Welcome to FIS   Sponsored By
United States
Subscribe to FIS | Register with FIS | Advertise with FIS | Newsletter | About FIS | Contact us
   


The average amount of salmon lice found in the stomach of a Ballan wrasse is 70. (Photo: Havforskningsinstituttet)

Lice-eating wrasse to be put alongside salmon in aquaculture cages

Click on the flag for more information about Norway NORWAY
Thursday, January 27, 2011, 15:00 (GMT + 9)

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.

This project involves the leading industry actors and research institutions in Norway. Nofima is participating along with SINTEF Fisheries and Aquaculture, the Institute of Marine Research and the Norwegian University of Science and Technology (NTNU).

Roe that has been naturally spawned in the tanks was used during the first phase of wrasse farming. As wrasse roe is surrounded by an adhesive layer, attaining good disinfection is difficult, which is a necessity in order to attain a good survival rate and hatching.

In order to gain better control of the reproduction of wrasse, Nofima will work on methods to strip roe and sperm from the broodstock, methods for fertilisation of roe, and methods to prevent the roe from becoming surrounded by an adhesive layer. Finding good ways of disinfecting the roe will also be important.

In addition, Nofima will work to find out which environments are best for wrasse at various stages of development. This involves, among other factors, which temperatures provide the best roe quality and the best development of wrasse larvae.

Nofima will also work to develop feed and feeding regimes for the earliest stages of life.

The behaviour of young wrasse is also different than for instance young cod and halibut, and scientists will study whether different tank environments can have a positive effect on behaviour.

"Nofima’s interdisciplinary research team will contribute with many years of knowledge and experience in the production of various fish species, as well as experience with optimising environments and feeding in order to attain good fish welfare,” says Nofima Scientist, Synnøve Helland.

“The scientists have considerable experience working to ensure fish farmers attain a predictable production of high quality fish with low rates of deformities. We look forward to working with the industry and the other research environments to contribute to effective and sustainable farming of Ballan wrasse," continues Helland.

Other research on wrasse is also underway, including an existing research project on Ballan wrasse farming that started last year with funding totalling NOK 12 million (USD 2.1 million) from the Research Council of Norway, FHF and industry partners. The new project will be coordinated with the other ongoing research.

"It is estimated that the total Norwegian effort on Ballan wrasse farming, including research and industrial investments, is in the vicinity of NOK 100 million (USD 17.4 million)," says R & D Director at FHF, Kjell Maroni.

Four commercial fish farms for Ballan wrasse are currently under development. The owners include Marine Harvest, Salmar, Nova Sea, Midt-Norsk Havbruk, Sinkaberg Hansen, Lerøy Seafood Group, Bremnes Seashore and Grieg Seafood.

editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Peru
Jul 25, 21:40 (GMT + 9):
Anchovy fishing suspended for five days
Viet Nam
Jul 25, 09:10 (GMT + 9):
Officials accused of certifying substandard aquaculture products
Chile
Jul 25, 09:10 (GMT + 9):
Reconstruction plan after earthquake and tsunami reaches 95pc
New Zealand
Jul 25, 09:10 (GMT + 9):
Does oxidized fish oil pose health risks?
Faroe Islands
Jul 25, 09:00 (GMT + 9):
Bakkafrost’s centre ISA virus variant would be nonpathogenic
United States
Jul 23, 04:00 (GMT + 9):
IN BRIEF - Biotech Startup Brings Red Algae-Based Shrimp from Lab to Plate
Canada
Jul 23, 04:00 (GMT + 9):
IN BRIEF - Offshore northern shrimp fishermen won't be compensated for quota cut
Viet Nam
Jul 23, 04:00 (GMT + 9):
IN BRIEF - Officials dismissed for certifying substandard aquaculture products
China
Jul 23, 03:00 (GMT + 9):
IN BRIEF - Chinese research vessel prepares for exploration in sea waters near Papua New Guinea
Faroe Islands
Jul 23, 03:00 (GMT + 9):
IN BRIEF - BAKKAFROST: Acquisition of P/F Faroe Farming approved by the authorities
New Zealand
Jul 23, 03:00 (GMT + 9):
IN BRIEF - Pregnant women told 'don't take fish oil' after 'dramatic' finding
Chile
Jul 22, 23:30 (GMT + 9):
A deputy’s alleged lobby to help companies that financed him revealed
United Kingdom
Jul 22, 23:30 (GMT + 9):
Expert forecasts dark future for North Sea cod and haddock fishing
Germany
Jul 22, 23:00 (GMT + 9):
Cost-efficient microalgae farming method developed
Chile
Jul 22, 22:00 (GMT + 9):
SalmonChile reactivates initiative to help in retraining process



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Qatar Airways launches new freighter services
Qatar Qatar Airways Cargo has launched new freighter services to New York and Halifax, which will handle lobster and other seafood from these two cities to Europe, the Middle East, South and North East Asia via Doha.
Oily fish may lower risk of death in bowel cancer patients
United States New US-based research suggests that daily intake or one or two weekly portions of oily fish by bowel cancer patients might significantly boost their chance of survival.
Reconstruction plan after earthquake and tsunami reaches 95pc
Chile In less than a year after the 8.4 Richter-scale earthquake and subsequent tsunami hitting the Region of Coquimbo and northern central areas of the country, SUBPESCA released a balance of the major reconstruction advances of "Coquimbo Restarts" program.
Officials accused of certifying substandard aquaculture products
Viet Nam Officials from the Centre for Aquaculture Testing were dismissed after an investigation revealed that since 2013 they had forged certificates of aquaculture products, some of which were harmful for consumers’ health.
 
Maruha Nichiro Corporation
Nichirei Corporation -Headquarter-
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation -Wartsila Group Headquarter-
ITOCHU Corporation -Headquarter-
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Nueva Pescanova, S.L. - Group Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
Blue Continent Products (Pty) Ltd - (Oceana Group Limited)
Pesquera San Jose S.A.
Nutreco N.V. - Head Office
CNFC China National Fisheries Corporation - Group Headquarters
W. van der Zwan & Zn. B.V.
SMMI - Sunderland Marine Mutual Insurance Co., Ltd. - Headquarters
Icicle Seafoods Inc. -Headquarter-
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel - Group Headquarters
SalMar ASA - Group Headquarters
Sajo Industries Co., Ltd
Hansung Enterprise Co.,Ltd.
BIM - Irish Sea Fisheries Board (An Bord Iascaigh Mhara)
CEFAS - Centre for Environment, Fisheries & Aquaculture Science
COPEINCA ASA - Corporacion Pesquera Inca S.A.C.
Chun Cheng Fishery Enterprise Pte Ltd.
Food Project (Siam) Co., Ltd.
VASEP - Vietnam Association of Seafood Exporters & Producers
Gomes da Costa
Furuno Electric Co., Ltd. (Headquarters)
NISSUI - Nippon Suisan Kaisha, Ltd. - Group Headquarters
FAO -Food and Agriculture Organization- Fisheries and Aquaculture Department (Headquarter)
Hagoromo Foods Co., Ltd.
Koden Electronics Co., Ltd. (Headquarters)
A.P. Møller - Maersk A/S - Headquarters
BVQI - Bureau Veritas Quality International (Head Office)
UPS - United Parcel Service, Inc. - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Omega Protein Corporation -Headquarter-
Marona S.A.
Marine Harvest ASA - Headquarters
Marubeni Europe Plc -UK-
Findus Ltd
Icom Inc. (Headquarter)
WWF Centroamerica
Oceana Group Limited
The David and Lucile Packard Foundation
Ajinomoto Co., Inc. -Headquarter-
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
Mitsubishi Corporation Marine Products Depts. D.Team
CJ Corporation  -Holding Headquarter-
Greenpeace International - The Netherlands
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
Ocean Trawlers Group - Ocean Trawlers HK Ltd.
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation -Headquarter-
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart / Wal-Mart Stores, Inc. (Supermarket) -Headquarter-
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
INVE Group - Head Office
Marine Stewardship Council - MSC Worldwide Headquarters
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
Morpol ASA - Group Headquarters
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2016 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER