Contextualising shellfish food safety in Northern Australia

Project number: 2020-021
Project Status:
Current
Budget expenditure: $147,000.00
Principal Investigator: Sarah C. Ugalde
Organisation: University of Tasmania
Project start/end date: 31 Dec 2020 - 29 Jun 2022
Contact:
FRDC
SPECIES

Need

The emerging edible oyster industry in northern Australia involves Aboriginal communities, industry and governments and is working towards improvements in productions systems, biosecurity and capacity development. Initial volumes produced by this developing industry are likely to be small scale, targeting local markets, however there is significant potential to expand overtime to service the broader Australian and international markets.

To enable industry access to supply these markets there is a need to ensure appropriate food safety. Preliminary shellfish quality assurance assessments have been conducted at oyster farming trials in Western Australia and the Northern Territory. However, there remains a gap in the knowledge of shellfish food safety risks and the most appropriate way to administer a shellfish food safety program in Northern Australia.

Information on the specific food safety risks in tropical Australia to inform the application or contextualise ASQAP in Northern Australia remains a gap. There is also a further need to consider how ASQAP can be applied to a developing industry in a remote context. Tropical Australia has unique challenges of temperature, environment, limited infrastructure and remoteness. The emerging tropical oyster industry requires an assessment of the risks and options to manage the sale of an initial small-scale production of farmed bivalve shellfish produced in Northern Australia.

Objectives

1. Perform an assessment of food safety concerns and associated risks in tropical Australia
2. Provide recommendations on appropriate harvest area classification systems (based on water and/or meat results) and monitoring and risk management protocols for oyster farming in tropical Australian environmental and remote contexts
3. Develop models for shellfish food safety programs in tropical Australian conditions

Related research

Industry
Adoption
Adoption
PROJECT NUMBER • 2022-133
PROJECT STATUS:
COMPLETED

Sponsorship of World Aquaculture 2023

1. Support organisation of World Aquaculture 2023
ORGANISATION:
Associated Advertising and Promotions Pty Ltd

Assessing the benefits of sea urchin processing waste as an agricultural fertiliser and soil ameliorant

Project number: 2019-128
Project Status:
Current
Budget expenditure: $199,996.00
Principal Investigator: Nigel Swarts
Organisation: University of Tasmania (UTAS)
Project start/end date: 1 Nov 2020 - 29 Aug 2023
Contact:
FRDC

Need

The primary need of this project is to facilitate a profitable Longspined Sea Urchin fishery to move the industry away from subsidies. A large-scale sustainable fishery is seen as the most feasible and sustainable way to apply downward pressure on the rapidly expanding Sea Urchin population in Tasmania. Longspined Sea Urchin populations have grown to some 20 million (5,500 tonnes) and have resulted in 15% of the Tasmania East Coast reefs becoming unproductive urchin barren, up from 3% 15 years ago.

Subsides for the Longspined Sea Urchin harvest commenced in 2016 and in the last 3 years some $500,000 has been spent. This initiated significant investment in the industry to facilitate export market establishment and resulted the 2019 harvest reaching an excess of 550 tonnes, now Tasmania’s 3rd largest wild fishery by weight. However, the industry needs to move away from subsides and waste utilisation is seen a viable option to turn a current financial cost (estimated at $80,000 in 2019 to dump 400 tonnes of waste generated) into an income stream.

FRDC 2016-208 highlighted the significant potential of sea urchin waste utilisation in the agricultural industry and called for commercial upscaling of trials. This project is designed to meet that need. Based on this, the Abalone Industry Reinvestment Fund (AIRF) has committed to providing $538,686 in kind to initiate the project. This whole of project application is to allow multi-season agricultural trials of waste products to obtain scientifically and industry meaningful results, allow testing on perennial crops (such as cherries) and to employ a dedicated post-doctoral researcher on the project.

In the push for sustainably produced food, agricultural industries are demanding alternative nutritional sources to synthetic fertilisers. Urchin waste is comprised of two major parts: gut waste - a nitrogenous rich liquid which can be converted in a stable drench or spray and; shell waste – a calcium and boron rich solid which can be dried and powdered for use as a soil ameliorant. As such this fisheries enhancement project will additionally for fill this agricultural need.

Objectives

1. To develop commercial scale processing equipment of sea urchin waste.
2. Determine the nutrient composition and plant bioavailability of nutrients from two high throughput waste streams: liquid gut waste and dried powdered shell waste
3. Evaluate the agronomic benefits of liquid gut waste as a frost retardant in perennial tree cropping (cherries)
4. Evaluate the agronomic benefits of powdered shell waste as a soil ameliorant in a wide range of annual and perennial cropping systems
5. Undertake a cost benefit analysis comparing fertiliser products (foliar sprays and/or soil conditioners) from this work to other products on the market to assess if the products are commercially viable

Final report

Authors: Harriet Walker Nigel Swarts and John Keane
Final Report • 2024-12-23 • 3.31 MB
2019-128-DLD.pdf

Summary

The report assesses the benefits of products derived from sea urchin waste as fertilisers and soil ameliorants in agriculture and horticulture.
Final Report • 2024-12-23 • 3.31 MB
2019-128-DLD.pdf

Summary

The report assesses the benefits of products derived from sea urchin waste as fertilisers and soil ameliorants in agriculture and horticulture.