Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation
<qd> Fudge, S. B., and Rose, G. A. 2009. Passive- and active-acoustic properties of a spawning Atlantic cod ( Gadus morhua ) aggregation. – ICES Journal of Marine Science, 66: 000–000. </qd>A spawning aggregation of Atlantic cod ( Gadus morhua ) was observed at depths of 40–50 m with pas...
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fthighwire:oai:open-archive.highwire.org:icesjms:fsp097v1 2023-05-15T15:26:55+02:00 Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation Fudge, Susan B. Rose, George A. 2009-04-20 01:57:56.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fsp097v1 https://doi.org/10.1093/icesjms/fsp097 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fsp097v1 http://dx.doi.org/10.1093/icesjms/fsp097 Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer SEAFACTS TEXT 2009 fthighwire https://doi.org/10.1093/icesjms/fsp097 2013-05-26T22:26:07Z <qd> Fudge, S. B., and Rose, G. A. 2009. Passive- and active-acoustic properties of a spawning Atlantic cod ( Gadus morhua ) aggregation. – ICES Journal of Marine Science, 66: 000–000. </qd>A spawning aggregation of Atlantic cod ( Gadus morhua ) was observed at depths of 40–50 m with passive- and active-acoustic sensors at the Bar Haven grounds in Placentia Bay, Newfoundland, in April 2003. A hydrophone was positioned on the seabed beneath the aggregation, while a 38-kHz split-beam echosounder was moored at the sea surface above it for 18.5 h. Ten grunts were recorded with peak frequencies ranging from 30 to 250 Hz and durations of nearly 300 ms. These grunts are similar to the sounds recorded in the presence of captive, spawning cod from the same substock. The echogram reveals that cod exhibit diel, vertical-migratory behaviour, densely aggregating near the seabed by day and forming columns that extend approximately halfway to the surface at night. This is the first study to demonstrate that cod produce sounds and form columns while migrating vertically during night-time spawning. Text atlantic cod Gadus morhua Newfoundland HighWire Press (Stanford University) ICES Journal of Marine Science 66 6 1259 1263 |
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HighWire Press (Stanford University) |
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English |
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SEAFACTS Fudge, Susan B. Rose, George A. Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
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SEAFACTS |
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<qd> Fudge, S. B., and Rose, G. A. 2009. Passive- and active-acoustic properties of a spawning Atlantic cod ( Gadus morhua ) aggregation. – ICES Journal of Marine Science, 66: 000–000. </qd>A spawning aggregation of Atlantic cod ( Gadus morhua ) was observed at depths of 40–50 m with passive- and active-acoustic sensors at the Bar Haven grounds in Placentia Bay, Newfoundland, in April 2003. A hydrophone was positioned on the seabed beneath the aggregation, while a 38-kHz split-beam echosounder was moored at the sea surface above it for 18.5 h. Ten grunts were recorded with peak frequencies ranging from 30 to 250 Hz and durations of nearly 300 ms. These grunts are similar to the sounds recorded in the presence of captive, spawning cod from the same substock. The echogram reveals that cod exhibit diel, vertical-migratory behaviour, densely aggregating near the seabed by day and forming columns that extend approximately halfway to the surface at night. This is the first study to demonstrate that cod produce sounds and form columns while migrating vertically during night-time spawning. |
format |
Text |
author |
Fudge, Susan B. Rose, George A. |
author_facet |
Fudge, Susan B. Rose, George A. |
author_sort |
Fudge, Susan B. |
title |
Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
title_short |
Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
title_full |
Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
title_fullStr |
Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
title_full_unstemmed |
Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
title_sort |
passive- and active-acoustic properties of a spawning atlantic cod (gadus morhua) aggregation |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fsp097v1 https://doi.org/10.1093/icesjms/fsp097 |
genre |
atlantic cod Gadus morhua Newfoundland |
genre_facet |
atlantic cod Gadus morhua Newfoundland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fsp097v1 http://dx.doi.org/10.1093/icesjms/fsp097 |
op_rights |
Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsp097 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
6 |
container_start_page |
1259 |
op_container_end_page |
1263 |
_version_ |
1766357395948175360 |