Environmental DNA from multiple pathogens is elevated near active Atlantic salmon farms
| Autor: | Martin Krkošek, John P. Volpe, Shaorong Li, Gideon J. Mordecai, L. Neil Frazer, Amy Tabata, Angela D. Schulze, Brendan Connors, Kristina M. Miller, Steven M. Short, Lindsey Ogston, Dylan Shea, Andrew W. Bateman |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Farms animal diseases infectious disease Salmo salar microparasites Fisheries Zoology Aquaculture Biology 01 natural sciences General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Fish Diseases Animals Environmental DNA 14. Life underwater Domestication wild salmon Pathogen 030304 developmental biology General Environmental Science disease spillover 0303 health sciences General Immunology and Microbiology Ecology British Columbia business.industry Host (biology) 010604 marine biology & hydrobiology General Medicine DNA Environmental Infectious disease (medical specialty) Salmon aquaculture General Agricultural and Biological Sciences business Water Microbiology Microparasite Research Article Environmental Monitoring |
| Zdroj: | Proceedings of the Royal Society B: Biological Sciences |
| ISSN: | 1471-2954 0962-8452 |
| Popis: | The spread of infection from reservoir host populations is a key mechanism for disease emergence and extinction risk and is a management concern for salmon aquaculture and fisheries. Using a quantitative environmental DNA methodology, we assessed pathogen environmental DNA in relation to salmon farms in coastal British Columbia, Canada, by testing for 39 species of salmon pathogens (viral, bacterial, and eukaryotic) in 134 marine environmental samples at 58 salmon farm sites (both active and inactive) over 3 years. Environmental DNA from 22 pathogen species was detected 496 times and species varied in their occurrence among years and sites, likely reflecting variation in environmental factors, other native host species, and strength of association with domesticated Atlantic salmon. Overall, we found that the probability of detecting pathogen environmental DNA (eDNA) was 2.72 (95% CI: 1.48, 5.02) times higher at active versus inactive salmon farm sites and 1.76 (95% CI: 1.28, 2.42) times higher per standard deviation increase in domesticated Atlantic salmon eDNA concentration at a site. If the distribution of pathogen eDNA accurately reflects the distribution of viable pathogens, our findings suggest that salmon farms serve as a potential reservoir for a number of infectious agents; thereby elevating the risk of exposure for wild salmon and other fish species that share the marine environment. |
| Databáze: | OpenAIRE |
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