Genome-wide association study and genomic selection for growth-related traits in Eastern oyster (Crassostrea virginica).

ABSTRACT: Understanding the genetic architecture of economically important traits is essential for the design and implementation of efficient breeding programs. Here, we analysed 3,653 Eastern oysters (Crassostrea virginica) from 62 crossing groups and 307 full-sib families, all genotyped with a 200 K SNP array, to (i) estimate heritability and genetic correlations for six growth-related traits, (ii) detect quantitative trait loci (QTL) and candidate genes, and (iii) compare the accuracy of pedigree- (PBLUP) versus genomic-based (GBLUP) predictions across marker densities, selection strategies (physical distance (PD) versus linkage disequilibrium (LD) and phenotype-based genotyping strategies. SNP-based Heritabilities ranged from 0.33 to 0.56, and genetic correlations among traits exceeded 0.61, ind

SUBMITTER: Marin-Nahuelpi R 

PROVIDER: S-EPMC12542368 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature