Genomewide association analyses of fitness traits in captive-reared Chinook salmon: Applications in evaluating conservation strategies.

ABSTRACT: A novel application of genomewide association analyses is to use trait-associated loci to monitor the effects of conservation strategies on potentially adaptive genetic variation. Comparisons of fitness between captive- and wild-origin individuals, for example, do not reveal how captive rearing affects genetic variation underlying fitness traits or which traits are most susceptible to domestication selection. Here, we used data collected across four generations to identify loci associated with six traits in adult Chinook salmon (Oncorhynchus tshawytscha) and then determined how two alternative management approaches for captive rearing affected variation at these loci. Loci associated with date of return to freshwater spawning grounds (return timing), length and weight at return, age

SUBMITTER: Waters CD 

PROVIDER: S-EPMC5999212 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature