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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ftpubmed:oai:pubmedcentral.nih.gov:3725113 2023-05-15T14:30:29+02:00 Economic repercussions of fisheries-induced evolution Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Chr. 2013-07-23 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3725113 http://www.ncbi.nlm.nih.gov/pubmed/23836660 https://doi.org/10.1073/pnas.1212593110 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3725113 http://www.ncbi.nlm.nih.gov/pubmed/23836660 http://dx.doi.org/10.1073/pnas.1212593110 Freely available online through the PNAS open access option. Social Sciences Text 2013 ftpubmed https://doi.org/10.1073/pnas.1212593110 2013-09-05T03:03:16Z 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. Text Arctic cod Arctic Northeast Arctic cod PubMed Central (PMC) Arctic Proceedings of the National Academy of Sciences 110 30 12259 12264 |
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Social Sciences Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Chr. Economic repercussions of fisheries-induced evolution |
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Social Sciences |
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 |
Text |
author |
Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Chr. |
author_facet |
Eikeset, Anne Maria Richter, Andries Dunlop, Erin S. Dieckmann, Ulf Stenseth, Nils Chr. |
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 |
National Academy of Sciences |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3725113 http://www.ncbi.nlm.nih.gov/pubmed/23836660 https://doi.org/10.1073/pnas.1212593110 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Northeast Arctic cod |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3725113 http://www.ncbi.nlm.nih.gov/pubmed/23836660 http://dx.doi.org/10.1073/pnas.1212593110 |
op_rights |
Freely available online through the PNAS open access option. |
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 |
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12264 |
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1766304326477676544 |