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The link between environmental stress and disease onset in prawn aquaculture. The federal government has set a target for prawn aquaculture production to increase fourfold by 2010. A major barrier is disease: losses of 20% of production to viral diseases are not uncommon. To be internationally competitive, Australia needs to develop high health production systems. Most prawn stock carry chronic viral infections, but only exhibit disease symptoms following environmental stress. This project will ....The link between environmental stress and disease onset in prawn aquaculture. The federal government has set a target for prawn aquaculture production to increase fourfold by 2010. A major barrier is disease: losses of 20% of production to viral diseases are not uncommon. To be internationally competitive, Australia needs to develop high health production systems. Most prawn stock carry chronic viral infections, but only exhibit disease symptoms following environmental stress. This project will identify environmental stressors that activate viral disease in Penaeus monodon. Outcomes will be incorporated into on-farm managerial regimes to minimize risk of crop loss to disease. Development of biomarkers as indicators of stress related risks may be commercialized.Read moreRead less
Evolution of the biofabrication of mineralized structures in animals. Shells and skeletons are produced by a wide range of animals. These highly-order crystalline structures are genetically-encoded and produce high-performance composite materials that exceed present capabilities in human engineering. This international collaboration will elucidate the molecular mechanisms controlling the fabrication of these architectures. This knowledge will contribute significantly to the development of materi ....Evolution of the biofabrication of mineralized structures in animals. Shells and skeletons are produced by a wide range of animals. These highly-order crystalline structures are genetically-encoded and produce high-performance composite materials that exceed present capabilities in human engineering. This international collaboration will elucidate the molecular mechanisms controlling the fabrication of these architectures. This knowledge will contribute significantly to the development of materials for advanced electronics and energy transducers, human bone therapeutics and marine-based products such as pearls and cements, through the identification of genes underlying biofabrication networks and the development of in vitro bioproduction systems.Read moreRead less
Variation in larval gene expression in a marine invertebrate: implications for population divergence via differential settlement response. Evolutionary and ecological functional genomics is an emerging field that integrates gene profiling technologies with experimental and field approaches of ecology and evolution. I take this approach to address a key problem in marine invertebrate biology: how do larvae respond to their environment and how does variation in this response influence the distribu ....Variation in larval gene expression in a marine invertebrate: implications for population divergence via differential settlement response. Evolutionary and ecological functional genomics is an emerging field that integrates gene profiling technologies with experimental and field approaches of ecology and evolution. I take this approach to address a key problem in marine invertebrate biology: how do larvae respond to their environment and how does variation in this response influence the distribution and evolution of a species? I will use a marine gastropod (abalone) model, for which there exists substantial development and population genetic data, and established aquaculture methodologies. Outcomes of this study will enhance knowledge of the stock structure of this and other commercial fisheries, as well as aquaculture efficiency.Read moreRead less
Early animal evolution: reconstructing the last common metazoan ancestor through the analysis of developmental and structural genes in sponges. All animals, from the simplest invertebrates to humans, arose from a common ancestor. Reconstruction of this ancestor requires the comparison of metazoan developmental genetic architectures. Here we contribute to this pursuit by studying a phylogenetically and biological appropriate metazoan system - marine sponge embryos and larvae. Using high-throughp ....Early animal evolution: reconstructing the last common metazoan ancestor through the analysis of developmental and structural genes in sponges. All animals, from the simplest invertebrates to humans, arose from a common ancestor. Reconstruction of this ancestor requires the comparison of metazoan developmental genetic architectures. Here we contribute to this pursuit by studying a phylogenetically and biological appropriate metazoan system - marine sponge embryos and larvae. Using high-throughput gene profiling techniques, we will analyse the developmental genetics underlying the sponge body plan. Commonalities shared between sponges and more sophisticated animals are likely to have been present in the "genetic toolkit" of the most ancient metazoan ancestor and, as such, is the genetic foundation from which all animal biodiversity arose.Read moreRead less