A Gillnet Fishery Considered as an Experiment in Artificial Selection
Temporal patterns of change in growth, condition, and mean age of samples of lake whitefish (Coregonus clupeaformis) taken from Lesser Slave Lake, Alberta, during 1941–75 are described. Growth rate and condition have declined, while mean age has increased. Gillnet fisheries are highly selective of l...
Published in: | Journal of the Fisheries Research Board of Canada |
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Language: | English |
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Canadian Science Publishing
1977
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Online Access: | http://dx.doi.org/10.1139/f77-148 http://www.nrcresearchpress.com/doi/pdf/10.1139/f77-148 |
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crcansciencepubl:10.1139/f77-148 2024-06-23T07:54:28+00:00 A Gillnet Fishery Considered as an Experiment in Artificial Selection Handford, Paul Bell, Graham Reimchen, Tom 1977 http://dx.doi.org/10.1139/f77-148 http://www.nrcresearchpress.com/doi/pdf/10.1139/f77-148 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 34, issue 7, page 954-961 ISSN 0015-296X journal-article 1977 crcansciencepubl https://doi.org/10.1139/f77-148 2024-05-24T13:05:52Z Temporal patterns of change in growth, condition, and mean age of samples of lake whitefish (Coregonus clupeaformis) taken from Lesser Slave Lake, Alberta, during 1941–75 are described. Growth rate and condition have declined, while mean age has increased. Gillnet fisheries are highly selective of large, heavy, fast-growing individuals, and we suggest that culling of this sort will provoke an evolutionary response in the stock, which may be reflected in patterns of change in growth and age. This hypothesis and others are discussed, and the general importance of artificial selection in lake fisheries is briefly considered. The possible implications for fishery management are outlined. Key words: artificial selection, evolution, growth rate, gillnet, Coregonus clupeaformis. Article in Journal/Newspaper Lesser Slave lake Slave Lake Canadian Science Publishing Journal of the Fisheries Research Board of Canada 34 7 954 961 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Temporal patterns of change in growth, condition, and mean age of samples of lake whitefish (Coregonus clupeaformis) taken from Lesser Slave Lake, Alberta, during 1941–75 are described. Growth rate and condition have declined, while mean age has increased. Gillnet fisheries are highly selective of large, heavy, fast-growing individuals, and we suggest that culling of this sort will provoke an evolutionary response in the stock, which may be reflected in patterns of change in growth and age. This hypothesis and others are discussed, and the general importance of artificial selection in lake fisheries is briefly considered. The possible implications for fishery management are outlined. Key words: artificial selection, evolution, growth rate, gillnet, Coregonus clupeaformis. |
format |
Article in Journal/Newspaper |
author |
Handford, Paul Bell, Graham Reimchen, Tom |
spellingShingle |
Handford, Paul Bell, Graham Reimchen, Tom A Gillnet Fishery Considered as an Experiment in Artificial Selection |
author_facet |
Handford, Paul Bell, Graham Reimchen, Tom |
author_sort |
Handford, Paul |
title |
A Gillnet Fishery Considered as an Experiment in Artificial Selection |
title_short |
A Gillnet Fishery Considered as an Experiment in Artificial Selection |
title_full |
A Gillnet Fishery Considered as an Experiment in Artificial Selection |
title_fullStr |
A Gillnet Fishery Considered as an Experiment in Artificial Selection |
title_full_unstemmed |
A Gillnet Fishery Considered as an Experiment in Artificial Selection |
title_sort |
gillnet fishery considered as an experiment in artificial selection |
publisher |
Canadian Science Publishing |
publishDate |
1977 |
url |
http://dx.doi.org/10.1139/f77-148 http://www.nrcresearchpress.com/doi/pdf/10.1139/f77-148 |
genre |
Lesser Slave lake Slave Lake |
genre_facet |
Lesser Slave lake Slave Lake |
op_source |
Journal of the Fisheries Research Board of Canada volume 34, issue 7, page 954-961 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f77-148 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
34 |
container_issue |
7 |
container_start_page |
954 |
op_container_end_page |
961 |
_version_ |
1802646640426745856 |