Executive summary
The NPFMC is considering action that would treat the eastern Bering Sea and Aleutian Islands separately for the purposes of Pacific cod management. This report is intended to summarize existing biological information on Pacific cod that may be useful in evaluating this action. The following conclusi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.161.744 2023-05-15T14:18:06+02:00 Executive summary Olav A. Ormseth Mike Canino Liz Conners I Neidetcher Peter Munro Sarah Gaichas The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.161.744 http://www.fakr.noaa.gov/npfmc/current_issues/pcod/pcodbiology908.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.161.744 http://www.fakr.noaa.gov/npfmc/current_issues/pcod/pcodbiology908.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.fakr.noaa.gov/npfmc/current_issues/pcod/pcodbiology908.pdf text 2008 ftciteseerx 2016-01-07T15:45:08Z The NPFMC is considering action that would treat the eastern Bering Sea and Aleutian Islands separately for the purposes of Pacific cod management. This report is intended to summarize existing biological information on Pacific cod that may be useful in evaluating this action. The following conclusions may be useful and are described in greater detail in the report: 1) There is highly significant genetic isolation by distance in the Pacific cod stocks of North America (i.e. genetic differences among individuals increase with geographic distance; Fig. 1-2).This result, as well as several different genetic comparisons among regional groupings, suggest that Pacific cod stocks in the Aleutian Islands archipelago are distinct from those along the contiguous Alaska Peninsula. 2) In 2005, length at age was significantly higher in the AI than in the EBS for both female and male cod (Table 2-1, Figs. 2-2 & 2-3). This difference is present at all ages. 3) Commercial trawls in the AI catch bigger female and male cod than do trawls in the EBS (Figs. 3-1, 3-2 & 3-3). From 2004 to 2006, the mode for cod in the EBS occurred at 65-70 cm, while the mode for females in the AI occurred at 80-85 cm. Fish smaller than 50 cm were evident in EBS trawls, but were rare in the AI. Text Archipelago Bering Sea Alaska Aleutian Islands Unknown Bering Sea Pacific |
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ftciteseerx |
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English |
description |
The NPFMC is considering action that would treat the eastern Bering Sea and Aleutian Islands separately for the purposes of Pacific cod management. This report is intended to summarize existing biological information on Pacific cod that may be useful in evaluating this action. The following conclusions may be useful and are described in greater detail in the report: 1) There is highly significant genetic isolation by distance in the Pacific cod stocks of North America (i.e. genetic differences among individuals increase with geographic distance; Fig. 1-2).This result, as well as several different genetic comparisons among regional groupings, suggest that Pacific cod stocks in the Aleutian Islands archipelago are distinct from those along the contiguous Alaska Peninsula. 2) In 2005, length at age was significantly higher in the AI than in the EBS for both female and male cod (Table 2-1, Figs. 2-2 & 2-3). This difference is present at all ages. 3) Commercial trawls in the AI catch bigger female and male cod than do trawls in the EBS (Figs. 3-1, 3-2 & 3-3). From 2004 to 2006, the mode for cod in the EBS occurred at 65-70 cm, while the mode for females in the AI occurred at 80-85 cm. Fish smaller than 50 cm were evident in EBS trawls, but were rare in the AI. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Olav A. Ormseth Mike Canino Liz Conners I Neidetcher Peter Munro Sarah Gaichas |
spellingShingle |
Olav A. Ormseth Mike Canino Liz Conners I Neidetcher Peter Munro Sarah Gaichas Executive summary |
author_facet |
Olav A. Ormseth Mike Canino Liz Conners I Neidetcher Peter Munro Sarah Gaichas |
author_sort |
Olav A. Ormseth |
title |
Executive summary |
title_short |
Executive summary |
title_full |
Executive summary |
title_fullStr |
Executive summary |
title_full_unstemmed |
Executive summary |
title_sort |
executive summary |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.161.744 http://www.fakr.noaa.gov/npfmc/current_issues/pcod/pcodbiology908.pdf |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Archipelago Bering Sea Alaska Aleutian Islands |
genre_facet |
Archipelago Bering Sea Alaska Aleutian Islands |
op_source |
http://www.fakr.noaa.gov/npfmc/current_issues/pcod/pcodbiology908.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.161.744 http://www.fakr.noaa.gov/npfmc/current_issues/pcod/pcodbiology908.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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