Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques
<qd> Bui, A. O. V., Castonguay, M., Ouellet, P., and Sévigny, J-M. 2011. Searching for Atlantic cod ( Gadus morhua ) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques. – ICES Journal of Marine Science, 68: 911–918. </qd>The overexploitation of Atlant...
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fthighwire:oai:open-archive.highwire.org:icesjms:68/5/911 2023-05-15T15:26:55+02:00 Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques Bui, Alice O. V. Castonguay, Martin Ouellet, Patrick Sévigny, Jean-Marie 2011-05-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/68/5/911 https://doi.org/10.1093/icesjms/fsr016 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/68/5/911 http://dx.doi.org/10.1093/icesjms/fsr016 Copyright (C) 2011, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2011 fthighwire https://doi.org/10.1093/icesjms/fsr016 2011-04-25T12:36:11Z <qd> Bui, A. O. V., Castonguay, M., Ouellet, P., and Sévigny, J-M. 2011. Searching for Atlantic cod ( Gadus morhua ) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques. – ICES Journal of Marine Science, 68: 911–918. </qd>The overexploitation of Atlantic cod ( Gadus morhua ) in the Northwest Atlantic led to the collapse of most stocks and the demise of spawning components in the early 1990s. In the northern Gulf of St Lawrence, the spawning component of Northwest Atlantic Fishery Organization Division 4S was believed no longer to exist after the collapse. To verify this hypothesis, we used molecular techniques to identify cod, haddock, and witch flounder (CHW) eggs precisely, in an attempt to locate the potential remaining spawning sites for cod in the northwest Gulf. Ichthyoplankton surveys were conducted in spring from 2005 to 2008. Results were compared with those of surveys that took place in spring in the same area 20 years earlier to determine if there had been any changes in spawning location and egg abundance. Atlantic cod made up the majority (97%) of CHW eggs identified. The presence of stage I cod eggs proved that there is still a cod spawning component in the northwest Gulf of St Lawrence, but egg abundance has declined by about an order of magnitude compared with the 1980s. There was no obvious difference in the location of cod spawning grounds between the two decades. Text atlantic cod Gadus morhua Northwest Atlantic HighWire Press (Stanford University) Canada ICES Journal of Marine Science 68 5 911 918 |
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Articles Bui, Alice O. V. Castonguay, Martin Ouellet, Patrick Sévigny, Jean-Marie Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques |
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Articles |
description |
<qd> Bui, A. O. V., Castonguay, M., Ouellet, P., and Sévigny, J-M. 2011. Searching for Atlantic cod ( Gadus morhua ) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques. – ICES Journal of Marine Science, 68: 911–918. </qd>The overexploitation of Atlantic cod ( Gadus morhua ) in the Northwest Atlantic led to the collapse of most stocks and the demise of spawning components in the early 1990s. In the northern Gulf of St Lawrence, the spawning component of Northwest Atlantic Fishery Organization Division 4S was believed no longer to exist after the collapse. To verify this hypothesis, we used molecular techniques to identify cod, haddock, and witch flounder (CHW) eggs precisely, in an attempt to locate the potential remaining spawning sites for cod in the northwest Gulf. Ichthyoplankton surveys were conducted in spring from 2005 to 2008. Results were compared with those of surveys that took place in spring in the same area 20 years earlier to determine if there had been any changes in spawning location and egg abundance. Atlantic cod made up the majority (97%) of CHW eggs identified. The presence of stage I cod eggs proved that there is still a cod spawning component in the northwest Gulf of St Lawrence, but egg abundance has declined by about an order of magnitude compared with the 1980s. There was no obvious difference in the location of cod spawning grounds between the two decades. |
format |
Text |
author |
Bui, Alice O. V. Castonguay, Martin Ouellet, Patrick Sévigny, Jean-Marie |
author_facet |
Bui, Alice O. V. Castonguay, Martin Ouellet, Patrick Sévigny, Jean-Marie |
author_sort |
Bui, Alice O. V. |
title |
Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques |
title_short |
Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques |
title_full |
Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques |
title_fullStr |
Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques |
title_full_unstemmed |
Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques |
title_sort |
searching for atlantic cod (gadus morhua) spawning sites in the northwest gulf of st lawrence (canada) using molecular techniques |
publisher |
Oxford University Press |
publishDate |
2011 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/68/5/911 https://doi.org/10.1093/icesjms/fsr016 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
atlantic cod Gadus morhua Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Northwest Atlantic |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/68/5/911 http://dx.doi.org/10.1093/icesjms/fsr016 |
op_rights |
Copyright (C) 2011, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsr016 |
container_title |
ICES Journal of Marine Science |
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68 |
container_issue |
5 |
container_start_page |
911 |
op_container_end_page |
918 |
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1766357385160425472 |