Fly Fishing Forums

Go Back   Fly Fishing Forums > Newsdesk > Fly Fishing News
Forums Register Blogs FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

Like Tree5Likes
  • 4 Post By 3lbgrayling
  • 1 Post By easker1

Share LinkBack Thread Tools Display Modes
Old 21-04-2017, 11:20 AM
Join Date: Jun 2007
Posts: 658
Fish & Fly Team is on a distinguished road
Default Atlantic Salmon Farms Shift to Open Seas, Trying to Shake Off Lice

From Fish&Fly :

Source: Associated Press via

OSLO — Atlantic salmon farming companies are designing huge pens to raise fish in the open seas in a radical shift from calm coastal waters where marine lice have slowed growth of the billion-dollar industry.

The drive for new designs by Norway, producer of 54 percent of all farmed Atlantic salmon in 2016, will have to cope with ocean storms that can rip cages and free thousands of fish.

Escapees disrupt natural stocks by breeding with wild cousins.

The industry has to develop and to solve the environmental challenges it has, especially linked to salmon lice,” Norwegian Fisheries Minister Per Sandberg told Reuters, referring to parasites that often spread infections resistant to antibiotics.

One in five salmon farmed in Norway dies before reaching maturity, partly due to tiny blood-sucking lice that latch onto the outside of the pink fish.

Lice, also a problem in other countries, tend to concentrate in the more stagnant waters of Norway’s bays and fjords where farms are now based. A shift offshore would expose farms to ocean currents that should help to sweep away the lice larvae.

The Norwegian Directorate of Fisheries is seeking innovative fish farm designs, both for offshore and coastal waters, in a two-year drive open until November 2017. So far it has approved a handful and is reviewing about 40 others.

Many borrow ideas from the offshore oil and gas industry.

The lure of offshore pens is that they would open almost unlimited areas for fish farms beyond bays and fjords, attracting investors and transforming the global aquaculture industry.

Norway produced 1.1 million tons of salmon in 2016, more than double the output of number two producer Chile, and earned $7.6 billion in exports. Smaller producers include Britain, the Faroe Islands and Canada.

But Norway’s production, by companies including Marine Harvest, SalMar and Leroy Seafood, has been little changed since 2012 due to lack of space and disease, even as rising demand has pushed prices to record highs.

Storm risks

We’ll take the project that works best, has no salmon lice, the lowest cost, no escapes and is industrial,” Marine Harvest’s chief executive officer Alf-Helge Aarskog told Reuters of a range of designs the company has proposed.

Nets in coastal farms sometimes tear in storms, harming wild stocks from Scotland’s Spey River to Norway’s Alta River, and offshore farms will be exposed to far stronger winds and waves. Last year, 126,000 salmon broke out of Norwegian farms.

Escaped fish mix with the wild salmon – that creates problems with genetics,” said Ingrid Lomelde, of the WWF Norway Farmed fish are bred to grow fast and fatter than their sleek wild cousins. Interbreeding could produce fish too weak, for example, to leap up waterfalls to reach spawning grounds.

Among approved designs, SalMar is building what it calls the “world’s first offshore fish farm” to start in late 2017 — a floating circular construction 110 metres (360 ft) across that looks like a drilling rig, apart from huge nets dangling below.

The 700 million Norwegian crown ($82 million) yellow and white steel construction is being built at a Chinese yard, and will be big enough to raise more than a million salmon.

We’re starting to install the anchoring systems,” off the coast of mid-Norway, chief financial officer Trond Tuvstein said. “No one wants escapes,” he said.

In Chile, Felipe Sandoval, head of industry group SalmonChile, said the government wanted more research into farming in more exposed and offshore areas. “We will have to wait a bit to see how this takes off,” he said.

Most approved designs in Norway are still on the drawing board, such as a sealed 44-metre (144.36 ft) tall egg-shaped tank by Marine Harvest where the fish swim inside in seawater filtered to keep out lice, or a 400-metre long farm by Nordlaks shaped like a supertanker.


Marine Harvest hopes to start building an “Egg” prototype in mid-2017, CEO Aarskog said. The sealed design would be suited for calm waters in fjords and is favored by environmentalists and river owners as a way of isolating any disease.

If successful, “the technologies will allow aquaculture in more exposed areas globally” including for other types of farmed fish such as sea bass or bream, said Tore Toenseth, an analyst at SpareBank 1 Markets in Oslo.

Huge new cages able to withstand storms could be used anywhere, from Japan to the United States, he said.

But river owners say not enough is done to protect wild stocks by the expansion of farming.

It’s a very vulnerable system,” said Erik Sterud, of the river owners’ association Norske Lakseelver, who estimates there are now just 500,000 wild salmon off Norway against half a billion farmed fish.

Companies are willing to invest hundreds of millions of crowns in the new technologies partly because Norway will award licenses to operate the new fish farms, almost for free.

Source Article...
Reply With Quote
Old 21-04-2017, 11:35 AM
Join Date: May 2016
Location: Sheffield
Posts: 4,485
bumble54 will become famous soon enough
Default Re: Atlantic Salmon Farms Shift to Open Seas, Trying to Shake Off Lice

They want something that will withstand just about everything?, they don't want escapes?. No matter what is finally built, they won't defeat mother nature, Titanic springs to mind, so expect escapes anyway.
Reply With Quote
Old 21-04-2017, 11:38 AM
3lbgrayling's Avatar

Join Date: May 2006
Location: Central Scotland
Posts: 28,030
3lbgrayling has a reputation beyond repute3lbgrayling has a reputation beyond repute3lbgrayling has a reputation beyond repute3lbgrayling has a reputation beyond repute3lbgrayling has a reputation beyond repute3lbgrayling has a reputation beyond repute
Default Re: Atlantic Salmon Farms Shift to Open Seas, Trying to Shake Off Lice

I'll not hold my breath.
I also wonder why the fishfarmers don't ''as standard'' Triploid the eggs.thereby doing away with a major problem of interbreeding with wild fish.

easker1, munko, bumble54 and 1 others like this.
The Fishermans Friend is the Flirty Fly,Fickle Food for Fleeting Fish.
Reply With Quote
Old 21-04-2017, 03:32 PM
Join Date: Nov 2010
Location: Highlands
Posts: 4,126
easker1 is on a distinguished road
Default Re: Atlantic Salmon Farms Shift to Open Seas, Trying to Shake Off Lice

Aye Dont Hold your breath, it will be all down to the money , easker1
munko likes this.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sea trout near salmon farms more infested with sea lice Editor Salmon Fishing 11 22-01-2017 03:55 PM
Irish Marine Institute questioned over scientific paper on salmon farms and sea lice Editor Fly Fishing News 3 16-07-2013 01:31 PM
BC Salmon Farms Must Release Sea Lice Data salmonthink Salmon Fishing 0 10-12-2010 05:54 PM
Atlantic Salmon Trust wants new sea lice approach to save salmon SalmonAtlas Salmon Fishing 0 13-08-2010 04:30 PM
Open letter to King of Norway re Salmon Farms etc. FlyForumAdmin Ear to the Ground 2 16-09-2009 03:23 AM

All times are GMT. The time now is 07:29 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.1
2006-2017 Fish&Fly Ltd