The effect of acute and chronic temperature stress in Baikal omul (Coregonus migratorius Georgi)

In this work, we describe the transcriptional profiles of Baikal omul juveniles after acute and chronic temperature stress exposure. The juveniles were kept for 1.5 months at 9–12 °C, followed by exposure to acute stress (heating to 21 °C for 1 hour) and chronic stress (heating to 21 °C for 24 hours 3 times a week for a month) in the Experimental Freshwater Aquarium Complex for Baikal Hydrobionts at the Limnological Institute (LIN SB RAS). The information on the transcriptional profiles will contribute to further understanding of the mechanisms of adaptation of whitefish to the environment. The experiment aims to study the effects of acute and chronic stress on aquaculture larvae of Baikal omul (Coregonus migratorius Georgi). The individuals were collected from ponds near the Belaya River (Belsky fish hatchery, Sosnovka village, Irkutsk region, 52 ° 50'05.4"N 103 ° 22'51.8"E). Individuals were kept for 1.5 months in aquaculture at a temperature of 9-12 ° C with subsequent heat treatment: acute stress implied rapid heating to 21 ° C for 1 hour, chronic stress implied heating to 21 ° C for 24 hours 3 times a week. Grant ID No.: RSF 23-24-00644 ( https://rscf.ru/project/23-24-00644/ ) Grant title: Biomarkers of temperature stress and indicators of the well-being of whitefish in the natural environment and in aquaculture for the further use of these biomarkers for monitoring work. Funding source: Russian Science Foundation