Parallel epigenetic modifications induced by hatchery rearing in a Pacific salmon.

ABSTRACT: Wild stocks of Pacific salmonids have experienced sharp declines in abundance over the past century. Consequently, billions of fish are released each year for enhancing abundance and sustaining fisheries. However, the beneficial role of this widely used management practice is highly debated since fitness decrease of hatchery-origin fish in the wild has been documented. Artificial selection in hatcheries has often been invoked as the most likely explanation for reduced fitness, and most studies to date have focused on finding signatures of hatchery-induced selection at the DNA level. We tested an alternative hypothesis, that captive rearing induces epigenetic reprogramming, by comparing genome-wide patterns of methylation and variation at the DNA level in hatchery-reared coho salmon (Onc

SUBMITTER: Le Luyer J 

PROVIDER: S-EPMC5724268 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature