123 results

Tasmanian Aquabirnavirus vaccine development: Towards achieving pan-specific protection of cultured salmonids in Australia using multivalent vaccines

Project number: 2010-032
Project Status:
Completed
Budget expenditure: $1,170,685.09
Principal Investigator: Richard Morrison
Organisation: Department of Natural Resources and Environment Tasmania (NRE TAS)
Project start/end date: 31 May 2010 - 20 Dec 2019
Contact:
FRDC
SPECIES
Atlantic Salmon
Trouts

Need

Commercial in confidence. To know more about this project please contact FRDC.

Objectives

Commercial in confidence
Environment
Environment
Environment

Atlantic Salmon Aquaculture Subprogram: extension funding application- AGD Vaccine phase III

Project number: 2008-218
Project Status:
Completed
Budget expenditure: $612,000.00
Principal Investigator: Barbara Nowak
Organisation: University of Tasmania (UTAS)
Project start/end date: 21 Jul 2008 - 29 Sep 2011
Contact:
FRDC
TAGS
Vaccine
Disease
Biotechnology
Biosecurity
Aquaculture
SPECIES
Atlantic Salmon

Need

There is an urgent need to successfully culture and preserve N. perurans to guarantee future supply of amoebae for research. Existing funding for AGD Vaccine Project Phase III (FRDC 2007/234) is sufficient for sea water and the technical labour to perform 2 additional vaccine/challenge trials after June 2008 (which includes: day to day water management, animal husbandry, collection of amoebae and infection initiation, management of the AGD infection and feeder tanks and histology to confirm AGD status and quantify pathology). There are no resources allocated to investigate culture of N. perurans, perform additional tank-based challenge /vaccine trials (after 2009) or investigate alternative approaches to AGD control.

Objectives

1. Develop techniques to successfully culture and cryopreserve virulent N. perurans
2. Elucidate role of saccharide-inhibitable lectins on the ability of the amoeba to attach to salmon tissue
3. Isolate, identify and investigate antigenicity of the lectin mediating N. perurans attachment
4. Determine whether protection in salmon against AGD can be achieved using the identified N. perurans lectin
5. Maintain and run 4 further laboratory based tank trials for project 2007/234 in 09/10 and 10/11
6. Provide virulent amoebae for other AGD research.

Final report

ISBN: 978-1-86295-661-2
Author: Barbara Nowak
Final Report • 2012-07-23 • 3.01 MB
2008-218-DLD.pdf

Atlantic Salmon Sub Program: Effect of temperature on reproductive development of maiden and repeat spawning Atlantic salmon: understanding the basis for improved egg survival and quality

Project number: 2008-217
Project Status:
Completed
Budget expenditure: $95,327.66
Principal Investigator: Ned Pankhurst
Organisation: Griffith University Nathan Campus
Project start/end date: 31 Jul 2008 - 30 Dec 2009
Contact:
FRDC
TAGS
Reproduction
Physiology
Oceanography
Husbandry
Biology
SPECIES
Atlantic Salmon

Need

Strategic R & D plan
This application fits within the Salmon Aquaculture Subprogram.

Reason for need
Currently, variable and unpredictable egg production has a potential opportunity cost for the Tasmanian salmon industry of $15-20 million per annum. Solving this problem is essential for the industry to maintain its continued strong commercial performance; however, the capacity to reach that solution is currently hindered by our limited understanding of the processes that regulate egg shell assembly and how these contribute to chorion and egg abnormalities, and also how these processes change with stock age and rearing temperature. This application addresses the need to overcome that knowledge gap. Industry results to date show that egg survival can be increased through thermal management; however, the relationship between stock age (maidens or repeats) and thermal conditions have not been systematically investigated, and the industry management protocols are essentially informed guess work.

Benefits
The economic viability of sea cage farming of Atlantic salmon is strongly influenced by the cost of production of smolts. Understanding the mechanisms that contribute to, or cause reproductive failure in spawning fish is an essential component of reducing those industry production costs, and at a broader level, ensuring that there are sufficient smolts produced each year to maintain industry production. The issue has been identified as an industry priority with the stated SALTAS aim of reducing the reliance on repeat spawning fish for egg production. The potential cost of failing to solve the problem is high. The survival of eggs to the eyed embryo stage can be as low as 30-50%, compared with 80% for eggs from best performing fish (SALTAS data). Modelling of this cost gives direct increases in smolt production costs of $225,000 per annum, but a potential industry shortfall in production terms of $15-20 million per annum.

Objectives

1. Determine the effect of age class (maidens or repeats) and thermal regime on reproductive performance (ovarian growth and size, follicle size, time of ovulation, fertility and hatching success) and endocrine parameters (plasma levels of the steroids T and E2, and vitellogenin).
2. Isolate the cDNAs encoding for the G-coupled protein receptor GPR54 and its peptin ligand KiSS-I and develop quantitative expression assays for GPR54 ,KiSS-I, FSH beta subunit (FSHß) and egg shell protein (ZP) mRNAs in Atlantic salmon.
3. Measure plasma levels of ZP in maturing fish.
4. Utilise DNA microarray technology to screen ~650 known salmon genes for differential expression during puberty and sexual development and in response to change in thermal environment, to identify gene networks associated with the above processes.
5. Define histological characteristics and chorionic structure of eggs in relation to stock and rearing conditions
6. Assess endocrine intervention and thermal manipulation as a strategy for increasing fertility, and develop outcomes into a management tool for industry use.

Final report

ISBN: 978-0-646-52772-7
Author: Ned Pankhurst
Final Report • 2010-03-01 • 579.16 KB
2008-217-DLD.pdf

Aquafin CRC - Salmon Aquaculture Subprogram: Facilitation and administration

Project number: 2007-229
Project Status:
Completed
Budget expenditure: $46,143.00
Principal Investigator: Colin Buxton
Organisation: University of Tasmania (UTAS)
Project start/end date: 31 Dec 2006 - 29 Nov 2009
Contact:
FRDC
TAGS
Training
Sustainability
Stakeholder
Community
Biology
SPECIES
Atlantic Salmon

Need

Like any thriving aquaculture industry, the Atlantic salmon industry needs to continually address biological challenges, market and development opportunities and production efficiencies through a coordinated research effort. This enables the industry to ensure sustainability, profitability and to develop to its full potential. The salmon industry does this through a mix of tactical (projects that addresses issues of immediate concern) and strategic (projects addressing longer-term development issues) research. This is achieved through industry strategic plans and to developing collaborative research projects that address industry bottlenecks and avoid duplication and unnecessary expenditure of a finite research funding base.

The SAS provides the delivery mechanism for this approach by ensuring that research is:
- addressing strategic research priorities,
- outcome focussed,
- supported by industry and management,
- adequately funded,
- properly managed and reviewed,
- properly delivered to stakeholders.

The SAS Aquaculture Implementation Committee is also a fundamental management instrument of the Aquafin CRC, providing a vehicle through which the objectives of both the FRDC and Aquafin CRC are realised.

Objectives

1. To administer and co-ordinate the activities of the SAS.
2. To review project proposals, milestone reports and final reports to ensure stakeholder relevance.
3. To facilitate and chair meetings of the SAS Implementation Committee (SASIC).
4. To ensure appropriate liaison between beneficiaries and research providers in the Salmon Sector and to integrate with other finfish sectors.
5. To communicate findings of the SAS through: a) An annual conference held in conjunction with the Aquafin CRC
b) specialist workshops on topics identified through the course of the program
and c) relevant articles in the CRC newsletters - Aquasplash and Salmon Snapshots

Final report

Author: Colin Buxton
Final Report • 2017-09-29 • 230.08 KB
2007-229-DLD.pdf
Industry
PROJECT NUMBER • 2005-201
PROJECT STATUS:
COMPLETED

Aquafin CRC - Atlantic Salmon Aquaculture Subprogram: environmental control of growth and early maturation in salmonids

At present the culture of Atlantic salmon within Australia produces approximately 26,000 t of fish per annum and is a direct employer of over 1100 workers with the majority of farmed fish sold nationally and only 12% exported. Environmental conditions, such as increased temperatures and high light...
ORGANISATION:
University of Tasmania (UTAS)
TAGS
Physiology
Ecosystem
Climate Mitigation
Chemistry
Aquaculture
SPECIES
Atlantic Salmon
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