Abalone Welfare in Recirculating Aquaculture Systems

Abalone farming in RAS requires careful water quality management to prevent chronic stress in these sensitive marine gastropods with growing evidence for nociception.

Key Facts

Abalone are marine gastropods with complex feeding and movement behaviour
They require high water quality including dissolved oxygen above 7 mg/L
Temperature stress is a major welfare risk causing herpes virus outbreaks
Abalone emerging from water during air exposure show stress responses
Growing evidence suggests gastropod nociception warranting precautionary welfare approaches

Welfare Considerations

Abalone in RAS are highly sensitive to water quality fluctuations. Dissolved oxygen depletion causes emergence behaviour and prolonged air exposure with associated physiological stress. Temperature spikes trigger herpesvirus outbreaks causing mass mortality in naive populations. The emerging evidence for gastropod nociception, while not definitive, suggests precautionary welfare management is appropriate. Air exposure during handling and grading should be minimised. Water quality monitoring maintaining stable optimal conditions is both a welfare and production priority in abalone aquaculture.

What You Can Do

Support research into abalone sentience and welfare capacity
Advocate for precautionary welfare guidelines in abalone aquaculture
Encourage minimal air exposure during abalone handling and grading
Back investment in continuous water quality monitoring in abalone RAS
Choose abalone from certified welfare-aware producers where available