The effect of temperature on appetite in fish

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dc.contributor.affiliationNorwegian University of Science and Technology - Jutfelt, Fredrik
dc.contributor.affiliationTechnical University of Denmark - Norin, Tommy
dc.contributor.affiliationUniversity of Helsinki - Åsheim, Eirik
dc.contributor.affiliationUniversity of New Brunswick - Rowsey, Lauren
dc.contributor.affiliationNorwegian University of Science and Technology - Andreassen, Anna
dc.contributor.affiliationNorwegian University of Science and Technology - Morgan, Rachael
dc.contributor.affiliationDeakin University - Clark, Timothy
dc.contributor.affiliationUniversity of New Brunswick - Speers-Roesch, Ben
dc.contributor.authorJutfelt, Fredrik
dc.contributor.authorNorin, Tommy
dc.contributor.authorÅsheim, Eirik
dc.contributor.authorRowsey, Lauren
dc.contributor.authorAndreassen, Anna
dc.contributor.authorMorgan, Rachael
dc.contributor.authorClark, Timothy
dc.contributor.authorSpeers-Roesch, Ben
dc.date.accessioned2025-03-24T15:21:19Z
dc.date.issued2021-04-27
dc.date.issued2021-04-27
dc.descriptionTemperature has a dramatic effect on the physiology of ectothermic animals, impacting most of their biology. When temperatures increase above optimal for an animal, their growth gradually decreases. The main mechanism behind this growth rate reduction is unknown.  Here, we suggest the 'aerobic scope protection' hypothesis as a mechanistic explanation for the reduction in growth.  After a meal, metabolic rate, and hence oxygen consumption rate, transiently increases in a process called specific dynamic action (SDA). At warmer temperatures, the SDA response usually becomes temporally compressed, leading to a higher peak oxygen consumption rate. This peak in oxygen consumption rate risks taking up much of the animal's aerobic scope (the difference between resting and maximum rates of oxygen consumption), which would leave little residual aerobic scope for other aerobic functions.  We propose that water-breathing ectothermic animals will protect their postprandial residual aerobic scope by reducing meal sizes in order to regulate the peak SDA response during times of warming, leading to reductions in growth. This hypothesis is consistent with the published literature on fishes, and we suggest predictions to test it.
dc.identifierhttps://doi.org/10.5061/dryad.866t1g1qm
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/10844
dc.rightsOpen
dc.rights.licensecc-zero
dc.titleThe effect of temperature on appetite in fish
dc.typedataset
dc.typedataset

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