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


Farmed oysters. (Photo Credit: Fisheries & Aquaculture)

A revolutionary finding could benefit oyster production

Click on the flag for more information about United States UNITED STATES
Monday, June 30, 2014, 03:50 (GMT + 9)

A new, environmentally friendly technology intended to increase yields at oyster hatcheries has been developed by National Oceanic and Atmospheric Administration (NOAA) Fisheries scientists.

On analysing the role of probiotics in oysters, the team of scientists found out that the Vibrio bacteria OY15 works by stimulating the specimen’s immune system. However, they initially expected to see probiotics working by competitive exclusion of potential pathogens.

Therefore, the researchers concluded that the OY15 genome revealed that it lacks the genes that cause pathogenicity.

"We think it's probably a harmless former pathogen that nevertheless is recognized by the shellfish immune system as a potential threat, and that up-regulates the immune system," pointed out Gary Wikfors, a NOAA Fisheries scientist involved in the project.

To find probiotic strains, the scientists collected bacteria that occur naturally in the digestive glands of healthy adult Eastern oysters. They then grew those candidate strains in petri dishes along with a pathogenic strain of Vibrio bacteria that had caused a disease outbreak a few years before. The strains that were most effective at inhibiting growth of the pathogen in a petri dish then advanced to the next stage of testing: the guts of live oyster larvae.

The 15th strain they tested, dubbed OY15 by scientists, was the most effective. "We see higher survival of larvae that have been given OY15," said Diane Kapareiko, the NOAA Fisheries scientist who led the effort. "Better survival means more seed to sell."

Although probiotics are already used at salmon and shrimp farms, this is the first time they have been developed for bivalve shellfish and it is highly welcomed by oyster seed producers.

At the Oyster Seed Holding Company in Matthews, Virginia, near the mouth of the Chesapeake Bay, oyster seed is produced and the sold to East Coast oyster farmers. Oyster seed are 2-week-old oysters fed on a a healthy diet to make sure it survives. During the cooler months, the firm’s yield is around 40 per cent, but in summer, when bacteria that can harm the delicate larvae proliferate in the warmer water, its yield is half that.

"We're always trying to increase our percentages, and probiotics have a lot of potential," pointed out the hatchery manager Mike Congrove. “Plus it's environmentally friendly."

In some parts of the world, antibiotics are used to control bacterial disease when producing seed at shellfish hatcheries. But antibiotics, which can give rise to resistant strains of pathogens, are not approved for use in growing oysters or other bivalves in the United States.

The scientists involved in the project claimed they are providing a template that someone else can follow for any species of shellfish, anywhere in the world.

This summer, researchers from the University of Rhode Island will conduct field trials of OY15—as well as two other strains they have been developing independently—at commercial and university hatcheries. If all goes well during field trials, oyster probiotics could hit the market in 2 to 3 years.
 


[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United Kingdom
Jan 19, 02:20 (GMT + 9):
Parliamentary committee urges MSC to review its standards on sustainable fishing
Ghana
Jan 19, 01:30 (GMT + 9):
Improving transparency in fishing industry is essential to eradicate illegal activities
Spain
Jan 19, 01:20 (GMT + 9):
Galicia will commission another report to analyze effects of 'Brexit' negotiation in fisheries sector
Spain
Jan 19, 00:10 (GMT + 9):
Minister says Spain is ready to minimize 'Brexit' impact in fisheries sector
Australia
Jan 18, 23:50 (GMT + 9):
Austral Fisheries will use revolutionary blockchain platform to track its toothfish
Argentina
Jan 18, 23:10 (GMT + 9):
Global change could affect hake fisheries in Tierra del Fuego
United States
Jan 18, 23:00 (GMT + 9):
Four companies participate in 'fish-free' fish oil challenge
Mexico
Jan 18, 22:00 (GMT + 9):
Tuna fishing season begins in the Pacific Ocean
Peru
Jan 18, 21:30 (GMT + 9):
Jack mackerel and mackerel catch limits set for 2019
Ecuador
Jan 18, 20:30 (GMT + 9):
In search of greater power within the tuna market
United States
Jan 18, 02:50 (GMT + 9):
Lobster processor to close its plant in Connecticut
Mexico
Jan 18, 02:30 (GMT + 9):
Creation of state fisheries and aquaculture councils promoted
Australia
Jan 18, 02:30 (GMT + 9):
Threats to access small resources concern the sector
Peru
Jan 18, 01:30 (GMT + 9):
Camposol's subsidiary to strengthen shrimp production
New Zealand
Jan 18, 01:20 (GMT + 9):
IN BRIEF - What does marine heatwave mean for future of New Zealand's fish?



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Parliamentary committee urges MSC to review its standards on sustainable fishing
United Kingdom A UK parliamentary committee has called on the Marine Stewardship Council to address concerns about the organisation's standard for sustainable fishing in the world's oceans.
Threats to access small resources concern the sector
Australia Seafood Industry Australia has announced a national crisis meeting in Western Australia in February, to discuss the ongoing threats to resource access and property rights occurring across the nation.
Lobster processor to close its plant in Connecticut
United States Garbo Lobster, a company that has been operating for more than three decades in southeastern Connecticut and which supplies lobsters around the world, will close its Groton headquarters.
Sri Lankan blue crab recommended as 'good alternative'
Sri Lanka The Monterey Bay Aquarium’s Seafood Watch program has released new recommendations for several seafood products, including a "Good Alternative" recommendation for blue crab from Sri Lanka.
 
Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
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
Sea Harvest Corporation (PTY) Ltd. - Group Headquarters
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
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.
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
Marona S.A.
Mowi ASA (formerly 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. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
Mitsubishi Corporation Marine Products Depts. D.Team
CJ Corporation  - Group Headquarters
Greenpeace International - The Netherlands | Headquarters
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
NOREBO Group (former Ocean Trawlers Group)
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation - Headquarters
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 - 2019 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER