RT Journal Article
SR Electronic
T1 Effect of elevated embryonic incubation temperature on the temperature preference of juvenile lake (<em>Coregonus clupeaformis</em>) and round whitefish (<em>Prosopium cylindraceum</em>)
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2023.03.13.532459
DO 10.1101/2023.03.13.532459
A1 Adam A. Harman
A1 Hannah Mahoney
A1 William Andrew Thompson
A1 Meghan L.M. Fuzzen
A1 Bhuvan Aggarwhal
A1 Lisa Laframboise
A1 Douglas R. Boreham
A1 Richard G. Manzon
A1 Christopher M. Somers
A1 Joanna Y. Wilson
YR 2023
UL http://biorxiv.org/content/early/2023/03/14/2023.03.13.532459.abstract
AB Anthropogenic impacts can lead to increased temperatures in freshwater environments through thermal effluent and climate change. Thermal preference of aquatic organisms can be modulated by abiotic and biotic factors including environmental temperature. Whether increased temperature during embryogenesis can lead to long-term alterations in thermal preference has not been explicitly tested in native freshwater species. Lake (Coregonus clupeaformis) and round (Prosopium cylindraceum) whitefish were incubated at natural and elevated temperatures until hatching, following which, all groups were moved to common garden conditions (15°C) during the post-hatching stage. Temperature preference was determined at 8 (Lake whitefish only) and 12-months of age (both species), using a shuttlebox system. Round whitefish preferred a cooler temperature when incubated at 2°C and 6°C compared to 0.5°C. Lake whitefish had similar temperature preferences regardless of age, weight, and incubation temperature. These results reveal that temperature preference in freshwater fish can be programmed during early development, and that round whitefish may be more sensitive to incubation temperature. This study highlights the effects that small increases in temperature caused by anthropogenic impacts may have on cold-adapted freshwater fish.Competing Interest StatementD.R. Boreham received funding from Bruce Power and held a position of Bruce Power Chair in Radiation and Health at the Northern Ontario School of MedicineLWFLake Whitefish (Coregonus clupeaformis)RWFRound Whitefish (Prosopium cylindraceum)TprefTemperature Preference°CDegrees in CelsiusmLMilliliterminMinutemmMillimeterggram