Transcriptomic responses to high water temperature in two species of Pacific salmon.

摘要: Characterizing the cellular stress response (CSR) of species at ecologically relevant temperatures is useful for determining whether populations and can successfully respond to current climatic extremes future warming. In this study, wild-caught adult pink (Oncorhynchus gorbuscha) sockeye nerka) salmon from Fraser River, British Columbia, Canada, were experimentally treated ‘cool’ or ‘warm’ water uncover common transcriptomic responses elevated temperature in non-lethally sampled gill tissue. We detected differential expression 49 microarray features (29 unique annotated genes one gene with unknown function) associated protein folding, synthesis, metabolism, oxidative ion transport that between Pacific held 19°C compared fish a cooler (13 14°C). There was higher mortality 19°C, which suggests possible relationship temperature-induced CSR these species. Our results suggest frequently encountered ≥19°C, are capable inducing across populations, may increase risk upstream spawning migration failure salmon.