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
Oct 31, 04:00 (GMT + 9):
Lobster fishermen will not vote next season
Spain
Oct 31, 03:20 (GMT + 9):
Canning association grants cooperation to Brazil
United Kingdom
Oct 31, 02:40 (GMT + 9):
Seafish launches guide on new EU seafood consumer legislation
Canada
Oct 31, 02:30 (GMT + 9):
IN BRIEF - Neptune Receives TSX Approval For Normal Course Issuer Bid
United States
Oct 31, 02:30 (GMT + 9):
IN BRIEF - Despite good wages, lobster processing is a hard sell
Norway
Oct 31, 02:20 (GMT + 9):
IN BRIEF - Mitsubishi gets 92 pct of Norway's Cermaq in bid
Iceland
Oct 31, 02:20 (GMT + 9):
IN BRIEF - Total value of catch decreased by 13.1%
United Kingdom
Oct 31, 02:20 (GMT + 9):
IN BRIEF - Scottish mackerel splashed across Japan
United States
Oct 31, 02:10 (GMT + 9):
IN BRIEF - Down East aquaculture research institute gets USD 2 million grant
India
Oct 31, 02:00 (GMT + 9):
IN BRIEF - Nabard rolls out INR 100 000 000 scheme for fish farming
New Zealand
Oct 31, 02:00 (GMT + 9):
IN BRIEF - Pledge signed to protect threatened NZ bird
United States
Oct 31, 01:50 (GMT + 9):
IN BRIEF - Scientists call for second straight season without shrimp fishing
Australia
Oct 31, 01:50 (GMT + 9):
IN BRIEF - The latest on the status of Australia’s fisheries
Brazil
Oct 31, 01:40 (GMT + 9):
885 areas to be granted for marine aquaculture in Sergipe
Iceland
Oct 31, 01:00 (GMT + 9):
IN BRIEF - Icelandic Cod fishery re-certified to IRFM Standard



Lenguaje
FEATURED EVENTS
  
TOP STORIES
FDA investigation reveals limited seafood mislabeling, NFI highlights
United States The FDA has released the results of a two year investigation into seafood labeling that found 85 per cent of the seafood it tested was properly labeled.
Research detects antibiotics traces in commercial seafood
United States Two scientists have carried out a new study to examine the persistence of antibiotics in seafood raised by aquaculture and have found traces of five of them in commercial species purchased in the country.
Bumble Bee Foods’ lawsuit sent to Superior Court
United States A class-action suit filed in 2012 accusing Bumble Bee Foods of mislabeling tuna and related products was not dismissed at federal court but the lawsuit was remanded to Superior Court.
John West denies Greenpeace’s accusations
United Kingdom The canning firm John West group denies the fishing boat recently broadcast in a video by Greenpeace to show the firm’s alleged unsustainable practices belongs to them or their parent company, MW Brands.
 
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