Seabream and Seabass Disease Management

Mediterranean seabream and seabass farming face significant welfare challenges from parasitic and bacterial disease, requiring proactive health management.

Key Facts

Gilthead seabream and European seabass are the most important Mediterranean aquaculture species with combined production over 400,000 tonnes
Sea lice infestation (Sparicotyle chrysophrii for seabream) causes chronic welfare compromise and skin damage
Nodavirus (VNN) causes viral nervous necrosis in both species, causing neurological symptoms and high mortality
Vaccination programmes have significantly reduced bacterial disease but viral and parasitic challenges remain
Water temperature fluctuations in Mediterranean production areas create seasonal disease vulnerability

Welfare Considerations

Disease management in Mediterranean aquaculture represents one of the most important welfare interventions available. Untreated parasitic infestations cause chronic irritation, immunosuppression and predisposition to secondary infection. Viral nervous necrosis causes neurological dysfunction and death that is distressing and rapid. Well-designed biosecurity, health monitoring and vaccination programmes can substantially reduce disease burden and associated welfare harm in seabream and seabass production.

What You Can Do

Choose seabream and seabass products from certified farms with documented health management programmes
Advocate for welfare standards that include disease management requirements for Mediterranean aquaculture
Support research into novel vaccines and treatments for priority diseases in seabream and seabass
Engage with Mediterranean aquaculture producers about welfare-focused disease prevention
Support development of aquaculture certification schemes that include Mediterranean species welfare