Comprehensive pathogen diagnostics in wild fish populations using blood-based molecular strategies: an Atlantic herring case study
France Caza, Fanny Fronton, Lina Ennia, Dominique Robert, Yves St-Pierre · 2025
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Description
France Caza, Fanny Fronton, Lina Ennia, Dominique Robert, and Yves St-Pierre published a 2025 study on diagnosing pathogens in wild fish from a single drop of blood. Climate change is promoting pathogens that threaten key fish populations, and monitoring programs must adapt. The test case was Atlantic herring, a commercially vital species.
The team combined standard PCR tests with transcriptomic analysis of blood stored on FTA cards. They measured the prevalence of erythrocytic necrosis virus and the Ichthyophonus parasite across 2023 and 2024. Thirty-three percent of samples tested positive for the virus and ten percent for the parasite. Virus-positive fish were found more often in estuarine and coastal areas. Blood-based molecular surveillance lets managers track fish health without killing the animals sampled.
Catalog record
| CREATOR | France Caza, Fanny Fronton, Lina Ennia, Dominique Robert, Yves St-Pierre |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 41 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |