Tag Archives: PRV in Chinook

Rivers & Oceans

Report of the Standing Committee on Fisheries and Oceans

Originally published by the Parliament of Canada

On 1 February 2022, the House of Commons Standing Committee on Fisheries and Oceans (the Committee) agreed to undertake a study to “examine how the Department of Fisheries and Oceans prioritizes, resources and develops scientific studies and advice for the department, how the results of scientific study are communicated to the Minister and Canadians, and how the minister applies data and advice provided by the department and other government departments to ministerial decisions.”The Committee heard from 57 witnesses over nine meetings held between 26 April 2022 and 7 October 2022.

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Rivers & Oceans

PRV1a in fish farms, an interview with Dr Gideon Mordecai

Editor’s note: In Dr Mordecai’s most recent study, the PRV-1a virus was reported beside fish farms in the Okisollo Channel and Raza Island. Wild salmon infected with that virus would have swam by neighbouring Cortes, Read and Quadra Islands on their way home to spawn. 

Dr Gideon Mordecai is a Research Associate with the Institute for the Oceans and Fisheries at UBC. He is also the author of more than 20 scientific publications, the most recent of which reported the PRV1a virus was in 70% of the samples they studied from 56 fish farms.

Cortes Currents asked Dr. Mordecai,”Fish farms are claiming that BC’s PRV1 isn’t deadly for wild salmon. Is that true?” 

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Rivers & Oceans

47 days until a decision must be made: sea lice and pathogens

As we get closer to June 30, when the Department of Fisheries and Oceans (DFO) has to decide whether to reissue the licenses for 79 British Columbian salmon farms, independent biologist Alexandra Morton points to yet more problems. 

A recent Global and Mail article revealed the existence of a decade old Department of Fisheries (DFO) report about the ‘transmission of the PRV virus from farmed to wild salmon.’

Morton said the fish farm industry has exceeded the three lice per fish threshold every week since the out-migration season began on March first. Two to five active farms have exceeded that limit every week, for the past five weeks. Morton claims that no sooner had the industry brought the lice on one farm under control, than another exceeds the limit. 

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Rivers & Oceans

PRV spreads from salmon farms to wild Chinook, study says

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“Our findings show that salmon farms are, indeed, a source of infection for wild fish. Viruses leave a genetic fingerprint. The genetic fingerprint shows that the same viruses that are on the farms are in the wild fish. All the evidence suggests that the virus is being transmitted from the farm to wild fish. I haven’t seen any evidence that says that’s not happening,” said Dr Gideon Mordecai, a viral ecologist at the University of British Columbia and the lead author of a paper published in Science Advances last month.

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Rivers & Oceans

Salmon farms infecting wild Chinook salmon, study suggests

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National Observer, Local Journalism Initiative Reporter

The transmission of a virus tied to kidney and liver damage in endangered Chinook salmon is being fuelled by the exchange of the disease between open-net pen fish farms and wild stocks in B.C., a new study indicates.

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