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People Development Program: Nuffield Scholarship for an Aquaculture and/or Fish producer

Project number: 2009-324
Project Status:
Completed
Budget expenditure: $336,542.73
Principal Investigator: Jodie Dean
Organisation: Nuffield Australia
Project start/end date: 31 Mar 2010 - 29 Apr 2014
Contact:
FRDC

Need

The long-term capacity of Australia's aquaculture and fishing industry to compete and succeed internationally will be determined by the ability of Australian producers to recognise changing consumer preferences, adopt new technologies and production practices and maintain the sustainability of their operations by protecting their production environment.

To do this they need to be knowledgeable about the forces shaping international trade policy in key markets, the issues behind consumer sentiment and the technological advances being made by producers in other countries. They need to be able to digest this information and then use it to make rational management decisions, which position their enterprises to benefit from international opportunities as they arise. All of this lies at the heart of the Nuffield Australia Farming Scholarship program.

Each year, Nuffield Australia awards Scholarships to selected primary producers throughout Australia. The objective of these scholarships is to increase practical farming knowledge, improve management skills and encourage the use of new and innovative production techniques. These scholarships give Australian citizens the opportunity to study farming practices in New Zealand, Europe, Asia and the Americas and countries relevant to the Scholar's interests.

This project addresses the goal of the FRDC’s People Development Program (the Program) which is to develop the capabilities of the people to whom the industry entrusts its future by investing in research and development activities that:
1. enhance industry leadership within all sectors;
2. build industry capacity to drive change to achieve goals;
3. encourage knowledge transfer and R&D adoption;
4. build workforce capability; and
5. recognise and promote achievements.

Particular focus is given to the outcomes sought under objective 3 - encourage knowledge transfer and R&D adoption.

Objectives

1. To build the capacity of the aquaculture/fishing industry to overcome the challenges of a global and internationally competitive environment through the provision of FRDC support for an annual Nuffield Farming Scholarship for an aquaculture or fishing producer for the next three years.

Report

Author: Ben Ralston
Report • 2015-10-01 • 1.82 MB
2009-324-DLD-Ben Ralston Report.pdf

Summary

A changing culture, education and a robust supply chain are three very important roles in Australia’s oyster industry. The Australian oyster culture is changing with the help of international chefs and one particular oyster finisher, Steve Feletti; who has been leading the way in changing the oyster culture in the way he sells and markets his oysters.

In the past, Australian oyster farmers sold live oysters in bulk to processors who would shuck the oyster and rinse the oyster meat under a fresh water shower. This method is becoming less respected and is seen as a lower profit way of selling oysters from the farm gate. 

The majority of the worlds’ oyster supply will see oysters being sold live and oysters will be shucked, either to order at restaurants and markets, or taken home and shucked in household kitchens. The reason behind this is the oyster remains alive until it has been shucked and then it will be served in its own natural juice.  In fact, in some countries it is against the law to serve or handle oysters the same way Australians do. Educating the consumer is about teaching them how to handle, shuck and serve live oysters. The future opportunities for farmers are to sell live oysters with higher value or profit margins.

Re-modelling the supply chain is the aim of the study. The supply chain needs to be robust and add value. This needs to start at government and policy level; fed through to farmers, transport, restaurants; and finish at the consumers. The lack of communication between government, oyster associations, oyster committees and farmers is becoming an increasing issue.  

The recommendations of this report show how a stronger supply chain could add value. The winners will be farmers changing their supply chain to the value chain, restaurants/markets selling higher quality, and the consumers getting value for money.

Project products

Report • 2014-08-01 • 916.15 KB
2009-324-DLD-Ewan McAsh Report.pdf

Summary

Globally,  seafood  consumption  is  on  the  rise.  This  rise  in  demand  provides  this  Aquaculture  Industries with the opportunity to increase production and profitability. The New South Wales (NSW) Oyster Industry in particular, has a huge potential to capitalise on this trend.

The  NSW  Oyster  Industry  has  a  world-­‐class  quality  assurance  program  and  healthy,  export  classified estuaries producing high quality shellfish. However, the industry is in serious decline. It is plagued by decreasing production and poor profitability and without significant intervention in the next few years, the industry is at real risk of disappearing.

Strategic planning was critical in the success of the once failing Australian Wine Industry. Key aspects of that, and other successful industry strategic plans include:

  • An ambitious and engaging vision for the future;
  • Industry ownership of the strategic plan; and
  • Strong leadership with a whole of industry approach.

An  industry  driven  strategic  plan  is  vital  to  create  an  envisioned  future  of  the  NSW  Oyster  Industry  and  unlock  its  potential.  A  NSW  Strategic  Plan  would  detail  the  scale  and  scope  of opportunity.  It  would  also  form  the  framework  so  that  on  a  day-­‐to-­‐day  basis,  individual  businesses,  the  NSW  Farmers  Association,  the  Government  and  supportive  Non-­‐Government Organisations (NGO's) can all work towards this vision together. Furthermore, it will serve as a catalyst and rallying point to revitalise the NSW Oyster Industry and help ensure its long-­‐term survival, growth and success.

Report • 2012-10-01 • 1.37 MB
2009-324-DLD-Clint Scharfe report.pdf

Summary

The focus of this research was about using the positive aspects of other industries, particularly other prawn fishing industries, throughout the supply chain.  The objectives of this research were to:

  1. Investigate new technologies and how they could be applied in South Australia.
  2. Learn about management practices in other fisheries and identify those that could improve the performance of the Spencer Gulf Prawn Fishery and prawn fisheries in Australia more generally.
  3. Identify how product differentiation will improve prawn prices (including the value of an internationally recognised environmental accreditation system, ie Marine Stewardship Council certification).

Through the research conducted, there are several opportunities that have been identified to improve the performance of the Spencer Gulf Prawn Fishery in the international market as well as within the fishery itself.  In particular, there is a need to highlight Australia’s stringent food safety standards overseas and a need for better labelling of product (ie so other inferior product is not sold as Australian).  There are also opportunities for live prawn exports that obtain higher prices, which need further investigation and research.  Additionally, consideration needs to be given to the current operations of the Spencer Gulf Prawn Fishery, in relation to vessel numbers; there would be a greater advantage to those in the fishery to have fewer operators.  Furthermore, should the Spencer Gulf Prawn Fishery introduce a mechanism, which reduces the fleet size, there are new technologies that can assist with processing product on board vessels.

Report • 2017-06-01 • 1.29 MB
2009-324-DLD-Wayne Dredge Report.pdf

Summary

Australia’s Southern and Eastern Scalefish and Shark Fishery (SESSF) is a multi-species fishery that covers nearly 50% of Australia’s Exclusive Economic Zone (EEZ) and is made up of seven different fishing sectors. The total economic value of the fishery in (2014-2015) was AU$68 million (Patterson, et al., 2016) and unlike many other high value Australian fisheries, mainly supplies the domestic market with fresh finfish and shark. 

Within the SESSF is the Shark Gillnet sector which predominantly targets Gummy shark in the Commonwealth waters off Victoria, Tasmania, South Australia (SA) and Western Australia (WA). The biological stock of Gummy shark is considered sustainable with a Total Allowable Catch (TAC) of 1,836 tonnes and commercial catches are reported in 16 separate fisheries across southern Australia. The demersal gillnets used to catch Gummy shark are considered a passive, selective and low impact form of fishing. 

In response to a report by Goldworthy et al, (2009) suggesting that the failure of the Australian Sea Lion (ASL) population to recover from sealing activities in the 18th and 19th centuries was in part, due to high levels of bycatch mortality within the Shark Gillnet sector, the Australian Fisheries Management Authority (AFMA) imposed formal fishery closures encompassing 6,300 km2 in June 2010 to protect known ASL breeding sites. Since May 2011 further closures were implemented to strengthen ASL protection and reduce the incidence of gillnets interacting with dolphins, bringing the total area closed to gillnet fishing to 129,992 km2. 

These closures had a significant economic impact on fishers and onshore businesses that relied on the shark fishery. Many businesses believe that in order for them to become economically viable again alternative fishing methods must be found which can be used to target Gummy shark in areas closed to gillnet fishing. 

Report • 2012-10-01 • 3.69 MB
2009-324-DLD-Rhys Arangio Report.pdf

Summary

The Australian toothfish industry began in 1994 when commercial quantities of Patagonian toothfish were found by Austral Fisheries off Macquarie Island in Australia’s sub-Antarctic waters.  Today, there is also a commercial stock at Heard Island & McDonald Islands (HIMI) and both these toothfish fisheries are independently certified as sustainable and well managed by the Marine Stewardship Council.  These fisheries contribute approximately $50 million per annum to Australia’s Gross Domestic Product and account for around 14% of the world’s Patagonian and Antarctic toothfish tonnage.  There are two companies that own the rights to fish for toothfish in Australian waters, Austral Fisheries (who hold around 74% of quota) and Australian Longline (who hold around 26%).

Austral Fisheries operate two toothfish vessels, a longline/trap vessel and a trawler.  The company’s aim is to replace the trawler with an additional longliner in 2013 to increase the amount of longline caught fish taken from the fishery.  Longline and trap caught fish are of a premium quality over trawl caught fish, while reducing the impact on the fish stock1 and reducing the potential impact on the seabed.  

With an increased portion of longline caught fish there is also an increased risk of being affected by marine mammal depredation.  In our case, this is most likely to occur from Sperm whales and potentially Killer whales.  In other toothfish fisheries such as the French Crozet Islands fishery, these whales take up to 75% of the fish from the line when they are present (Roche, et al., 2007), which has a serious detrimental effect to the fisherman’s profits.

Report • 1.17 MB
2009-324-DLD Dennis Holder Report.pdf

Summary

The majority of Australia’s fishing fleet is outdated. That is, combustion engines are the typical form of power generation. As power generation technology has superseded traditional diesel engines in the last three decades, there is enormous room and requirement for improvement.

This report examines the prospect of building a modern fishing vessel using the latest technology of propulsion, power storage and power generation. 

The author visited six countries on this study topic including The Netherlands, Iceland, Ireland, Florida (USA), Brussels and Norway, which was a major highlight. Here, the author experienced an electric fishing boat for a full day, met with ship designers, factory tank test hulls, and visited battery and fishing manufacturers.

A key outcome from the study is the evident significant barriers associated with regulations reducing uptake of newer technology. 

Electric and hybrid power generation systems have been successfully utilised in Scandinavia and other parts of mainland Europe. Electric motors provide more power and vessels can utilise smaller engine units and conserve space for additional cargo, catch or crew.

The added efficiencies associated with electric motors like thermal waste re-use, allow for further reductions in required power on board fishing vessels.

In addition, hull design enhances the efficiency of power conversion of electric motors and battery storage solutions are able to capitalise on commercial fishing conditions.

In summary, with new technology it is possible to reduce fuel costs by up to 80%, reduce maintenance costs by up to 50% and positively address occupational health and safety fatigue management and reduce the overall carbon footprint of the industry. 

The now ‘old’ technology in fisheries needs to be supported with legislative framework to adopt today’s available technology. Then, it will become appealing to the younger generations.  

Report • 1.06 MB
2009-324-DLD Ben Tyley Final Report.pdf

Summary

This study is for the purpose of rebuilding the lobster stocks and sustainably managing the future harvest of primarily the Northern Zone rock lobster fishery. Over the past 10 years the total catch of the zone has been steadily decreasing to the present all time low.

The industry has in this time had a complete change of management plans, going from input controls to output restrictions, in the form of individual transferable quota. Since the shift to quota management 7 years ago the total allowable catch has been annually reduced until 2009, hoping to leave more breeding stock in the sea.

The aim of my study has been to network with fishermen, fisheries managers and scientists from the northern hemisphere, where the lobster fishery has survived since the early 1800’s, and in places like Nova Scotia which are having record catches.

Travelling through Maine and Canada’s east coast where in excess of 25% of the worlds annual lobster catch is caught gave me the opportunity to meet and share knowledge with significant stake holders in the industry. The UK and Ireland also have a similar length history of lobster fishing, but their stock levels are significantly lower. This made for an interesting look at different methods of management and fisheries control.

One of the major differences between the North American fisheries and the South Australian fishery is the amount of scientific research being done. Canada and the U.S. have numerous research bodies and facilities, with the fishing industry and the community (through sponsorship) funding many of these. 

One of the most encouraging projects that has just been started in Canada is the study of DNA profiles in lobster. The benefits of being able to trace where a lobster egg hatches, and the path the paurulas take before settling to the sea floor could be invaluable to rebuilding stock levels in lobster fisheries all around the world.

Significant change in the way forward could come in trap design. This is something that has not been changed in the northern zone since moving from input controls when a standard trap was necessary for management purposes. Now that quota management is in place a more efficient trap would mean less time the traps are in the water, therefore less by-catch and lower mortality rates of trapped lobster. This would result in lower running costs for fishermen and more fish being left in the sea.

Another key difference between our industries is public perception. The North American fisheries have strong community support and public understanding of the value of the fishing industry. They are using some brilliant educational and promotional tools that could be well utilized by the Australian industry, to give a better understanding of the fisherman’s commitment to responsible stewardship of the marine resources.

After talking to lobster fishermen and fisheries managers in other sectors of the world, South Australia’s rock lobster industry needs to better promote its self to the general public. It could be said much damage was done in the 60’s and 70’s with the style of fishing compared to the present. Awareness of the environment and marine eco system preservation is very much a part of today’s fishing practice.

Although there is always room for improvement in management plans, the Northern Zones current plan is more detailed than any I saw in the Northern Hemisphere, which I found encouraging.

Report • 557.07 KB
2009-324-DLD Marty Phillips.pdf

Summary

Barramundi farming in Australia is coming under increased pressure from cheaper imported product from South East Asia.  Even the Basa (Pangasius) Catfish industry in Vietnam, a large source of much of the cheap imported product is struggling to remain profitable at the moment because prices are so low.  Production in these countries is less regulated and has a far lower cost of production. If Australian producers are to survive in this climate they will have to implement systems to differentiate and promote their product, as being different from the competitors. Underlying any promotion program there must be a high level of product quality. Some aquaculture production systems in Australia can suffer flesh quality issues which must be overcome to ensure consumer confidence in this iconic Australian fish.

To address the issue of low cost imports I visited the Scottish Salmon Industry who experienced similar problems several years ago with cheaper product coming from Chile and Norway. The industry needed to promote the high quality product they knew they cultured compared to the imported fish and hence developed a program called Scottish Quality Salmon. This was the basis for developing the Tartan Quality Mark and Label Rouge Brand. This program has also been the basis for helping industry address the increasing pressure of Government regulators on their industry which is also a major issue to the Barramundi Industry in Australia. Cheaper imports are also a problem in the other industries visited, including the Trout industry in the UK; the Trout industry in Denmark; several recirculation industries (including Sturgeon, Eels, African Catfish, and Pike Perch) in the Netherlands; the Catfish industry in the USA; and several other smaller industries in the USA.

To examine the flesh ‘off flavour’ issue experienced by many aquaculture industries, I also visited a number of experts, in the abovementioned sectors.

ESD Reporting and Assessment subprogram: strategic planning, project management and adoption

Project number: 2001-082
Project Status:
Completed
Budget expenditure: $170,703.00
Principal Investigator: Rick Fletcher
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 13 Aug 2001 - 30 Jun 2007
Contact:
FRDC

Need

A significant amount of work will be required over the next 3-5 years to incorporate ESD into ongoing fisheries management across Australia to complete this process. A number of studies are already in progress addressing some of the issues. These include the SCFA-FRDC study to develop the guidelines for reporting on ESD (FRDC 2000/145), the Seafood Services project (FRDC 2000/146) which is assisting fishers to develop EMS processes to improve their environmental standards. Moreover, a number of issues, such as those identified at the recent ESD case study workshop or in previous reviews, will require alterations to current studies but more generally the development of a suite of new projects. The issues to be addressed include:

developing relevant expertise to collect and interpret data for the social and economic components,
effective communication of the issues to all major stakeholder groups,
development of methods to ensure active participation of indigenous groups in the process,
developing the framework and the guidelines to enable the process to become a method of assessment, as well as a reporting system.
development of ecological indicators
testing of the robustness of currently used and proposed indicators

The effective coordination of all current and future ESD related projects will be essential if the ultimate aim of having a nationally agreed system is to be successful. Given that the majority of these projects are likely to be at least partly funded by FRDC provides the opportunity to supply the necessary coordination through the formation of an ESD “Sub-Program”.

Using the Sub-Program structure would result in all relevant projects being administered through a common system. Thus, their objectives and the appropriate elements of their methodology would be coordinated to ensure maximum effectiveness, efficiency and thereby minimising duplication. Having such a group would also provide a forum for the exchange of ideas and experiences in a timely fashion which should greatly enhance the synergy and consequently the ultimate outputs from each project.

Such a sub-program would ideally utilise the SCFA Working Group in combination with the ESD ‘Reference Group’ as its steering committee. The Reference Group includes representatives from other relevant areas of government, commercial industry, indigenous interests, recreational fishing, aquaculture, FRDC and environmental groups.

Objectives

1. Provide comments and feedback on the progress of current ESD Reporting and Assessment subpgrogram projects.
2. Assist in the identification of future directions for projects within the ESD Reporting and Assessment subprogram.
3. Provide comments on application submitted for funding through the ESD Reporting and Assessment subprogram.
4. Assist the flow of communication into and from the ESD Reporting and Assessment subprogram and their agency/industry group.

Final report

ISBN: 1-877098-83-3
Author: Rick Fletcher

International Association of Astacology (freshwater crayfish) symposium and workshop

Project number: 2000-265
Project Status:
Completed
Budget expenditure: $15,000.00
Principal Investigator: Glen Whisson
Organisation: Curtin University
Project start/end date: 12 Sep 2000 - 30 Apr 2003
Contact:
FRDC

Need

Research into freshwater crayfish has resulted in steady production increases in Australia over the last two decades. In an effort to take production and profitability to the next level, scientists in Australia have taken the opportunity to host IAA 13. Furthermore, the strategy of organisers has been to couple the event with a one-day workshop/seminar focussing on Australian crayfish aquaculture. The timing of the workshop/seminar (the day before the conference begins) has been set to attract participation from international astacologists, already in Fremantle for IAA 13. This will promote technology transfer into Australia, by giving access to local industry participants at a non-scientific level.

Following on from the one day aquaculture workshop, the IAA 13 symposium will provide a mechanism for the direct transferal and dissemination of cutting-edge research within Australia, as well as providing an international platform for local crayfish scientists to present their research to world-renowned astacologists, and pursue collaborative links for future research. Fisheries WA are planning to present at least six papers at the symposium, including recent research into yabby and marron aquaculture.

The fragility of crayfish aquaculture was highlighted in the 1980s when the crayfish plague, Aphanomyces astaci, obliterated stocks throughout Europe. Research has subsequently identified Australian crayfish as being extremely vulnerable to this infection, reminding Australia of the importance of comprehensive translocation policies. This has been further highlighted by recent disease concerns within the yabby industry. A forum for discussing these issues, and hearing from scientists representing afflicted countries, will augur well for the continuation of sound policy to protect Australia's prime market niche.

Objectives

1. To conduct the 13th biennial symposium of the International Association of Astacology in Fremantle, in August 2000.
2. To capitalise on the expertise gathered for IAA 13 by staging a one day workshop focussing on the aquaculture of Australian crayfish species, on the day prior to the beginning of the symposium.
3. To identify and initiate collaborative research programmes between local researchers and astacologists from interstate and overseas.
4. To gain maximum exposure for the Australian freshwater crayfish industry within the international aquaculture arena.
5. To provide a forum for an international gathering of crayfish scientists to consider environmental, technical and regulatory issues important to international communitiesat the outset of a new century.

Final report

ISBN: 0-9581-424-2-4
Author: Glen Whisson

SCRC: SCRC RTG 3.2: Short term lab placement in Aberdeen, UK (Benita Vincent)

Project number: 2009-751
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Benita N. Vincent
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 30 Sep 2009 - 29 Oct 2009
Contact:
FRDC

Final report

ISBN: 978-1-925982-60-2
Author: Benita Vincent
Final Report • 2009-10-30 • 66.83 KB
2009-751-DLD-RTG.pdf

Summary

To conduct a short term lab placement at the Marine Laboratories in Aberdeen to gain skills in new techniques including producing and maintaining primary cell cultures from gill explants and tissues.

This research travel grant allowed the author to conduct a short term lab placement at the Marine Laboratories in Aberdeen in order to gain skills in new techniques including producing and maintaining primary cell cultures from gill explants and tissues.

Following the short term lab placement in Aberdeen, the author developed techniques to isolate and culture gill cells from Atlantic Salmon. To date, cultures have been maintained for up to 15 days. Ongoing work will involve further development of these techniques to enable isolation of high cell densities of gill cells. In addition adapting cell culture conditions to allow changes in salinity will facilitate the development of assays involving the agent of amoebic gill disease (AGD) in Atlantic Salmon, the marine amoeba, Neoparamoeba perurans. This will in the longer term enable attachment assays to be developed, potentially leading to identifying attachment receptors that may be important in disease development.

Ollies island - interactive edu-tainment program exploring sustainable production and consumption (pilot project)

Project number: 2005-321
Project Status:
Completed
Budget expenditure: $30,000.00
Principal Investigator: Jane Stewart
Organisation: Sustain Ability International Pty Ltd (SAI)
Project start/end date: 8 Nov 2005 - 31 Dec 2006
Contact:
FRDC

Need

It is becoming more and more evident that today’s modern consumers are disconnected from the social, economic and environmental impacts of their consumption habits. Although the fisheries industry, along with a number of other Australian industries, has started to explore some of these key issues, no research has been undertaken to look at the full picture here in Australia. This pilot project will address Challenge 6 of the FRDC’s Strategy by investigating a range of issues associated with the production and consumption across the fisheries industry. It will produce reference information that covers a range of issues relevant to the fisheries industry.

Objectives

1. To research the interconnected issues of production and consumption across the fisheries industry
2. To incorporate this information into a program covering chains of production and consumption across all major industries in Australia.

Taxonomy and ecology of Vibrionaceae associated with red spot disease of Queensland aestuarine fish

Project number: 1984-026
Project Status:
Completed
Budget expenditure: $0.00
Organisation: University of Queensland (UQ)
Project start/end date: 28 Dec 1986 - 31 Dec 1986
Contact:
FRDC

Objectives

1. Confirm involvement of Vibrio anguillarum or a related species in red spot disease in Qld commercial estuarine fish.
2. Clarify classification & methods for identification of the pathogen. Determine means of dispersal & role of host stress.
3. Develop strategy to minimise losses

SCRC: Corporate membership of the Ehrenberg-Bass Marketing Research Institute

Project number: 2011-764
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Larry Lockshin
Organisation: University of South Australia
Project start/end date: 24 Oct 2011 - 29 Jul 2014
Contact:
FRDC

Need

The previous relationship between Seafood CRC and EMBRI went wrong because the CRC was asking EMBRI to do things that had no relationship to their R&D interests. The relationship is now much better as a result of meetings with the new head of marketing where the CRC learned about what EMBRI prefers to investigate. EMBRI has an interst in the science of industry - wide marketing and has a high degree of expertise in this area as it relates to wine. The involvement of Tassal with the CRC and EMBRI is also a positive development.

The CRC needs professional input into all of our marketing projects. This input is needed at the early project develpoment phses, during execution and during reviews. We also need a capaifty to deliver professional marketing R&D if we are to gain significant interaction with supermarkets, large seafood wholesalers and large seafood producers such as Tassal that employ their own professional marketing staff.

As a way to cement a new realtionship with EMBRI it has been proposed that the Seafood CRC joins the institute as a Corporate Member.

Diseases of abalone

Project number: 1987-009
Project Status:
Completed
Budget expenditure: $35,866.00
Principal Investigator: Bob J. Lester
Organisation: University of Queensland (UQ)
Project start/end date: 28 Jun 1990 - 31 Dec 1990
Contact:
FRDC

Objectives

1. Monitor die-back & spread of protozoan parasite Perkinsus.
2. Determine range of hosts
check other mollusc spp. What predisposes abalone to infection & to die?
3. Investigate seeding clean abalone in depleted areas. Predictive research.

Final report

Author: Dr R.J.G. Lester
Final Report • 1990-12-31 • 1.71 MB
1987-009-DLD.pdf

Summary

In 1985 and 1986 many greenlip abalone Haliotis laevigata near Edithburg in the St Vincent Gulf died. The protozoan parasite, Perkinsus olseni, was suspected to be the cause. We showed that Perkinsus olseni was seasonally abundant in greenlip from the edge of the die-back area. It was also common in three other species of abalone, H. rubra, H. cyclobates and H. scalaris, and was recovered from 4 species of bivalves from the same area (Barbatia pistachio, Chlamys bifrons, Katylesia rhytiphora and Pinna bicolor).

In July 1987, 140 healthy abalone were transplanted from Hardwicke Bay to Stansbury at the centre of the die-off in an attempt to recolonize the area. This was done with the help of commercial abalone divers. In the following October, a subsample indicated the transplants were uninfected and were growing well. However, by March 1998, many of the abalone had recently died and the remainder were heavily infected.

In July 1989, 195 greenlip from Tipara Reef were tagged and transplanted to the same site. A subsample the following March indicated that there was good growth, very little infection, and no sign of recent deaths. The epizootic had evidently passed and these abalone were successfully recolonising the area. However, a follow-up sample a year later - in April, 1992 - indicated that many of the animals had become infected though there was no sign of recent deaths.

The die-back area is near the northern limit for greenlip abalone in the Gulf of St Vincent. Laboratory experiments showed that abalone infected with Perkinsus died more frequently than uninfected abalone and that stress such as high temperature may predispose the abalone to disease. The time of the original die-back corresponded to warm winters on the Yorke Peninsula.

Laboratory and field observations suggest that the parasite is common in greenlip in late summer. During winter abalone are able to contain and eliminate the infection. We conclude that the parasite is widespread around the Yorke Peninsula in hosts other than greenlip, and that greenlip near the upper limit of their temperature range are likely to contract fatal infections.

Aquafin CRC - Atlantic Salmon Aquaculture Subprogram: model development for epidemiology of Amoebic Gill Disease

Project number: 2001-245
Project Status:
Completed
Budget expenditure: $322,051.00
Principal Investigator: Barbara Nowak
Organisation: University of Tasmania (UTAS)
Project start/end date: 30 Jan 2002 - 23 May 2005
Contact:
FRDC

Need

The Australian salmon industry is free from the major infectious diseases affecting salmon industries in other countries. Amoebic Gill Disease is the main infectious disease affecting the salmon industry in Tasmania. While this disease occurs in other countries, it does not appear to be as severe as in Australia. The disease-related fish mortalities are greatly reduced by freshwater bathing, however the disease treatment results in greater production costs and reduces the Australian salmon industry’s ability to compete in international markets. While development of a vaccine to protect against the causative agent is a desirable solution for the industry, it must be appreciated that this is a challenging task and requires a long-term view. In the meantime, the industry needs more knowledge of AGD epidemiology and more tools to improve management of fish with AGD on the farms, which would improve AGD treatment and control and decrease the risk of large outbreaks of AGD. As a direct result this should lead to reduced production costs. Improved understanding of the epidemiology of the disease will also provide a valuable basis on which to develop strategies for vaccine application in the future.

The ultimate goal is to have an AGD surveillance system in place, to provide information about the host, agent and environment which is relevant to prevention and management of the disease. The results will improve our understanding of factors contributing to AGD outbreaks and will develop a best industry practice protocol aimed at the reduction of AGD effects on the salmon industry in Tasmania. Information from the surveillance system will facilitate better decisions on the timing of treatments as well as provide long term data for analysis to identify additional management strategies aimed at minimisation of disease risks and economic impacts. Specifically, farm-level surveillance data will eventually provide a basis for measuring spatial and temporal trends in AGD occurrence in both the host and potential reservoirs as well as environmental and production factors associated with changes in AGD occurrence. Analysis of retrospective data will permit the identification of improved management strategies as well as providing farm managers with a more reliable basis on which to make decisions on prevention and control. This project will provide ways of value adding to the data collected by the salmon industry in general. It will protect individual company interests with respect to privacy of commercial information.

Objectives

1. Identification of Neoparamoeba pemaquidensis reservoirs
2. Identification of risk factors for AGD including the spatial relationship between infected and uninfected cages.
3. Development of a pilot surveillance system

Final report

ISBN: 1-86295-227-2
Author: Barbara Nowak
Final Report • 2005-01-17 • 1.92 MB
2001-245-DLD.pdf

Summary

Amoebic Gill Disease (AGD) is the main health problem affecting salmon industry in Southern Tasmania.  To improve management of fish with AGD on the farms, the industry needs better understanding of AGD epidemiology.  This will provide a basis on which to develop strategies for new treatment or vaccine application in the future.

We have identified reservoirs of the amoeba causing AGD in Atlantic salmon in Tasmania.  The amoebae were widespread and easily isolated from marine and estuarine sediments and cage netting.  There was no apparent relationship between the presence of the amoebae in the environment and AGD prevalence in the cages.  Development of methods to isolate amoebae from water samples and to accurately quantify the amoebae is needed if the relationship between the amoebae in the environment and AGD outbreaks is to be fully understood. However, computer simulations suggested that once fish in a cage are infected with AGD, they become the main source of amoebae and other reservoirs become insignificant.

This project provided specialised training in introductory and advanced epidemiology, sampling design, design of field trials and data analysis to all stakeholders, including researchers, government veterinarians and industry. Potential for AGD data sharing and analysis for the whole industry was discussed. A trial AGD database was set up, however industry showed no interest in using it. A computer model was developed based on data from one farm collected during 2003.  While the simulations provided interesting insights and identified knowledge gaps, the model could not be validated using data from the same farm from 2002, proving that it has serious limitations.   Increased understanding of the disease outbreaks dynamics is needed before a predictive model of AGD can be developed.

FRDC submission to the review of the Intergovernmental Agreement on Biosecurity (IGAB)

Project number: 2016-069
Project Status:
Completed
Budget expenditure: $4,659.69
Principal Investigator: Mark Boulter
Organisation: Safe Sustainable Seafood Pty Ltd
Project start/end date: 7 Feb 2017 - 27 Feb 2017
Contact:
FRDC

Objectives

1. To develop a submission into the review of the Intergovernmental Agreement on Biosecurity (IGAB)
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