Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour
<qd> Shen, H., Dorn, M. W., Wespestad, V., and Quinn, T. J. 2009. Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour. – ICES Journal of Marine Science, 66: 1284–1288 </qd>Walleye pollock ( Theragra chalcogramma ) form persistent midwater and near-...
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fthighwire:oai:open-archive.highwire.org:icesjms:66/6/1284 2023-05-15T15:43:19+02:00 Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour Shen, Haixue Dorn, Martin W. Wespestad, Vidar Quinn, Terrance J. 2009-07-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1284 https://doi.org/10.1093/icesjms/fsp071 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1284 http://dx.doi.org/10.1093/icesjms/fsp071 Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2009 fthighwire https://doi.org/10.1093/icesjms/fsp071 2009-07-03T20:19:12Z <qd> Shen, H., Dorn, M. W., Wespestad, V., and Quinn, T. J. 2009. Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour. – ICES Journal of Marine Science, 66: 1284–1288 </qd>Walleye pollock ( Theragra chalcogramma ) form persistent midwater and near-bottom schools in the daytime during the winter spawning season in the eastern Bering Sea (EBS). Two spawning areas in the EBS, north of Unimak Island and near the Pribilof Islands, are the main fishing grounds. To study the schooling pattern of pollock and its effect on fishing behaviour on these two fishing grounds, a principal component analysis with instrumental variables was carried out using acoustic and observer data from 2003 and 2005. Significant differences between the school descriptors distinguished the schooling patterns among areas and years. The harvester, that is to say, the fishing vessel and its crew taken together, searched for fish aggregations, which were caught in a different manner when the schooling pattern changed. School density had a greater effect than school size on fishing behaviour. Aggregations were less dense in 2003 than in 2005, and the harvester tended to fish with longer tows, at higher speeds, when it encountered less dense aggregations. Text Bering Sea Theragra chalcogramma HighWire Press (Stanford University) Bering Sea ICES Journal of Marine Science 66 6 1284 1288 |
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HighWire Press (Stanford University) |
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English |
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Articles Shen, Haixue Dorn, Martin W. Wespestad, Vidar Quinn, Terrance J. Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour |
topic_facet |
Articles |
description |
<qd> Shen, H., Dorn, M. W., Wespestad, V., and Quinn, T. J. 2009. Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour. – ICES Journal of Marine Science, 66: 1284–1288 </qd>Walleye pollock ( Theragra chalcogramma ) form persistent midwater and near-bottom schools in the daytime during the winter spawning season in the eastern Bering Sea (EBS). Two spawning areas in the EBS, north of Unimak Island and near the Pribilof Islands, are the main fishing grounds. To study the schooling pattern of pollock and its effect on fishing behaviour on these two fishing grounds, a principal component analysis with instrumental variables was carried out using acoustic and observer data from 2003 and 2005. Significant differences between the school descriptors distinguished the schooling patterns among areas and years. The harvester, that is to say, the fishing vessel and its crew taken together, searched for fish aggregations, which were caught in a different manner when the schooling pattern changed. School density had a greater effect than school size on fishing behaviour. Aggregations were less dense in 2003 than in 2005, and the harvester tended to fish with longer tows, at higher speeds, when it encountered less dense aggregations. |
format |
Text |
author |
Shen, Haixue Dorn, Martin W. Wespestad, Vidar Quinn, Terrance J. |
author_facet |
Shen, Haixue Dorn, Martin W. Wespestad, Vidar Quinn, Terrance J. |
author_sort |
Shen, Haixue |
title |
Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour |
title_short |
Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour |
title_full |
Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour |
title_fullStr |
Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour |
title_full_unstemmed |
Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour |
title_sort |
schooling pattern of eastern bering sea walleye pollock and its effect on fishing behaviour |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1284 https://doi.org/10.1093/icesjms/fsp071 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Theragra chalcogramma |
genre_facet |
Bering Sea Theragra chalcogramma |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/66/6/1284 http://dx.doi.org/10.1093/icesjms/fsp071 |
op_rights |
Copyright (C) 2009, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsp071 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
6 |
container_start_page |
1284 |
op_container_end_page |
1288 |
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1766377405288546304 |