Haemodynamic investigation of flow diverter stents for the treatment of intracranial aneurysms. This project will explore the engineering of a flow diverter, an endovascular device for the treatment of brain aneurysms. The project will determine the optimal design of new types of flow diverters, which in turn could improve the effectiveness of treatments, thus reducing the associated costs of cerebral haemorrhage and stroke.
Age Determination Of Oreo Dory Species By Radiometric Analysis
Funder
Fisheries Research and Development Corporation
Funding Amount
$92,562.50
Summary
Objectives: 1. To determine the age of spiky dory Noecyttus rhomboidalis smooth dory Pseudocyttus maculatus and black dory Allocyttus spp. by radionuclide analysis.
Biological And Fisheries Data For Managing Deep Sea Crabs In Western Australia
Funder
Fisheries Research and Development Corporation
Funding Amount
$347,674.00
Summary
Since the snow crab is presumably slow growing and long-lived and therefore vulnerable to overfishing, there is a pressing need for collecting baseline biological and fishery data that can be used to produce a preliminary stock assessment for assisting in the management and conservation of this species in Western Australia. Mechanisms for obtaining data on size compositions and catch statistics for the fishery in the early stages of its development need to be established so that the extent to wh ....Since the snow crab is presumably slow growing and long-lived and therefore vulnerable to overfishing, there is a pressing need for collecting baseline biological and fishery data that can be used to produce a preliminary stock assessment for assisting in the management and conservation of this species in Western Australia. Mechanisms for obtaining data on size compositions and catch statistics for the fishery in the early stages of its development need to be established so that the extent to which large animals are depleted as a result of fishing pressure can be determined.
In the early stages of the proposed work, it will be necessary to determine the catch and distribution of the commercial fishery and the size (carapace length), sex ratio and relative abundance by depth of the crabs that form the basis for the fishery. This will enable any future changes that occur in these characteristics as a result of fishing pressure to be detected.
Since snow crabs are expected to have long intermoult periods, it will be necessary to tag crabs as soon as possible to provide, in the relatively near future, information on growth rates, movements, and estimates of yield and eggs (or spawning biomass) per recruit.
Accurate information is needed on the size at which snow crabs first reach maturity and how frequently spawning occurs within a year.
Information is required on the size of gaps in traps that would allow sublegal sized crabs to escape and thereby prevent unnecessary mortality and displacement.
A basic stock assessment is required to meet Environment Australia’s Schedule 4 exemption in the short term and Fisheries WA/Environment Australia requirements whch are to be initiated in December 2002. Objectives: 1. Implement a voluntary log book system in which fishers will record the number, size and location of capture of crabs and establish the data bases that are necessay to record and maintain logbook, size composition and tagging data. 2. Collect and process biological research data on the size, weight, moult stage, shell state, sex ratio, gonadal weight and gonadal stage of snow crabs caught by commercial fishers at regular intervals during the year. 3. Determine the relative abundance of snow crabs in the various depths and regions in which this species is fished. 4. Determine the patterns of movement, growth and frequency of spawning of snow crabs. 5. Determine the size of snow crabs at first maturity. 6. Determine the effectiveness of the escape gaps currently in use in the fishery in reducing the catch of sub-legal sized crystal crabs. 7. Undertake an experiment to infer short-term movement and changes in density resulting from localized depletion of the fishing grounds. 8. Produce an initial assessment of the status of the snow crab stock on the west coast of WA. Read moreRead less
Dependence Of Commercially Import Fish On Krill As A Food Source In South-east Tasmania
Funder
Fisheries Research and Development Corporation
Summary
Objectives: 1. Estimate abundance & production of krill (especially Nyctiphanes australis) in an area of sth-east Tas coastal waters. 2. Study growth & moulting of N. australis to provide data for production estimates. 3. Identify the major predators & estimate their consumption
Objectives: 1. Define unit stocks for fisheries management of northern populations of Spanish mackerel, barramundi and blacktip shark. 2. Use electrophoretic analysis of protein variation to characterise each sp, examine for stock heterogeneity, define geographical boundaries
Movement Patterns And Stock Structure Of Australian Sardine (Sardinops Sagax) Off South Australia And The East Coast: Implications For Future Stock Assessment And Management
Funder
Fisheries Research and Development Corporation
Funding Amount
$248,797.00
Summary
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 ....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. Read moreRead less
Stock Discrimination Of Pilchards By Stable Isotope Ratio Analysis
Funder
Fisheries Research and Development Corporation
Funding Amount
$16,000.00
Summary
Objectives: 1. To measure the 18O/16o and 13C/12c ratios in otolith carbonate from a range of sizes of pilchards from four locations at 3 monthly intervals through one year, and thereby to test whether isotope-based locations signatures persist through time and thus demonstrate the presence of separate populations within the pilchard distribution.
The Age, Growth, Reproductive Biology And Stock Assessment Of Grass Emperor, Lethrinus Laticaudis In Shark Bay, WA
Funder
Fisheries Research and Development Corporation
Funding Amount
$309,307.00
Summary
Black snapper stocks in the inner gulfs of Shark Bay are under increasing pressure by the recreational fishing sector. This is a result of both the increasing number of recreational anglers fishing in the Shark Bay area and the reduction in the stock size of pink snapper. Current management for the recreational sector consists of a bag limit of 8 fish and size limit of 28 cm. However, there are no validated or reliable biological data on the age, growth and reproductive biology on this specie ....Black snapper stocks in the inner gulfs of Shark Bay are under increasing pressure by the recreational fishing sector. This is a result of both the increasing number of recreational anglers fishing in the Shark Bay area and the reduction in the stock size of pink snapper. Current management for the recreational sector consists of a bag limit of 8 fish and size limit of 28 cm. However, there are no validated or reliable biological data on the age, growth and reproductive biology on this species in order to develop stock assessment models and evaluate current management regulations. Objectives: 1. Examine stock delineation using stable isotope analysis. 2. Determine the age structure of black snapper . 3. Determine the growth rate of black snapper. 4. Determine the reproductive biology of the black snapper. 5. Develop a stock assessment model for black snapper from the inner gulfs of Shark Bay. Read moreRead less
Development and characterization of a technology platform to study the mechanisms of scaffold/Bone Morphogenic Proteins (BMP) augmented large segmental bone healing. This project will increase understanding of bone engineering and in doing so will lead to superior treatments for bone defects. Such a treatment would be valuable in addressing the ever-increasing problems of diminished productivity and reduced quality of life associated with bone disorders as the population ages. The multidisciplin ....Development and characterization of a technology platform to study the mechanisms of scaffold/Bone Morphogenic Proteins (BMP) augmented large segmental bone healing. This project will increase understanding of bone engineering and in doing so will lead to superior treatments for bone defects. Such a treatment would be valuable in addressing the ever-increasing problems of diminished productivity and reduced quality of life associated with bone disorders as the population ages. The multidisciplinary and international team will be valuable in establishing Australia's prominence in this field and training the next generation of young scientists and engineers. The technologies developed will be of great interest to a large number of research groups and companies worldwide and will assist with fostering international collaboration and placing Australia at the forefront of this emerging field.Read moreRead less
Spatial Scales Of Exploitation Among Populations Of Demersal Scalefish: Implications For Wetline Management
Funder
Fisheries Research and Development Corporation
Funding Amount
$514,378.00
Summary
To address the urgent issue of impending over-exploitation of reef-fish resources, the WA Minister for Fisheries has recently approved the Wetline Review to bring WA’s wetline fisheries under more effective management, beginning with the West Coast Bio-region. The West Coast Bio-region supports 56% of WA’s wetline fishing fleet (valued at ~ $4 million dollars), 76% of recreational boat-based line-fishers and most of the charter boat fishery. The issues at stake here are commercial and charte ....To address the urgent issue of impending over-exploitation of reef-fish resources, the WA Minister for Fisheries has recently approved the Wetline Review to bring WA’s wetline fisheries under more effective management, beginning with the West Coast Bio-region. The West Coast Bio-region supports 56% of WA’s wetline fishing fleet (valued at ~ $4 million dollars), 76% of recreational boat-based line-fishers and most of the charter boat fishery. The issues at stake here are commercial and charter fishing viability, enjoyment of recreational fishing by the majority of WA’s population, provision of local world-class table fish for the non-fishing public and equitable allocation of resources among all sectors. The key needs for management of the west coast demersal scalefish fishery are - * A better understanding of the spatial scales of the two major fish populations along the West Coast Bio-region to determine their appropriate geographical scales for management. * Knowledge of the regional variation in the biology of snapper and WA dhufish along the West Coast Bio-region. Age and growth of temperate snapper has not been studied in WA. * Estimating the exploitation status of the stocks of the major species, snapper and WA dhufish. * To ensure that sustainability of the resource is the foundation of all management options by educating the stakeholders about the biology and the exploitation of the finfish resources and by involving them in the management process. Objectives: 1. To examine the level of intermixing among populations of both pink snapper and WA dhufish along the West Coast to determine the appropriate geographical scales for management. 2. To determine whether there are regional differences in the biology of pink snapper and dhufish populations along the West Coast, particularly in growth and reproduction (timing of /size at maturity). 3. To evaluate the spatial variation in the exploitation status of pink snapper and dhufish within the West Coast Bio-region. 4. To develop a suite of alternative management scenarios to assist the multiple fishing sectors of the Bio-region to select and adopt an optimal management strategy. Read moreRead less