Table of contents

White spot disease (WSD) is an internationally notifiable disease of crustaceans caused by white spot syndrome virus (WSSV). WSD causes up to 100 per cent mortality on prawn farms throughout Asia, the Americas, and the Middle East. WSSV infects a wide range of decapod crustaceans and is considered exotic to Australia.

On 22 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, south east Queensland (SEQ). The exotic virus proved to be highly contagious and subsequently spread to infect all operational prawn farms in the area by February 2017. These farms lost all stocked prawns during a disinfection program undertaken to contain and eradicate the virus. Surveillance conducted by Biosecurity Queensland during March 2017 also detected WSSV in wild commercially caught prawns and crabs in the Logan River and north-western parts of Moreton Bay (over 70 kilometres north of the Logan River). The most likely pathway for introduction of WSSV into Moreton Bay is widely considered to be through using imported uncooked prawns infected with WSSV as bait or burley by recreational fishers.

In response to the incursion, in 2017 a white spot biosecurity control zone was established restricting the movements of uncooked crustacean products out of Moreton Bay. This significantly impacted commercial fishing industries in Moreton Bay supplying bait prawns and bloodworms. In an attempt to eradicate WSSV, all prawn farms on the Logan River were required to cease production for the 2017-18 growing season.

WSSV was detected north west of Moreton Bay in the late summer of 2018 and most recently in March 2020. In April 2020 WSD was also recorded on prawn farms adjacent to the Logan River.

In October 2017, the FRDC ran a white spot disease research and development needs workshop - see report.

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. The projects aimed to improve farm biosecurity and protect the biosecurity of areas away from the Moreton Bay white spot biosecurity control zone.

Current and recently completed research


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.


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


Prawn white spot disease Response Plan.

Status – Completed.


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.


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

Status – Completed


White spot syndrome virus (WSSV) preparedness for biosecurity awareness and adoption of best practice by the NSW and QLD wildcatch commercial fishers - understanding what extension pathways work best.

Status – Commenced

Past research


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


Seafood Incident Response Plan 2012


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


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


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


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


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


White spot in prawns

Consumer research

In response to the WSD outbreak, FRDC implemented projects to support the prawn farming and wildcatch 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 years and over.

Read more here: July 2017 FRDC white spot consumer research

Future research needs

It is likely the 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 (0.5-2.0 millimetres 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

FRDC Trade Data


Commercial operator information pack