Samstag, Juli 30, 2022
StartScience NewsTwo pathogens linked to salmon well being and survival in British Columbia

Two pathogens linked to salmon well being and survival in British Columbia

Two pathogens linked to salmon health and survival in B.C.
Credit score: Drew Farwell/Unsplash

Many wild salmon populations in British Columbia (B.C.) have skilled substantial declines over the past three many years. New UBC analysis printed in FACETS helps chart a course in the direction of higher safety of untamed salmon.

The research, led by UBC school of forestry member Arthur Bass and utilizing knowledge generated by the Strategic Salmon Well being Initiative, assessed dozens of pathogens in 1000’s of Chinook and Coho salmon sampled over a decade alongside the B.C. coast.

For the primary time ever, researchers have been in a position to determine the pathogens most intently linked to survival of free-ranging Pacific salmon within the ocean: Tenacibaculum maritimum, a bacterium that causes ulcerative illness in salmon and different cultured worldwide; and piscine orthoreovirus (PRV), a virus that causes illness in Pacific and Atlantic salmon worldwide, however whose influence on salmon in B.C. is vigorously debated.

„That is the primary empirical proof that PRV is negatively impacting wild Pacific salmon in B.C.,“ says Dr. Bass, a postdoctoral researcher at UBC’s Pacific Salmon Ecology Conservation Lab. „These two pathogens are frequent on salmon farms in B.C., and up to date research present proof of transmission from farms to wild salmon.“

„Many research present that top ocean temperatures influence salmon survival, however this new analysis exhibits that in some circumstances pathogen presence will be extra essential,“ notes the research senior writer Kristin Miller-Saunders, a molecular genetics scientist with Fisheries and Oceans Canada (DFO) and an adjunct professor of fisheries at UBC.

Wild Pacific salmon catches down 80%, in keeping with Indigenous elders

Extra data:
Arthur L. Bass et al, Identification of infectious brokers in early marine Chinook and Coho salmon related to cohort survival, FACETS (2022). DOI: 10.1139/facets-2021-0102

Two pathogens linked to salmon well being and survival in British Columbia (2022, Might 19)
retrieved 19 Might 2022

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