Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters
<qd> Jónsdóttir, I. G., Marteinsdottir, G., and Campana, S. E. 2007. Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters. – ICES Journal of Marine Science, 64: 000–000. </qd>Otolith chemistry and length-at-age were used to estimate the con...
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fthighwire:oai:open-archive.highwire.org:icesjms:fsm157v1 2023-05-15T16:19:17+02:00 Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters Jónsdóttir, Ingibjörg G. Marteinsdottir, Gudrun Campana, Steven E. 2007-11-02 03:33:57.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fsm157v1 https://doi.org/10.1093/icesjms/fsm157 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fsm157v1 http://dx.doi.org/10.1093/icesjms/fsm157 Copyright (C) 2007, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Article TEXT 2007 fthighwire https://doi.org/10.1093/icesjms/fsm157 2013-05-26T22:25:41Z <qd> Jónsdóttir, I. G., Marteinsdottir, G., and Campana, S. E. 2007. Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters. – ICES Journal of Marine Science, 64: 000–000. </qd>Otolith chemistry and length-at-age were used to estimate the contribution of different spawning components to the harvested stock of cod ( Gadus morhua ) at two of their main feeding grounds northwest and east of Iceland. Spawning cod were sampled at different spawning locations around Iceland in spring of 2002 and 2003. Significant differences were detected between cod from the different spawning locations. Cod of unknown stock origin were also sampled at two of the main feeding grounds in October of the same years. Analyses based on maximum likelihood were used to estimate the proportion of each spawning group in the mixed stock catches using otolith chemistry and fish length-at-age. Attempts to use otolith shape to estimate the contribution of the spawning groups to the mixed harvested stock were, however, unsuccessful. The results indicated that spawning locations northwest and north of Iceland, as well as in water deeper than 125 m south of Iceland, contributed the most to the harvested stock. Cod spawning shallower than 125 m south of Iceland did not contribute to the feeding grounds in October of 2002 and 2003. Therefore, exploitation of the feeding stock mixtures seems to be based on spawning components that have previously been considered to be of minor importance to the Icelandic cod stock. Text Gadus morhua Iceland HighWire Press (Stanford University) ICES Journal of Marine Science 64 9 1749 1759 |
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HighWire Press (Stanford University) |
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English |
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Article Jónsdóttir, Ingibjörg G. Marteinsdottir, Gudrun Campana, Steven E. Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters |
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Article |
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<qd> Jónsdóttir, I. G., Marteinsdottir, G., and Campana, S. E. 2007. Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters. – ICES Journal of Marine Science, 64: 000–000. </qd>Otolith chemistry and length-at-age were used to estimate the contribution of different spawning components to the harvested stock of cod ( Gadus morhua ) at two of their main feeding grounds northwest and east of Iceland. Spawning cod were sampled at different spawning locations around Iceland in spring of 2002 and 2003. Significant differences were detected between cod from the different spawning locations. Cod of unknown stock origin were also sampled at two of the main feeding grounds in October of the same years. Analyses based on maximum likelihood were used to estimate the proportion of each spawning group in the mixed stock catches using otolith chemistry and fish length-at-age. Attempts to use otolith shape to estimate the contribution of the spawning groups to the mixed harvested stock were, however, unsuccessful. The results indicated that spawning locations northwest and north of Iceland, as well as in water deeper than 125 m south of Iceland, contributed the most to the harvested stock. Cod spawning shallower than 125 m south of Iceland did not contribute to the feeding grounds in October of 2002 and 2003. Therefore, exploitation of the feeding stock mixtures seems to be based on spawning components that have previously been considered to be of minor importance to the Icelandic cod stock. |
format |
Text |
author |
Jónsdóttir, Ingibjörg G. Marteinsdottir, Gudrun Campana, Steven E. |
author_facet |
Jónsdóttir, Ingibjörg G. Marteinsdottir, Gudrun Campana, Steven E. |
author_sort |
Jónsdóttir, Ingibjörg G. |
title |
Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters |
title_short |
Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters |
title_full |
Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters |
title_fullStr |
Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters |
title_full_unstemmed |
Contribution of different spawning components to the mixed stock fishery for cod in Icelandic waters |
title_sort |
contribution of different spawning components to the mixed stock fishery for cod in icelandic waters |
publisher |
Oxford University Press |
publishDate |
2007 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fsm157v1 https://doi.org/10.1093/icesjms/fsm157 |
genre |
Gadus morhua Iceland |
genre_facet |
Gadus morhua Iceland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fsm157v1 http://dx.doi.org/10.1093/icesjms/fsm157 |
op_rights |
Copyright (C) 2007, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsm157 |
container_title |
ICES Journal of Marine Science |
container_volume |
64 |
container_issue |
9 |
container_start_page |
1749 |
op_container_end_page |
1759 |
_version_ |
1766005667214131200 |