Environmental stress linked to consumption of maternally derived carotenoids in brown trout embryos (Salmo trutta).

ABSTRACT: The yellow, orange, or red colors of salmonid eggs are due to maternally derived carotenoids whose functions are not sufficiently understood yet. Here, we studied the significance of naturally acquired carotenoids as maternal environmental effects during embryo development in brown trout (Salmo trutta). We collected eggs from wild females, quantified their egg carotenoid content, fertilized them in vitro in full-factorial breeding blocks to separate maternal from paternal effects, and raised 3,278 embryos singly at various stress conditions until hatching. We found significant sire effects that revealed additive genetic variance for embryo survival and hatching time. Dam effects were 5.4 times larger than these sire effects, indicating that maternal environmental effects play an imp

SUBMITTER: Wilkins LGE 

PROVIDER: S-EPMC5528241 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature