Welcome to FIS   Sponsored By
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
[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United States
Jan 24, 15:00 (GMT + 9):
IN BRIEF - Shrimp Trawling Proposal Protested By Local Fishermen
Sri Lanka
Jan 24, 15:00 (GMT + 9):
IN BRIEF - Earns a profit of Rs 1200 million by fish exports last year
India
Jan 24, 14:30 (GMT + 9):
IN BRIEF - Seafood Market to Grow at a CAGR Over 3% from 2016 to 2022
United States
Jan 24, 14:20 (GMT + 9):
IN BRIEF - What can mackerel and an 1815 volcanic eruption say about climate change?
United States
Jan 24, 14:00 (GMT + 9):
IN BRIEF - Salmon is about to get a lot more expensive
United Kingdom
Jan 24, 14:00 (GMT + 9):
IN BRIEF - Why oysters, mussels and clams could hold the key to more ethic fish farming
United Kingdom
Jan 24, 10:00 (GMT + 9):
IN BRIEF - Issues with FFDR in assessing aquaculture
United States
Jan 24, 10:00 (GMT + 9):
IN BRIEF - Strong harvests, more oversight marked 2016 groundfish fisheries
Chile
Jan 24, 02:50 (GMT + 9):
Alliance of salmon companies doubles shipments to China in two years
Faroe Islands
Jan 24, 02:10 (GMT + 9):
New suspicion of pathogenic ISA virus at Bakkafrost site
Chile
Jan 24, 01:50 (GMT + 9):
Supreme Court rejects Bahia Coronel complaint
Thailand
Jan 24, 01:10 (GMT + 9):
Sea Value negotiates purchase of French tuna processing plant
Chile
Jan 23, 23:50 (GMT + 9):
Artisanal fishermen deem Fisheries Undersecretary’s exit 'a big step'
Thailand
Jan 23, 23:50 (GMT + 9):
Thai Union gets USD 689 million to finance investment in Red Lobster
Mexico
Jan 23, 22:40 (GMT + 9):
Sagarpa will prioritize attention to women producers from rural and fishing areas



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Sweden considers other measures to address the issue of American lobsters
United States The Swedish government is working on a new proposal to address the problem of the appearance of American lobsters in Swedish waters, in the face of the European Union's refusal to impose a ban on the importation of these crustaceans from the US and Canada.
Drugs discovered on board Greenlandic trawler
Iceland A fourth crew member of fishing vessel Polar Nanoq, which sails under the flag of Greenland, was arrested in the Icelandic port of Hafnarfjordur, after the police discovered a large quantity of hashish aboard.
Brussels validates Spanish fisheries control system
Spain The European Commission has notified Spain that it considers finalized the implementation of the action plan to remedy deficiencies in the Spanish fisheries control system, which was established by Decision of the EC on 30 July 2012.
Seafood company launches e-commerce site
India Seafood company WestCoast Group has launched a fish e-commerce portal through which it will deliver quality products to customers living in Mumbai.
 
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 - 2017 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER