Intraspecific variability in thermal tolerance: a case study with coastal cutthroat trout.

ABSTRACT: Fish physiological performance is directly regulated by their thermal environment. Intraspecific comparisons are essential to ascertain the vulnerability of fish populations to climate change and to identify which populations may be more susceptible to extirpation and which may be more resilient to continued warming. In this study, we sought to evaluate how thermal performance varies in coastal cutthroat trout (Oncorhynchus clarki clarki) across four distinct watersheds in OR, USA. Specifically, we measured oxygen consumption rates in trout from the four watersheds with variable hydrologic and thermal regimes, comparing three ecologically relevant temperature treatments (ambient, annual maximum and novel warm). Coastal cutthroat trout displayed considerable intraspecific variability

SUBMITTER: Anlauf-Dunn K 

PROVIDER: S-EPMC9178963 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature