ArticleThe Journal of experimental biology2023
The upper temperature and hypoxia limits of Atlantic salmon (Salmo salar) depend greatly on the method utilized.
Article in The Journal of experimental biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 19 citations in OpenAlex.
- Blood-Based Characterization of Hypoxia-Tolerant and Hypoxia-Susceptible Atlantic Salmon (Animals : an open access journal from MDPI · 2026Article
- Increased heart rate and blood oxygen extraction are key to the ability of schoolmaster snapper (Lutjanus apodus) to swim maximally at high temperatures.The Journal of experimental biology · 2026Article
- The relevance and application of measures of thermal tolerance to fish ecology, conservation and aquaculture.Conservation physiology · 2026Article
- Effects of acute cooling and bradycardia on central venous pressure and cardiac function in Nile tilapia (Oreochromis niloticus).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2025Article
- It's a good thing that severely hypoxic salmon (Salmo salar) have a limited capacity to increase heart rate when warmed.The Journal of experimental biology · 2025Article
- Atlantic salmon (Frontiers in physiology · 2025Article
- Near-maximally swimming schoolmaster snapper (Lutjanus apodus) have a greater metabolic capacity, and slightly lower thermal tolerance, than when tested at rest.The Journal of experimental biology · 2024Article
- Hyperoxia does not improve the acute upper thermal tolerance of a tropical marine fish (Lutjanus apodus).The Journal of experimental biology · 2024Article
- Heart Rate and Acceleration Dynamics during Swim-Fitness and Stress Challenge Tests in Yellowtail Kingfish (Biology · 2024Article
- Cardiorespiratory physiology and swimming capacity of Atlantic salmon (Salmo salar) at cold temperatures.The Journal of experimental biology · 2023Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
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Abstract
In this study, Atlantic salmon were: (i) implanted with heart rate (fH) data storage tags (DSTs), pharmacologically stimulated to maximum fH, and warmed at 10°C h-1 (i.e. tested using a 'rapid screening protocol'); (ii) fitted with Doppler® flow probes, recovered in respirometers and given a critical thermal maximum (CTmax) test at 2°C h-1; and (iii) implanted with fH DSTs, recovered in a tank with conspecifics for 4 weeks, and had their CTmax determined at 2°C h-1. Fish in respirometers and those free-swimming were also exposed to a stepwise decrease in water oxygen level (100% to 30% air saturation) to determine the oxygen level at which bradycardia occurred. Resting fH was much lower in free-swimming fish than in those in respirometers (∼49 versus 69 beats min-1) and this was reflected in their scope for fH (∼104 versus 71 beats min-1) and CTmax (27.7 versus 25.9°C). Further, the Arrhenius breakpoint temperature and temperature at peak fH for free-swimming fish were considerably greater than for those tested in the respirometers and given a rapid screening protocol (18.4, 18.1 and 14.6°C; and 26.5, 23.2 and 20.2°C, respectively). Finally, the oxygen level at which bradycardia occurred was significantly higher in free-swimming salmon than in those in respirometers (∼62% versus 53% air saturation). These results: highlight the limitations of some lab-based methods of determining fH parameters and thermal tolerance in fishes; and suggest that scope for fH may be a more reliable and predictive measure of a fish's upper thermal tolerance than their peak fH.
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