White Spot Syndrome Virus

White spot disease (WSD) is an internationally notifiable disease of crustaceans caused by White Spot Syndrome Virus (WSSV). On 22nd November 2016 a WSSV incursion was first reported in Black Tiger Prawns (Penaeus monodon) grown on a prawn farm taking water from the Logan River, SE QLD.

In response to the WSD outbreak FRDC implemented the following projects to support the prawn farming and wild catch sector and provide clear direction towards planning for future recovery for affected farms and fisheries; and protecting the biosecurity of areas away from the Logan River control zone.

Current Research

2016-064

Field observations and assessment of the response to an outbreak of White Spot Disease (WSD) in Black Tiger Prawns (Penaeus monodon) farmed on the Logan River in November 2016.
Status – Completed.

2016-066

Assessing compliance and efficacy of import conditions for green (raw) prawn in relation to White Spot Syndrome Virus (WSSV).
Status – Completed, including supplementary report

2016-066 Supplementary report: Assessing compliance and efficacy of import conditions for uncooked prawn in relation to White Spot Syndrome Virus (WSSV) through testing retail commodities and comparison of stringency of import measures with other imported commodities into Australia

2016-266

Prawn White Spot Disease Response Plan.
Status – Completed.

2016-267

Economic Impact of 2016 White Spot Disease Outbreak - summary overview.

Status – Near completion. Near final data based upon information provided by affected farmers and fishers provided to Ridge Partners.

2016-172

Collation of white spot syndrome virus testing from wild-caught re-imported prawns

Status – Completed.

2016-141

White Spot Syndrome Virus (WSSV) preparedness for biosecurity awareness and adoption of best practice by the NSW and QLD wild catch commercial fishers - understanding what extension pathways work best.
Status – Commenced.

Past Research

2012-030

Prawn Superpowers Summit - enhancing awareness of emergency aquatic animal disease response arrangements for the Australian prawn farming industry

2011-259

Seafood Incident Response Plan 2012

2011-048

Tactical Research Fund - Aquatic Animal Health Subprogram: determining the susceptibility of Australian species of prawns to infectious myonecrosis

2003-671

Aquatic Animal Health Subprogram: Enhancing the emergency disease response capability of WA Department of Fisheries and industry bodies associated with freshwater crayfish culture

2003-640

Aquatic Animal Health Subprogram: subprogram conference `Emergency Disease Response Planning and Management

2002-660

Aquatic Animal Health Subprogram: enhancement of emergency disease management through the education and training of the CCEAD participants on the CCEAD process

2002-647

Aquatic Animal Health Subprogram: production of an AQUAVETPLAN disease strategy manual for white spot disease of all WSV-susceptible crustaceans

1975-003

White spot in prawns - There are two conditions of prawns called white spot – this project was about the white spot caused potentially by spoilage, microsporidial infection or fungal infection

 

Consumer Research 

In response to the WSD outbreak FRDC implemented the following projects to support the prawn farming and wild catch sector and provide clear direction towards planning
for future recovery for affected farms and fisheries. In addition to this research a consumer market research study was initiated to provide an estimate of the likely ‘reach’ and ’impact’ of this issue. The research was conducted with a representative sample of the Australian population aged 18+.

Future Research Needs 

It is likely that FRDC will need to support a range of WSD R&D projects in future as immediate, medium and longer term priorities are identified through current project activities and ongoing consultation between industry, national and international aquatic disease experts and government R&D and biosecurity agencies. 

 

FOOD SAFETY AND INFORMATION FOR CONSUMERS

White spot disease does not pose a threat to human health or food safety.

 

COMMON QUESTIONS

What is white spot disease?

White spot disease (WSD) is a highly contagious viral disease of decapod crustaceans including prawns, crabs, yabbies and lobsters. White spot disease is caused by white spot syndrome virus (WSSV).

Where is white spot disease found?

WSD is widespread throughout prawn farming regions in Asia and has become established in prawns farmed in the Americas where it has caused severe losses.

How is white spot disease spread?

The disease is primarily spread through the movement of infected animals or water. Birds feeding on infected animals can contribute to the spread of the disease.

Can fish spread the virus?

No. Fish are not carriers of the virus that causes WSD.

What does white spot disease look like?

Prawns with WSD may have a loose shell with numerous white spots (0.5-2.0mm in diameter) on the inside surface of the shell and a pink to red discolouration.

How to report white spot disease

It is crucial that all aquaculture operators, commercial and recreational fishers and other waterway users report unusual signs in prawns (including bait) and other crustaceans.

Early detection provides a better chance of being able to contain and eradicate this serious disease.

If you see crustaceans that you suspect have the disease it is important to take note of the location and time and report this information immediately to Biosecurity Queensland on 13 25 23.

Alternatively phone the Emergency Animal Disease Watch Hotline on 1800 675 888 from anywhere in Australia.

 

 

Further information

The World Organisation for Animal Health (OIE) - http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review/viewsummary?fupser=&dothis=&reportid=21737 

http://www.outbreak.gov.au/current-responses-to-outbreaks/white-spot-disease 

Department of Agriculture and Water Resources http://www.outbreak.gov.au/current-responses-to-outbreaks/white-spot-disease

Queensland Department of Agriculture and Fisheries https://www.daf.qld.gov.au/animal-industries/animal-health-and-diseases/a-z-list/white-spot-disease

Australian Prawn Farmers Association http://apfa.com.au/ 

Australian Council of Prawn Fisheries http://www.prawncouncil.com.au

FRDC Trade Data

Trade data for prawns


Inquiries

Senate Inquiry “The biosecurity risks associated with the importation of seafood and seafood products (including uncooked prawns and uncooked prawn meat) into Australia”  http://www.aph.gov.au/Parliamentary_Business/Committees/Senate/Rural_and_Regional_Affairs_and_Transport/Seafoodimportation

Inspector-General of Biosecurity’s review of the circumstances leading to the 2017 suspension of uncooked prawn imports into Australia and the biosecurity considerations relevant to future trade in uncooked prawns http://www.igb.gov.au/Pages/suspension-uncooked-prawn-imports.aspx  

Intergovernmental Agreement on Biosecurity Review http://www.agriculture.gov.au/biosecurity/partnerships/nbc/intergovernmental-agreement-on-biosecurity/igabreview  

 

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