Samstag, Juli 30, 2022
StartScience NewsTwo pathogens linked to salmon well being and survival -- ScienceDaily

Two pathogens linked to salmon well being and survival — ScienceDaily


Many wild salmon populations in B.C. have skilled substantial declines over the past three many years. New UBC analysis revealed right this moment might help chart a course in the direction of higher safety of untamed salmon.

The examine, 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 carefully linked to survival of free-ranging Pacific salmon within the ocean: Tenacibaculum maritimum, a bacterium that causes ulcerative illness in salmon and different cultured marine fish worldwide; and piscine orthoreovirus (PRV), a virus that causes illness in Pacific and Atlantic salmon worldwide, however whose impression 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 widespread on salmon farms in B.C., and up to date research present proof of transmission from farms to wild salmon.“

„Many research present that prime ocean temperatures impression salmon survival, however this new analysis reveals that in some circumstances pathogen presence may be extra vital,“ notes the examine senior creator Kristin Miller-Saunders, a molecular genetics scientist with Fisheries and Oceans Canada (DFO) and an adjunct professor of fisheries at UBC.

The analysis was funded by the Pacific Salmon Basis, Genome BC and DFO and revealed right this moment in FACETS.

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