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dc.contributor.authorEikeset, Anne Maria
dc.contributor.authorRichter, Andries
dc.contributor.authorDunlop, Erin S.
dc.contributor.authorDieckmann, Ulf
dc.contributor.authorStenseth, Nils Christian
dc.date.accessioned2013-10-23T12:15:11Z
dc.date.available2013-10-23T12:15:11Z
dc.date.issued2013-07-23
dc.identifier.citationAnne Maria Eikeset, Andries Richter, Erin S. Dunlop, Ulf Dieckmann, and Nils Chr. Stenseth Economic repercussions of fisheries-induced evolution PNAS 2013 110: 12259-12264.no_NO
dc.identifier.urihttp://hdl.handle.net/11250/109189
dc.description.abstractFish 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.no_NO
dc.language.isoengno_NO
dc.publisherNational Academy of Sciencesno_NO
dc.subjectatlantic codno_NO
dc.subjectatlantisk torskno_NO
dc.subjectgeneticsno_NO
dc.subjectgenetikkno_NO
dc.subjectmanagement adviceno_NO
dc.subjectforvaltningsrådno_NO
dc.titleEconomic repercussions of fisheries-induced evolutionno_NO
dc.typeJournal articleno_NO
dc.typePeer reviewedno_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922no_NO
dc.source.pagenumber12259-12264no_NO
dc.source.volume110no_NO
dc.source.journalProceedings of the National Academy of Sciencesno_NO
dc.source.issue30no_NO
dc.identifier.doi10.1073/pnas.1212593110


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