Schooling pattern of eastern Bering Sea walleye pollock and its effect on fishing behaviour
Abstract 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 Walleye pollock (Theragra chalcogramma) form persistent midwater and near-bottom schools...
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Language: | English |
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2009
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsp071 http://academic.oup.com/icesjms/article-pdf/66/6/1284/29133683/fsp071.pdf |
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croxfordunivpr:10.1093/icesjms/fsp071 2023-05-15T15:43:20+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 http://dx.doi.org/10.1093/icesjms/fsp071 http://academic.oup.com/icesjms/article-pdf/66/6/1284/29133683/fsp071.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 66, issue 6, page 1284-1288 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2009 croxfordunivpr https://doi.org/10.1093/icesjms/fsp071 2022-04-15T06:31:30Z Abstract 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 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. Article in Journal/Newspaper Bering Sea Theragra chalcogramma Oxford University Press (via Crossref) Bering Sea ICES Journal of Marine Science 66 6 1284 1288 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography 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 |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract 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 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 |
Article in Journal/Newspaper |
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 (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/icesjms/fsp071 http://academic.oup.com/icesjms/article-pdf/66/6/1284/29133683/fsp071.pdf |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Theragra chalcogramma |
genre_facet |
Bering Sea Theragra chalcogramma |
op_source |
ICES Journal of Marine Science volume 66, issue 6, page 1284-1288 ISSN 1095-9289 1054-3139 |
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 |
_version_ |
1766377411242360832 |