Economic repercussions of fisheries-induced evolution
Fish stocks experiencing high fishing mortality show a tendency to mature earlier and at a smaller size, which may have a genetic component and therefore long-lasting economic and biological effects. To date, the economic effects of such ecoevolutionary dynamics have not been empirically investigate...
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Online Access: | http://hdl.handle.net/11250/109189 https://doi.org/10.1073/pnas.1212593110 |
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ftimr:oai:imr.brage.unit.no:11250/109189 2024-09-15T17:52:28+00:00 Economic repercussions of fisheries-induced evolution Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Christian 2013-07-23 application/pdf http://hdl.handle.net/11250/109189 https://doi.org/10.1073/pnas.1212593110 eng eng The National Academy of Sciences Anne Maria Eikeset, Andries Richter, Erin S. Dunlop, Ulf Dieckmann, and Nils Chr. Stenseth Economic repercussions of fisheries-induced evolution PNAS 2013 110: 12259-12264. http://hdl.handle.net/11250/109189 https://doi.org/10.1073/pnas.1212593110 12259-12264 110 Proceedings of the National Academy of Sciences of the United States of America 30 atlantic cod atlantisk torsk genetics genetikk management advice forvaltningsråd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Journal article Peer reviewed 2013 ftimr https://doi.org/10.1073/pnas.1212593110 2024-06-25T14:17:18Z Fish stocks experiencing high fishing mortality show a tendency to mature earlier and at a smaller size, which may have a genetic component and therefore long-lasting economic and biological effects. To date, the economic effects of such ecoevolutionary dynamics have not been empirically investigated. Using 70 y of data, we develop a bioeconomic model for Northeast Arctic cod to compare the economic yield in a model in which life-history traits can vary only through phenotypic plasticity with a model in which, in addition, genetic changes can occur. We find that evolutionary changes toward faster growth and earlier maturation occur consistently even if a stock is optimally managed. However, if a stock is managed optimally, the evolutionary changes actually increase economic yield because faster growth and earlier maturation raise the stock’s productivity. The optimal fishing mortality is almost identical for the evolutionary and nonevolutionary model and substantially lower than what it has been historically. Therefore, the costs of ignoring evolution under optimal management regimes are negligible. However, if fishing mortality is as high as it has been historically, evolutionary changes may result in economic losses, but only if the fishery is selecting for medium-sized individuals. Because evolution facilitates growth, the fish are younger and still immature when they are susceptible to getting caught, which outweighs the increase in productivity due to fish spawning at an earlier age. Article in Journal/Newspaper Arctic cod atlantic cod Northeast Arctic cod Institute for Marine Research: Brage IMR Proceedings of the National Academy of Sciences 110 30 12259 12264 |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
topic |
atlantic cod atlantisk torsk genetics genetikk management advice forvaltningsråd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
spellingShingle |
atlantic cod atlantisk torsk genetics genetikk management advice forvaltningsråd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Christian Economic repercussions of fisheries-induced evolution |
topic_facet |
atlantic cod atlantisk torsk genetics genetikk management advice forvaltningsråd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
description |
Fish stocks experiencing high fishing mortality show a tendency to mature earlier and at a smaller size, which may have a genetic component and therefore long-lasting economic and biological effects. To date, the economic effects of such ecoevolutionary dynamics have not been empirically investigated. Using 70 y of data, we develop a bioeconomic model for Northeast Arctic cod to compare the economic yield in a model in which life-history traits can vary only through phenotypic plasticity with a model in which, in addition, genetic changes can occur. We find that evolutionary changes toward faster growth and earlier maturation occur consistently even if a stock is optimally managed. However, if a stock is managed optimally, the evolutionary changes actually increase economic yield because faster growth and earlier maturation raise the stock’s productivity. The optimal fishing mortality is almost identical for the evolutionary and nonevolutionary model and substantially lower than what it has been historically. Therefore, the costs of ignoring evolution under optimal management regimes are negligible. However, if fishing mortality is as high as it has been historically, evolutionary changes may result in economic losses, but only if the fishery is selecting for medium-sized individuals. Because evolution facilitates growth, the fish are younger and still immature when they are susceptible to getting caught, which outweighs the increase in productivity due to fish spawning at an earlier age. |
format |
Article in Journal/Newspaper |
author |
Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Christian |
author_facet |
Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Christian |
author_sort |
Eikeset, Anne Maria |
title |
Economic repercussions of fisheries-induced evolution |
title_short |
Economic repercussions of fisheries-induced evolution |
title_full |
Economic repercussions of fisheries-induced evolution |
title_fullStr |
Economic repercussions of fisheries-induced evolution |
title_full_unstemmed |
Economic repercussions of fisheries-induced evolution |
title_sort |
economic repercussions of fisheries-induced evolution |
publisher |
The National Academy of Sciences |
publishDate |
2013 |
url |
http://hdl.handle.net/11250/109189 https://doi.org/10.1073/pnas.1212593110 |
genre |
Arctic cod atlantic cod Northeast Arctic cod |
genre_facet |
Arctic cod atlantic cod Northeast Arctic cod |
op_source |
12259-12264 110 Proceedings of the National Academy of Sciences of the United States of America 30 |
op_relation |
Anne Maria Eikeset, Andries Richter, Erin S. Dunlop, Ulf Dieckmann, and Nils Chr. Stenseth Economic repercussions of fisheries-induced evolution PNAS 2013 110: 12259-12264. http://hdl.handle.net/11250/109189 https://doi.org/10.1073/pnas.1212593110 |
op_doi |
https://doi.org/10.1073/pnas.1212593110 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
110 |
container_issue |
30 |
container_start_page |
12259 |
op_container_end_page |
12264 |
_version_ |
1810294493272866816 |