Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation
Abstract 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: 1259–1263. A spawning aggregation of Atlantic cod (Gadus morhua) was observed at depths of 40–50 m with passive- and activ...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsp097 http://academic.oup.com/icesjms/article-pdf/66/6/1259/29134453/fsp097.pdf |
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croxfordunivpr:10.1093/icesjms/fsp097 2024-06-23T07:51:02+00:00 Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation Fudge, Susan B. Rose, George A. 2009 http://dx.doi.org/10.1093/icesjms/fsp097 http://academic.oup.com/icesjms/article-pdf/66/6/1259/29134453/fsp097.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 66, issue 6, page 1259-1263 ISSN 1095-9289 1054-3139 journal-article 2009 croxfordunivpr https://doi.org/10.1093/icesjms/fsp097 2024-06-04T06:07:32Z Abstract 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: 1259–1263. 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. Article in Journal/Newspaper atlantic cod Gadus morhua Newfoundland Oxford University Press ICES Journal of Marine Science 66 6 1259 1263 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract 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: 1259–1263. 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 |
Article in Journal/Newspaper |
author |
Fudge, Susan B. Rose, George A. |
spellingShingle |
Fudge, Susan B. Rose, George A. Passive- and active-acoustic properties of a spawning Atlantic cod (Gadus morhua) aggregation |
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 (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/icesjms/fsp097 http://academic.oup.com/icesjms/article-pdf/66/6/1259/29134453/fsp097.pdf |
genre |
atlantic cod Gadus morhua Newfoundland |
genre_facet |
atlantic cod Gadus morhua Newfoundland |
op_source |
ICES Journal of Marine Science volume 66, issue 6, page 1259-1263 ISSN 1095-9289 1054-3139 |
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_ |
1802642032240361472 |