Evidence of unidirectional gene flow in a fragmented population of Salmo trutta L.

ABSTRACT: Selection, genetic drift, and gene flow affect genetic variation within populations and genetic differences among populations. Both drift and selection tend to decrease variation within populations and increase differences among populations, whereas gene flow increases variation within populations but leads to populations being related. In brown trout (Salmo trutta L.), the most important factor in population fragmentation is disrupted river-segment connectivity. The main goal of the study was to use genetic analysis to estimate the level of gene flow among resident and migratory brown trout in potential hybridization areas located downstream of impassable barriers in one river basin in the southern Baltic Sea region. First, spawning redds were counted in the upper river basin downstream o

SUBMITTER: Bernas R 

PROVIDER: S-EPMC8642411 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature