While not directly about predator stress, this research provides valuable insights into the long-term effects of chronic stress on Atlantic salmon, including growth reduction and cardiac remodeling.
Category: Fish Health & Welfare
Predator induced stress may compromise farmed salmon immune function and well being.
Chronic stress boosts systemic inflammation and compromises antiviral innate immunity in Carassius gibel
While focusing on Carassius gibel, this study shows how chronic stress can compromise the immune system, making fish more susceptible to infections. This is relevant to overall fish health and potentially product quality.
Stress alters immune function and disease resistance in chinook salmon (Oncorhynchus tshawytscha)
This study on chinook salmon demonstrates how stress alters immune function and disease resistance. It’s important as it shows how stress can impair the immune response, making salmon more vulnerable to diseases.
Chronic stress negatively impacts wound healing, welfare, and stress regulation in internally tagged Atlantic salmon (Salmo salar)
This research on Atlantic salmon shows that chronic stress impairs wound healing, reduces welfare, and disrupts stress regulation mechanisms. It’s relevant as it demonstrates how ongoing stress can lead to prolonged inflammation and slower recovery from injuries.
Acute stress response on Atlantic salmon: a time-course study of the effects on plasma metabolites, mucus cortisol levels, and head kidney transcriptome profile
This time-course study on Atlantic salmon reveals how acute stress leads to significant changes in plasma metabolites, mucus cortisol levels, and gene expression in the head kidney. It’s relevant as it highlights how acute stress can disrupt metabolic processes and immune function.
Host-pathogen-environment interactions predict survival outcomes of adult sockeye salmon (Oncorhynchus nerka) released from fisheries
This research characterizes how independent and cumulative stressors, such as fisheries handling and high water temperatures, along with natural infections, affect the health and longevity of wild adult sockeye salmon. The study found that cumulative stressors significantly increased pathogen loads and mortality rates, demonstrating the compounded negative effects on salmon survival.
The Atlantic salmon’s stress- and immune-related transcriptional responses to moderate hypoxia, an incremental temperature increase, and these challenges combined
This study examines how moderate hypoxia and incremental temperature increases affect the stress and immune responses of Atlantic salmon. The combined stressors led to significant changes in the expression of stress-related and immune-related genes, indicating that multiple environmental stressors can overwhelm the salmon’s immune system and reduce their ability to cope with additional challenges.
Simulated maternal stress reduces offspring aerobic swimming performance in Pacific salmon
Maternal stress in Pacific salmon, simulated by cortisol exposure, reduces the aerobic swimming performance of offspring, potentially affecting their survival and fitness. This suggests that stress experienced by parents can have long-term negative effects on their offspring.
Cortisol-Related Signatures of Stress in the Fish Microbiome
This study demonstrates how stress, indicated by elevated cortisol levels, alters the fish gut microbiome. While not specifically about predation, it provides insights into how stress can impact fish health through changes in microbial communities.
Stress in Fishes: A Diversity of Responses with Particular Reference to Changes in Circulating Corticosteroids
Discusses stress in fish, including predation as a stressor. Offers insights into how predation fits into the broader context of fish stress.
