Summary

This impact evaluation summarises the outcomes of CRCNA project: A.3.1718113 – Biosecurity in northern prawn aquaculture.

The project strengthened biosecurity capability in Australia’s prawn aquaculture sector by delivering the most comprehensive assessment of pathogen distribution, prevalence and transmission undertaken across Australian prawn farming production systems. Led by James Cook University in partnership with industry, the project provided critical evidence on disease pathways, identifying infected broodstock, post-larvae and water intake as key biosecurity risks, while supporting improved pathogen surveillance and farm-level risk management.

The project significantly increased the volume of pathogen data available to Australian prawn farmers, supporting compliance with Queensland biosecurity regulations and informing improved biosecurity management plans. Farm-specific pathogen data, staff training in disease monitoring and biosecurity, and industry adoption of project recommendations strengthened on-farm capability, particularly for smaller operators with limited access to specialised diagnostics and technical expertise.

Expected longer-term impacts include reduced disease risk and production losses through stronger biosecurity practices, increased adoption of domesticated broodstock, improved pathogen monitoring and more resilient prawn farming operations. At the time of assessment, the project had delivered a 5.8 times return on CRCNA’s investment, supported approximately $1.1 million in follow-on research investment, and established a foundation for continued innovation in prawn aquaculture biosecurity.