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The study, led by Genics in collaboration with the State University of Maranhão, CSIRO, and genotyping partner Weatherbys Scientific, assessed the pathogen load and genetic diversity of a domesticated population of black tiger shrimp from Ceará, Brazil, across ten generations. Pathogen screening of ninety-six shrimp using molecular diagnostics and histopathology revealed no significant pathogens, establishing the population as a potential foundation for a specific pathogen-free (SPF) breeding programme.
Genetic analysis using SNP markers showed a low inbreeding coefficient of 0.03, comparable to international populations in Vietnam and Australia. The findings suggest that the Brazilian broodstock is well-positioned to serve as the foundation for a structured breeding programme focused on disease resilience and sustainable growth.
Dr Melony Sellars, CEO of Genics, said in a press release: “This is a pivotal finding for the Brazilian shrimp farming sector. By demonstrating that local black tiger shrimp populations are pathogen-free and genetically diverse, we’re providing the industry with the tools to enhance resilience, reduce disease risk, and foster sustainable production systems.
Pathogen-free, genetically diverse populations are essential for aquaculture sustainability. This research not only provides a blueprint for the Brazilian shrimp industry but also demonstrates the potential for local breeding programmes to reduce reliance on imported stocks and mitigate the spread of infectious diseases.”
The study also highlighted the importance of comprehensive pathogen screening and genetic analysis as critical components of aquaculture management. Genics’ ShrimpID P. monodon service leverages high-density SNP markers to accurately assess genetic diversity and trace lineage, providing shrimp farmers with vital insights to inform breeding programmes and optimise stock performance - further supporting Genics' mission to advance biosecurity and food security globally.
Weatherbys Scientific said they are “delighted to play a part in building the future of aquaculture - one genotype at a time.”
