From Fields To Fjords; A Framework for Enhancing Fish Performance and Resilience Across Global Aquaculture Environments

Background<br/>Selective breeding in Atlantic salmon (Salmo salar) has improved growth and disease resistance, but gains are inconsistent across farming environments caused by genotype-by-environment (GxE) interactions. Genotype reranking reduces selection accuracy and slows genetic progress. Environmental stressors such as extreme temperature events can cause end weight loss and mortality. Mortality is up to 17.7% annual mortality in Scotland (Figure 1). Climate change is increasing the frequency and severity of heat stress events.1-5