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Australian Prawn Farms - Emerging disease investigation

Project number: 2018-166
Project Status:
Current
Budget expenditure: $180,960.00
Principal Investigator: Matthew A. Landos
Organisation: Australian Prawn Farms Pty Ltd
Project start/end date: 3 Feb 2019 - 30 Nov 2019
:

Need

Bacterial cultures from sick PL's from crashing hatchery tanks did not reveal a common pathogen across the multiple dying hatchery tanks.
Understanding the cause of the substantial hatchery PL mortality could be of value to all hatcheries across the prawn farming industry. Intermittent tank crashes are reported at most hatcheries over their history of operation.
With use of new diagnostic tools, such as next Generation sequencing, exploration for novel pathogens can be commenced using stored material from the hatchery outbreaks.
The further investigation of the hatchery and pond mortalities, offers the opportunity to better define the factors associated with the syndrome, thereby informing management measures for future seasons at this farm, and for the rest of the prawn farming industry.

Objectives

1. Describe potential pathogens in six batches of preserved PL's from sick APF hatchery tanks from 2018 season
2. Develop qPCR for bacterial toxin genes identified in NGS analysis of bacterial cultures collected from APF hatchery water during 2018 season
3. Determine the presence of putative bacterial toxins in prawn larvae samples from sick APF larvae tanks during 2018 season
4. Identify useful post-stocking sampling methods for PL's to monitor health status
5. Preservation of samples from three trial stocking ponds to provide temporally relevant samples for subsequent analysis if warranted by low survival determination at 5-8 weeks.
6. Determine the cause(s) of low survival in experimental prawn ponds, should it occur, using range of diagnostic tests and epidemiological assessment of risk factors
7. Levels of agri-chemical pollutants in source water entering ponds will be measured and their effects on prawn larval health considered
8. Develop recommendations for future operation of hatchery and ponds at APF

Final report

ISBN: 978-1-64713-669-7
Authors: Dr James Fensham Dr Matt A. Landos Mr Matt West Dr Ian Anderson Dr Charles Caraguel
Final Report • 2020-01-01 • 2.09 MB
2018-166-DLD.pdf

Summary

This project was developed by Future Fisheries Veterinary Service (FFVS) in collaboration with Australian Prawn Farms (APF), James Cook University (JCU) Aqua Path laboratory, Queensland Biosecurity Sciences Laboratory (BSL) and the University of Adelaide (UofA). Unprecedented mortality events occurred in a commercial Australian prawn industry hatchery and grow-out farm between August 2018 and January 2019. Initial investigations did not identify the consistent involvement of an infectious agent in particular. A range of potential risk factors appeared to be associated with tank- and pond-level mortality events, however subsequent mitigation of these in the hatchery, did not appear to fully resolve the mortalities. The chronology of outbreaks within the hatchery and soon after pond stocking raised alarm that this could be an Australian case of Early Mortality Syndrome. Further investigation was warranted to identify if emerging infectious agents may be involved and to determine evidence-based control and prevention methods accordingly. During 2019, a prospective grow-out pond trial and retrospective epidemiological analysis of farm data were performed, to identify potential causative agents and/or risk factors associated with the mortality events. The project outputs will help shape recommendations for reducing disease risks, improve hatchery and grow-out farm practices, and further refine disease investigation approaches. The project was funded through the Fisheries Research and Development Corporation (FRDC).
Industry

Strategic management of the Australian Prawn Farmers Association RD&E portfolio

Project number: 2019-076
Project Status:
Current
Budget expenditure: $161,204.96
Principal Investigator: Kim Hooper
Organisation: Australian Prawn Farmers Association (APFA)
Project start/end date: 28 Jul 2019 - 27 Feb 2023
:

Need

The Australian prawn farming industry is rapidly expanding and APFA has identified the need for assistance to manage the APFA/FRDC IPA as efficiently and effectively as possible to ensure full realisation of benefits for the RD&E investment by industry and the Board of FRDC.
Specifically a position is needed to undertake the following tasks needed by APFA:
• Where and when appropriate, fully expend APFA IPA funds annually to address highest priority R&D issues required by APFA members;
• Identifying additional sources of funding for research activities to maximise the leveraging of APFA IPA funds;
• Applying for additional grants and funding for research activities;
• Increasing people development through workshops/presentations;
• Coordinating successful research activities in a collaborative manner;
• Guiding and assisting the development of applications that align with APFA R&D strategic planning;
• Managing project milestones and inform the R&D committee;
• Managing communication and extension of R&D activities and outcomes to industry and to FRDC;
• Liaising with, and assisting, project stakeholders to ensure outcomes for the industry and FRDC;
• Ensuring the best use of resources and best practice;
• Ensuring effective and rapid dissemination, extension and update of the outcomes of RD&E;
• Assisting the APFA R&D committee to perform their duties through coordination of research applications to APFA and monitoring progress to ensure outcomes;
• Coordinating R&D committee meetings; and
• Developing an annual industry report for FRDC and industry.

Objectives

1. Coordinate development of RD&E projects in line with APFA/FRDC IPA.
2. Manage communications with APFA members.
3. Promote confidence by APFA farm members and researchers in APFA’s RD&E investment for betterment of the industry.
4. Coordinate projects in line with the APFA RD&E Strategic Plan.
5. Promote RD&E investment confidence through an annual industry workshop and presentation at the APFA conference.
6. Promote people development.

Final report

Author: Kim Hooper
Final Report • 2022-12-01 • 593.30 KB
2019-076-DLD.pdf

Summary

This report describes the outcomes from a five-year Industry Partnership Agreement (IPA) between Fisheries Research and Development Corporation (FRDC) and the Australian Prawn Farmers Association (APFA). The project was led by APFA Executive Officer, Kim Hooper with assistance from members of the APFA Management Committee and Chair of the APFA R&D Subcommittee Tony Charles. The primary objective of the IPA was to coordinate R&D related to Australian prawn farming funded through FRDC and other sources. To ensure involvement of members in the development, execution, and extension of research for members of the APFA.
This project worked within the framework of the APFA Strategic Management plan 2020, to conduct
research in the following key priority areas:
• Animal Health and Performance
• Industry Biosecurity and Border Protection
• Human Capital and Emerging Technologies
• Broodstock-Sourcing, Quality and Supply
• Environmental Sustainability and Compliance
Throughout this project, APFA undertook 14 projects, 4 of which are now complete or near completion. Projects supported by the IPA were consistent with the priorities in the APFA Strategic Management Plan 2020-2025 and FRDC priorities (Appendix A & B). All the projects have delivered benefits to the industry.
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