Impairing cardiac oxygen supply in swimming coho salmon compromises their heart function and tolerance to acute warming

• Published in: Scientific reports Vol. 13; no. 1; pp. 21204 - 16
• Main Authors: Ekström, Andreas, Hendriks, Brian, Van Wert, Jacey C., Gilbert, Matthew J. H., Farrell, Anthony P., Cooke, Steven J., Patterson, David A., Hinch, Scott G., Eliason, Erika J.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.12.2023; Nature Publishing Group; Nature Portfolio
• Subjects: 631/158/2455; 631/443/1338; 631/443/1784; 631/443/319; 631/443/592; 631/601; Animals; Climate change; Coronary artery; Female; Fish migration; Global warming; Heart; High temperature; Humanities and Social Sciences; Hypotheses; Male; Mortality; multidisciplinary; Oncorhynchus kisutch; Oxygen; Oxygen Consumption; Oxygen demand; Rivers; Salmon; Science; Science (multidisciplinary); Spawning; Spawning migrations; Swimming; Temperature; Temperature tolerance; Thermal stress; Zoologi; Zoology

Climatic warming elevates mortality for many salmonid populations during their physically challenging up-river spawning migrations, yet, the mechanisms underlying the increased mortality remain elusive. One hypothesis posits that a cardiac oxygen insufficiency impairs the heart’s capacity to pump su...