Genomic basis for early-life mortality in sharpsnout seabream.

ABSTRACT: Mortality at early life stages of fishes is common in nature and can be shaped by stochastic and selective processes. Selective mortality has rarely been assessed in natural conditions but can now be studied by combining genomic data with information on different life stages that realates to fitness. Here we investigate selective mortality between settlers and six-month survivors of the sharpsnout seabream by genotype-phenotype/environmental association studies in three localities along a geographic gradient. We gathered information on 105 individuals at 85,031 SNPs, obtained from individual based 2b-RAD libraries, as well as 9 phenotypic and environmental variables derived from individual otolith readings. We found common signals across localities for potential selection, such as lower su

SUBMITTER: Torrado H 

PROVIDER: S-EPMC9568528 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature