Improving the growth rate and flesh quality of cultured Barramundi: Investigating the effects of temperature, diet, and population. Barramundi fillet is one of the premier seafoods available in Australia and the decline of wild fisheries has increased the demand for the cultured product. Accordingly, there has been a rapid growth of the barramundi farming industry, but competition from cheaper overseas imports has cut the sale price and profit margins of local growers. By developing methods to i ....Improving the growth rate and flesh quality of cultured Barramundi: Investigating the effects of temperature, diet, and population. Barramundi fillet is one of the premier seafoods available in Australia and the decline of wild fisheries has increased the demand for the cultured product. Accordingly, there has been a rapid growth of the barramundi farming industry, but competition from cheaper overseas imports has cut the sale price and profit margins of local growers. By developing methods to increase growth rates, this research has the potential to substantially increase profit margins by reducing production costs and increasing turnover. Improvement of flesh quality will also increase the attractiveness of barramundi fillet. Increasing the viability of barramundi culture in Australia will attract more growers and increase employment opportunities.Read moreRead less
Regulation of salt gland activity in the estuarine crocodile: phenotypic plasticity and control mechanisms. The estuarine crocodile excretes excess sodium and chloride ions through salt glands located on the tongue, enabling the crocodile to live in seawater. This study will investigate the regulation of salt gland secretory capacity and activity, by examining both the phenotypic plasticity of the gland to changes in environmental salinity and diet, and by determining the neural/humoral mech ....Regulation of salt gland activity in the estuarine crocodile: phenotypic plasticity and control mechanisms. The estuarine crocodile excretes excess sodium and chloride ions through salt glands located on the tongue, enabling the crocodile to live in seawater. This study will investigate the regulation of salt gland secretory capacity and activity, by examining both the phenotypic plasticity of the gland to changes in environmental salinity and diet, and by determining the neural/humoral mechanisms controlling secretory rate. In vivo measurements of blood flow and salt gland secretory rate, together with perfused gland preparations will reveal extrinsic and intrinsic factors controlling salt gland activity and the degree of coupling between blood flow and secretory rate.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989859
Funder
Australian Research Council
Funding Amount
$1,000,000.00
Summary
A Multi-Resolution X-ray Microtomography Facility (NanoCT & MicroCT) for Non-Destructive 3D Characterisation. X-ray microtomography platforms are applicable to a wide diversity of research across many of the national research priority areas. The research outlined will provide insights into bone cancer and osteoporosis, promote breakthroughs in the understanding of tumour biology and drive new developments in novel biomaterials, all of which have significant national health benefits. In dentistr ....A Multi-Resolution X-ray Microtomography Facility (NanoCT & MicroCT) for Non-Destructive 3D Characterisation. X-ray microtomography platforms are applicable to a wide diversity of research across many of the national research priority areas. The research outlined will provide insights into bone cancer and osteoporosis, promote breakthroughs in the understanding of tumour biology and drive new developments in novel biomaterials, all of which have significant national health benefits. In dentistry, research supported by this instrumentation will provide Australians with improvements to their dental health. Furthermore applications to industrial materials are providing Australian industries with better characterisation of their products that is leading to improved export performance and consequent improvement in Australia's balance of trade.Read moreRead less
Relationships between insulin resistance, diet and obesity in ponies and horses. There are an estimated 1.2 million horses in Australia, and the horse industry is estimated to contribute over $6.3 billion to the economy. Laminitis is a significant health and welfare problem in Australia, as it is worldwide, causing pain and lameness, loss of use, and sometimes necessitating euthanasia. Laminitis is one of the most common reasons for horse owners to seek veterinary attention, and diet and obesity ....Relationships between insulin resistance, diet and obesity in ponies and horses. There are an estimated 1.2 million horses in Australia, and the horse industry is estimated to contribute over $6.3 billion to the economy. Laminitis is a significant health and welfare problem in Australia, as it is worldwide, causing pain and lameness, loss of use, and sometimes necessitating euthanasia. Laminitis is one of the most common reasons for horse owners to seek veterinary attention, and diet and obesity increasingly predispose to this condition. Since treatment of laminitis is difficult, prevention is crucial. The outcomes from this project will include the provision of more specific advice on dietary and exercise management to vets and horse owners to reduce the incidence and impact of laminitis on the horse industry.Read moreRead less
FERTILIZATION IN VIVO AND IN VITRO IN AUSTRALIAN MARSUPIALS. Using reproductive technology previously undeveloped in Australian marsupials this study addresses the most significant question still unresolved in marsupial reproductive biology - 'How does fertilization occur?' We propose to investigate the morphological and functional characteristics of fertilisation and its roles in early development in marsupials, the uniqueness of these events and their evolutionary significance. These findings ....FERTILIZATION IN VIVO AND IN VITRO IN AUSTRALIAN MARSUPIALS. Using reproductive technology previously undeveloped in Australian marsupials this study addresses the most significant question still unresolved in marsupial reproductive biology - 'How does fertilization occur?' We propose to investigate the morphological and functional characteristics of fertilisation and its roles in early development in marsupials, the uniqueness of these events and their evolutionary significance. These findings will not only further our knowledge of reproduction in marsupials and shed light on the evolutionary factors underlying sperm and egg design but will provide tools for assisted breeding programs for threatened wildlife and for the regulation of over abundant species.Read moreRead less
Neurotrophic factors for pelvic autonomic neurons: the role of neurturin. This project is about pelvic parasympathetic neurons, which are responsible for involuntary activities such as bladder voiding and penile erection. We are interested in the neurotrophic factors that determine survival of these neurons during early mammalian development and keep them healthy in adults. Little is known about ?parasympathetic neurotrophic factors? in general. However we have recently discovered that the prote ....Neurotrophic factors for pelvic autonomic neurons: the role of neurturin. This project is about pelvic parasympathetic neurons, which are responsible for involuntary activities such as bladder voiding and penile erection. We are interested in the neurotrophic factors that determine survival of these neurons during early mammalian development and keep them healthy in adults. Little is known about ?parasympathetic neurotrophic factors? in general. However we have recently discovered that the protein neurturin is very important in the pelvic parasympathetic system. We will determine exactly how neurturin affects pelvic neurons and how it interacts with other neurotrophic factors. Our results will fill a major gap in our knowledge of fundamental neurobiology.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775598
Funder
Australian Research Council
Funding Amount
$1,000,000.00
Summary
High-Resolution Transmission Electron Tomographic Facility for Nanoanalytical Characterisation in the Life and Material Sciences. The requested instrument will allow researchers in New South Wales to (i) visualize biological and physical samples in three-dimensions by electron tomography and modeling and (ii) image samples in a near-natural state and at high-resolution by cryogenic techniques. This essential research platform will provide novel information that faithfully presents both the surfa ....High-Resolution Transmission Electron Tomographic Facility for Nanoanalytical Characterisation in the Life and Material Sciences. The requested instrument will allow researchers in New South Wales to (i) visualize biological and physical samples in three-dimensions by electron tomography and modeling and (ii) image samples in a near-natural state and at high-resolution by cryogenic techniques. This essential research platform will provide novel information that faithfully presents both the surface and internal structure of samples down to the nanometre scale, enabling structural research to the highest scientific standards. The resulting knowledge is essential to diverse areas that range from development of cures to diabetes and cancer to creation of environmentally-friendly industrial catalysts to design of new nanoparticles and biosensors.Read moreRead less
A contractile cochlear frame - a possible new mechanism of sound adaptation. It is generally accepted that the rigid frame that harbours sensory structures in the hearing organs of modern higher vertebrates has only a passive supporting role. We have discovered a contractile component in the cartilaginous cochlear frame of the lizard Teratoscincus scincus and demonstrated that the tonus of the contractile tissue can be regulated. We hypothesize a new, previously unknown mechanism of slow mechani ....A contractile cochlear frame - a possible new mechanism of sound adaptation. It is generally accepted that the rigid frame that harbours sensory structures in the hearing organs of modern higher vertebrates has only a passive supporting role. We have discovered a contractile component in the cartilaginous cochlear frame of the lizard Teratoscincus scincus and demonstrated that the tonus of the contractile tissue can be regulated. We hypothesize a new, previously unknown mechanism of slow mechanical adaptation in the vertebrate hearing organ. The aim of the proposed project is to examine this hypothesis in more detail.
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FATIGUE IN VERTEBRATE TENDONS: BIOMECHANICAL AND STRUCTURAL CORRELATES OF ONTOGENETIC AND ADAPTIVE CHANGE. Tendons are important vertebrate tissues, but little is known about their mechanical properties under fatigue-loading. Recent research has shown that dramatic differences in fatigue properties occur and that these appear to be linked to the functional roles of tendons. This project uses a variety of approaches to explore how mechanical and structural properties of tendons change during g ....FATIGUE IN VERTEBRATE TENDONS: BIOMECHANICAL AND STRUCTURAL CORRELATES OF ONTOGENETIC AND ADAPTIVE CHANGE. Tendons are important vertebrate tissues, but little is known about their mechanical properties under fatigue-loading. Recent research has shown that dramatic differences in fatigue properties occur and that these appear to be linked to the functional roles of tendons. This project uses a variety of approaches to explore how mechanical and structural properties of tendons change during growth, maturation and adaptation to different loading environments, and the cellular basis of fatigue resistance. An understanding of fatigue properties from cellular to tissue levels has significance in the areas of general biology, materials science and biomedical science.Read moreRead less
The co-expression of visual pigments in a single photoreceptor: environmental regulation and spectral tuning. The light sensitive cells (photoreceptors) in the vertebrate retina contain filters (oil droplets) and visual pigments (opsins). These structures tune the incoming light and initiate the visual process, respectively. Exciting new research reveals that some vertebrates express more than one opsin within a single photoreceptor. We plan to examine the regulation of single and two co-express ....The co-expression of visual pigments in a single photoreceptor: environmental regulation and spectral tuning. The light sensitive cells (photoreceptors) in the vertebrate retina contain filters (oil droplets) and visual pigments (opsins). These structures tune the incoming light and initiate the visual process, respectively. Exciting new research reveals that some vertebrates express more than one opsin within a single photoreceptor. We plan to examine the regulation of single and two co-expressed opsin genes by manipulating the light environment. We expect to determine the environmental triggers for visual pigment tuning and the effects of co-expression on colour vision.Read moreRead less