Wild salmon swimming past B.C. fish farms are at high risk of picking up a virus that causes weakness and affects their ability to reach spawning grounds according to new groundbreaking research published this week in the scientific journal PLOS One (Public Library of Science One).

The study found the percentage of wild salmon infected with piscine reovirus (PRV) was much higher in wild salmon exposed to a large cluster of salmon farms along the B.C. coast than in those that were not.

“In my view allowing piscine reovirus to flow from salmon farms into the marine environment will be viewed as an environmental crime of the highest order,” independent biologist and study author, Alexandra Morton, told DeSmog Canada.

ICYMI: Disturbing New Footage Shows Diseased, Deformed Salmon in B.C. Fish Farms

Morton’s concern that enough isn’t being done to protect wild salmon stocks is in line with concerns from some coastal First Nations, which in August occupied two fish farms on the Central Coast over their opposition to open-pen farms.* In early December, environmental group Pacific Wild released footage showing clouds of blood emanating from fish plants on Vancouver Island; subsequent testing revealed that that blood, too, contained the virus and other parasites.

The new study also found infected wild salmon were less likely to make it back to high-elevation spawning grounds.

“This study provides the first evidence that exposure to farmed Atlantic salmon is associated with infection of wild Pacific salmon with PRV, a virus of significant concern to both the aquaculture industry and wild fisheries management and that PRV infection may impair the capacity of wild salmon to complete a challenging spawning migration, with the potential for population-level impacts,” the study concludes.

Alarmingly Low Salmon Stocks in B.C. Stoke Fish Farming Concerns

The findings come at a time of alarmingly low salmon returns in B.C. and, adding weight to the concerns, are recent scientific findings that PRV is linked to heart and skeletal muscular disease (HSMI). Although HSMI has not been found in wild salmon it was found at a fish farm in the Discovery Islands between 2011 and 2013.

HSMI makes the fish lethargic — something that is not necessarily a problem for penned fish, but is usually fatal for wild salmon, which are in danger of being eaten by predators such as eagles, seals or killer whales if they lie around on the surface, independent biologist and study author, Alexandra Morton, told DeSmog Canada.

“And we know the fish don’t even have to get HSMI. PRV lodges itself in the red blood cells and affects the ability to carry oxygen from the gills to the tissues,” Morton said.

If the infection progresses, the salmon’s heart and swimming muscles become damaged leaving the fish very weak.

Salmon farming companies would not give Morton access to their fish, so the team of scientists bought 262 farmed salmon and 35 farmed steelhead from supermarkets. Tests found PRV in 95 per cent of the salmon and 69 per cent of the steelhead.

Farmed salmon tested for study. Photo: Alexandra Morton

Highest Density of Infected Wild Salmon Near Highest Density of Fish Farms

The scientists then looked at wild salmon infection rates and found that the highest percentages of infected fish were in high-density fish farm areas such as the Broughton Archipelago, where 45 per cent of the wild fish were found to have the virus.

Wild fish around the Discovery Islands — where the Cohen Commission concluded that diseases from farmed salmon could have an irrevocable impact on Fraser River sockeye returns — were found to have a 37 per cent infection rate and 40 per cent of returning salmon in the lower Fraser River were infected.

ICYMI: Ban on New Fish Farm Permits Sidelined as Escaped U.S. Farmed Salmon Increase in B.C. Waters

However, as Fraser salmon made it to the upper reaches of the river, the infection rate dropped by about 50 per cent.

“This suggests that salmon infected with PRV are less capable of swimming up through strong rapids in places like Hells Gate and therefore unable to reach their spawning grounds,” said study co-author Rick Routledge, Simon Fraser University professor emeritus.

In contrast, in areas furthest away from salmon farms, such as the Skeena and Nass, the infection rate dropped to five per cent.

This is the first study in the world to compare infection rates in wild fish to infection rates in farmed fish and the difference between the north and south is startling, said Morton, an outspoken opponent of open net pen fish farms.

One oddity found in the study was that in Cultus Lake, where, last year, sockeye were listed as endangered, 76 per cent of the trout were found to be infected.

That will need further study, but the hypothesis is that the trout were infected by salmon that travelled through the Discovery Islands and the virus was then incubated in the lake, Morton said.

“It’s a durable virus, a nasty little thing and it can exist for quite a long time outside the fish. It’s shed in the feces and urine,” Morton said.

A recent, video-gone-viral showing “blood water” being pumped into the ocean near Campbell River from Brown’s Bay Packing Company, a farmed fish processing plant, shocked British Columbians — and effluent samples analyzed by the Atlantic Veterinary College tested positive for PRV.

Morton said her research was completed before the video was taken, but effluent from the processing plant could be contributing to the high PRV rate in the Discovery Islands. The discharges are currently being tested by provincial investigators.

The peer-reviewed study is being strongly criticized by the B.C. Salmon Farmers Association which issued a press release accusing Morton of using weak correlational data to draw strong conclusions.

“This paper is part of a deliberate activist campaign led by Alexandra Morton and can hardly be taken as unbiased research,” said Jeremy Dunn, the association’s executive director.

The release says it is impossible to sample fish in a supermarket and make claims about the exposure of wild salmon to a pathogen.

BCSFA says that PRV commonly affects Atlantic salmon raised in open net pens around the B.C. coast, but say it is rarely associated with any sort of sickness and, although research is continuing, results so far show the virus “has little to no effect on an animal’s fitness.”

The presence of PRV has been linked to HSMI in farmed fish in Norway where the number of HSMI infected salmon farms rose to 181 by 2014. The presence of HSMI in Norway has caused fatalities in farmed fish according to company Marine Harvest.

But that same causal connection has not been proven in B.C. or replicated in laboratory settings, according to the industry association.

Morton said that, after the virus was first identified in Norwegian fish farms in 1999 it moved rapidly through the industry, appearing in the United Kingdom, Ireland and Chile. Most salmon-farming companies operating in B.C. are Norwegian-owned and previous research found the strain of PRV identified in her study originated in Norway, she said.

“This work is a strong indicator that [federal] management of salmon farms is not consistent with law, the precautionary principle or the mandate handed down by the Prime Minister of Canada that [the Department of Fisheries and Oceans] use science to manage fish stocks,” Morton told DeSmog Canada.

Morton and Ecojustice are currently arguing in Federal Court that the government is acting illegally by issuing licences allowing juvenile farmed salmon to be put into ocean pens without testing for the virus as transferring diseased fish into wild fish habitat contravenes the Fisheries Act.

Salmon-farming companies Marine Harvest and Cermaq have joined DFO in contesting the lawsuit and claim their businesses would fail if the court says they cannot put infected fish in the ocean.

* Correction Dec. 15, 2017: Due to an editor's error a previous version of this article stated First Nations occupied B.C. fish farms in October. They in fact began their occupation in August.

Image: B.C. farmed salmon. Photo: Tavish Campbell

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Footage of bloody discharge being released into B.C.’s coastal waters from farmed-fish processing plants by photographer Tavish Campbell has made international headlines and prompted the promise of further investigation from both provincial and federal governments.

But critics say that while governments are eager to stem a wave of concerns arising from the footage, not enough is being done to protect B.C.’s threatened wild salmon populations from the threats of the farmed-salmon industry that stem from the use of open net pens.

In addition to the footage, Campbell collected samples of the discharge that laboratory testing found contained Piscene Reovirus, a disease carried in an estimated 80 per cent of Atlantic farmed salmon on the B.C. coast. The virus is linked to the presence of heart and skeletal muscle inflammation, a deadly condition found in B.C. wild salmon stocks.

B.C. Environment Minister George Heyman said the ministry dispatched inspectors to the Brown’s Bay processing plant near Campbell River to determine the contents of the effluent being released and take further samples if necessary.

“I think the bottom line for us is we want to make sure anything being dumped into our oceans is free of contaminants, fee of pathogens and not a threat to wild salmon,” Heyman told DeSmog Canada in an interview.

The Brown’s Bay processing plant received a discharge permit from the B.C. government in 1989, granting the company permission to release 28,000 litres of effluent every day. There are 109 fish processing plants in B.C.; if they are all releasing roughly the same as the Brown’s Bay plant, that’s ten Olympic swimming pools of effluent being released into B.C. waters daily.

The Brown’s Bay plant was inspected in 2013, and found to be out of compliance with the province’s environmental laws. According to Heyman no further inspection took place at the time.

The permit, which Heyman said does not reflect modern conditions and standards, is currently under review. He added there are older permits for additional fish processing plants the government will also place under review.

“We are looking at conditions that reflect today’s reality and today’s expectation and that’s that what is dumped in the ocean is clean and not a threat to wild salmon,” Heyman said. “So we’ll be looking at it from that perspective as well as from First Nations who are being consulted we’ll look at best practices around the world around discharges into the ocean.”

Bloodwater Not Only Threat Wild Salmon Face

Campbell said that while a review of B.C.’s out-of-date permits is warranted, the release of contaminated effluent is just one threat the farmed-salmon industry poses to wild salmon stocks.

“The bloodwater is certainly a point source for infection but if we get rid of the bloodwater the problem doesn’t go away because ultimately these juvenile wild fish are still swimming past the open net pens and picking up these viruses and diseases,” Campbell told DeSmog Canada.

Aaron Hill, ecologist and wild salmon policy analyst for the Watershed Wild Salmon Society, agreed.

“It’s really hard to quantify exactly where this wastewater discharge lands on the threat matrix but we know that salmon farms host a number of viruses and parasites that are transmitted to wild fish and harm wild fish,” Hill told DeSmog Canada.

“Many of our salmon populations are in really bad shape due to a number of factors,” Hill said, saying climate change is considered the number one threat to wild salmon.

“We can’t flip a switch and make the oceans more productive or make rivers cooler and safer for fish. But we can get these farms out of the ocean and onto land. We can stop bloody diseased waste from being piped into the water.”

Many of the companies operating farmed salmon open net pens in B.C. are Norwegian, the country behind many of the farmed salmon operations worldwide. Currently Norway does not allow for the discharge of fish processing waste into the ocean.

B.C.’s Environmental Monitoring and Enforcement Weak: Furstenau

British Columbia has a poor record of monitoring and enforcing its own environmental laws due to staff and budget cuts, according to Green Party MLA Sonia Furstenau.

“While I appreciate the Minister of Environment’s immediate response to the videos, we need a government that works to proactively protect our environment, not one that waits for the public to prove that we’ve got a problem,” Furstenau said during Wednesday’s question period in the house.

“Is the minister going to expand his review to cover every plant that releases effluent into wild salmon habitat to ensure it’s not contaminated, or will Mr. Campbell need to keep testing the blood water?”

The B.C. Ministry of Forests, Lands and Natural Resource Operations is responsible for leases and tenures for fish farms. Ocean discharge permits are managed by the province’s environment ministry.

However, regulation and promotion of the aquaculture industry falls to federal jurisdiction under the Fisheries Act.

Heyman said his ministry has been in contact with Environment Canada as well as local First Nations to discuss the effluent permits and Campbell’s footage.

“It’s important that all parties with jurisdiction take a unified approach to protecting wild salmon. That’s our expectation and we hope the federal government will join us and work with us and First Nations to protect wild salmon.”

Federal Natural Resources Minister Jim Carr said his ministry is also investigating the results of recent samples taken from the discharge pipes — and is open to potential changes under the Fisheries Act that would prevent the release of contaminants that could further threaten B.C.’s struggling wild salmon populations.

Campbell said he doesn’t see a way for open net fish farms and healthy wild salmon stocks to coexist. He hopes recent outrage over the outfall pipes will add to growing calls to move the aquaculture industry on land.

“I think the writing is on the wall for this industry. They can’t keep continuing to operate in the way they have been with open net pens in the water,” Campbell said.

“There’s too much opposition to it and there’s too much science saying if that’s going to happen we’re basically sacrificing our wild stocks.”

Permit 8124 – Brown Bay Fish Processing Plant by DeSmog Canada on Scribd

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Underwater footage shows farmed-salmon processing plants releasing untreated effluent directly into B.C. coastal waters in Campbell River and Tofino.

The footage, recorded by photographer and filmmaker Tavish Campbell, shows the bloody discharge billowing into ocean waters via underwater pipes.

The Atlantic Veterinary College confirmed samples of the effluent contained Piscine reovirus, a virus first found in B.C. farmed Atlantic salmon in 2011 but has since been detected in wild Cutthroat and Steelhead trout as well as wild Chinook, Sockeye Coho and Chum salmon.

Piscine reovirus is linked to heart and skeletal muscle inflammation, a condition that causes lesions in the heart and skeletal muscle, accumulation of fluids in body cavities, pale hearts, enlarged spleens and haemorrhages in the internal organs.

Researcher and wild salmon advocate Alexandra.Morton, who also examined the processing plant discharge, said the samples contained intestinal worms from farmed salmon.

Morton told CTV News she believes the release of bloody effluent could spread Piscene reovirus to wild salmon species.

“You are distributing the virus in a way that nature could never possibly do, and the risk to wild salmon is just astronomical,” she told CTV.

Campbell’s footage shows the discharge occurring at the Brown’s Bay Packaging plant in Campbell River. The company said it has obtained a effluent permit from the province.

B.C. Environment Minister George Heyman recently told reporters he recently became aware of the “very graphic” footage.

“We began investigating it and also checking about the lab tests that have been performed on some of the effluent,” Heyman said, adding the permits granted to Brown’s Bay Packaging were granted to the company decades ago.

“We are going to ensure, as we review the permit and put conditions on the permit, if necessary, that any discharge into the water is safe and will not contaminate wild salmon.”

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