Title:

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

Project Number:

2011-048

Organisation:

CSIRO Australian Animal Health Laboratory

Principal Investigator:

Mark S. Crane

Project Status:

Completed

FRDC Expenditure:

$75,000.00

Program(s):

Environment

Need

Australian prawn production at around 22 kilotonnes is valued in excess of $250 million. Clearly, the prawn fishery is an important natural resource for Australia that is also the basis for a significant export industry. In addition, prawn aquaculture is a significant industry in northern Australia and accounts for around 14% of the total volume of Australian prawn production. Infectious myonecrosis is a viral disease that has caused significant disease outbreaks and mortalities in farmed Penaeus vannamei in Brazil and South-East Asia, including Indonesia. While P. vannamei is considered the principal host, experimental infection of P. stylirostris (Pacific blue shrimp) and P. monodon (black tiger shrimp) has been reported. The susceptibility of other shrimp/prawn species is unknown. Information on the susceptibility of prawn species important to Australia, including banana prawns (Fenneropenaeus merguiensis), brown tiger prawns (P. esculentus) is lacking. This project would provide information on the susceptibility of two important species of Australian prawns to exotic IMNV. Such information is important to policy-makers, regulators and primary producers with respect to relevant biosecurity issues at all levels of government.

Objectives

1. Import infectious myonecrosis virus (IMNV) of known pathogenicity

2. Determine the susceptibility of banana prawns to IMNV

3. Determine the susceptibility of brown tiger prawns to IMNV

Final Report - 2011-048-DLD - Tactical Research Fund - Aquatic Animal Health Subprogram: determining the susceptibility of Australian species of prawns to infectious myonecrosis

Final Report
ISBN:978-1-4863-0533-9
ISSN:
Author(s):Mark Crane
Date Published:April 2015
Principal Investigators: Nichols Gudkovs and Mark Crane
 
Keywords: Infectious myonecrosis (IMN); infectious myonecrosis virus (IMNV); banana prawn (Fenneropenaeus merguiensis); brown tiger prawn (Penaeus esculentus); in vivo infectivity trials; susceptibility; prawn virus
 
Summary: Infectious myonecrosis (IMN) is a viral disease that has caused significant disease outbreaks and mortalities in farmed Litopenaeus vannamei (Pacific white shrimp) overseas (OIE, 2014). The economic loss in Brazil alone was estimated to be US$20 million in 2003 (Tang et al., 2005). While L. vannamei is considered the principal (natural) host, experimental infection of Penaeus stylirostris (Pacific blue shrimp) and P. monodon (black tiger shrimp) has been reported (Tang et al., 2005). The susceptibility of other shrimp/prawn species is unknown. Information on the susceptibility of prawn species important to Australia is lacking. Using the bio-secure containment facility provided by the CSIRO Australian Animal Health Laboratory, this study provides significant new information on the susceptibility of two commercially important species of Australian prawns, F. merguiensis (banana prawn) and P. esculentus (brown tiger prawn), following exposure to exotic IMNV. Such information is important to policy-makers, regulators and primary producers with respect to relevant biosecurity issues at all levels of government.