Searching for Atlantic cod (Gadus morhua) spawning sites in the northwest Gulf of St Lawrence (Canada) using molecular techniques
Abstract 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. The overexploitation of Atlantic cod (Gadus m...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr016 http://academic.oup.com/icesjms/article-pdf/68/5/911/29138528/fsr016.pdf |
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croxfordunivpr:10.1093/icesjms/fsr016 2023-10-29T02:34:54+01:00 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 http://dx.doi.org/10.1093/icesjms/fsr016 http://academic.oup.com/icesjms/article-pdf/68/5/911/29138528/fsr016.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 68, issue 5, page 911-918 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2011 croxfordunivpr https://doi.org/10.1093/icesjms/fsr016 2023-09-29T10:53:28Z Abstract 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. 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. Article in Journal/Newspaper atlantic cod Gadus morhua Northwest Atlantic Oxford University Press (via Crossref) ICES Journal of Marine Science 68 5 911 918 |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
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croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
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Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography 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 |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract 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. 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 |
Article in Journal/Newspaper |
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 (OUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1093/icesjms/fsr016 http://academic.oup.com/icesjms/article-pdf/68/5/911/29138528/fsr016.pdf |
genre |
atlantic cod Gadus morhua Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Northwest Atlantic |
op_source |
ICES Journal of Marine Science volume 68, issue 5, page 911-918 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsr016 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
5 |
container_start_page |
911 |
op_container_end_page |
918 |
_version_ |
1781057794813722624 |