Limited hatchery introgression into wild brook trout (Salvelinus fontinalis) populations despite reoccurring stocking.

ABSTRACT: Due to increased anthropogenic pressures on many fish populations, supplementing wild populations with captive-raised individuals has become an increasingly common management practice. Stocking programs can be controversial due to uncertainty about the long-term fitness effects of genetic introgression on wild populations. In particular, introgression between hatchery and wild individuals can cause declines in wild population fitness, resiliency, and adaptive potential and contribute to local population extirpation. However, low survival and fitness of captive-raised individuals can minimize the long-term genetic consequences of stocking in wild populations, and to date the prevalence of introgression in actively stocked ecosystems has not been rigorously evaluated. We quantified the exten

SUBMITTER: White SL 

PROVIDER: S-EPMC6183464 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature