Effect of elevated embryonic incubation temperature on the temperature preference of juvenile lake ( Coregonus clupeaformis ) and round whitefish ( Prosopium cylindraceum ).

Autor:	Harman A; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada., Mahoney H; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada., Thompson WA; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada., Fuzzen MLM; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada., Aggarwal B; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada., Laframboise L; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada., Boreham DR; Medical Sciences, Northern Ontario School of Medicine, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada., Manzon RG; Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan S4S 0A2, Canada., Somers CM; Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan S4S 0A2, Canada., Wilson JY; Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada.
Jazyk:	angličtina
Zdroj:	Conservation physiology [Conserv Physiol] 2023 Aug 30; Vol. 11 (1), pp. coad067. Date of Electronic Publication: 2023 Aug 30 (Print Publication: 2023).
DOI:	10.1093/conphys/coad067
Abstrakt:	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 months (Lake whitefish only) and 12 months of age (both species) using a shuttle box system. Round whitefish preferred a cooler temperature when incubated at 2 and 6°C compared with 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 Interests: D.R.B. received funding from Bruce Power and held a position of Bruce Power Chair in Radiation and Health at the Northern Ontario School of Medicine. (© The Author(s) 2023. Published by Oxford University Press and the Society for Experimental Biology.)
Databáze:	MEDLINE
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