Physiological stress response to hydropeaking in rainbow trout (Oncorhynchus mykiss).

ABSTRACT: In recent years, there has been growing interest in investigating hydropeaking's impact on rivers. In the case of fish, literature documents stranding, loss of spawning beds, and behavioural changes, while the physiological stress response is less understood. In this study, a natural flow scenario and five hydropeaking scenarios were simulated in a fluvial mesocosm named Greenchannel. Scenarios were characterised through hydraulic/hydrological (water velocity and level, water level fall rate, and frequency and number of inundations) and water quality (temperature, dissolved oxygen levels, turbidity) variables. Different test groups of 15 rainbow trout (Oncorhynchus mykiss) (n = 90) were subjected to these scenarios for 24 h each. Cortisol, creatine phosphokinase (CPK), lactate dehydrogenas

SUBMITTER: Hernandez-Marchena R 

PROVIDER: S-EPMC12811275 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature