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Large die off of #salmon in #NortonSound region, #Alaksa, #USA

Fish Kill Alert

Norton Sound residents have reported salmon die-offs in unusually large numbers during the last week.

According to the Norton Sound Economic Development Corp., dead pre-spawned pink salmon were found in multiple river systems last weekend.

The corporation’s fisheries director, Wes Jones, says the numbers of dead humpies being reported are larger than what’s normally seen in the Norton Sound region, spread out across several communities from east to west.

“There’s been reports all the way from here (Unalakleet) in Eastern Norton Sound all the way over to the Nome area. And it’s a very widespread area. The big change is that it appears that it is a much bigger event happening in eastern Norton Sound than what you’re seeing as you get closer to the Nome area.”

One of those reports came from Sophia Katchatag, the community coordinator for the Native Village of Shaktoolik. On Tuesday evening, Katchatag took her family up the Shaktoolik River, to a place called Jink-wok, to swim and cool off from the hot weather. She found a creek with “one area completely filled with dead pinks floating on top of the river.”

Katchatag didn’t pick any of them up, and she doesn’t intend to eat them, either.

Courtesy of adn.com

https://tinyurl.com/yy96vn8b

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8 MILLION #salmon dead due to #algae bloom in #Norway

Fish Kill Alert

About eight million farmed salmon have suffocated in northern Norway over the past week as a result of persistent algae bloom, an industry body estimated on Thursday, a blight that some experts suggest has been aggravated by climate change.

Norway is a dominant producer of farmed salmon, and the economic impact of the bloom is significant.

A statement from the Norwegian Directorate of Fisheries estimated the amount of salmon lost at 11,600 metric tons, worth about 720 million kroner, or more than $82 million. An industry group, the Norwegian Seafood Council, suggested the total could be much higher.

“Preliminary numbers point to eight million dead fish — corresponding to 40,000 metric tons of salmon that won’t reach markets,” Dag Sorli, a spokesman for the council, said in an email on Thursday. He put the value of the losses at 2.2 billion kroner.

Courtesy of nytimes.com

https://tinyurl.com/y2m2vp7g

123 TONS of #salmon suddenly #die in a #fish farm in #Castro, #Chile

Fish Kill Alert

The company Salmones Camanchaca, reported abrupt and sudden mortality of 123 tons of salmon at the Pilpilehue center, located in ACS 10 B, near the city of Castro, due to the presence of concentrations over 250 cells per ml of Pseudochattonella cf verruculosa , on the surface, activating immediately its plan of action against massive mortalities. The event would have occurred on the previous night and early Thursday morning.

Sernapesca regional staff was immediately established in the farming center stating that mortality is being withdrawn according to the available logistics, in addition to informing the regional inter-institutional environmental contingency committee.

It should be noted that Sernapesca keeps in surveillance the centers that make up the concession group 10B, ACS to which the Pilpilehue center belongs, since February, considering the presence of Pseudochattonella cf verruculosa , in concentrations under alert levels.

Courtesy of sernapesca.cl

https://tinyurl.com/y5fsxyww

250,000 salmon die due to algal bloom in British Columbia, Canada

An algae bloom in the Jervis Inlet in British Columbia, Canada, has killed an estimated 250,000 fish at two Grieg Seafood’s salmon farms in the area.

The Bergen, Norway-headquartered company, which operates several salmon farms and a hatchery in British Columbia, said an outbreak of heterosigma, a species of microscopic algae, spread in high concentration through the entire water column in the inlet.

“Grieg Seafood continuously works to improve biosecurity and all of Grieg Seafood’s sites perform algal monitoring by taking daily samples which are analyzed using advanced image analysis techniques. This allows for the identification of the species, prevalence and depth distribution of any algae present,” the company said in a press release.

However, due to the abundance of the algae, the company said use of aeration treatments or other measures to protect its fish “could not prevent the incident.”

The bloom killed an estimated 50 percent of the fish at the two sites, a total loss estimated at 1,000 tons. The fish were scheduled to be harvested in the second half of 2018, the company said.

In its release, Grieg Seafood said it carried insurance, and that the estimated cost of the die-off, including individual share of insurance, will total around NOK 25 million (USD 3.1 million, EUR 2.6 million). That cost will be realized on the company’s second-quarter financial statement, Grieg said.

Courtesy of seafoodsource.com

https://tinyurl.com/ybuld5cv

1.35 Million farmed Salmon died during 6 months, due to disease, in Macquarie Harbour, Australia

Fish Kill Alert

After it is revealed more than a million farmed fish died within six months in Macquarie Harbour, one salmon company effectively says “we told you so”, another says the dead fish were “replaced quickly” and the third says it has no obligation to detail its losses to the public.

Tasmania’s Environment Protection Authority (EPA) confirmed 1.35 million salmon died in Macquarie Harbour on Tasmania’s west coast since last October.

An area management agreement report provided by Huon Aquaculture, Petuna and Tassal found the deaths were mainly due to an outbreak of pilchard orthomyxovirus (POMV), transferred from wild populations.

That report had not been made available to the public.

EPA director Wes Ford told ABC Hobart the 2017 “mixing of young fish with old fish” could exacerbate the likelihood of disease in the population.

“POMV can be exacerbated by stress caused by heat, low oxygen, and I think this summer we’ve seen some elevated temperatures and clearly some concerns about oxygen.”

He confirmed the EPA would be reducing Macquarie Harbour’s biomass limit by 21 per cent over the next two years, from 12,000 tonnes to 9,500 tonnes.

Courtesy of abc.net.au

https://tinyurl.com/ycb4ebrc

Hundreds of dead salmon found washed up on a beach in Port Lincoln, Australia

FISHERIES: Dead salmon.
Dead salmon found strewn along the beach at Fishery Bay in recent weeks are being tested by Primary Industries and Regions South Australia.
 
The department received a report of hundreds of dead salmon washed up along the beach last Monday night, April 30.
 
Fisheries officers inspected the area and collected samples of the fish for testing.
 
A spokesperson for the department said the test results were expected back early this week.
 
Courtesy of portlincolntimes.com.au 
 

125,000 salmon die in disease outbreak at Lewis fish farms in Scotland

salmon
Photo By REUTERS
About 125,000 salmon have died due to a disease outbreak at two fish farms on the Isle of Lewis, BBC Scotland has learned.
 
Marine Harvest confirmed that the sites in Loch Erisort have been hit by the bacterium Pasturella Skyensis.
 
The company has apologised to local people concerned about the smell of decay in the area and the sight of lorries carrying away dead fish.
 
The pathogen is believed to have taken hold at the farms at the end of August.
 
One theory behind the emergence of the disease is that climate change and rising ocean temperatures could be making Scottish fish farms more vulnerable to bacterial infections.
Courtesy of BBC News

Masses of wild salmon turning up dead, ‘a mystery’, along the Cedar River, USA

More sockeye salmon are dying before they spawn this year, and scientist want to know why.
 
Biologists with West Fork Environmental collect sockeye carcasses as they cover more than 20 miles of salmon habitat in the Cedar River each week.
 
So far this season, they’ve picked up 1,600 dead fish. They mark the GPS location of each carcass and tag the fish. This year, they’ve found more sockeye dying before they ever spawn.
 
“That’s been one of the biggest Eureka’s and surprises, but it’s not a good one, because there’s mystery around this disease or suite of diseases, and then problems with what we can do to counteract it,” Michelle Koehler, who works with Seattle Public Utilities on the carcass survey.
 
The heads of the salmon are dissected for the otolith, which is a piece of the inner ear that tells scientists whether the fish are hatchery or wild sockeye. It also tells age and provides clues about environmental conditions during the sockeye’s lifetime.
 
Scientists want to know how hatchery sockeye affect wild salmon. The collection also shows whether the hatchery fish are spawning around all parts of the river.
 
“That’s what these scientists have actually been able to verify,” said Michelle Koehler, who works with Seattle Public Utilities on the carcass survey.
 
The disease that is killing the salmon is likely caused by a parasite, but it could be more common with warming water temperatures. There is no human health risk associated with the disease, according to West Fork Environmental.
Courtesy of usatoday.com

Mass die off of salmon in fish farms, due to ‘toxic algae’ in British Columbia, Canada

The call came in at the end of a busy day last week: ‘Cermaq is experiencing a mass die-off at two of their farms in Clayoquot Sound’. By early morning the next day we had assembled a volunteer boat driver and photographer, sourced a donated water taxi, and raised the funds to fuel the boat and hire a videographer complete with drone. We set off in anticipation.
 
The first farm we got to didn’t seem to have any unusual activity, other than the whole Herbert Inlet was a weird murky turquoise. An employee boated over to photograph us, and a polite exchange followed. ‘We’re not sure what this colour is’, he said. ‘We’ve been seeing it for six weeks—could be Chryso’ (shorthand for Chrysochromulina, a species of algae).
 
The second farm we reached was the Millar Channel farm, just kilometres north of the site evicted by Ahousaht First Nations, after it was occupied by the Yaakswiis Warriors last September. There was a hum of activity: workers tossing dead salmon into totes, which were lifted and dumped into semi-trailers designed to haul away animal remains. The tubes sucking the dead fish (morts) from the pens were getting plugged up with the sheer numbers, and divers were in the pens unplugging them.
 
We observed the activity, documenting what was going on and taking video and photos. A fish farm boat then followed us to the Dixon Bay farm, which appeared to be dormant. Time to head back to Tofino to get the word out!
Courtesy of clayoquotaction.org

40,000 TONS of Salmon and 8,000 TONS of Sardines have washed up dead, due to red tide in Chile

Photo: Alvaro Vidal AFP
A huge amount of dead salmon and sardines are accumulating on the Pacific coast of Chile since early this year due to the effect of climate phenomenon known as El Niño, reports Telesur .
 
It is estimated that water has expelled Chilean beaches a total of 40,000 tons of Salomes in the region of Los Lagos, representing 12% of the annual production of salmon from Chile. This month also appeared 8,000 tons of sardines in the mouth of the river Queule.
 
In addition, they have also discovered thousands of dead shellfish and clams stacked on the coast of the Big Island of Chiloe, as well as several cuttlefish dead on the shores of the island of Santa Maria.
 
Scientists blame these anomalies climate phenomenon El Niño, which causes warming of the surface waters in the Pacific Ocean Ecuador, next to the American continent, raising them to higher temperatures than normal. To this other phenomenon known as red tides, which is the presence of small algae called alexandrium catenella, which generate a venom causes paralysis of the nervous system and kills shellfish and seafood of the area adds. In addition, consumption can be harmful to both other animals and humans.
 
Meanwhile, fishermen in the region of Los Lagos in Chile, maintain a blockade access to the big island of Chiloe in protest at the lack of support they receive from the government to offset the effects caused by the death of these marine species.
Courtesy of actualized.rt.com