Lice-eating wrasse to be put alongside salmon in aquaculture cages 
NO Source: fis 1/27/2011
Lice-eating wrasse to be put alongside salmon in aquaculture cages
An environmentally-friendly way of reducing the amount of salmon lice in Norwegian aquaculture is putting lice-eating wrasse together with the salmon. A new large-scale research project will prepare for commercial aquaculture, in order to ensure an adequate supply of the lice eaters.

When it comes to eating salmon lice from large salmon, the Ballan wrasse (Labrus bergylta) is the most efficient wrasse, and it also gathers lice at lower temperatures than other species.

A total of 2 to 5 per cent of wrasse is needed in the sea cages in order to delouse the salmon, or in other words a cage containing 100,000 salmon requires 2000 to 5000 wrasse. The largest number of salmon lice found in the stomach of a single Ballan wrasse is 300, while the average is 70.
 

The Fishery and Aquaculture Industry Research Fund (FHF) is behind this heavy investment, which stretches over a three-year period and has a budget of around NOK 26 million (USD 4.5 million).

The objective is to develop the knowledge and experience that is necessary to attain a stable and predictable commercial production of the Ballan wrasse.

The wrasse are transferred to the sea cages and eat the sea lice on the farmed salmon, avoiding the need to use chemicals to delouse the salmon.

"The effort which is now commencing is unique in both a Norwegian and global context. Norway is the only salmon-producing country that is using wrasse on a large scale to combat salmon lice," says the Managing Director of the research fund, Arne E. Karlsen.

Until now mainly wild-captured wrasse has been used. However, there is a limited supply of wrasse in the wild, and an increase in the catch can pose a threat to the wild fish stocks.

The goal of the project is to cover at least 25 per cent of the requirements with farmed wrasse by 2013.

 
Salmon, Atlantic Continue...

News Id SourceStampcountry
3976Kid brother snitches to game wardens about illegal fish, and other Texas game warden storieschron2021-05-24US
3977Despite huge salmon forecasts, terrible 2009 return haunts B.C.CTV News2014-06-29CA
3978GW Fins chef Tenney Flynn and others take aim at an invasive speciesnola2014-07-24US
3979Manitoba fishery earns rare status in Western HemisphereCBC News2014-07-24CA
3980Can Drones Fight Illegal "Pirate" Fishing?National Geographic2014-07-18BZ
3981Atlantic Salmon Show Capacity To Adapt To Warmer WatersUnderwatertimes2014-07-17CA
3982Fisherman Describes Reeling In 482-Pound Halibuteast idaho news2014-07-14US
3983Smiling with the fishes! Cheeky parrotfish photobombs diver's snapexpress2014-07-07US
3984Record-Breaking Red Snapper Caught Off the Coast of Texasabc news2014-07-01US
3985Fish Can Remember For Up To 12 Daysunderwatertimes2014-07-01CA
3986New 'Swiss Army knife' cleans up water pollutioneurekalert2021-05-31US
3987Cornell researchers net largest fish ever recorded in Oneida Lakewktv2021-05-21US
3988Massive bass fish caught off Hicks Bay, East Capenzherald2021-05-21NZ
3989‘Like Some Sea Creature From The Deep’: Vampire Fish Making Comeback To American Riverbaltimore2021-05-20US
3990Salmon Migrate By Truck During California Droughtsacramento2014-06-15US
3991Cod Bones Reveal 13th Century Origin Of Global Fish Tradeunderwatertimes2014-05-27UK
3992Fishermen spend TWO HOURS reeling in 'once in a lifetime' 500-pound sawfish in Floridadailymail2014-05-26UK
3993Rare, mysterious deep sea fish washes ashore along NC coastmyfox82016-05-16US
3994Farmed fish the source of virus spread among wild salmon, B.C. study suggestsCBC News2021-05-26CA
3995So Now You Know The Whole Sturgeon Storyfishncanada2021-04-22CA
3996Plastics and toxic chemicals are killing fish — and poisoning usnational observer2021-04-27CA
3997Battle over caviar production rages in Missouri, Oklahomaaljazeera2014-05-08UK
3998Catch of a lifetime for Kitcherdailyecho2014-04-30UK
3999Fishy chat-up lines and underwater love among Arctic charirishtimes2014-05-01IR
4000That Redfish Ate What?sportfishingmag2014-04-30US

220 221 222 159 of [223 - pages.]