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


The development of transgenic rainbow trout may revolutionise aquaculture. (Photo: University of Rhode Island )

Transgenic rainbow trout may revolutionize aquaculture

Click on the flag for more information about United States UNITED STATES
Friday, March 12, 2010, 15:00 (GMT + 9)

A University of Rhode Island scientist has developed transgenic rainbow trout with enhanced muscle growth, which has yielded fish with what have been described as six-pack abs and muscular shoulders that could revolutionise the commercial aquaculture industry.

Terry Bradley, a professor of fisheries and aquaculture, said that his 10-year research into the inhibition of myostatin, a protein that slows muscle growth, has obtained "stunning results" in the last two years, with trout growing 15 to 20 per cent more muscle mass than standard fish, according to the University of Rhode Island (URI).

"Belgian blue cattle have a natural mutation in myostatin causing a 20 to 25 per cent increase in muscle mass, and mice overexpressing myostatin exhibit a two-fold increase in skeletal muscle mass," said Bradley.

Bradley and his team spent 500 hours injecting 20,000 rainbow trout eggs with DNA types designed to inhibit myostatin. Of the eggs that hatched, 300 carried the gene that led to increased muscle growth. After two years, most fish had the "six-pack ab" effect, even though fish lack standard abdominal muscles. They also have increased musculature throughout.

Studies are under way to determine whether the fish also grow at a faster.

">

According to the professor, who also studies salmon, flounder and tuna, the number of muscle fibres in mammals is limited after birth, but in fish, muscle fibre numbers increase throughout their lifespan. Since inhibition of myostatin increases the numbers of muscle fibres, it was not known whether inhibiting myostatin would cause an increase in muscle growth in fish.

"The results have significant implications for commercial aquaculture and provide completely novel information on the mechanisms of fish growth. The results also allow for comparisons between the mechanisms of growth of muscle in mammals versus fish, and it could shed light on muscle wasting diseases in humans," Bradley said.

Some 500,000 metric tonnes of rainbow trout are raised every year in aquaculture facilities across the United States and Europe. In the US, some 1,000 trout farms produce around USD 80 million worth of trout annually.

Assuming Bradley's transgenic fish meet the regulations, it could provide a boost to the industry by enabling farmers to grow larger fish without increasing the amount of feed.

"One of the advantages of this approach is that the modified genes introduced into the fish use the same mechanism and cause the same type of effect that occurs naturally in Belgian blue cattle and other 'double muscled' animals.”

While the trout may look like bodybuilders, Bradley said that they exhibit normal behaviour. He will continue to study the fish in order to learn if the new gene affects other genes, and to determine if new practices will aid in the raising of the trout.

By Michel Loubet
editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Canada
Jun 30, 00:20 (GMT + 9):
Operation Driftnet concludes successfully in the North Pacific Ocean
European Union
Jun 29, 23:50 (GMT + 9):
WECAFC urges new RFMO for Western Central Atlantic
Worldwide
Jun 29, 23:10 (GMT + 9):
Better tuna fishery management deemed on track, ISSF
Peru
Jun 29, 22:10 (GMT + 9):
Modern artisanal fish landing facilities inaugurated in Atico
European Union
Jun 29, 21:40 (GMT + 9):
Oceana regrets MEPs reject greater controls for external fleet
Viet Nam
Jun 29, 03:10 (GMT + 9):
IN BRIEF - Vietnam's Agri-Forestry-Fishery Exports Fetch USD 15 Billion
India
Jun 29, 03:10 (GMT + 9):
Brexit generates expectations among Indian seafood export
European Union
Jun 29, 03:00 (GMT + 9):
IN BRIEF - EU referendum result gives real hope for Scotland’s fishing communities
Philippines
Jun 29, 03:00 (GMT + 9):
IN BRIEF - Fisheries breakthrough: Breeding ‘maya-maya’
United States
Jun 29, 03:00 (GMT + 9):
IN BRIEF - Historic New England fishing industry faces warming world
Angola
Jun 29, 03:00 (GMT + 9):
IN BRIEF - Angola, Namibia Sign Documents For Co-operation In Fisheries
Canada
Jun 29, 03:00 (GMT + 9):
IN BRIEF - Could climate change affect your day fishing? Ontario researcher presents findings in Washington D.C.
China
Jun 29, 03:00 (GMT + 9):
IN BRIEF - Experts suggest 10-year fishing ban in the Yangtze River
United States
Jun 29, 03:00 (GMT + 9):
IN BRIEF - Consumption of omega-3s linked to lower risk of fatal heart disease
United Kingdom
Jun 29, 02:10 (GMT + 9):
British fishermen may face further trouble after Brexit



Lenguaje
FEATURED EVENTS
  
TOP STORIES
First ambitious ocean-cleansing project presented
Netherlands At a port in The Hague, Dutch environment minister has launched the biggest prototype clean-up boom in an attempt to clear the Pacific of its plastic debris.
Brexit victory causes bitter-sweet reactions
United Kingdom The result of the referendum vote for the UK to leave the EU has been received with mixed feelings of 'uncertainty' for some representatives of the fishing sector and 'excitement' for Brexiting fishermen.
New fisheries database may contribute to better fishery management
Worldwide A publicly accessible fisheries database that builds on the FAO statistics has been created, covering the fisheries of all maritime countries and territories of the world, from 1950 to 2010, and being regularly updated.
Grant regulation approved for market development and seafood promotion campaigns
Spain The Cabinet has approved a proposal of the Ministry of Agriculture, Food and Environment, a Royal Decree establishing the regulatory bases for the allocation, set in a competitive basis, of subsidies to develop new markets and promotion campaigns for fishery and aquaculture products.
 
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