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UNITED STATES: Cause Of EMS Shrimp Disease Identified

UNITED STATES: Cause Of EMS Shrimp Disease Identified | Aquaculture (Global Aqua Link) | Scoop.it

After months of investigation by a research team led by Donald Lighter at the University of Arizona, the elusive pathogen causing early mortality syndrome (EMS), an emerging shrimp disease in Southeast Asia more technically known as acute hepatopancreatic necrosis syndrome (AHPNS), has been identified.

 

The researchers found that EMS is caused by a bacterial agent, which is transmitted orally, colonizes the shrimp gastrointestinal tract and produces a toxin that causes tissue destruction and dysfunction of the shrimp digestive organ known as the hepatopancreas. It does not affect humans.

 

Lightner’s team identified the EMS/AHPNS pathogen as a unique strain of a relatively common bacterium, Vibrio parahaemolyticus, that is infected by a virus known as a phage, which causes it to release a potent toxin. A similar phenomenon occurs in the human disease cholera, where a phage makes the Vibrio cholerae bacterium capable of producing a toxin that causes cholera’s life-threatening diarrhea.

 

Research continues on the development of diagnostic tests for rapid detection of the EMS/AHPNS pathogen that will enable improved management of hatcheries and ponds, and help lead to a long-term solution for the disease. It will also enable a better evaluation of risks associated with importation of frozen shrimp or other products from countries affected by EMS.

 

Some countries have implemented policies that restrict the importation of frozen shrimp or other products from EMS-affected countries. Lightner said frozen shrimp likely pose a low risk for contamination of wild shrimp or the environment because EMS-infected shrimp are typically very small and do not enter international commerce. Also, his repeated attempts to transmit the disease using frozen tissue were unsuccessful.

 

Since EMS was first reported in China in 2009, it has spread to Vietnam, Malaysia and Thailand, and now causes annual losses more than U.S. $1 billion. EMS outbreaks typically occur within the first 30 days after stocking a newly prepared shrimp pond, and mortality can exceed 70%.

 

In an effort to learn from past epidemics and improve future policy, the World Bank and the Responsible Aquaculture Foundation, a charitable education and training organization founded by the Global Aquaculture Alliance, initiated a case study on EMS in Vietnam in July 2012. Its purpose was to investigate the introduction, transmission and impacts of EMS, and recommend management measures for the public and private sectors.

 

The study team included Lightner, who with University of Arizona co-workers recently identified the EMS/AHPNS pathogen. At a panel discussion on EMS at the Global Aquaculture Alliance’s GOAL 2012 meeting in October 2012, Lightner and Timothy Flegel speculated that the elusive nature of the disease might be explained by a bacteriophage.

 

EMS is among the topics that will be addressed at GAA’s GOAL 2013 conference in Paris, France, from Oct. 7 to 10.

 


Via Αλιεία alieia.info
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MAGAZINE: Global Aquaculture Advocate - May/Jun...

MAGAZINE: Global Aquaculture Advocate - May/Jun... | Aquaculture (Global Aqua Link) | Scoop.it
Global Aquaculture Advocate The Global Aquaculture Advocate is a four-color trade magazine focused on efficient and responsible aquaculture throughout the world.
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Icelandic Group beefs up management team to prepare for Asia growth - Fish Update

Icelandic Group beefs up management team to prepare for Asia growth - Fish Update | Aquaculture (Global Aqua Link) | Scoop.it
Icelandic Group beefs up management team to prepare for Asia growth Fish Update “They are the catalyst for the company to lead the way in the marketing of Icelandic Seafood in this, one of fast growing global markets.” In the UK the Icelandic Group...
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DFO scientist amazed by 'extreme' ocean temperatures - CBC.ca

DFO scientist amazed by 'extreme' ocean temperatures - CBC.ca | Aquaculture (Global Aqua Link) | Scoop.it
CBC.ca
DFO scientist amazed by 'extreme' ocean temperatures
CBC.ca
Scientists want to know whether it's driving some fish northward.
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EDITORIAL: Fishy timing on aquaculture file

EDITORIAL: Fishy timing on aquaculture file | Aquaculture (Global Aqua Link) | Scoop.it
Since releasing its ambitious aquaculture strategy a year ago, and financially helping Cooke Aquaculture expand salmon farming in Nova Scotia, the provincial government has been snoozing like an oyster bed on its promise to improve environmental...
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Plans for Deep Sea Salmon Farm in Ireland’s Galway Bay Run Into Troubled Waters

Plans for Deep Sea Salmon Farm in Ireland’s Galway Bay Run Into Troubled Waters | Aquaculture (Global Aqua Link) | Scoop.it
Plans for Deep Sea #Salmon Farm in Ireland’s Galway Bay Run Into Troubled Waters | http://t.co/R99dDD5bmL #aquaculture
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NS moves to modernize 'weak' aquaculture regulations - CBC.ca

NS moves to modernize 'weak' aquaculture regulations - CBC.ca | Aquaculture (Global Aqua Link) | Scoop.it
CBC.ca NS moves to modernize 'weak' aquaculture regulations CBC.ca Nova Scotia's NDP government is putting new marine-based aquaculture site applications on hold until a newly struck panel reports on ways to improve the rules surrounding...
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Protein sources - Alternative protein sources should also show functionality if they are to play a role in modern aquafeeds

The aquaculture industry today faces a number of challenges that threaten to restrict its development and profitability.

Via Perendale Publishers (Tuti Tan)
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Online Magazine - The Advocate

Online Magazine - The Advocate | Aquaculture (Global Aqua Link) | Scoop.it
Lastest issue of the Global Aquaculture Advocate, with part II of “Governments And Seafood Consumption, Part II.... http://t.co/s6Dn9GOciE
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Rocky Coast News AP: New Aquaculture Regulations to Better Protect Coastal Communities

Rocky Coast News AP: New Aquaculture Regulations to Better Protect Coastal Communities | Aquaculture (Global Aqua Link) | Scoop.it
"Atlantic Canada's online news magazine." http://t.co/SWbtQrt275
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NFWF Announces 2013 Grants for Sustainable Fish...

NFWF Announces 2013 Grants for Sustainable Fish... | Aquaculture (Global Aqua Link) | Scoop.it
AMCC & @AlaskaSeaGrant project to sustain AK's amazing halibut was funded. Thx@NFWFnews!
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Weekly Overview: Aquaculture Certification Harmony and Sustainable ... - TheFishSite.com

Weekly Overview: Aquaculture Certification Harmony and Sustainable ... - TheFishSite.com | Aquaculture (Global Aqua Link) | Scoop.it
TheFishSite.com
Weekly Overview: Aquaculture Certification Harmony and Sustainable ...
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The Aquaculturists: 01/05/13: Lobster aquaculture funding in Tasmania; US steelhead trout farms gets BAP status; Canadian election candidates share salmon farming opinions

The Aquaculturists: 01/05/13: Lobster aquaculture funding in Tasmania; US steelhead trout farms gets BAP status; Canadian election candidates share salmon farming opinions | Aquaculture (Global Aqua Link) | Scoop.it
$5 m for lobster aquaculture in Tasmania; US steelhead trout farms gets BAP status and more... http://t.co/qxdkoB2V5f
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Cause Of EMS Shrimp Disease Identified

Big Headline from Global Aquaculture Alliance: "Cause Of EMS Shrimp Disease Identified" http://t.co/audVcYHO5q
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UnderwaterTimes.com | Research: Health Defects Found In Fish Exposed To Deepwater Horizon Oil Spil

Three years after the Deepwater Horizon oil spill in the Gulf of Mexico, crude oil toxicity continues to sicken a sentinel Gulf Coast fish species, according to new findings from a research team that includes a University of California, Davis,...
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Preventing the spread of aquatic invasive species by aquaculture and baitfish ... - Michigan State University Extension

Preventing the spread of aquatic invasive species by aquaculture and baitfish ...
Michigan State University Extension
Baitfish and aquaculture industries are diverse and complex, as are their risks of spreading AIS.
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Campbell River Mirror - Atlantic salmon net pens; For or against?

Campbell River Mirror  - Atlantic salmon net pens; For or against? | Aquaculture (Global Aqua Link) | Scoop.it
The Mirror asked the three North Island candidates: Fish farming, specifically raising Atlantic salmon in net pens, are you for or against? (What do the #NorthIsland candidates have to say about BC #Salmon Farming?
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GENDER IN AQUACULTURE AND FISHERIES

GENDER IN AQUACULTURE AND FISHERIES | Aquaculture (Global Aqua Link) | Scoop.it
For the Asian Fisheries Society (#Whatwillittake to reach gender equality in aquaculture and fisheries?
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EDITORIAL: Fishy timing on aquaculture file - TheChronicleHerald.ca

EDITORIAL: Fishy timing on aquaculture file - TheChronicleHerald.ca | Aquaculture (Global Aqua Link) | Scoop.it
EDITORIAL: Fishy timing on aquaculture file TheChronicleHerald.ca Since releasing its ambitious aquaculture strategy a year ago, and financially helping Cooke Aquaculture expand salmon farming in Nova Scotia, the provincial government has been...
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Energy efficiency improving and pellet uniformity control in the extrusion of aquafeed

How did Muyang increase energy efficiency of the extruder system?

Via Perendale Publishers (Tuti Tan)
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Solar powered fish dryer opens in Naththandiya - Ceylon Daily News

Ceylon Daily News Solar powered fish dryer opens in Naththandiya Ceylon Daily News The solar powered fish dryer in the Mudukatuwa fisheries village in Naththandiya established by the Technology, Research and Atomic Energy Ministry under its Vidatha...
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Nova Scotia to study rules for fish farms

HALIFAX – The Nova Scotia government is setting up a panel to develop new regulations for the aquaculture industry by the end of 2014.
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GAA Defends BAP Certification of New Zealand King Salmon

BAP is more than a certification, it's reassurance that GAA has your back: http://t.co/p8g76uvH21
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Science Cuts In Canada: PEARL, ELA Among Many On Tories' Hit List - Huffington Post Canada

Science Cuts In Canada: PEARL, ELA Among Many On Tories' Hit List - Huffington Post Canada | Aquaculture (Global Aqua Link) | Scoop.it
Science Cuts In Canada: PEARL, ELA Among Many On Tories' Hit List
Huffington Post Canada
The Kluane Lake facility, one of Canada's oldest research facilities, lost $106,000 due to MRS cuts.
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Seminar: Aquaculture Southern Africa / Nyheter / Hjem - Veterinærinstituttet

Seminar: Aquaculture Southern Africa / Nyheter / Hjem - Veterinærinstituttet | Aquaculture (Global Aqua Link) | Scoop.it
Content Management System (South Africa: Seminar: David Huchzermyer and Peter Britz: Aquaculture and disease problem in Southern Africa....
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