Directly compares wild and domesticated salmon responses to predator presence, showing physiological stress responses (increased heart rates) and behavioral changes.
Category: Predator Induced Stress
Cortisol stress response of juvenile winter flounder (Pseudopleuronectes americanus, Walbaum) to predators
Demonstrates a clear cortisol stress response in juvenile winter flounder exposed to predators, even with visual cues alone.
Cumulative acute physiological stress in Atlantic salmon smolts: the effect of osmotic imbalance and the presence of predators
Shows cumulative effects of multiple stressors, including predator presence, on salmon smolts.
Size-dependent stress response in juvenile Arctic charr (Salvelinus alpinus) under prolonged predator conditioning
Directly studied predator-induced stress in Arctic charr, showing size-dependent stress responses. This study is highly relevant as it demonstrates how predator presence affects cortisol levels, a key indicator of stress in fish.
Are farmed salmon more prone to risk than wild salmon? Susceptibility of juvenile farm, hybrid and wild Atlantic salmon Salmo salar L. to an artificial predator
Compared risk-taking behavior and predator susceptibility in farm-raised, hybrid, and wild salmon. This study is relevant as it shows how domestication affects anti-predator responses, which could influence stress levels and health.
Combined effects of predator odor and alarm substance on behavioral and physiological responses of the pearl cichlid
This study directly demonstrates that predator odor and alarm substance significantly impact behavioral and physiological stress responses in fish, including elevated cortisol levels and gene expression changes.
Aquaculture risk management and marine mammal interactions in the Pacific Northwest
This research highlights the direct impact of marine mammal predators on salmon farms, causing both predation and stress-induced mortality, which affects product quality and economic outcomes.
A review of marine stressors impacting Atlantic salmon Salmo salar, with an assessment of the major threats to English stocks
This review identifies predation as one of the biggest threats to Atlantic salmon. While it doesn’t provide direct experimental evidence, it supports the importance of predation as a significant stressor for salmon populations.
The Combined Effects of Predation, Fishing, and Ocean Productivity on Salmon Species Targeted by Marine Mammals in the Northeast Pacific
Examines the combined effects of predation and other factors on salmon populations. Highlights the ecological importance of predation stress on fish populations.
Modelling the impacts of removing seal predation from Atlantic salmon, Salmo salar, rivers in Scotland: a tool for targeting conflict resolution
Models the impacts of removing seal predation on salmon populations. Indirectly supports the idea that predator presence affects fish populations, which could be linked to stress.
