Old brains, new data - early evolution of structural complexity in the vertebrate head. Of the all the complex structures biology has provided, the evolution of the vertebrate brain and its sensory organs is perhaps the most enigmatic. The fossil record occasionally provides a chance to trace this evolution, but only with the use of novel X-ray scanning techniques can these secrets be detailed in three dimensions. Exploiting the exceptional fossil record from Australia and China, this team will ....Old brains, new data - early evolution of structural complexity in the vertebrate head. Of the all the complex structures biology has provided, the evolution of the vertebrate brain and its sensory organs is perhaps the most enigmatic. The fossil record occasionally provides a chance to trace this evolution, but only with the use of novel X-ray scanning techniques can these secrets be detailed in three dimensions. Exploiting the exceptional fossil record from Australia and China, this team will for the first time collect a vast comparative data base which will yield clues on the early evolution of the ear, eye and brain. Read moreRead less
Molecular evolution and toxinology of colubrid snake venom toxins. This project proposes to examine the origin and evolution of venom systems in advanced snakes (Caenophidia) focusing on the colubrid radiation comprising the rear-fanged species. Demonstration by us of the presence of a potent postsynaptic neurotoxin in the Durvenoy's secretions of the Asian ratsnake Elaphe radiata, an archetypal non-venomous colubrid species, forced a fundamental rethink of venom evolution. The toxin is homologo ....Molecular evolution and toxinology of colubrid snake venom toxins. This project proposes to examine the origin and evolution of venom systems in advanced snakes (Caenophidia) focusing on the colubrid radiation comprising the rear-fanged species. Demonstration by us of the presence of a potent postsynaptic neurotoxin in the Durvenoy's secretions of the Asian ratsnake Elaphe radiata, an archetypal non-venomous colubrid species, forced a fundamental rethink of venom evolution. The toxin is homologous with the three finger toxins, previously thought unique to elapids, and supports the role of venom as a key evolutionary innovation in the diversification of advanced snakes. This project extends this work to other species and toxin families.Read moreRead less
Environmental stress profiling (ESP): Molecular profiling of sediment microbial communities for improved biological monitoring in aquatic ecosystems. Water resource management is a key issue for environmental sustainability in Australia and strategies that include ecological principles are important to improve present conditions and reduce further degradation. Current biomonitoring methods suffer from a low degree of sensitivity that can seriously impact their effectiveness as early warning sign ....Environmental stress profiling (ESP): Molecular profiling of sediment microbial communities for improved biological monitoring in aquatic ecosystems. Water resource management is a key issue for environmental sustainability in Australia and strategies that include ecological principles are important to improve present conditions and reduce further degradation. Current biomonitoring methods suffer from a low degree of sensitivity that can seriously impact their effectiveness as early warning signals of ecological disturbance. We propose to combine molecular and ecotoxicological assessment of the effect of zinc toxicity on microbial communities to provide rapid pollution sensitive bioassessment. Our research will lead to a better understanding of the cause and effect of heavy metal pollution within aquatic ecosystems and greater insight on how to reduce and repair the negative effects.Read moreRead less
A molecular phylogenetic study of the evolution of ecological specialisation in Amphibolurinae agamid lizards. This project will use a comparative approach that combines ecological, morphological and molecular data to investigate evolutionary patterns of ecological specialisation in Australian agamid lizards. Understanding the evolutionary pattern of ecological specialisation, or the directional course of evolution, is an unresolved question in evolutionary biology. Quantitative investigations o ....A molecular phylogenetic study of the evolution of ecological specialisation in Amphibolurinae agamid lizards. This project will use a comparative approach that combines ecological, morphological and molecular data to investigate evolutionary patterns of ecological specialisation in Australian agamid lizards. Understanding the evolutionary pattern of ecological specialisation, or the directional course of evolution, is an unresolved question in evolutionary biology. Quantitative investigations of ecological specialisation are rare because research has been limited by molecular and analytical techniques. Recent advances in population genetics and bio-statistics will allow me to test hypotheses concerning the directionality of evolution. This study will provide a foundation for future research in evolutionary biology and greatly expand our knowledge of agamid biodiversity.Read moreRead less
Testing Theories of Historical Divergence using South Eastern Australian Reptiles. The processes that serve to create species diversity must also be preserved in order to allow evolution to continue. My study will clarify the number and distribution of water skink species in south eastern Australia, a biologically diverse, yet under studied area of Australia. I will also be looking at processes, such as dispersal, that determine patterns of species distribution over time. These lizards are also ....Testing Theories of Historical Divergence using South Eastern Australian Reptiles. The processes that serve to create species diversity must also be preserved in order to allow evolution to continue. My study will clarify the number and distribution of water skink species in south eastern Australia, a biologically diverse, yet under studied area of Australia. I will also be looking at processes, such as dispersal, that determine patterns of species distribution over time. These lizards are also found on mountain tops and may be affected by global warming. Understanding how climate change has affected these lizards in the past may help us to predict how climate changes will affect them in the future and better enable us to conserve these and other species in the future.Read moreRead less
Improving Insect-based Technology for Minimum Death Time Estimates in Forensic Investigations in Australia. This research will provide more accurate, narrower death time estimates for Australia. Focusing enquiries more accurately around the death time will result in significant financial savings in homicide investigations. Court evidence based on insects will become more robust, thus improving prosecution success. Partnerships will also be enhanced between laboratories with common aims, but di ....Improving Insect-based Technology for Minimum Death Time Estimates in Forensic Investigations in Australia. This research will provide more accurate, narrower death time estimates for Australia. Focusing enquiries more accurately around the death time will result in significant financial savings in homicide investigations. Court evidence based on insects will become more robust, thus improving prosecution success. Partnerships will also be enhanced between laboratories with common aims, but different experience and expertise, thereby avoiding research duplication and producing synergistic effects of collaboration. Casework methodology in Australia will become better aligned, thus avoiding courtroom conflicts between practitioners. Finally, high quality graduate students will be trained in entomological and forensic sciences.Read moreRead less
Evolution of the unique fauna of the Great Artesian Basin mound springs: the impact of aridification and climate change. The mound springs of the Great Artesian Basin represent one of Australia's most unique environments and are of national biodiversity, cultural and economic significance. Their conservation is a major issue following listing of the springs as a threatened ecological community. As economic productivity in the GAB intensifies, the mound springs are under increasing threat from es ....Evolution of the unique fauna of the Great Artesian Basin mound springs: the impact of aridification and climate change. The mound springs of the Great Artesian Basin represent one of Australia's most unique environments and are of national biodiversity, cultural and economic significance. Their conservation is a major issue following listing of the springs as a threatened ecological community. As economic productivity in the GAB intensifies, the mound springs are under increasing threat from escalating groundwater use. The results of this study on the evolution of two crustacean groups will provide significant biological information for management plans, facilitating conservation of mound springs communities, and helping to understand the impacts of water extraction and climate change on this unique habitat.Read moreRead less
Australia's exceptional Palaeozoic fossil fishes, and a Gondwana origin for land vertebrates. The 370 million-year-old Gogo deposit in WA has produced the World's best-preserved fossil fishes of Devonian age. New discoveries of related forms in eastern and central Australia document the deep history of Australia's unique vertebrate fauna, and provide new evidence on the evolution of the first jaws and limbs in vertebrates. They indicate that the first land animals may have evolved on the Austral ....Australia's exceptional Palaeozoic fossil fishes, and a Gondwana origin for land vertebrates. The 370 million-year-old Gogo deposit in WA has produced the World's best-preserved fossil fishes of Devonian age. New discoveries of related forms in eastern and central Australia document the deep history of Australia's unique vertebrate fauna, and provide new evidence on the evolution of the first jaws and limbs in vertebrates. They indicate that the first land animals may have evolved on the Australian landmass. These remarkably preserved, information-rich skulls and braincases of some of the oldest known vertebrate fossils provide unique data on early evolution of the head and brain; they are held in national collections as a significant contribution to both National and World Heritage.Read moreRead less
Was there an unusual environment with equally remarkable inhabitants in Early Cretaceous southeast Australia? After more than two decades of effort, there is strong evidence that Early Cretaceous southeastern Australia was inhabited by a remarkably diverse polar terrestrial vertebrate fauna adapted to the coldest environment known to have existed anywhere in the late Mesozoic. In this unusual terrestrial habitat for that time, temnospondyl amphibians and allosaurid dinosaurs survived long ....Was there an unusual environment with equally remarkable inhabitants in Early Cretaceous southeast Australia? After more than two decades of effort, there is strong evidence that Early Cretaceous southeastern Australia was inhabited by a remarkably diverse polar terrestrial vertebrate fauna adapted to the coldest environment known to have existed anywhere in the late Mesozoic. In this unusual terrestrial habitat for that time, temnospondyl amphibians and allosaurid dinosaurs survived long after becoming extinct elsewhere. Here, too, are found what may be the oldest known and yet remarkably advanced placental mammals, the group to which we belong. To further corroborate or refute these hypotheses, some of which are highly contentious, is the aim of this project.Read moreRead less