Chronic social stress alters protein metabolism in juvenile rainbow trout, Oncorhynchus mykiss.

ABSTRACT: When confined in pairs, juvenile rainbow trout (Oncorhynchus mykiss) form dominance hierarchies in which subordinate fish exhibit characteristic physiological changes including reduced growth rates and chronically elevated plasma cortisol concentrations. We hypothesized that alterations in protein metabolism contribute to the reduced growth rate of socially stressed trout, and predicted that subordinate trout would exhibit reduced rates of protein synthesis coupled with increases in protein degradation. Protein metabolism was assessed in dominant and subordinate fish after 4 days of social interaction, and in fish that were separated after 4 days of interaction for a 4 days recovery period, to determine whether effects on protein metabolism recovered when social stress was alleviated. Prot

SUBMITTER: Saulnier RJ 

PROVIDER: S-EPMC8043953 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature