Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery
Recaptures of Atlantic salmon (Salmo salar) tagged as smolts show that substantial numbers of those produced in the Maritimes are caught in Greenland waters. Percentage recoveries in the home-river system show a significant inverse correlation with levels of catches in Greenland. Analyses of detaile...
Published in: | Journal of the Fisheries Research Board of Canada |
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Canadian Science Publishing
1974
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Online Access: | http://dx.doi.org/10.1139/f74-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-176 |
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crcansciencepubl:10.1139/f74-176 2023-12-17T10:27:16+01:00 Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery Paloheimo, J. E. Elson, P. F. 1974 http://dx.doi.org/10.1139/f74-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-176 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 31, issue 9, page 1467-1480 ISSN 0015-296X General Medicine journal-article 1974 crcansciencepubl https://doi.org/10.1139/f74-176 2023-11-19T13:39:37Z Recaptures of Atlantic salmon (Salmo salar) tagged as smolts show that substantial numbers of those produced in the Maritimes are caught in Greenland waters. Percentage recoveries in the home-river system show a significant inverse correlation with levels of catches in Greenland. Analyses of detailed data collected since 1950 indicate that the Greenland fishery has caused serious reduction of Miramichi stocks of 2-sea-winter salmon and will affect the future long-term production of Atlantic salmon in Canada.Total landings have risen higher per million smolts produced in the Miramichi system since the Greenland fishery began. The escapement from fisheries and the potential spawning stock per given numbers of smolts has dropped correspondingly. Lowered escapement has been followed by lowered abundance of progeny as reflected by density of young in nursery stream areas. Significantly, recruitment as measured in numbers of underyearlings depends more crucially on numbers of salmon escaping the fishery than on numbers of grilse. As shown by this statistical analysis, the Greenland fishery has had a direct adverse effect on the numbers of salmon surviving to enter their spawning river. Consequently, the abundant smolt runs in 1964, 1965, and 1968 produced by good escapement some 4 yr earlier failed to maintain adequate levels of recruitment and have instead been followed by all-time low commercial catches and recruitment of young in rivers. Article in Journal/Newspaper Atlantic salmon Greenland Salmo salar Canadian Science Publishing (via Crossref) Canada Greenland Journal of the Fisheries Research Board of Canada 31 9 1467 1480 |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Paloheimo, J. E. Elson, P. F. Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery |
topic_facet |
General Medicine |
description |
Recaptures of Atlantic salmon (Salmo salar) tagged as smolts show that substantial numbers of those produced in the Maritimes are caught in Greenland waters. Percentage recoveries in the home-river system show a significant inverse correlation with levels of catches in Greenland. Analyses of detailed data collected since 1950 indicate that the Greenland fishery has caused serious reduction of Miramichi stocks of 2-sea-winter salmon and will affect the future long-term production of Atlantic salmon in Canada.Total landings have risen higher per million smolts produced in the Miramichi system since the Greenland fishery began. The escapement from fisheries and the potential spawning stock per given numbers of smolts has dropped correspondingly. Lowered escapement has been followed by lowered abundance of progeny as reflected by density of young in nursery stream areas. Significantly, recruitment as measured in numbers of underyearlings depends more crucially on numbers of salmon escaping the fishery than on numbers of grilse. As shown by this statistical analysis, the Greenland fishery has had a direct adverse effect on the numbers of salmon surviving to enter their spawning river. Consequently, the abundant smolt runs in 1964, 1965, and 1968 produced by good escapement some 4 yr earlier failed to maintain adequate levels of recruitment and have instead been followed by all-time low commercial catches and recruitment of young in rivers. |
format |
Article in Journal/Newspaper |
author |
Paloheimo, J. E. Elson, P. F. |
author_facet |
Paloheimo, J. E. Elson, P. F. |
author_sort |
Paloheimo, J. E. |
title |
Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery |
title_short |
Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery |
title_full |
Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery |
title_fullStr |
Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery |
title_full_unstemmed |
Reduction of Atlantic Salmon ( Salmo salar ) Catches in Canada Attributed to the Greenland Fishery |
title_sort |
reduction of atlantic salmon ( salmo salar ) catches in canada attributed to the greenland fishery |
publisher |
Canadian Science Publishing |
publishDate |
1974 |
url |
http://dx.doi.org/10.1139/f74-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/f74-176 |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Atlantic salmon Greenland Salmo salar |
genre_facet |
Atlantic salmon Greenland Salmo salar |
op_source |
Journal of the Fisheries Research Board of Canada volume 31, issue 9, page 1467-1480 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f74-176 |
container_title |
Journal of the Fisheries Research Board of Canada |
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31 |
container_issue |
9 |
container_start_page |
1467 |
op_container_end_page |
1480 |
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1785579063578984448 |