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Old 6th February 2010, 15:26
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Default River Vosso

After reading great news about the Beiar River, what happened to the once great River Vosso, I assume it got the devastating parasite, Gyrodactylus Salaris to? or did it? If it did get GS does anyone think it will ever return to its former glory days of big salmon?

Mitchell
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Old 6th February 2010, 17:24
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Originally Posted by mitchell37 View Post
what happened to the once great River Vosso
A very sad story indeed The fish used to average over 24lbs! No Gyro on the Vosso system but there are hundreds - yes hundreds of fish farm pens in the very long fjord system that the Vosso runs into. With a blanket of sea lice and large numbers of escaped salmon interbreeding with few remaining wild salmon the Vosso spiralled into a desperate decline. It is a shadow of its former self but I have heard a glimmer of hope. It is an interesting tale and I shall find out more.

The 'nearish' Laerdal once the jewel in Norway's crown does have Gyro. Tragic really.

Colin
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Old 8th February 2010, 16:52
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Default Escaped farmed Atlantic salmon replace the original salmon stock in the River Vosso

Here is more grim reading:

Escaped farmed Atlantic salmon replace the original salmon stock in the River Vosso, western Norway

Authors: Sægrov H.1; Hindar K.2; Kålås S.1; Lura H.3

Source: ICES Journal of Marine Science, Volume 54, Number 6, December 1998 , pp. 1166-1172(7)

Publisher: Academic Press

Link to article
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Old 8th February 2010, 16:52
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Default Norwegian Vosso Documentary

NRK Nett-TV - hastighetsmåling
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Old 8th February 2010, 17:00
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Default Now or never for Vosso salmon

Now or never for Vosso salmon

From the Directorate for Nature Management, Norway


Click here for original Norwegian Verison


Below: Verison translated by Google:

The original Vosso salmon are extinct in the wild. Escaped farmed salmon and sea lice are the most acute threats, according to new research.

-Escaped farmed salmon that migrate up and spawn in the river Vosso in Hordaland has spread their genes, so it is now unlikely that it occurs naturally spawning of the original Vosso salmon in the River. Today is the original wild salmon from Vosso only in our Gene Bank in Eidfjord, "says Director Janne Sollie in the Directorate for Nature Management (DN).

The conclusion is drawn from a new report DN has received from the University Research in Bergen (Unifob). The research results are based on extensive surveys of the population of Vosso salmon and its living environment in the period 2000-2007. The surveys are conducted by several key research institutions.

Smolt attacked
When the young salmon in the river is ready to walk into the ocean, they are called smolts. The report shows that the attacks of lice can result in 80 percent increased mortality in the smolt are released into the outer sea areas.

Smolt of Vosso salmon have a long sea journey and must pass several farms on his way out. Research results show that the lice, along with genetic interference by escaped farmed salmon, they constitute the most acute threats to Vosso salmon.

- To avoid Vosso salmon to go completely lost, the attack of sea lice on the utvandrende smolt and the number of escaped farmed salmon in the river is reduced sharply, "said Sollie.

A great effort from the aquaculture industry and cooperation with wild salmon interests is a prerequisite for successful reconstruction of the original salmon tribe.

The world's largest
Vosso salmon is the world's largest Atlantic salmon. Fangstrapporter from the time it was fished Vosso salmon show that the average weight was more than ten kg. In the late 80s, the salmon stock in Vosso watershed greatly reduced. It has not been able to pick up again and has been protected since 1992.

Water quality in Vosso watershed is currently not harmful to salmon, but there are grounds to assume that in the brackish water areas is toxic aluminum at a level that can have a negative impact on smolt survival. Still remains work to determine what effect this has on the stock.

Many need help to save Vosso salmon. The report points out that it requires comprehensive and coordinated efforts from several industry sectors and regulatory authorities. On the basis of the conclusions of the research has DN prepared a plan to return and rebuild the original Vosso salmon.

Towing smolts to the coast
In the beginning, shall Vosso salmon given "artificial respiration". Voss hatcheries produce salmon smolt of eggs from Gene Bank. Smolt get medicine for lice and being towed in the tank towards the coast. The research shows that the measure is increasing smolt survival significantly. This will be expanded as a Joint financing between government and business interests.

- Salmon in the gene bank has a limited life and must be used within the next ten years. So it's now or never for Vosso salmon, "says DN-director Janne Sollie.

The results of the report is seriously far beyond Vosso watershed. Probably the situation is similar for other salmon populations that have not been as thoroughly investigated.

Working methods and measures that are put in to save Vosso salmon will have transfer value to a number of other wild salmon originate in Norway, which also is in a critical situation.
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Old 8th February 2010, 17:21
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Default Hope for the Vosso through stakeholders working together

http://www.salmobreed.no/uploads/R&D/Vossolaksen.pdf (Norwegian): Summary in English here:


INITIATIVE TO RESTORE THE GENUINE VOSSO SALMON STOCK
"Vossolauget" was founded in 2008 with the objective to rescue the unique but endangered local
stock of Atlantic salmon in the river Vosso. The first year of operation is now successfully completed.
Combined efforts have enabled us to take this project from a bright idea only into a path-breaking
reality. This has been possible not only by the initiative and resources made available by the salmon
farmers, but also because our vision was shared by the river owners, local community, municipal and
governmental authorities, sponsors and volunteers.

The competency and technology which has made Norway world leading within industrial salmon
farming now returns to where it all started. The industry arose when knowledge of reproduction and
cultivation from the rivers was combined with coastal expertise on how to use fishing nets. Nearly
fifty years has gone by since the birth of the industry. Genes from The Vosso salmon are still well
represented in the farmed stocks. Now it is time to help the endangered original in Vosso back to its
old strength. The project builds on research carried out over several years about the Vosso strain, to
understand why it came close to extinction, and evaluate risk factors and available measures to
enhance the population. Vossolauget is scaling up and fortifying the research results which have
produced the best returns so far. This is the cultivation of full grown smolt in the river system
combined with open tank-based hauling of the smolt though its natural route of migration followed by
near-coast release. Our first production year resulted in the release of 86 000 smolt of which 60 000
were grown in the water system and the remaining came from the Vosso-hatchery. Having completed
a successful first year of operation, the plan is now to increase production to 150 000 fish annually the
next four years. The Vosso-hatchery has been expanded to meet this plan. We are confident of the
smolt quality and that the fish were successfully released into the ocean. Small scale releases have
resulted in Due to uncertainty abut survival in the ocean we expect a meagre 1-3% return over next
three year period; 2010-2012.

"Vossolauget" would like to express our gratitude towards all collaborating partners, sponsors and
volunteers for their contribution so far. We are convinced they share our hope that in a few years time
we can again start angling for our unique strain of salmon in Vosso!

From the Marine Harvest web site

Five-year project
- The process this far has been very successful. The egg material comes from the genuine stock of Vossolaks which is kept at the gene bank in Eidfjord. The smolt we have produced are of good quality and are just like a wild salmon, comments Marine Harvest Norway’s technology director and chairman of the project, Cato Lyngøy.

Key elements of the project are increasing hatchery capacity and establishing net pen-based farming in the river system. It is a five year project which this year released 50,000 smolt and expects to release another 150 000 per year during 2010-2012.

Sufficient to maintain stable population
Approximately 2–4% of the released smolt are expected to return as adults in 2010 and later years. Environmental scientists have now indicated the reproductive capacity of the river as sufficient to maintaining a stable population, when the numbers have been rebuilt.

The project is unique in having brought together fish farmers, wild fish interest groups, river owners and local communities. Marine Harvest is committed to provide NOK 350,000 a year until 2012 and made an additional start-up donation of NOK 450,000.
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Old 26th February 2010, 18:38
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Hi

And thanks for the replies, great reading, it is a great shame and worrying trend, I assume this is what all the fuss is about off the British Columbia Coast, you know if an angler were to kill a breed of salmon which was illegal to kill , maybe he could not identify the species (read a similar post in CA forum) he would probably be proscuted and these farming a**holes are nothing more than destroying our wild stocks. I simply just shake my head in disgust.

I would be interested in any societies trying to tackle the end of fish farming and would kindly donate, any info would be appreciated.

Mitch.
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Old 3rd March 2010, 10:40
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Great support!

Suggest you contact the Green Warriors:

Norway Green Warriors campaign against salmon farming
Regards


Colin
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Old 3rd March 2010, 16:38
 
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They are now stepping up production here in NL...thankfully they are only in one of our 1000s of Bays...sickening.
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Old 8th March 2010, 18:48
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I used to say I am amazed governments etc allow fish farming in the first place, but I forgot, it might have something to do with money, money, money, as we know the root of all evil.
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