Social status affects lipid metabolism in rainbow trout, Oncorhynchus mykiss.

ABSTRACT: Juvenile rainbow trout ( Oncorhynchus mykiss) confined in pairs form social hierarchies in which socially subordinate fish display characteristic traits, including reduced growth rates and altered glucose metabolism. These effects are, in part, mediated by chronically elevated cortisol levels and/or reduced feeding. To determine the effects of social status on lipid metabolism, trout were held in pairs for 4 days, following which organismal and liver-specific indexes of lipid metabolism were measured. At the organismal level, circulating triglycerides were elevated in dominant trout, whereas subordinate trout exhibited elevated concentrations of circulating free fatty acids (FFAs) and lowered plasma total cholesterol levels. At the molecular level, increased expression of lipogenic genes i

SUBMITTER: Kostyniuk DJ 

PROVIDER: S-EPMC6139616 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature