57 results

Optimisation of treatment of Cryptocaryon irritans in Barramundi aquaculture

Project number: 2018-100
Project Status:
Current
Budget expenditure: $415,057.00
Principal Investigator: Marty R. Deveney
Organisation: University of Adelaide
Project start/end date: 30 Sep 2021 - 29 Aug 2024
Contact:
FRDC

Need

Significant losses of farmed barramundi have occurred in coastal marine aquaculture sites utilising marine water sources due to Cryptocaryon irritans infestations. The disease costs have had substantial impacts on commercial aquaculture operations. Cryptocaryon irritans has a direct life cycle with an adult in the skin or gills of the fish and asexual reproduction in the environment away from the fish. The life cycle of C. irritans is temperature and host dependant and treatment must be timed with critical phases of the life history to maximise efficacy. This project will establish this timing to provide guidelines for optimised treatment.

The existing treatments have substantial costs ($3K+/treatment) and a sub-optimal profile for environmental release with high toxicity and environmental persistence. This project will optimise doses of existing treatments, and identify and assess new treatments. Products identified as effective and safe will have optimised guidelines developed for delivery to ensure the best outcome for farms and the environment. Such improvements will support further expansion of the finfish aquaculture industry in Northern Australia.

Objectives

1. Describe the life cycle of Australian C. irritans isolates from Barramundi aquaculture, and describe relevant treatment intervals for different temperatures for C. irritans to maximise benefit from each treatment
2. Screen candidate treatments to identify new products for further assessment
3. Establish efficacy and safety of optimised doses for current treatments and selected candidate treatments in laboratory and small-scale field trials
4. Optimise delivery under field conditions for delivery of new treatments
Environment
PROJECT NUMBER • 2018-210
PROJECT STATUS:
COMPLETED

Long-term analysis of the sea-state in the Great Australian Bight

This report provides a detailed characterisation, assessment and prediction of the meteorological and oceanographic conditions that will be encountered by, and have the potential to impact, future petroleum activities in the Great Australian Bight. In the absence of direct, long-term...
ORGANISATION:
University of Adelaide
Industry
PROJECT NUMBER • 2019-147
PROJECT STATUS:
COMPLETED

Risk factors and management strategies associated with summer mortality in Australian abalone

In this project, we reviewed the scientific literature and collaborated with Australian abalone growers to develop a case definition for summer mortality. The case definition developed for summer mortality is as follows: i. Chronic mortality of unknown cause (if in doubt take this to mean...
ORGANISATION:
University of Adelaide
Industry
PROJECT NUMBER • 2019-106
PROJECT STATUS:
COMPLETED

Minor use permit for oxytetracycline in non-salmonid finfish

There are no registered or permitted antimicrobial products approved by the Australian Pesticide and Veterinary Medicine Authority (APVMA) for treatment of bacterial infections in finfish. This project developed an application for a minor-use permit (MUP) for the use of oxytetracycline (OTC) to...
ORGANISATION:
University of Adelaide
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