Aquatic Animal Welfare

Aquaculture Genetic Diversity and Welfare

Maintaining genetic diversity in aquaculture breeding programmes protects against disease vulnerability and inbreeding depression that would harm fish welfare.

Key Facts

Commercial aquaculture relies on a narrow genetic base in many species
Inbreeding reduces immune function, disease resistance and adaptive capacity
Atlantic salmon breeding programmes in Norway have maintained diversity while selecting for welfare traits
Cryopreserved gamete banks preserve genetic diversity for future use
Wild-farmed hybridisation is a welfare concern for wild fish in areas near farming

Welfare Considerations

Genetic diversity in aquaculture is a long-term welfare investment. Narrow genetic bases increase vulnerability to disease outbreaks and reduce resilience to environmental change. Responsible breeding programmes balance production trait selection with diversity maintenance.

What You Can Do

Support aquaculture certification schemes that include genetic management standards
Advocate for cryopreservation requirements in commercial aquaculture breeding programmes
Choose certified farmed fish from operations with documented genetic management practices