34,221 results

Aquatic Animal Health Subprogram: Characterisation of abalone herpes-like virus infections in abalone

Project number: 2009-032.20
Project Status:
Completed
Budget expenditure: $265,002.00
Principal Investigator: Mark S. Crane
Organisation: Agriculture Victoria
Project start/end date: 31 Jul 2009 - 29 Jun 2012
Contact:
FRDC

Need

At the National Abalone Health Workplan Priority Setting Workshop held on 18 June 2008 in Melbourne, attended by representatives from DPI Victoria, SARDI, FRDC, VADA, TAC, EZAIA), AAGA, ACA, CSIRO, DPIW Tasmania, RecFish, DAFF and NSW DPI, it was agreed that to address the main epidemiological questions research should be focussed on 4 areas:
1) Development of diagnostics techniques with the highest priorities being:
- Technique to isolate and concentrate the virus from abalone tissues (addressed in FRDC Project 2007/006)
- A rapid and specific diagnostic test-development of a validated PCR-test for the AVG virus (addressed in FRDC Project 2007/006)
- Secondary diagnostic test (ISH development addressed in FRDC Project 2007/006)
- Validation of diagnostic tests (partly addressed in proposed extension of FRDC Project 2007/006 (PCR) and this project (ISH validation))
- Rollout of diagnostic tests across the States (addressed in proposed extension of FRDC Project 2007/006)
- Distribution of infective dose in tissues (to be addressed by this proposal)
2) Disease aetiology and transmission with the highest priorities being:
- Other bio-vectors and abiotic factors (to be addressed by this proposal)
- Determination of the susceptibility of remnant populations following exposure to AVG (to be addressed by this proposal)
3) Virus inactivation with the highest priorities being:
- Determine the viability of the AVG virus, including disinfection efficacy; efficacy of treatments (to be addressed by this proposal)
- Survival of the virus in seawater (to be addressed by this proposal)
- Survival of the virus on fomites (to be addressed by this proposal)
4) Disease surveillance and modelling with the highest priorities being:
- National survey of stocks to determine current distribution of the virus, including latency, and resistance status of stocks (partly addressed by this proposal)
- Determine the mode(s) of spread of the AVG (not addressed)

Objectives

1. Validate the developed in situ hybridisation diagnostic test including roll out to other States
2. Develop a quantitative assay (qPCR) for determining infectious dose for this virus
3. Determine the sensitivity of the virus to physico-chemical conditions including its stability in water/on fomites and its sensitivity to inactivation agents
4. Determine the role of mucus in viral transmission
5. Determine whether a latent stage exists in AVG
6. Determine the susceptibility of remnant populations of abalone previously exposed to AVG and known unexposed wild populations in South Australia

Aquatic Animal Health Subprogram: Characterisation of abalone herpes-like virus infections in abalone

Project number: 2009-032
Project Status:
Completed
Budget expenditure: $401,292.00
Principal Investigator: Mark S. Crane
Organisation: CSIRO Australian Animal Health Laboratory
Project start/end date: 7 Feb 2010 - 29 Oct 2012
Contact:
FRDC

Need

At the National Abalone Health Workplan Priority Setting Workshop held on 18 June 2008 in Melbourne, attended by representatives from DPI Victoria, SARDI, FRDC, VADA, TAC, EZAIA), AAGA, ACA, CSIRO, DPIW Tasmania, RecFish, DAFF and NSW DPI, it was agreed that to address the main epidemiological questions research should be focussed on 4 areas:
1) Development of diagnostics techniques with the highest priorities being:
- Technique to isolate and concentrate the virus from abalone tissues (addressed in FRDC Project 2007/006)
- A rapid and specific diagnostic test-development of a validated PCR-test for the AVG virus (addressed in FRDC Project 2007/006)
- Secondary diagnostic test (ISH development addressed in FRDC Project 2007/006)
- Validation of diagnostic tests (partly addressed in proposed extension of FRDC Project 2007/006 (PCR) and this project (ISH validation))
- Rollout of diagnostic tests across the States (addressed in proposed extension of FRDC Project 2007/006)
- Distribution of infective dose in tissues (to be addressed by this proposal)
2) Disease aetiology and transmission with the highest priorities being:
- Other bio-vectors and abiotic factors (to be addressed by this proposal)
- Determination of the susceptibility of remnant populations following exposure to AVG (to be addressed by this proposal)
3) Virus inactivation with the highest priorities being:
- Determine the viability of the AVG virus, including disinfection efficacy; efficacy of treatments (to be addressed by this proposal)
- Survival of the virus in seawater (to be addressed by this proposal)
- Survival of the virus on fomites (to be addressed by this proposal)
4) Disease surveillance and modelling with the highest priorities being:
- National survey of stocks to determine current distribution of the virus, including latency, and resistance status of stocks (partly addressed by this proposal)
- Determine the mode(s) of spread of the AVG (not addressed)

Objectives

1. Validate the developed in situ hybridisation diagnostic test including roll out to other States
2. Develop a quantitative assay (qPCR) for determining infectious dose for this virus
3. Determine the sensitivity of the virus to physico-chemical conditions including its stability in water/on fomites and its sensitivity to inactivation agents
4. Determine the role of mucus in viral transmission
5. Determine whether a latent stage exists in AVG
6. Determine the susceptibility of remnant populations of abalone previously exposed to AVG and known unexposed wild populations in South Australia

Taking female mud crabs (Scylla serrata): assessment of risks and benefits

Project number: 2009-031
Project Status:
Completed
Budget expenditure: $67,499.00
Principal Investigator: Ian Brown
Organisation: Department of Agriculture and Fisheries EcoScience Precinct
Project start/end date: 31 Jul 2009 - 30 Jul 2010
Contact:
FRDC
SPECIES

Need

Over two decades ago Dr Burke Hill (in the FIRTA report on Queensland's Mud Crab Fishery) recommended a trial period allowing the take of females provided there was a monitoring programme in place to evaluate the result. Such a trial has not yet been implemented, and while much excellent work on mud crabs has been done in recent years, it is not sufficient to answer the 'big-picture' question of sustainability.

Information based on empirical data is needed to inform the Mud Crab Fishery Management Plan development process. At present there are many points of view about the relevance and need for the SSHP, but there is little hard evidence.

For some years industry has argued for a relaxation of the legislation, bringing it into line with that in NSW and NT. However without scientific evidence management is reluctant to change the status quo, and in turn FRDC has been unwilling to fund the necessary work because of a perception that the recommendations may not implemented. DPI&F is now actively seeking ways to improve the profitability of the State’s fishing industry, and a relaxation of the SSHP has been endorsed by all parties as one way to achieve this aim.

There are two primary issues that need addressing in relation to changing the SSHP – sustainability and profitability. The risks associated with both need to be determined objectively before a decision can be made to progress any investigation into the effects of the policy.

The project aligns closely with the DPI&F joint priorities of industry profitability and sustainability, and directly addresses QFIRAC Key R&D Topic #3 - A critical evaluation of management strategies to optimise the soci-economic value of portunid crab fisheries, particularly in terms of the potential value and/or ecological impact of altering the current single-sex harvest policy in Queensland.

Objectives

1. Evaluate the risks and benefits of allowing the harvest of female mud crabs in Queensland.
2. Depending on (1), develop a plan for implementing a change to the SSHP arrangement.

Final report

ISBN: 978 0 7345 0419 7
Author: Ian Brown

Ecological risk assessment for effects of fishing on habitats and communities

Project number: 2009-029
Project Status:
Completed
Budget expenditure: $120,425.00
Principal Investigator: Alistair Hobday
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 31 Jul 2009 - 29 Jun 2010
Contact:
FRDC

Need

The risk-based ERAEF approach to assessing impacts from fishing underpins strategic assessment for AFMA-managed fisheries, and is also crucial in the AFMA ERM process.

The ERAEF methodology uses a hierarchical approach to estimate risk from fishing activities. Level 1 (SICA) in the hierarchy has been applied to all Commonwealth fisheries across all five components (target species, bycatch and byproduct species, TEP species, habitats, and ecological communities). The Level 2 PSA species and habitat assessment tools have already been developed and applied for a subset of fisheries in the Stage 2 ERAEF project. In the proposed project we will assist in the development of a framework for ERA to ERM for habitats identified as high risk from the existing analyses, look to integrate the ERAEF results with other projects focusing on habitat impacts (FRDC 2003/021). Level 1 (SICA) in the hierarchy has been applied to all Commonwealth fisheries across all five components (target species, bycatch and byproduct species, TEP species, habitats, and ecological communities). The Level 2 PSA species and habitat assessment tools have already been developed and applied for a subset of fisheries in the Stage 2 ERAEF project. In the proposed project we will assist in the development of a framework for ERA to ERM for habitats identified as high risk from the existing analyses, demonstrate this using worked examples from the SESSF (or GAB), and a fishery that is relatively data poor such as the WDWT. We will also complete the development of the community component methodology.

Objectives

1. Provide a framework for the ERA to ERM for the ERAEF Level 2 Habitat assessment approach
2. Complete the development of the ERAEF Level communities (ecosystems) approach

Final report

ISBN: 978‐1‐921826‐54‐2
Authors: Alistair J. Hobday Catherine M. Bulman Alan Williams Mike Fuller
Final Report • 2012-01-09 • 1.43 MB
2009-029-DLD.pdf

Summary

It is now widely recognized that fisheries can have impacts on marine species, habitats and ecosystems beyond the direct impacts of fishing on target species. For example, hundreds of species are regularly caught and discarded in many trawl and longline fisheries and in particular, interactions with threatened species are a concern in many fisheries. Impacts on habitats and ecological communities as a result of fishing activities have also been documented. To address these broader impacts of fishing, ecosystem-based fisheries management (EBFM) has emerged as a complementary approach to single-species management. Development of practical methods to implement EBFM has generally lagged the policy mandates, and so development of scientific and management tools to support practical implementation has been critical.

Moves towards EBFM have also evolved in Australian fisheries during the past decade, driven by a number of policy directions and initiatives. These include: (i) a national approach to ecologically sustainable development; (ii) development of fisheries legislation that incorporates explicit reference to wider ecological impacts of fishing (e.g. the Fisheries Management Act 1991); (iii) new environmental legislation that assesses fisheries against environmental standards (e.g. the Environmental Protection and Biodiversity Conservation Act 1999); and (iv) Australia’s Oceans Policy, which also adopts an explicit ecosystem-based approach to management.

Environment
PROJECT NUMBER • 2009-024
PROJECT STATUS:
COMPLETED

Mapping the distribution and movement of gulper sharks, and developing a non-extractive monitoring technique, to mitigate the risk to the species within a multi-sector fishery region off southern and eastern Australia

This two year project provided the science to support the development of a management strategy for three gulper sharks species (genus Centrophorus) being assessed for threatened species listing. Their listing represented one of the most urgent environmental challenges to the South East Scalefish and...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart

Movement patterns and stock structure of Australian sardine (Sardinops sagax) off South Australia and the East Coast: implications for future stock assessment and management

Project number: 2009-021
Project Status:
Completed
Budget expenditure: $248,797.00
Principal Investigator: Timothy M. Ward
Organisation: SARDI Food Safety and Innovation
Project start/end date: 30 Jun 2009 - 29 Jun 2011
Contact:
FRDC
SPECIES

Need

This project is needed to assess the potential for increasing catches of sardine in the fisheries off SA (i.e. SASF) and the East Coast (i.e. NSW Ocean Haul Fishery and SPF).

For the SASF, information on the patterns and rates of movement of sardines between the Great Australian Bight (where the majority of the spawning biomass is located) and southern Spencer Gulf (where most fishing is conducted) is needed to determine whether (or not) future potential increases in the TAC should be accompanied by the establishment of zones within the fishery.

For the NSW Ocean Haul Fishery and SPF, information on the patterns and rates of movement of sardines along the East Coast is needed to assess the extent to which estimates of spawning biomass from northern NSW and southern Qld waters reflect the size of the entire sardine stock off eastern Australia.

Objectives

1. To collate data held for jurisdictions to generate hypotheses regarding movement patterns and stock structure of Australian sardine throughout southern Australia.
2. To evaluate the use of otolith shape analyses for testing hypotheses regarding the movement patterns of sardine in southern Australia.
3. To evaluate the use of transect-based otolith microchemistry techniques (laser ablation ICPMS) for examining the movement patterns of sardine between gulf and shelf waters of SA and along east coast of Australia.
4. To collate findings to determine: a) whether or not additional spatial management (zones) would be needed to support a future increase in the TAC in the SA Sardine Fishery
and b) the degree to which estimates of spawning biomass from waters off northern NSW and southern Qld reflect the size of the entire eastern Australian sardine stock.
Environment
Environment
PROJECT NUMBER • 2009-019
PROJECT STATUS:
COMPLETED

Evaluating the potential use of change-in-ratio and index removal techniques for determining harvest rates and efficiency increases in the Western Rock Lobster Fishery

This project developed and explored methodology intended to enable the production of more reliable estimates of fishing efficiency increases and harvest rate, such that these estimates might be available for use by fisheries scientists, thereby improving the quality of the management decisions...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
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