40 results
Environment
PROJECT NUMBER • 1986-053
PROJECT STATUS:
COMPLETED

Red spot disease of sea mullet (Mugil cephalus)

Red spot disease (RSD), a cutaneous ulcerative disease of estuarine fish, was first reported from the Burnetfc River in Queensland in 1972. By 1985, when the present application was submitted, seasonally recurrent RSD outbreaks were adversely affecting commercial fisheries in many east coast...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Environment
PROJECT NUMBER • 1989-081
PROJECT STATUS:
COMPLETED

Red spot disease of sea mullet (Mugil cephalus)

Results of a previous FIRTA-funded project (86/53) indicated that red spot disease (RSD), a cutaneous ulcerative disease of estuarine fish, is caused by a number of interacting factors. The study showed that lower catchment rainfall is an important determinant of RSD outbreak occurrence. The study...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Environment

Selective breeding for disease resistance and fast growth in Sydney rock oysters

Project number: 1996-357
Project Status:
Completed
Budget expenditure: $332,308.00
Principal Investigator: John Nell
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 27 Feb 1997 - 18 Mar 2004
Contact:
FRDC

Need

The NSW oyster industry has suffered from QX disease and winter mortality for a very long time. It has responded to these disease challenges by vacating affected leases seasonally or in the case of Georges River by abondoning the infested part of the estuary. The history of inter-estuary transfer of oysters for on-growing has not allowed the development of resistant strains in NSW. However, if resistant strains of oysters are not developed, the industry will have no better management tool available in future than that used in the past, ie moving or selling oysters before a disease outbreak is expected or abondoning oyster leases.

If the opportunity for breeding QX disease resistance in Sydney rock oysters is not taken up, a unique opportunity will be lost, to use breeding lines previously selected for fast growth in the selection for disease resistance. It is important that breeding for QX resistance begins now, before another estuary is infested with this parasite. In Georges River, the industry responded to the QX outbreak by abandoning affected leases.

Growth rates in Sydney rock oysters have been improved by an average of 4% for the first generation of selection in Port Stephens. Now the initial progress has been made and four breeding lines are established, it is important that the momentum is maintained and selective breeding for fast growth is continued. The growth rate of the Port Stephens selection lines can be increased by 4% for each successive generation.

Growth rates in Sydney rock oysters can be improved by both selective breeding (an average of 4% faster growth for the first generation of selection) and triploidy (30-40% faster growth). However, triploids have not previously been produced from improved breeding lines. It is important to determine if improvements in growth rates by these two methods are additive. For example with triploids produced from improved breeding lines, a 30% increase in growth rate with triploidy plus another 8% for two generations of selective breeding may increase growth rates of oysters by 38%.

Objectives

1. Evaluation of the resistance of fourth selected generation Georges River oysters to QX disease and winter mortality against controls
2. Evaluation of the growth rate of fourth selected generation Port Stephens selection line diploids and triploids against non-selected diploid and triploid controls
Industry
PROJECT NUMBER • 2016-200.20
PROJECT STATUS:
COMPLETED

Growing a profitable, innovative and collaborative Australian yellowtail kingfish aquaculture industry: Bringing white fish to the market - RnD4Profit-14-01-027

This project focused on growing the key existing Australian Yellowtail Kingfish (YTK) industry participants, as well as the industry as a whole, and directly addressed FRDC's strategic plan to build Australian sustainable aquaculture development through the activities of the new 'New and Emerging...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Environment
PROJECT NUMBER • 1989-085
PROJECT STATUS:
COMPLETED

Improved diagnosis of the infectious disease epizootic haemopoietic necrosis (EHN) in salmonid fish in Australia

Epizootic haematopoietic necrosis vims (EHNV) was the first virus isolated from finfish in Australia. It causes outbreaks of disease in wild redfin perch (Perca fluviatilis) and also in hatchery reared rainbow trout (Onchorhynchus mykiss). The principal aim of this project, which was to develop a...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Industry
PROJECT NUMBER • 2021-129
PROJECT STATUS:
COMPLETED

Understanding of spatial extent, infection window and potential alternative hosts for the oyster disease QX in Port Stephens

This report details an investigation by the NSW Department of Primary Industries into QX disease in Sydney Rock Oysters (Saccostrea glomerata; SROs) in Port Stephens during the 2022. This followed from the first incursion of this disease in this estuary in August of 2021. QX disease has...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
People
People
PROJECT NUMBER • 2002-661
PROJECT STATUS:
COMPLETED

Aquatic Animal Health Subprogram: enhancing the emergency disease response capability of NSW and Qld Government agencies and industry bodies associated with oyster culture

AQUAPLAN was generated as a National Strategic Plan for Aquatic Animal Health in recognition of the growing importance of protecting fisheries and aquaculture industries from disease. This project allowed NSW Fisheries to begin implementing one component of the National AQUAPLAN objectives,...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Industry
PROJECT NUMBER • 1989-078
PROJECT STATUS:
COMPLETED

Improving prawn hatchery production by reducing losses due to bacterial disease

Bacterial necrosis was the only bacterial disease syndrome seen during monitoring of 8 larval production runs at 2 commercial hatcheries during the study. Results indicated a possible causal relationship between concentrations of one or more components of the "presumptive Vibrio" populations in...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
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