New initiative launched to help restore European native oysters

The Roslin Institute in the UK, The Oyster Restoration Company, Native Aqua, and aquaculture genetics specialist Xelect have launched a new collaboration to address the declining numbers of European native flat oysters (Ostrea edulis).

The alliance aims to develop disease-resistant oyster strains through advanced genetic research in response to the adverse impact of Bonamia ostreae.

European native oyster populations have dwindled to less than five per cent of their historical levels due to overharvesting, pollution, and disease. The collaboration therefore focuses on identifying genetic markers that confer resistance to Bonamia ostreae. By combining advanced genomics with practical breeding programmes, the partnership aims to cultivate resilient oyster strains that can thrive in both wild and farmed environments.

The partners' respective contributions to the project are as follows:

• The Roslin Institute will lead genetic research efforts, identifying traits linked to disease resistance.

• The Oyster Restoration Company will manage breeding efforts and provide oysters for research projects.

• Xelect will utilise advanced genetic screening technologies to optimise the selection of resilient oyster strains.

• Native Aqua will apply expertise in sustainable farming practices, supporting the oysters’ adaptation across diverse habitats.

The initiative is designed to meet the distinct needs of various stakeholders:

• Environmental restoration: Delivering robust, disease-resistant oysters to replenish wild populations and restore marine ecosystems.

• Food industry: Supplying fast-growing, consistent oysters tailored to meet modern market demands.

Research is set to commence in January 2025, pending final funding approvals.