Economic repercussions of fisheries-induced evolution

10397 11 61537 3 169194 document 61537 Economic repercussions of fisheries-induced evolution.pdf application/pdf a7510f545c5f8627ef450128b6ae0c87 MD5 488755 2016-06-09 14:30:31 https://pure.iiasa.ac.at/id/eprint/10397/1/Economic%20repercussions%20of%20fisheries-induced%20evolution.pdf 10397 1 1 application/pdf text en public cc_by_nc

Economic repercussions of fisheries-induced evolution.pdf

published 61559 2 169229 document 61559 lightbox.jpg image/png 9dfff4b05d74e6414d4800804451f648 MD5 78435 2016-06-09 14:40:32 https://pure.iiasa.ac.at/id/eprint/10397/2/lightbox.jpg 10397 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/61537 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/61537 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/61537 archive 351 disk0/00/01/03/97 2016-01-15 08:48:45 2021-08-27 17:23:15 2016-01-15 08:48:45 article show 1 Eikeset A.M. 8168 Richter A. Dunlop E.S. 8093 Dieckmann U. 1668 0000-0001-7089-0393 Stenseth N.C. Economic repercussions of fisheries-induced evolution pub iis_ecl prog_eep Atlantic cod; Genetic adaptations; Harvest control rule; Marine governance; Adaptive management 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. 2013-07 published National Academy of Sciences 10.1073/pnas.1212593110 XJ-13-150 PNAS; 110(30):12259-12264 (23 July 2013) (Published online 8 July 2013) [doi:10.1073/pnas.1212593110] 1230 1224 66 public Proceedings of the National Academy of Sciences 110 30 12259-12264 TRUE 1091-6490 FALSE info:eu-repo/semantics/article