Aquaculture; improving????
- Thread starter islandboy
- Start date
Oh..... got it, theres only one set of goal posts. Can somone fetch another net pls?
Stans says it's in all salmon. C'mon AA...... did you even read the link you posted? I would imagine so as it's from watershed watch and you are a media guru for somone. This is tire some AA, you should just grab your rods and go fishing it will make you feel better.
Stans says it's in all salmon. C'mon AA...... did you even read the link you posted? I would imagine so as it's from watershed watch and you are a media guru for somone. This is tire some AA, you should just grab your rods and go fishing it will make you feel better.
Birdsnest
Well-Known Member
Here’s a page on diseases in ranched Alaskan salmon prv included. At least with farm salmon we can mitigate ,monitor, study, and regulate the farm populations. with salmon ranching. The just let them go and hope for the best. If they don’t return or get sick and die or share pathogens oh well.
https://www.adfg.alaska.gov/static/species/disease/pdfs/fish_disease_book.pdf
So do you wish to apply the precautionary principle to Alaska salmon ranching to or you just going to dig more post holes?
https://www.adfg.alaska.gov/static/species/disease/pdfs/fish_disease_book.pdf
So do you wish to apply the precautionary principle to Alaska salmon ranching to or you just going to dig more post holes?
ya - the Norwegian strain of PRv is common, NOW - on the Pacific Coast. gee - I wonder how that happened? What is the most plausible source? hmmm....
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141475
Now what fish or fish grown from egg implants in BC would most likely have brought PRv into BC? HINT:
https://veterinaryresearch.biomedcentral.com/articles/10.1186/1297-9716-45-35
"...PRV is ubiquitous in farmed Atlantic salmon..."
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141475
Now what fish or fish grown from egg implants in BC would most likely have brought PRv into BC? HINT:
https://veterinaryresearch.biomedcentral.com/articles/10.1186/1297-9716-45-35
"...PRV is ubiquitous in farmed Atlantic salmon..."
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Birdsnest
Well-Known Member
There are many plausible sources but we will never know. since you have failed to provide rebuttals to a few recent post I suspect your intent here is to assign blame for something we don’t completely understand.
we have scotch broom( an invasive species)in bc. You think we should ban Scottish and English trad e and businesses?
we have scotch broom( an invasive species)in bc. You think we should ban Scottish and English trad e and businesses?
Birdsnest
Well-Known Member
Read the discussion in this paper.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141475
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141475
many plausible sources being farmed fish - FF sites & FF companies - yep you are yet again correct, Birdie.
And the reason we can't understand it - or get an understanding of the epidemiology & transfer risks to wild salmon from many diseases released by FFs - is that the FFs are protected and hidden from the public's eyes by DFO & CFIA - and those federal regulators and the industry REFUSE to release real-time data w geographic coordinates so that we can figure this out. The latest cover-up in NFLD was but 1 recent example.
And instead of proving that they are having less than a negligible impact on wild stocks - the industry pundits reverse the burden of proof claiming that critics have no "proof".
I can only assume that since the industry is entirely unfamiliar with what an environmental assessment is - they see it that way. Like I said ignorance is a choice - sometimes made by FF lawyers when talking to Justice Canada lawyers in Ottawa - when confronted with the possibility of a class lawsuit.
And the reason we can't understand it - or get an understanding of the epidemiology & transfer risks to wild salmon from many diseases released by FFs - is that the FFs are protected and hidden from the public's eyes by DFO & CFIA - and those federal regulators and the industry REFUSE to release real-time data w geographic coordinates so that we can figure this out. The latest cover-up in NFLD was but 1 recent example.
And instead of proving that they are having less than a negligible impact on wild stocks - the industry pundits reverse the burden of proof claiming that critics have no "proof".
I can only assume that since the industry is entirely unfamiliar with what an environmental assessment is - they see it that way. Like I said ignorance is a choice - sometimes made by FF lawyers when talking to Justice Canada lawyers in Ottawa - when confronted with the possibility of a class lawsuit.
wildmanyeah
Crew Member
Ignorance is the choice by anti rural small business pundits that routinely turn a blind eye to the science that does not fit there large city donors.
we know how it is you see it again and again.
<Edited, Personal Attach>
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wildmanyeah
Crew Member
IMO the worst thing ENGO's have done is turn sports fishermen and hatchery volunteers against them. The very same people that care deeply about the environment and donate there time and money to it.
thank you for that spike in the back patagonia
thank you for that spike in the back patagonia
and the demonstration by most FF pundits of their lack of seriousness & professionalism on these wild/cultured stock interactions indicates to me not only do they appear to be unfamiliar with what an environmental assessment is - they are not experts in any way as to their impacts on wild stocks and should be ignored when attempting to minimize and de-legitimatize those concerns and issues.
Stephen Kowalski
Active Member
This is the most baffling point. Why is the outrage only directed at BC industry or Alberta pipeline's or oil tankers originating in Canada? Wouldn't it make sense that the noble environmentalists would start getting more concerned? Nope - one way street - shut down BC FF's, layoff the 5000-6000 (mostly aboriginals) working for them, and force tax payers to shell out dough for breach of contract. Next up - ban sport fishing closely followed by a lecture on why we need to by wild caught salmon from Alaska (processed in china) as it is sustainable and good for your heart. Not buying this shell game - just got back from Costco with a package of Farmed Atlantic Salmon. BTW, in the blind sushi taste tests, farmed Atlantic salmon won by a country mile. Man, this guy Rico is really rocking it! Kudo's for some others chiming in on the inconsistencies we were witnessing.
Stephen Kowalski
Active Member
Are you an expert? Pretty broad brush you are starting to use....hopefully we don't become deplorable's now.
wildmanyeah
Crew Member
Perhaps you missed this peer reviewed paper.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0146229
Piscine Orthoreovirus from Western North America Is Transmissible to Atlantic Salmon and Sockeye Salmon but Fails to Cause Heart and Skeletal Muscle Inflammation
wildmanyeah
Crew Member
Or perhaps you missed this one///
PISCINE ORTHOREOVIRUS (PRV) IN THE PACIFIC NORTHWEST APPEARS TO BE OF LOW RISK TO WILD PACIFIC SALMONIDS
https://www.dnr.wa.gov/sites/defaul... whitepaper revised Sept 2017.pdf?3c0h5&9laxp
Why PRV in the PNW is of low risk regarding HSMI in wild Pacific Salmonids
1. The disease “heart and skeletal muscle inflammation” (HSMI) has not been reported in wild salmon populations in Norway or elsewhere and appears to only be a threat to farmed fish
2. While PRV causes HSMI in farmed Norwegian Atlantic salmon, high levels of PRV genetic material have been detected in asymptomatic wild and cultured salmonids with no evidence of HSMI disease
3. Histopathological lesions of HSMI were recently described as statistically correlated with the presence of PRV at one Atlantic salmon farm in British Columbia, Canada (BC) while other studies have detected the presence of PRV genetic material in wild and cultured Chinook, coho and pink salmon and steelhead trout from Washington State, BC and Alaska where years of surveillance have reported no presence of HSMI
4. Molecular testing of archived fish tissues in BC has shown that PRV was present in asymptomatic wild and farmed Pacific salmon since 1987 and may have been present as early as 1977 before Atlantic salmon were imported for aquaculture
5. HSMI has not been reported in Pacific salmon or steelhead in North America to date
6. Laboratory studies with Chinook and sockeye salmon have demonstrated that PRV is infectious and will persist for quite some time but does not cause fish mortality, HSMI, or any other apparent disease
7. Development of HSMI and HSMI-like diseases of farmed salmonids (Atlantic and coho salmon; rainbow trout) infected by PRV may be a result of different viral strains, host specific antiviral responses and environmental stressors that do not appear to be present or active for indigenous salmon on the Pacific Coast
8. The presence of PRV genetic material in Pacific salmon tissues is not sufficient evidence for HSMI disease
PISCINE ORTHOREOVIRUS (PRV) IN THE PACIFIC NORTHWEST APPEARS TO BE OF LOW RISK TO WILD PACIFIC SALMONIDS
https://www.dnr.wa.gov/sites/defaul... whitepaper revised Sept 2017.pdf?3c0h5&9laxp
Why PRV in the PNW is of low risk regarding HSMI in wild Pacific Salmonids
1. The disease “heart and skeletal muscle inflammation” (HSMI) has not been reported in wild salmon populations in Norway or elsewhere and appears to only be a threat to farmed fish
2. While PRV causes HSMI in farmed Norwegian Atlantic salmon, high levels of PRV genetic material have been detected in asymptomatic wild and cultured salmonids with no evidence of HSMI disease
3. Histopathological lesions of HSMI were recently described as statistically correlated with the presence of PRV at one Atlantic salmon farm in British Columbia, Canada (BC) while other studies have detected the presence of PRV genetic material in wild and cultured Chinook, coho and pink salmon and steelhead trout from Washington State, BC and Alaska where years of surveillance have reported no presence of HSMI
4. Molecular testing of archived fish tissues in BC has shown that PRV was present in asymptomatic wild and farmed Pacific salmon since 1987 and may have been present as early as 1977 before Atlantic salmon were imported for aquaculture
5. HSMI has not been reported in Pacific salmon or steelhead in North America to date
6. Laboratory studies with Chinook and sockeye salmon have demonstrated that PRV is infectious and will persist for quite some time but does not cause fish mortality, HSMI, or any other apparent disease
7. Development of HSMI and HSMI-like diseases of farmed salmonids (Atlantic and coho salmon; rainbow trout) infected by PRV may be a result of different viral strains, host specific antiviral responses and environmental stressors that do not appear to be present or active for indigenous salmon on the Pacific Coast
8. The presence of PRV genetic material in Pacific salmon tissues is not sufficient evidence for HSMI disease
Birdsnest
Well-Known Member
Not according to the paper you posted where it states in the discussion:
“While European origin Atlantic salmon have been introduced to B.C. and Washington State, there has also been extensive transplantation of native Pacific salmon and trout eggs into Europe and elsewhere [19]. Transplanted rainbow trout contributed to the spread of infectious hematopoietic necrosis virus (IHNV), a salmonid virus endemic to western North America, to Europe and Asia [20, 21]. If PRV was endemic to western North America, it is equally probable that movement of infected Pacific salmon or trout eggs could have concomitantly spread PRV in Europe. There have been no published retrospective studies of archived samples conducted in Norway to determine how long the virus has been present in that country. However, Atlantic salmon tissues from Norway collected in 1988 tested positive for PRV RNA (Rimstad pers. comm.) suggesting that the virus was present at least a decade prior to the first reports of HSMI. There has been little surveillance for this virus outside Norway and Western North America. Thus, it is premature to speculate about transmission pathways given the lack of understanding of the global distribution of PRV.”
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141475
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