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Industry
Adoption

Bursaries to attend the 2022 New Zealand Seafood Industry Conference

Project number: 2022-052
Project Status:
Completed
Budget expenditure: $2,675.22
Principal Investigator: Claire Webber
Organisation: SA Sardine Industry Association Inc
Project start/end date: 12 Aug 2022 - 19 Aug 2022
Contact:
FRDC

Need

Bursary recipient will attend five sessions over the two day conference:
- Fishing with care and precision
- Thriving coastal communities
- Growing market value
- Healthy marine environments
- Modernising fisheries management

Additional conference activities will be attended were possible, including networking functions and FRDC meetings.

Benefits of including the bursary recipient in the Australian delegation to New Zealand include:
- Improvements in trans-tasman industry relationships
- Enhanced learning and sharing on important industry issues (notably electronic monitoring of fleets)
- Relevance and input to group discussion and thinking regarding important session topics and ideas
- Increased understanding of government policy decisions and drivers and other external impacts on fishing industry productivity

Objectives

1. Australian fishing industry participation at the Seafood NZ Conference 2022
Industry

Evaluation of nanobubble technology in aquaculture

Project number: 2019-139
Project Status:
Completed
Budget expenditure: $294,869.00
Principal Investigator: Igor Pirozzi
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 30 Jun 2021 - 29 Jun 2023
Contact:
FRDC

Need

In intensive aquaculture systems oxygen supplementation is necessary to prevent hypoxia; however, oversupply can hyper-saturate systems causing gas bubble disease. Oxygenation in aquaculture, fish holding and transport systems using standard technologies is extremely inefficient; standard oxygen transfer efficiencies (SOTE) are estimated at between 2 and 6% per m submergence for coarse and fine bubble diffusers, respectively, at standard conditions of 0 ppt salinity and 20 °C. Advances in the efficiency of gas–liquid phase processes has seen the emergence of nanobubble technologies producing ultrafine bubbles (⌀ 1 µm). The advantage of nanobubbles over larger micro/macrobubbles is that they are neutrally buoyant, negatively charged and can remain within the water column, potentially for weeks. Nanobubble technologies now have a demonstrated application across a broad variety of industries including wastewater treatment, biomedical engineering, gas and oil industry, agriculture, and the food industry. Surprisingly, outside of Japan, there has been little research on the application of nanobubble technology to the aquaculture sector. Nanobubble technology can potentially improve oxygen delivery systems for fish stock and water treatment in aquaculture systems, improving the nitrifying capacity of biofilters and efficiencies in fractionation units. However, there are currently no reliable studies demonstrating the efficacy of nanobubble technology, nor any assessment of the potential health impacts on fish in aquaculture systems. We have undertaken a preliminary pilot trial with encouraging results. Oxygenation was applied to a recirculating aquaculture system via nanobubble injectors for 10 days and fish (yellowtail kingfish) were observed to feed and behave normally when compared to a control group. Before this technology can be considered for broader adoption, a thorough long term investigation needs to be undertaken to assess the long term health effects on fish stock held in nanobubble oxygenated water and the suitability for application of this technology to the aquaculture industry.

Objectives

1. To demonstrate the efficacy of nanobubble technology for use in finfish aquaculture by:i) assessing the health, growth and feed conversion efficiencies of fish cultured in a recirculating aquaculture system at different temperatures, salinities and stocking densities exposed to nanobubblesii) determining the effect of nanobubble oxygenation on waste water treatment efficiencies in a recirculating aquaculture system.iii) providing a preliminary cost benefit analysis on the implementation of nanobubble aeration to an aquaculture system

Final report

Author: Igor Pirozzi
Final Report • 2025-02-21 • 2.76 MB
2019-039-DLD.pdf

Summary

Nanobubble (NB) technology, i.e. the production of ultrafine bubbles with diameters <1 µm, is an emerging field which has the potential to greatly improve oxygenation efficiencies in aquaculture production. Before this technology can be considered for adoption by the aquaculture industry, a thorough assessment of the health and growth effects on fish stock held in NB oxygenated water is required. Three trials were conducted to compare NB technology with conventional oxygenation setup (ceramic diffusers and air stones, oxygen gas and air) in a recirculating aquaculture system (RAS) under a number of different aquaculture scenarios testing i) stocking density, ii) salinity, and iii) temperature. 
Environment
PROJECT NUMBER • 2019-020
PROJECT STATUS:
COMPLETED

Development of a user-friendly Management Strategy Evaluation framework for Queensland’s rocky reef fishery

Researchers from the Queensland Department of Agriculture and Fisheries have developed a Management Strategy Evaluation (MSE) tool to test the effects of potential management changes on the spawning biomass of Snapper and Pearl Perch in Queensland.
ORGANISATION:
Department of Primary Industries (QLD)
Communities
PROJECT NUMBER • 2014-226
PROJECT STATUS:
COMPLETED

Indigenous Fishing Subprogram: Improving the recognition and integration of traditional owner customary fishing and ecological knowledge in the management of Victoria’s fisheries

With growing recognition of Traditional Owner groups across Victoria as native title claims are being resolved. There is a strong interest from within Victorian Traditional Owner community to actively participate in the management of Victoria&rsquo;s fisheries. However, despite these strongly held...
ORGANISATION:
Agriculture Victoria
Industry
Environment
PROJECT NUMBER • 2015-216
PROJECT STATUS:
COMPLETED

Informing inter-jurisdictional snapper management in eastern Australia

Snapper has been fished since the early development of the colony around Sydney Harbour in the late 18th century, but it was the arrival of steam power in the 1860&rsquo;s that enabled fishers to start regularly targeting the abundant schools of snapper occurring in the deep-water fishing grounds...
ORGANISATION:
Department of Primary Industries (QLD)
SPECIES

WAFIC, Recfishwest, DPIRD and SSPWA attendance at 'Engaging Leaders Innovating Across Sectors' (ELIAS)

Project number: 2017-250
Project Status:
Completed
Budget expenditure: $18,000.00
Principal Investigator: Alex Ogg
Organisation: Western Australian Fishing Industry Council Inc (WAFIC)
Project start/end date: 19 Jul 2018 - 27 Feb 2019
Contact:
FRDC

Need

In November 2017 the WA RAC published the priority: Develop an efficient and equitable process for allocation and re-allocation of fisheries resources, across sectors, to align with legislative requirements of the Aquatic Resource Management Act 2016.

Another of the WARAC priorities recently has been to assist small fisheries improve viability and a strategic approach to fisheries development on the South Coast of WA.

Objectives

1. Develop capacity to work across commercial fishing, recreational fishing and government to solve complex problems using innovative methods
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