Local variation in stress response of juvenile anadromous brown trout, Salmo trutta.

ABSTRACT: Habitat fragmentation may cut off anadromous salmonids from parts of their potential native habitat and separate previously connected populations. Understanding the consequences of this is vital for fish management and prioritization of restoration activities. Here, we show that there is a significant difference in the body morphology, physiological stress response, and aspects contributing to aerobic capacity between juvenile anadromous brown trout, Salmo trutta, collected at a downstream site and an upstream site, separated by 2 km and several challenging stream sections, in a small unfragmented stream system in western Sweden. Following a standardized stress test, there were significant differences between fish from the upstream and downstream sites (plasma cortisol concentration

SUBMITTER: Berry M 

PROVIDER: S-EPMC11199126 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature