Identification of food deprivation in salmonids using gill biomarkers.

ABSTRACT: Risk assessments have identified prey limitation as one of the strongest risk factors for juvenile salmon survival under climate change. In British Columbia, Canada, juvenile Chinook salmon (Oncorhynchus tshawytscha) may experience prolonged periods of food deprivation upon marine entry and during their first marine winter. We assessed the physiological and transcriptional consequences of food deprivation to discover and develop mRNA-based biomarkers for food deprivation in the gill of juvenile Chinook salmon. Gill and liver tissue were collected from juvenile Chinook salmon held at 16 or 8°C that were fed or food deprived for up to 56 days and during a 21-day refeeding period. Chinook salmon at 16 and 8°C were able to withstand food deprivation for periods of 35 and 56 days, respec

SUBMITTER: Bugg WS 

PROVIDER: S-EPMC12716027 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature