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


Sterile salmon. (Photo Credit: AquaGen)

Sterile-bred salmon can help control interbreeding with wild stocks

Click on the flag for more information about Norway NORWAY
Thursday, August 29, 2013, 02:30 (GMT + 9)

New scientific findings can bring a solution to farmed salmon interbreeding with wild specimens by successfully producing sterile salmon.

Escapee farmed salmon has long posed problems to desperate salmon producers worldwide anxious that they would reproduce with their wild counterparts, thus challenging the genetic purity of the species. Now, thanks to new scientific developments regarding the salmon’s genetic map, all this is about to change.

“If we succeed in producing sterile salmon on an industrial scale, we can substantially reduce the negative genetic impact on wild fish populations,” comments Arne Herre Staveland, who leads farmed fish production at Eide Fjordbruk.  His aquaculture company is one of the six that are participating in a new project to breed genetically modified sterile salmon in captivity.

Triploid salmon can be produced by exposing salmon eggs to high pressure so as to obtain offspring having the usual one set chromosomes from its father but two from its mother, instead of having only one set of chromosomes from each parent. The extra set of chromosomes prevent the development of viable eggs or sperm, thus yielding sterile offspring.

Sterile specimens are bigger and grow faster than their diploid counterparts since they utilize the ATP they would normally use up during reproduction to grow, yielding much bigger offspring.

This technique is not new but it has proven to be quite challenging to breed sterile salmons in large numbers using this method without obtaining fish with genetic malformations. The technique, developed in the 80s and 90s, has already been successfully applied to other salmonids such as the rainbow trout in Tasmania, France and Scotland.  

Now, thanks to new findings in mapping the complete Atlantic salmon (Salmo salar) genome sequence -- as to 2010 there was no genome sequence available for any salmonid --, this previously discouraged technique is seeing new light.

Geir Lasse Taranger of the Institute of Marine Research in Bergen says: “New research indicates that we can prevent the skeletal problems by modifying the diet. Also, new molecular tools help us to better understand how triploid salmon respond to different environmental conditions, which enables us to develop better protocols for how to farm them.”

Triploid salmon are more sensitive to low oxygen concentrations and warmer temperatures. Scientists and producers are now conducting tests on how resistant these triploid fish are to conditions at sea. They also have different nutritional needs than normal salmon as they grow faster, so production methods would also need to be adapted.

The problem is of particular interest to the Norwegian scientific community given the important salmon production in the country, which is reflected in Norway’s gastronomic habits.

The study has been partially funded by the Research Council of Norway in close cooperation with the aquaculture industry.


Related articles:

- NIFES studying sterile salmon health
- Aquaculture researchers work to develop sterile fish

 

By Gabriela Raffaele
editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United States
Feb 13, 07:40 (GMT + 9):
IN BRIEF - USDA FSIS Constituent Update - FSIS to Hold Educational Meetings for Importers on Inspection of Siluriformes Fish
Malaysia
Feb 13, 03:00 (GMT + 9):
Sabah relaxes ban on fish exports
Chile
Feb 13, 02:40 (GMT + 9):
Mussels prompted slight growth of aquaculture production in 2015
United Kingdom
Feb 13, 02:00 (GMT + 9):
IN BRIEF - Orkney allocated GBP 482k for fisheries sector
United States
Feb 13, 02:00 (GMT + 9):
IN BRIEF - Ocean Springs' favorite fisheries biologist gets boat named after him
United Kingdom
Feb 13, 01:50 (GMT + 9):
First North Atlantic blue whiting fisheries to bear MSC ecolabel
Sierra Leone
Feb 13, 01:40 (GMT + 9):
IN BRIEF - World Bank poised to put USD 4m into fisheries sector
United Kingdom
Feb 13, 01:40 (GMT + 9):
IN BRIEF - Romantic, sophisticated… and sustainable: Whole Foods first UK retailer to sell MSC certified oysters
United States
Feb 13, 01:40 (GMT + 9):
IN BRIEF - Fire Forces 42 People To Abandon Ship
Australia
Feb 13, 01:30 (GMT + 9):
IN BRIEF - Pacific fishing observer safety measures to be made mandatory
United States
Feb 13, 01:30 (GMT + 9):
IN BRIEF - Port State Measures Agreement Ratification
Spain
Feb 13, 01:20 (GMT + 9):
IN BRIEF - First octopus fishery achieves MSC certification
Norway
Feb 13, 01:20 (GMT + 9):
IN BRIEF - The fishery robot that became a celebrity
European Union
Feb 13, 01:00 (GMT + 9):
IN BRIEF - Illegal eel: black market continues to taint Europe's eel fishery
Viet Nam
Feb 13, 01:00 (GMT + 9):
IN BRIEF - VASEP: Shrimp export to earn VND 3.3 billion in 2016



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Fisheries specialists recommend a greater role for women in aquaculture
India Fisheries scientists recommended a greater role for women self-help groups to boost aquaculture production in the country.
Educational campaign promotes fish consumption
Peru The Peruvian government has announced the launch of a new campaign under the national programme "Let’s eat fish" in order to help reduce levels of overweight and obesity among the Peruvian population.
Harvest strategy can maximise benefits from skipjack tuna
Maldives The Government of the Maldives and the International Pole & Line Foundation brought more than 50 fisheries officials and experts to the Maldives last week to discuss the management of the Indian Ocean’s tuna stocks and to align on an agreed proposal for the implementation of robust harvest control rules in the region.
Ship wanted for toothfish poaching finally caught
Senegal Senegalese government authorities have arrested the Kunlun, a fishing vessel accused of toothfish illegally fishing, which was wanted by the international community.
 
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