Branchial surfaces of finfish species contain a microbial layer rich in commensal bacteria which can provide protection through competitive colonization and production of antimicrobial products. Upon disturbance or compromise, pathogenic microbiota may opportunistically infiltrate this protective barrier and initiate disease.

10/01/2021

Chloramine-T (Cl-T) is a disinfectant and sanitizer widely applied to treat bacterial infections on the gill and skin of Atlantic salmon during freshwater culture. It is typically applied as static or flush treatments during periods of disease risk or in response to pathogen detection or gross disease signs.

01/01/2022

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01/01/2023

Hydrogen peroxide is widely used as a treatment of ectoparasite (e.g. salmon lice, amoebic gill disease) affected Atlantic salmon (Salmo salar) in aquaculture but has frequently caused unacceptable levels of mortality.

07/01/2021

Atlantic salmon production in Tasmania (Southern Australia) occurs near the upper limits of the species thermal tolerance. Summer water temperatures can average over 19 °C over several weeks and have negative effects on performance and health. Liver tissue exerts important metabolic functions in thermal adaptation.

02/01/2018

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09/01/2018

Reiterative freshwater bathing is the main treatment to control amoebic gill disease (AGD) of farmed Atlantic salmon in Tasmania, Australia. Regular freshwater exposure appears to control ectoparasitic cymothoid isopods, which were only seen at high prevalence and intensity in summer when fish had not been treated for over 100 days.

05/01/2019

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06/01/2019

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06/01/2019

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12/01/2019

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12/01/2019

An orthomyxo-like virus was first isolated in 1998 as an incidental discovery from pilchards Sardinops sagax collected from waters off the South Australian coast. In the following 2 decades, orthomyxo-like viruses have been isolated from healthy pilchards in South Australia and Tasmania.

04/01/2020

The Tasmanian salmon industry had remained relatively free of major viral diseases until the emergence of pilchard orthomyxovirus (POMV). Originally isolated from wild pilchards, POMV is of concern to the industry as it can cause high mortality in farmed salmon (Salmo salar).

09/01/2020

Pilchard orthomyxovirus (POMV) is an emerging pathogen of concern to the salmon industry in Australia. To explore the molecular events that underpin POMV infection, we challenged Atlantic salmon (Salmo salar) post-smolts in seawater via cohabitation.

09/01/2020

The Tasmanian Atlantic salmon (Salmo salar) aquaculture industry had remained relatively free of major viral diseases until the recent emergence of pilchard orthomyxovirus (POMV).

10/01/2020

Amoebic gill disease (AGD) is the primary health concern for Atlantic salmon Salmo salar farmed in Tasmania, Australia. Neoparamoeba perurans is the aetiological agent of AGD; however, a diversity of other amoebae colonise the gills, and their role in AGD is unknown.

08/01/2019

Amoebic gill disease (AGD) is one of the main health issues impacting farmed Atlantic salmon. Neoparamoeba perurans causes AGD; however, a diversity of other amoeba species colonizes the gills and there is little understanding of whether they are commensal or potentially involved in different stages of gill disease development.

12/01/2020

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11/01/2016

The marine protozoan parasite Neoparamoeba perurans has been established as the causative agent for amoebic gill disease (AGD) in Atlantic salmon (Salmo salar). Freshwater bathing is the only routinely used treatment for AGD in Australia while hydrogen peroxide (H2O2) is used in countries with cooler water temperatures.

12/01/2020

Not supplied

02/01/2017

Marine farmed Atlantic salmon (Salmo salar) are susceptible to recurrent amoebic gill disease (AGD) caused by the ectoparasite Neoparamoeba perurans over the growout production cycle. The parasite elicits a highly localized response within the gill epithelium resulting in multifocal mucoid patches at the site of parasite attachment.

05/01/2021

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04/01/2017

Branchial surfaces of finfish species contain a microbial layer rich in commensal bacteria which can provide protection through competitive colonization and production of antimicrobial products. Upon disturbance or compromise, pathogenic microbiota may opportunistically infiltrate this protective barrier and initiate disease.

05/01/2021

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12/01/2017

Molecular (PCR) diagnostic tests for the detection and identification of aquareovirus in general, and Tasmanian Atlantic salmon reovirus (TSRV) specifically, were developed, and their diagnostic sensitivity and specificity were determined and compared with virus isolation in cell culture.

08/01/2014

Atlantic salmon reovirus (TSRV) has been consistently isolated from Atlantic salmon in Tasmania, since first identification in 1990 under the Tasmanian Salmonid Health Surveillance Program (TSHSP). The distribution and prevalence of TSRV was identified using TSHSP data." 01/01/2015,Atlantic Salmon Aquaculture Subprogram: AGD resistance - learning from other species to bolster the natural Atlantic salmon response,health-and-welfare,disease

09/01/2014

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08/01/2015

The Aquabirnavirus genus of the viral family Birnaviridae consists of viruses present in a diverse array of freshwater and marine fish and some invertebrates from broad geographic locations (Reno 1999). Infectious pancreatic necrosis virus (IPNV) is the type species of aquabirnavirus that cause significant disease, particularly in farmed salmonids (Roberts & Pearson 2005).

09/01/2015

We studied the expression of 28 genes that are involved in vertebrate sex-determination or sex-differentiation pathways, in male and female Atlantic salmon (Salmo salar) in 11 stages of development from fertilization to after first feeding. Gene expression was measured in half-sibs that shared the same dam.

12/01/2015

Scientists at the Institute for Marine and Antarctic Studies have completed a two year experimental project on a globally emerging fish disease. Dr Mark Adams and co-investigators Dr Andrew Bridle and Professor Barbara Nowak investigated the comparative susceptibility and host responses of various endemic and salmonid fishes to amoebic gill disease (AGD).

02/01/2016

Scientists at the Institute for Marine and Antarctic Studies have completed a two year experimental project on a globally emerging fish disease. Dr Mark Adams and co-investigators Dr Andrew Bridle and Professor Barbara Nowak investigated the comparative susceptibility and host responses of various endemic and salmonid fishes to amoebic gill disease (AGD).

02/02/2016

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02/01/2011

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06/01/2016

The use of swabs relative to organs as a sample collection method for the detection of Tasmanian salmon reovirus (TSRV) in farmed Tasmanian Atlantic salmon, Salmo salar L., was evaluated by RT-qPCR.

11/01/2012

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06/01/2016

Phenotypic sex in salmonids is determined primarily by a genetic male heterogametic system; yet, sex reversal can be accomplished via hormonal treatment. In Tasmanian Atlantic salmon aquaculture, to overcome problems associated with early sexual maturation in males, sex-reversed females are crossed with normal females to produce all female stock.

06/01/2013

Farmed Atlantic salmon (Salmo salar) is a globally important production species, including inAustralia where breeding and selection has been in progress since the 1960s. The recentdevelopment of SNP genotyping platforms means genome-wide association and genomicprediction can now be implemented to speed genetic gain.

08/01/2016

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08/01/2013

The present project relates principally to Programs 1 (Environment) & 2 (Industry) of the FRDC’s Strategic priority areas. Specifically the project will increase the gross value of production, profit margins, productivity and opportunity (Theme 7) for Huon, through providing the company with a means to expand operations into offshore and more exposed fish farming areas.

09/01/2016

This project has successfully adapted an isolated perfused gill model specifically to Atlantic salmon and has provided in vitro results of gill function and branchial vascular resistance in AGD-affected animals. This model represents a novel in vitro method for AGD research.

09/01/2013

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12/01/2013

The relationship of Atlantic salmon gastrointestinal (GI) tract bacteria to environmental factors, in particular water temperature within a commercial mariculture system, was investigated.

04/01/2014

The relationship of Atlantic salmon gastrointestinal (GI) tract bacteria to environmental factors, in particular water temperature within a commercial mariculture system, was investigated.

04/01/2014

Amoebic Gill Disease remains the most important health issue for the Atlantic salmon industry in Tasmania. Significant progress was made during project 2008/218, including proving Koch’s postulates and development of a PCR based detection method.

04/01/2014

Management costs (ca. 10% GVP) associated with AGD are severely limiting further expansion and sustainability of the Tasmanian Atlantic salmon industry. A holistic approach that combines alternative treatments, better management procedures, the use of a vaccine and selection of stock that are more resistant to infection would greatly reduce the impact of AGD.

08/01/2008

Ambient environmental conditions mean that the Tasmanian salmon industry will always suffer from high maturation rates due to its high water temperatures and increased light intensity. Additional artificial lighting in Tasmania has been shown to reduce maturation by up to 30%; increase growth rates significantly; and delay maturation by 8 weeks (Porter et al., unpublished).

06/01/2009

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06/01/2009

Prior to this project, our knowledge of Amoebic Gill Disease (AGD) was fundamentally limited. An improved understanding of host-pathogen interactions was required to provide a basis from which to develop effective strategies for future control and treatment of the disease.

08/01/2004

Antibiotics and antifoulants are used in aquaculture operations to ensure the health and well-being of farmed stock. Antibiotics are used as a direct response to infectious diseases, whilst antifoulants are needed to counteract bio-fouling, a condition which is a significant problem to the local aquaculture industry and reduces water flow and oxygen supply in the cages, increasing stress levels and hence diseasesusceptibility in the fish.

09/01/2009

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.

08/01/2004

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12/01/2009

P. salmonis is a serious pathogen of salmonid fish species, which can cause significant losses in farmed salmonids. The development/establishment of an internationally recognised Standard Diagnostic Technique for the detection and identification of P. salmonis and related pathogens will permit State/Commonwealth agencies to establish accurate information on the presence or absence of these pathogens in fish populations.

08/01/2004

Cumulative data from other parasites suggests that blocking of Aquaporin channels (AQPs) may provide a suitable target for the use of pharmaceuticals to control these diseases. Neoparamoeba share many similarities with other pathogens.

11/01/2010

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12/01/2005

Viruses in the family Birnaviridae belong to 3 genera: Aquabirnavirus, Avibirnavirus and Entomobirnavirus (Delmas et al. 2005). The genus Aquabirnavirus is the largest and most diverse of these genera, and aquatic birnaviruses have been isolated from a large number of different aquatic animal species, both marine and freshwater, throughout the world (Hill & Way 1995, Reno 1999).

12/01/2010

There is an urgent need to develop novel treatments which would reduce the impact of AGD on salmon industry. A detailed benefit – cost analysis for the AQUAFIN CRC AGD project was undertaken which gave a Net Present Value of the economic benefit of $21.6M, Benefit/Cost Ratio of 5.3.

01/01/2005

Tasmanian salmon typically mature after only one winter at sea, in contrast to northern- hemisphere populations where the majority take two ‘sea-winters’ to mature. The Tasmanian fish still reach 3 – 5 kg during this period due to the favourable effects of higher temperature on growth, however, the less desirable outcome of early maturation is the compression of the harvest season.

12/01/2006

Diagnostic competence in the identification of Vibrio species is of growing concern with the expansion and diversification of aquaculture in Australia. The urgent need to improve diagnostic capacity has been identified as an essential goal in the SCFA Research Priorities for Australian Fisheries & Aquaculture.

07/01/2007

There is an urgent need to develop and commercialise treatments for the control of amoebic gill disease in the Atlantic salmon aquaculture industry in Tasmania. The cost-benefit analysis undertaken by the Aquafin CRC suggested a net present value of economic benefit of $21.6M AUD and a benefit/cost ratio of 5.3.

09/01/2007

Before this project our knowledge of immune response in Amoebic Gill Disease (AGD) was fundamentally limited and more information was required to assess the potential for immunomodulators in the management of AGD.

10/01/2007

This proposal is fulfilling objectives of Aquafin CRC Centre Agreement and it is within the key research areas for Aquatic Animal Health Subprogram Strategic R&D Plan

11/01/2007

Understanding the interaction between fish nutrition and environmental parameters has an extremely high priority in several sectors of the Australian finfish aquaculture industry. Climate change appears to be causing high summer water temperatures in salmon growing regions.

05/01/2008

Commercial salmonid culture in Australia is among the country's top three aquaculture sectors. The salmonid aquaculture industry is an important player in the Tasmanian economy.

06/01/2008

The most significant outcome of this project is the commencement in July 2007 of sea trials for the experimental DNA vaccine made up of six antigens shown to provide a relative increase in protection of approximately 40 percent in laboratory based amoebic gill disease (AGD) trials.

06/01/2008

A percentage of the pelleted feed distributed to salmon in sea-pens is wasted because the feed distribution methods do not always satisfy the requirements of the fish in terms of feed frequency and quantity.

01/01/1996

The final draft of Viral Haemorrhagic Septicaemia (VHS) – A Disease Strategy Manual is now complete. Chapter One of this Manual describes the disease. Chapter Two discusses the Principles for Control of this disease, and Chapter Three details the Preferred Control Policy that will be used if VHS is detected in Australia.

06/01/2004

The aquaculture of Atlantic salmon began in Australia in the mid-1960' s with an importation of ova from Canada to New South Wales. Anecdotal evidence suggested that the Australian population went through a severe bottleneck event during the early years due to poor survival and subsequent small broodstock numbers.

01/01/1998

The final draft of Whirling Disease – A Disease Strategy Manual is now complete. Chapter One of this Manual describes the disease. Chapter Two discusses the Principles for Control of this disease, and Chapter Three details the Preferred Control Policy that will be used if the disease is detected in Australia.

06/01/2004

The aquaculture of Atlantic salmon began in Australia in the mid-1960' s with an importation of ova from Canada to New South Wales. Anecdotal evidence suggested that the Australian population went through a severe bottleneck event during the early years due to poor survival and subsequent small broodstock numbers.

01/01/1998

An outcome to date is the use of molecular markers by a member of the Atlantic salmon industry to pedigree and estimate relatedness of broodstock for the commencement of a selective breeding program.

08/01/2004

This Project is funded by the FRDC for the “Development of a Stock Protection System for Flexible Oceanic Pens Containing Finfish“. The Project has been developed in conjunction with the TSGA & the TBOA.

01/01/2001

The research provided data of strategic importance on the feed requirements of a major farmed Australian fish species, Atlantic salmon, and advanced the study of fish nutrition, particularly our understanding of essential amino acid requirements.

01/01/2002

This project primarily addresses physiological "robustness" in Atlantic salmon. Critical issues for the Tasmanian salmon industry include understanding the physiological response of salmon to hypoxia due to decreased dissolved oxygen (DO) and increases in other dissolved metabolic wastes.

01/01/2011

Amoebic Gill Disease (AGD) is one of the most serious health issues for the Tasmanian salmonid farming industry and significantly increases production costs of Atlantic salmon in Tasmania (Nowak et al 2002).

01/01/2011

Not supplied

01/01/2012

This project has provided evidence of specific alleles/genotypes of EST03G12 that are associated with AGD resistance. Furthermore, differences in EST03G12 genotypes may be functional as the EST potentially encodes for a novel g-type lysozyme, an innate immune molecule, in Atlantic salmon.

01/01/2012

Amoebic gill disease (AGD), caused by the pathogenic free living protozoan Neoparamoeba perurans is the most significant health issue currently affecting the production of Tasmanian Atlantic salmon Salmo salar.

01/01/2013

One of the primary breeding goals of the Saltas selective breeding program is resistance to amoebic gill disease (AGD), which is the main health issue affecting production of Atlantic salmon (Salmo salar) in Tasmania.

01/01/2014

The main health issue affecting Atlantic salmon marine aquaculture in Tasmania is amoebic gill disease (AGD), a parasitic disease which causes extensive gill pathology. AGD is treated by proactively bathing fish in freshwater, based upon regular assessment of the intensity and frequency of gross gill signs (“gill score”) in each caged population.

01/01/2015

The causative agent of amoebic gill disease, Neoparamoeba perurans is reported to lose virulence during prolonged in vitro maintenance. In this study, the impact of prolonged culture on N. perurans virulence and its proteome was investigated.

01/01/2021

To identify the level of decline in genetic variation in Tasmanian stock of farmed Atlantic salmon

06/01/2000

Amoebic gill disease (AGD) remains the major disease associated with sea-cage culture of Atlantic salmon in Tasmania. AGD is associated with a Paramoeba species infecting the gills.

08/01/2001

Amoebic gill disease (AGD) is associated with extensive mortality and reduced production of Atlantic salmon in Tasmania. It is caused by the amoeba Neoparamoeba pemaquidensis that infects the gills of cultured salmon.

04/01/2002

The salmon industry is one of Australia’s largest aquaculture industries and produced approximately 16,000 tonnes of farmed Atlantic salmon, Salmo salar, in 2001/02 at an estimated farm gate value of $170 million.

09/01/2003

This project implemented the agreed Strategic R&D Plan for the salmon industry for the period 2007-2008.

01/01/2010

The report is intended as a resource for all of the different communities with an interest or a stake in the marine waters of the lower Huon Estuary and D’Entrecasteaux Channel.

02/01/2013

This submission comprehensively reviews research undertaken by the University of Tasmania’s Institute for Marine and Antarctic Studies (IMAS) and its predecessors, commonly in collaboration with other organisations, over the last 20 years.

06/01/2015

This submission has been prepared by the University of Tasmania’s Institute for Marine and Antarctic Studies (IMAS) in response to a request from the Marine Farming Planning Review Panel (the Panel).

11/01/2016

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10/01/2017

Australia’s wild-catch fisheries and aquaculture are increasingly attentive to the importance of having support from communities and stakeholders to ensure their future sustainability and prosperity. This project aimed to identify determinants of socially-supported wild-catch fisheries and aquaculture in Australia.

06/01/2019

To secure the future of Australian aquaculture, building and maintaining a sufficient level of support and trust from interested and affected communities is vital. Worldwide, there have been several examples of where aquaculture operations have been threatened because of a lack of societal acceptability.

01/01/2023