Navigation Links
Virus discovered in Cultus Lake sport fish
Date:7/19/2012

A Simon Fraser University fish-population statistician, working in collaboration with non-government organization scientists, has uncovered evidence of a potentially deadly virus in a freshwater sport fish in B.C.

SFU professor Rick Routledge and Stan Proboszcz, a fisheries biologist at the Watershed Watch Salmon Society, have found evidence of the piscine reovirus (PRV) in cutthroat trout caught in Cultus Lake, in the Fraser Valley region of B.C.

Tests conducted by, Fred Kibenge, a virology professor at the Atlantic Veterinary College in Prince Edward Island, found evidence of the virus in 13 of 15 sampled fish. Follow-up analyses further confirmed the virus's presence in these fish and identified their genetic sequencing as 99 per cent identical to Norwegian strains.

The virus has been scientifically linked to heart and skeletal muscle inflammation (HSMI), a disease that has reportedly become widespread in Norwegian salmon farms and can kill up to 20 per cent of infected fish.

Routledge believes this first ever discovery of PRV in a B.C. freshwater sport fish indicates the virus could be prevalent in B.C.

Many Canadian scientists and interest groups are concerned that B.C. salmon farms pose a serious risk to wild Pacific salmon. Scientists in other countries have specifically raised concerns about the spread of PRV from farms to wild salmon.

"If PRV has been found in a Cultus Lake sport fish it could be contributing to the failure of the lake's sockeye population to return in abundance," says Routledge.

He notes the federal government-mandated Committee on the Status of Endangered Wildlife in Canada has listed the species as endangered.

"The discovery of PRV in Cultus Lake's cutthroat trout also begs the question is it in other related species in the lake, such as rainbow trout, kokanee and Dolly Varden? This latest discovery could also mean that salmon and trout in any lake exposed to spawning salmon returning from the North Pacific must be considered at risk of infection."

Earlier this year, SFU honorary degree recipient Alexandra Morton, an independent biologist who collaborates on fish research with Routledge, reported that lab tests had found PRV in Atlantic salmon sold in B.C. supermarkets.

PRV is the second virus commonly associated with salmon farming that scientists say they have found in wild Pacific salmon and trout. Last fall, Routledge and Morton reported positive test results for the infectious salmon anaemia virus (ISAv) in sockeye salmon smolts.

Scientists testifying at the Cohen Commission Inquiry a federally commissioned investigation of the Fraser River's declining sockeye population have brought forth highly contested evidence of ISAv in other wild salmon populations, including Cultus Lake sockeye. The inquiry is scheduled to release its findings this fall.

"We discovered during the Cohen inquiry that pathogens are a major concern for B.C.'s salmon," says Craig Orr, executive director of Watershed Watch and an SFU graduate. "Our findings suggest we need to broaden our thinking and concerns for freshwater fish as well."

"There are many examples of devastating impacts of introduced pathogens in human, mammal and marine populations," adds Routledge.

"When small pox was introduced to North America it decimated the aboriginal population, which had not had any previous opportunity to build up a natural immunity to the disease. The potential for this to happen to B.C.'s highly valued Pacific salmon and trout populations must be taken seriously."


'/>"/>

Contact: Carol Thorbes
cthorbes@sfu.ca
778-782-3035
Simon Fraser University
Source:Eurekalert

Related biology news :

1. 3-D motion of cold virus offers hope for improved drugs using Australias fastest supercomputer
2. Viruses linked to algae that control coral health
3. Levels of hepatitis C virus higher among African-Americans and males
4. Researchers moving towards ending threat of West Nile virus
5. Flu immunity is affected by how many viruses actually cause the infection
6. Gut microbes battle a common set of viruses shared by global populations
7. Brothers in arms: Commensal bacteria help fight viruses
8. Childhood virus infection linked to prolonged seizures with fever
9. IU role in Human Microbiome Project exposes battle history between bacteria, viruses in human body
10. Highly contagious honey bee virus transmitted by mites
11. To spread, nervous system viruses sabotage cell, hijack transportation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/15/2016)... -- Yissum Research Development Company of the Hebrew ... Hebrew University, announced today the formation of Neteera ... human biological indicators. Neteera Technologies has completed its first ... ... emissions from sweat ducts, enables reliable and speedy biometric ...
(Date:3/10/2016)... India , March 10, 2016 ... a new market research report "Identity and Access Management ... & Audit, Compliance, and Governance), by Organization Size, by ... to 2020", published by MarketsandMarkets, The market is estimated ... USD 12.78 Billion by 2020, at a Compound Annual ...
(Date:3/8/2016)... , March 8, 2016   Valencell ... technology, today announced it has secured $11M in ... GII Tech, a new venture fund being launched ... additional participation from existing investors TDF Ventures and ... funds to continue its triple-digit growth and accelerate ...
Breaking Biology News(10 mins):
(Date:5/20/2016)... (PRWEB) , ... May 20, 2016 , ... Korean researchers ... that it may offer a new way to treat the disease. Surviving Mesothelioma has ... now. , Scientists from several Korean institutions based their mesothelioma study on the ...
(Date:5/19/2016)... Ashland, Virginia (PRWEB) , ... May 19, 2016 , ... ... a new 30,000 square foot office building is complete. The new structure adds a ... In 2011, Anton Paar USA purchased 2.4 acres of land, along with ...
(Date:5/19/2016)... -- There is no saying when exactly ... pressures in pricing and lack in consumer confidence. One ... - numerous opportunities are up for grabs but this ... four names in this sector: Portola Pharmaceuticals Inc. (NASDAQ: ... VTAE ), Anthera Pharmaceuticals Inc. (NASDAQ: ...
(Date:5/19/2016)... May 19, 2016 ... (OTC PINK: RGBPP) announced today initiation of a ... cord blood based cancer immunotherapeutic product leveraging its ... Regen described a generation of cord blood derived ... gene silencing.  The product in development will be ...
Breaking Biology Technology: