Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach
Mismatches between biological population structure and management unit boundaries often violate the unit-stock assumption, which can reduce the accuracy and relevance of stock assessment results and lead to ineffective fishery management. Since 1972, Atlantic cod ( Gadus morhua ) have been managed i...
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fthighwire:oai:open-archive.highwire.org:icesjms:71/6/1490 2023-05-15T15:27:14+02:00 Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach Zemeckis, Douglas R. Martins, David Kerr, Lisa A. Cadrin, Steven X. 2014-09-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/71/6/1490 https://doi.org/10.1093/icesjms/fsu032 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/71/6/1490 http://dx.doi.org/10.1093/icesjms/fsu032 Copyright (C) 2014, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Original Articles TEXT 2014 fthighwire https://doi.org/10.1093/icesjms/fsu032 2015-02-28T22:23:02Z Mismatches between biological population structure and management unit boundaries often violate the unit-stock assumption, which can reduce the accuracy and relevance of stock assessment results and lead to ineffective fishery management. Since 1972, Atlantic cod ( Gadus morhua ) have been managed in US waters as two units: the Gulf of Maine and the Georges Bank stocks, both of which have experienced recent difficulties in rebuilding. An interdisciplinary review of available biological information was conducted to investigate cod population structure in US waters and to evaluate the biological appropriateness of the current two-stock model. Our review demonstrates that spawning components in the Great South Channel, Nantucket Shoals, southern New England, and Middle Atlantic are more connected with spawning components in the Gulf of Maine than on eastern Georges Bank, with which they are currently managed. Therefore, a modification of current stock boundaries is recommended to provide a more accurate representation of biological population structure. Proposed alternatives divide inshore and offshore spawning components into separate management units, thereby separating the current Georges Bank stock longitudinally. Continued research, including stock composition analysis, is required to evaluate uncertainties, delineate biological stocks, and develop sustainable management practices that account for intrastock diversity (e.g. winter and spring-spawning components that overlap spatially). Text atlantic cod Gadus morhua HighWire Press (Stanford University) Nantucket ENVELOPE(-61.917,-61.917,-74.583,-74.583) ICES Journal of Marine Science 71 6 1490 1506 |
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HighWire Press (Stanford University) |
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English |
topic |
Original Articles |
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Original Articles Zemeckis, Douglas R. Martins, David Kerr, Lisa A. Cadrin, Steven X. Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach |
topic_facet |
Original Articles |
description |
Mismatches between biological population structure and management unit boundaries often violate the unit-stock assumption, which can reduce the accuracy and relevance of stock assessment results and lead to ineffective fishery management. Since 1972, Atlantic cod ( Gadus morhua ) have been managed in US waters as two units: the Gulf of Maine and the Georges Bank stocks, both of which have experienced recent difficulties in rebuilding. An interdisciplinary review of available biological information was conducted to investigate cod population structure in US waters and to evaluate the biological appropriateness of the current two-stock model. Our review demonstrates that spawning components in the Great South Channel, Nantucket Shoals, southern New England, and Middle Atlantic are more connected with spawning components in the Gulf of Maine than on eastern Georges Bank, with which they are currently managed. Therefore, a modification of current stock boundaries is recommended to provide a more accurate representation of biological population structure. Proposed alternatives divide inshore and offshore spawning components into separate management units, thereby separating the current Georges Bank stock longitudinally. Continued research, including stock composition analysis, is required to evaluate uncertainties, delineate biological stocks, and develop sustainable management practices that account for intrastock diversity (e.g. winter and spring-spawning components that overlap spatially). |
format |
Text |
author |
Zemeckis, Douglas R. Martins, David Kerr, Lisa A. Cadrin, Steven X. |
author_facet |
Zemeckis, Douglas R. Martins, David Kerr, Lisa A. Cadrin, Steven X. |
author_sort |
Zemeckis, Douglas R. |
title |
Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach |
title_short |
Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach |
title_full |
Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach |
title_fullStr |
Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach |
title_full_unstemmed |
Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach |
title_sort |
stock identification of atlantic cod (gadus morhua) in us waters: an interdisciplinary approach |
publisher |
Oxford University Press |
publishDate |
2014 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/71/6/1490 https://doi.org/10.1093/icesjms/fsu032 |
long_lat |
ENVELOPE(-61.917,-61.917,-74.583,-74.583) |
geographic |
Nantucket |
geographic_facet |
Nantucket |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/71/6/1490 http://dx.doi.org/10.1093/icesjms/fsu032 |
op_rights |
Copyright (C) 2014, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsu032 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
6 |
container_start_page |
1490 |
op_container_end_page |
1506 |
_version_ |
1766357679948693504 |