Implications of fisheries-induced evolution for stock rebuilding and recovery

Fishing-induced evolution has the potential to change life-history and other characters of exploited stocks. Here we study the rebuilding and recovery of an exploited stock with en individual-based eco-genetic model parameterized for Atlantic cod. The short term (<20 years) rebuilding of stock bi...

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Bibliographic Details
Main Authors: Enberg, Katja, Jørgensen, Christian, Dunlop, Erin S., Heino, Mikko, Dieckmann, Ulf
Format: Report
Language:English
Published: ICES 2010
Subjects:
fish stocks
fiskebestander
growth
vekst
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921
atlantic cod
Online Access:http://hdl.handle.net/11250/102584
Description
Summary:Fishing-induced evolution has the potential to change life-history and other characters of exploited stocks. Here we study the rebuilding and recovery of an exploited stock with en individual-based eco-genetic model parameterized for Atlantic cod. The short term (<20 years) rebuilding of stock biomass was only little affected by fishing-induced evolution. However, the evolving stock recovered to a new demographic equilibrium below the pre-harvest levels, and recovery to pre-harvest levels took thousands of years. These results exemplify the need for proactive management of fishing-induced evolution, as restoration of genetic traits is slow, or may even be impractical.

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