Godley, B J Hays, G C |
author_sort |
Åkesson, Susanne |
title |
Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? |
title_short |
Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? |
title_full |
Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? |
title_fullStr |
Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? |
title_full_unstemmed |
Oceanic long-distance navigation: Do experienced migrants use the Earth's magnetic field? |
title_sort |
oceanic long-distance navigation: do experienced migrants use the earth's magnetic field? |
publisher |
Cambridge University Press |
publishDate |
2001 |
url |
https://lup.lub.lu.se/record/149972 https://doi.org/10.1017/S037346330100147 https://portal.research.lu.se/files/2540184/625248.pdf |
geographic |
Indian |
geographic_facet |
Indian |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Journal of Navigation; 54(3), pp 419-427 (2001) ISSN: 0373-4633 |
op_relation |
https://lup.lub.lu.se/record/149972 http://dx.doi.org/10.1017/S037346330100147 https://portal.research.lu.se/files/2540184/625248.pdf wos:000171597100011 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/S037346330100147 |
_version_ |
1766200457141682176 |