Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography
Magnetosensitivity of the Japanese eel, Anguilla japonica , was examined by conditioning and electrocardiography. Marine eels, river eels and farmed eels were conditioned to an imposed magnetic field ranging from 12 663 nT to 192 473 nT parallel to the fish body, which was placed along the earth...
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fthighwire:oai:open-archive.highwire.org:jexbio:207/17/2965 2023-05-15T13:27:46+02:00 Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography Nishi, Takaaki Kawamura, Gunzo Matsumoto, Keisuke 2004-08-01 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/207/17/2965 https://doi.org/10.1242/jeb.01131 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/207/17/2965 http://dx.doi.org/10.1242/jeb.01131 Copyright (C) 2004, Company of Biologists Research Article TEXT 2004 fthighwire https://doi.org/10.1242/jeb.01131 2015-02-28T21:59:12Z Magnetosensitivity of the Japanese eel, Anguilla japonica , was examined by conditioning and electrocardiography. Marine eels, river eels and farmed eels were conditioned to an imposed magnetic field ranging from 12 663 nT to 192 473 nT parallel to the fish body, which was placed along the earth's west-east axis. Electrocardiograms were recorded with electrodes placed close to the fish body inside a PVC pipe shelter. After 10-40 conditioning runs, all the eels exhibited a significant conditioned response (i.e. slowing of the heart beat) to a 192 473 nT magnetic field and even to a 12 663 nT magnetic field, respectively equivalent to 5.92× and 0.38× the horizontal geomagnetic field (32 524 nT) at our laboratory. The west-east vector of the imposed magnetic field (12 663 nT) combined with that of the geomagnetic field and produced a horizontal resultant magnetic field of 21° easterly. Therefore, Japanese eel are magnetosensitive whether they are at sea, in the river or in the farm. Results of the present study were compared with those of past studies that showed no magnetic sense in the American eel, Anguilla rostrata , and the European eel, Anguilla anguilla . Text Anguilla anguilla HighWire Press (Stanford University) Journal of Experimental Biology 207 17 2965 2970 |
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HighWire Press (Stanford University) |
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English |
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Research Article |
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Research Article Nishi, Takaaki Kawamura, Gunzo Matsumoto, Keisuke Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography |
topic_facet |
Research Article |
description |
Magnetosensitivity of the Japanese eel, Anguilla japonica , was examined by conditioning and electrocardiography. Marine eels, river eels and farmed eels were conditioned to an imposed magnetic field ranging from 12 663 nT to 192 473 nT parallel to the fish body, which was placed along the earth's west-east axis. Electrocardiograms were recorded with electrodes placed close to the fish body inside a PVC pipe shelter. After 10-40 conditioning runs, all the eels exhibited a significant conditioned response (i.e. slowing of the heart beat) to a 192 473 nT magnetic field and even to a 12 663 nT magnetic field, respectively equivalent to 5.92× and 0.38× the horizontal geomagnetic field (32 524 nT) at our laboratory. The west-east vector of the imposed magnetic field (12 663 nT) combined with that of the geomagnetic field and produced a horizontal resultant magnetic field of 21° easterly. Therefore, Japanese eel are magnetosensitive whether they are at sea, in the river or in the farm. Results of the present study were compared with those of past studies that showed no magnetic sense in the American eel, Anguilla rostrata , and the European eel, Anguilla anguilla . |
format |
Text |
author |
Nishi, Takaaki Kawamura, Gunzo Matsumoto, Keisuke |
author_facet |
Nishi, Takaaki Kawamura, Gunzo Matsumoto, Keisuke |
author_sort |
Nishi, Takaaki |
title |
Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography |
title_short |
Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography |
title_full |
Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography |
title_fullStr |
Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography |
title_full_unstemmed |
Magnetic sense in the Japanese eel, Anguilla japonica, as determined by conditioning and electrocardiography |
title_sort |
magnetic sense in the japanese eel, anguilla japonica, as determined by conditioning and electrocardiography |
publisher |
Company of Biologists |
publishDate |
2004 |
url |
http://jeb.biologists.org/cgi/content/short/207/17/2965 https://doi.org/10.1242/jeb.01131 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
http://jeb.biologists.org/cgi/content/short/207/17/2965 http://dx.doi.org/10.1242/jeb.01131 |
op_rights |
Copyright (C) 2004, Company of Biologists |
op_doi |
https://doi.org/10.1242/jeb.01131 |
container_title |
Journal of Experimental Biology |
container_volume |
207 |
container_issue |
17 |
container_start_page |
2965 |
op_container_end_page |
2970 |
_version_ |
1766400294693896192 |