Acute and chronic heat stress in gill and brain tissue of two stocked brook trout strains

ABSTRACT: Warming stream temperatures are a threat to coldwater dependent-species like the brook trout (Salvelinus fontinalis). Understanding the molecular heat stress response of brook trout has important implications for conservation efforts. Expression patterns of certain genes (e.g. heat shock proteins) can be used as biomarkers to monitor heat exposure and fish health in wild populations. Differences in the molecular heat stress response among different strains may also indicate differences in resiliency to heat, either due to adaptive genetic diversity or plasticity, and could influence fisheries' managers stocking decisions. The goals of this study were (1) to identify potential biomarkers not just of general heat stress, but biomarkers that could be used to distinguish between the initial short-term heat stress response and chronic heat stress, and (2) quantify differences in the molecular heat stress response between the long-time hatchery and heritage strains and identify possible behavioral and metabolic phenotypes that would affect the resiliency of each strain to heat stress.

ORGANISM(S): Salvelinus fontinalis

PROVIDER: GSE303769 | GEO | 2026/10/01

REPOSITORIES: GEO