Identifying mechanisms underlying individual body size increases in a changing, highly seasonal environment: The growing trout of West brook

As air temperature increases, it has been suggested that smaller individual body size may be a general response to climate warming. However, for ectotherms inhabiting cold, highly seasonal environments, warming temperatures may increase the scope for growth and result in larger body size. In a long‐...

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Bibliographic Details
Published in:The Journal of animal ecology 2023-01, Vol.92 (1), p.78-96
Main Authors: Letcher, Benjamin H., Nislow, Keith H., O'Donnell, Matthew J., Whiteley, Andrew R., Coombs, Jason A., Dubreuil, Todd L., Turek, Daniel B.
Format: Article
Language:English
Subjects:
Air temperature
Animals
Annual variations
Atlantic salmon
Autumn
Body Size
brook trout
brown trout
Climate
Climate change
Environmental factors
Fish
Global warming
Growth rate
Juveniles
Population density
Rivers
Salmo trutta
Salmon
Salvelinus fontinalis
Seasons
Spring
Spring (season)
Stream discharge
stream ecology
Stream flow
stream temperature
Trout
Trout - physiology
Variation
Water temperature
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Summary:As air temperature increases, it has been suggested that smaller individual body size may be a general response to climate warming. However, for ectotherms inhabiting cold, highly seasonal environments, warming temperatures may increase the scope for growth and result in larger body size. In a long‐term study of individual brook trout Salvelinus fontinalis and brown trout Salmo trutta inhabiting a small stream network, individual lengths increased over the course of 15 years. As size‐selective gains and losses to the population acted to reduce body sizes and mean body size at first tagging in the autumn (
ISSN:0021-8790
1365-2656
DOI:10.1111/1365-2656.13833