Temporal and region-specific variations in genome-wide inbreeding effects on female size and reproduction traits of rainbow trout.

ABSTRACT: Recent studies have shown that current levels of inbreeding, estimated by runs of homozygosity (ROH), are moderate to high in farmed rainbow trout lines. Based on ROH metrics, the aims of our study were to (i) quantify inbreeding effects on female size (postspawning body weight, fork length) and reproduction traits (spawning date, coelomic fluid weight, spawn weight, egg number, average egg weight) in rainbow trout, and (ii) identify both the genomic regions and inbreeding events affecting performance. We analysed the performance of 1346 females under linear animal models including random additive and dominance genetics effects, with fixed covariates accounting for inbreeding effects at different temporal and genomic scales. A significant effect of genome-wide inbreeding (F) was onl

SUBMITTER: Paul K 

PROVIDER: S-EPMC9046919 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature