Shaun Killen
@shaunkillen.bsky.social
Prof of Ecophysiology at Uni of Glasgow. Metabolic physiology, pred/prey interactions, social behaviour, fisheries-induced evolution. 🇨🇦 in 🏴
Sorry, here is the working link!: besjournals.onlinelibrary.wiley.com/doi/10.1002/...
Simulated catch and release angling of Atlantic salmon before spawning alters activity, exploratory behaviour and aggression of offspring
C&R of wild Atlantic salmon can lead to offspring that are less active and exploratory in novel environments, but more aggressive. These intergenerational effects were strongest when air exposure was....
besjournals.onlinelibrary.wiley.com
February 9, 2026 at 10:47 AM
Sorry, here is the working link!: besjournals.onlinelibrary.wiley.com/doi/10.1002/...
Thank you! Not sure why I'm having so much trouble with links lately!
February 9, 2026 at 10:47 AM
Thank you! Not sure why I'm having so much trouble with links lately!
Apologies, the link above doesn't work. Use this one for the paper! onlinelibrary.wiley.com/doi/10.1111/...
Fatal Attraction: Light Pollution Creates an Ecological Trap for Wild Fish
This graphical abstract provides a snapshot of the ecological trap created by artificial light. At night, larval fish are attracted to illuminated habitats and settle there, but subsequently experien...
onlinelibrary.wiley.com
January 26, 2026 at 9:24 AM
Apologies, the link above doesn't work. Use this one for the paper! onlinelibrary.wiley.com/doi/10.1111/...
Finally moving beyond the fiction of a constant metabolic baseline will give us a more realistic foundation for bioenergetics, ecology, and evolution! (9/9)
January 23, 2026 at 5:33 PM
Finally moving beyond the fiction of a constant metabolic baseline will give us a more realistic foundation for bioenergetics, ecology, and evolution! (9/9)
We are not saying SMR is useless. We are saying it should be treated as state-dependent, or explicitly time-integrated across the sleep–wake cycle, depending on the biological question. (8/9)
January 23, 2026 at 5:33 PM
We are not saying SMR is useless. We are saying it should be treated as state-dependent, or explicitly time-integrated across the sleep–wake cycle, depending on the biological question. (8/9)
These effects may have implications for repeatability, heritability, metabolic scaling, behaviour–metabolism links, thermal performance curves, and even “calming effects” of conspecifics. Sleep architecture is a hidden axis in ALL of these. (7/9)
January 23, 2026 at 5:33 PM
These effects may have implications for repeatability, heritability, metabolic scaling, behaviour–metabolism links, thermal performance curves, and even “calming effects” of conspecifics. Sleep architecture is a hidden axis in ALL of these. (7/9)
Derived traits are affected too. Because aerobic scope = MMR − SMR, state-biased SMR estimates can inflate or shrink apparent performance capacity, even if maximum performance is unchanged. (6/9)
January 23, 2026 at 5:33 PM
Derived traits are affected too. Because aerobic scope = MMR − SMR, state-biased SMR estimates can inflate or shrink apparent performance capacity, even if maximum performance is unchanged. (6/9)
Environmental or treatment effects can also be missed entirely. If a factor affects a sleep-dominant process and SMR is measured during wake (or vice versa), any metabolic change may never be detected. (5/9)
January 23, 2026 at 5:33 PM
Environmental or treatment effects can also be missed entirely. If a factor affects a sleep-dominant process and SMR is measured during wake (or vice versa), any metabolic change may never be detected. (5/9)
This creates systematic measurement bias. SMR measured only during sleep underestimates daily maintenance costs; SMR measured only during wake overestimates them. The size and direction of the bias depend on sleep duration and sleep architecture. (4/9)
January 23, 2026 at 5:33 PM
This creates systematic measurement bias. SMR measured only during sleep underestimates daily maintenance costs; SMR measured only during wake overestimates them. The size and direction of the bias depend on sleep duration and sleep architecture. (4/9)
Wake, NREM sleep, and REM sleep each prioritise different physiological processes, with distinct energetic demands. How maintenance is defined and what constitutes SMR depends entirely on WHEN you measure it. (3/9)
January 23, 2026 at 5:33 PM
Wake, NREM sleep, and REM sleep each prioritise different physiological processes, with distinct energetic demands. How maintenance is defined and what constitutes SMR depends entirely on WHEN you measure it. (3/9)
Basal and standard metabolic rate are treated as fixed traits: the minimum cost of staying alive. But many core maintenance processes are not continuously active. Instead, they are temporally partitioned across wakefulness and different sleep states. (2/9)
January 23, 2026 at 5:33 PM
Basal and standard metabolic rate are treated as fixed traits: the minimum cost of staying alive. But many core maintenance processes are not continuously active. Instead, they are temporally partitioned across wakefulness and different sleep states. (2/9)