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


The populations of mussels, salmon and sea lice will be monitored for several years. (Photo: Stock File/FIS)

Sea lice pests could be treated with mussels: study

Click on the flag for more information about United States UNITED STATES
Thursday, June 30, 2011, 23:30 (GMT + 9)

University of Maine researchers have demonstrated that the blue mussel can eat larvae of the parasitic sea louse that has been decimating farmed finfish stocks. The results could be highly useful for Maine’s farmed salmon industry.

The findings were published recently in the journal Aquaculture. If further analysis in the field supports these first findings, mussels could be used as another disease management strategy for weakening the infectious pressure of sea lice in finfish farms, as the pest has become resistant to drugs.

The paper could also be good news for Maine’s development of integrated multi-trophic aquaculture (IMTA), an alternative to the standard mono-culture aquaculture. IMTA lowers the environmental impacts of commercial aquaculture by combining fed species, such as salmon, with extractive species, such as mussels.

“Extractive species are filter-feeding so they’re taking in all the phytoplankton and zooplankton and whatever’s in the water column, but they’re also taking in excess fish food and feces and removing all those organics from the water,” postdoctoral researcher Sally Molloy, a microbiologist in UMaine’s School of Marine Sciences explicated. 

“The idea is hopefully IMTA practices reduce the amount of nutrients that are going into the ecosystem because of the fish farm. It’s sort of a greener version of farming,” she said.

The research into this and other IMTA-related work is being funded by USD 1.6 million in grants from organisations including Maine Sea Grant, the Maine Technology Institute, the National Oceanographic and Atmospheric Administration, and the Maine Aquaculture Innovation Center.

The sea louse feeds on the skin and tissue of its host. Most research focuses on the stages when it has already infected its host. 

UMaine researchers have concentrated on combating the sea louse in its larval stage.

The researchers gathered sea lice egg strings from an infected commercial salmon farm. The eggs hatched and were reared to the copepodid stage. 

Meanwhile, the team got mussels from a local commercial mussel farmer and exposed them to the sea lice copepods for 30 or 60 minutes, after which the contents of the mussels’ stomachs were removed for DNA studies which showed that the mussels had ingested the sea lice copepodids.

The UMaine team later this year will insert a mussel raft into the waters of a salmon farm on the Maine coast to determine if their results hold up on a larger scale. The populations of mussels, salmon and sea lice will be monitored for several years to determine how they affect each other.

Ian Bricknell, professor at UMaine’s School of Marine Sciences, said seaweed could be farmed in a larger area surrounding the mussel rafts to round out the site’s productivity. Seaweed growth is fortified by nitrogen and phosphates found in salmon effluent, Bangor Daily News reports. 

By Natalia Real


editorial@fis.com


www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Brazil
Oct 22, 04:20 (GMT + 9):
Environmental licenses and financing hinder shrimp industry
Norway
Oct 22, 03:30 (GMT + 9):
Mitsubishi becomes Cermaq’s new owner
United States
Oct 22, 03:00 (GMT + 9):
IN BRIEF - Maine shellfish dealer to be sentenced for illegal money transactions related to unauthorized purchases of lobsters
Canada
Oct 22, 03:00 (GMT + 9):
IN BRIEF - Acasti Announces Grant of Stock Options
Canada
Oct 22, 03:00 (GMT + 9):
IN BRIEF - Neptune and BlueOcean Sign Licensing Agreement
United Kingdom
Oct 22, 02:50 (GMT + 9):
IN BRIEF - John West and Princes accused of backtracking on tuna commitments
United Kingdom
Oct 22, 02:50 (GMT + 9):
IN BRIEF - South Yorkshire producer recalls salmon burgers
Sri Lanka
Oct 22, 02:50 (GMT + 9):
IN BRIEF - UK seafood importers criticize EU ban on Sri Lanka, willing to help government to improve the industry
Spain
Oct 22, 02:50 (GMT + 9):
Frinsa becomes first Spanish canning firm in joining SFP
United States
Oct 22, 02:40 (GMT + 9):
IN BRIEF - Predatory Fish Have Declined by Two Thirds in the Last Century
Canada
Oct 22, 02:00 (GMT + 9):
Chinese group acquires lobster plant in Nova Scotia
Viet Nam
Oct 22, 01:20 (GMT + 9):
Vietnamese shrimp farms first ASC certified in Asia
Portugal
Oct 21, 23:50 (GMT + 9):
Parliament supports negotiation of more licenses for tuna traps
United States
Oct 21, 23:30 (GMT + 9):
Barley protein concentrate trialed for trout feed
European Union
Oct 21, 22:50 (GMT + 9):
Regional discard plans adopted



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Seafood labelling campaign raises controversial views
Australia Several conservationists, scientists, fishermen and fish-lovers have teamed up to urge Australian authorities to follow the EU on seafood labelling laws whereas certain caterers and importers question the move.
DiCaprio Foundation donates USD 2 million to combat overfishing, ocean conservation
United States The Leonardo DiCaprio Foundation provided USD 2 million to Oceans 5, an international funders’ collaborative dedicated to stopping overfishing and establishing marine reserves in the world’s five oceans.
Conservationists condemn Malta’s request to raise bluefin tuna quota
Malta Malta's government’s intention to be granted bluefin tuna quota increase has not been welcomed by conservation organization WWF and by the coalition of Maltese NGOs Fish4tomorrow.
Rapid shellfish toxins test may be soon available
Australia A new project to develop a rapid shellfish toxin screen test is underway at the University of Tasmania.
 
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 (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Pescanova, S.A. - Group Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Limited
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 ehf - 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-
Grupo Calvo - Luis Calvo Sanz, S.A. (Group 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 - 2014 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER