Overview Objectives

The project will study two viruses that have caused heavy losses to prawn farmers. The team will use advanced molecular analyses to characterise the two viruses, and any related strains, and then develop and evaluate molecular probes for diagnosing and tracking the virus in the field.

Project Background and Objectives

The production of cultured prawns is an increasingly important industry worldwide. Thailand is the world’s largest producer, with exports worth about $2500 million. In the past decade, however, disease has emerged as the single most important factor threatening the economic sustainability of prawn farming throughout the world. The World Bank estimated that in 1994 disease wiped out 45% of world production - a loss of about $3800 million. The collapse of the wild prawn fishery in the Yellow Sea has also been connected with disease in the prawn farming industry.

In 1996 the World Aquaculture Society called for greater knowledge of the structure, biology and epidemiology of viruses affecting the prawn farming industry in Asia. Such knowledge would also be important in protecting the small Australian industry which, in 1995-6, is estimated to have lost about 15% of potential production (more than $5 million) through disease.

Most deaths in farmed prawns are caused by White Spot Baculovirus (WSBV) and Yellow Head Virus (YHV). Significant research on the two viruses has been conducted in Thailand and elsewhere in the region. However, control of the two diseases is still limited by inadequate knowledge of the biology of the viruses, the characteristics of their spread, and by the lack of sensitive in-field tests for quick and accurate diagnosis of the presence of the virus.

Project ID
Project Country
Inactive project countries
Commissioned Organisation
CSIRO Livestock Industries, Australia
Project Leader
Professor Peter Walker
03 5227 5165
03 5227 5555
Collaborating Institutions
Mahidol University, Thailand
Network of Aquaculture Centres in Asia Pacific, Thailand
James Cook University, Australia
Department of Fisheries, Thailand
CSIRO Animal Health, Australia
Project Budget
Start Date
Finish Date
Extension Start Date
Extension Finish Date
ACIAR Research Program Manager
Mr Barney Smith