6533b858fe1ef96bd12b6d35
RESEARCH PRODUCT
Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic
Michael MatschinerMichael MatschinerSissel JentoftPaul BentzenBastiaan StarJulia Maria Isis BarthJulia Maria Isis BarthCecilia HelmersonCorey J. MorrisNils Chr. StensethNils Chr. StensethIan BradburyMarine S. O. BrieucAnne Maria EikesetHelle Tessand BaalsrudKjetill S. JakobsenAgata T. Gondek-wyrozemskaJane Aanestad GodiksenOlav Sigurd KjesbuMalin L. Pinskysubject
0106 biological sciences0301 basic medicinepopulation genomicsFishing430010603 evolutionary biology01 natural sciencesGenomeGenomic InstabilityPopulation genomicsEvolution Molecular03 medical and health sciencesselective sweepsEffective population sizeGadusAnimalsBiomassAtlantic OceanGenetic diversityMultidisciplinaryPolymorphism GeneticbiologyPopulation Biologyfisheries-induced evolutiongenetic diversityBiological Sciencesbiology.organism_classification030104 developmental biologyArcticGadus morhuaEvolutionary biologysense organsAtlantic codhistorical DNAdescription
Significance Both theory and experiments suggest that fishing can drive the evolution of an earlier maturation age. However, determining whether changes in the wild are the result of fisheries-induced evolution has been difficult. Temporal, genome-wide datasets can directly reveal responses to selection. Here, we investigate the genomes of two wild Atlantic cod populations from samples that pre- and postdate periods of intensive fishing. Although phenotypic changes suggest fisheries-induced evolution, we do not find evidence for any strong genomic change or loss of genetic diversity. While evolution could have occurred through undetectable frequency changes at many loci, the irreversible loss of late-maturing genotypes appears unlikely. Instead, we suggest that recovery of former phenotypes is possible with reduced fishing pressure.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-01 |