Discovery Early Career Researcher Award - Grant ID: DE190100544
Funder
Australian Research Council
Funding Amount
$344,682.00
Summary
The drivers of genome evolution and diversification in marsupials. This project aims to investigate the impact of the four basic forces of evolution, mutation, selection, neutral drift, and gene flow, on the genome. Genome-scale data have a signature of these forces and extracting it would greatly improve the quality of evolutionary models fit to the data, but the framework to identify the evolutionary forces has not been developed. This project will develop tests for assessing the impact of the ....The drivers of genome evolution and diversification in marsupials. This project aims to investigate the impact of the four basic forces of evolution, mutation, selection, neutral drift, and gene flow, on the genome. Genome-scale data have a signature of these forces and extracting it would greatly improve the quality of evolutionary models fit to the data, but the framework to identify the evolutionary forces has not been developed. This project will develop tests for assessing the impact of the primary evolutionary forces on the genome, and test these methods using simulations. The new framework of genomic analysis will be disseminated through an intuitive software package, and will be used to estimate with unprecedented confidence the history of diversification and genome evolution of marsupials.Read moreRead less
Resolving insect evolution. Our poor understanding of the evolution of insects, life’s most successful group, is a huge gap in our knowledge of nature. By analysing genomic data the project will resolve the insect evolutionary tree and discover what drove insect evolution. This will expand our knowledge of how evolution works - a vital part of conserving our biological diversity.
The role of genome reorganisation in adaptation and speciation. Local adaptation and speciation are fundamental evolutionary processes that rely on changes to the genome. However, the role of genome architecture (e.g. chromosomal rearrangements, gene duplications) in driving these processes is poorly understood. This project will use advanced comparative genomics and bioinformatics to examine the role of chromosome rearrangements in driving adaptation and speciation, and evaluate rates of molec ....The role of genome reorganisation in adaptation and speciation. Local adaptation and speciation are fundamental evolutionary processes that rely on changes to the genome. However, the role of genome architecture (e.g. chromosomal rearrangements, gene duplications) in driving these processes is poorly understood. This project will use advanced comparative genomics and bioinformatics to examine the role of chromosome rearrangements in driving adaptation and speciation, and evaluate rates of molecular evolution between the X-chromosome and autosomes. Utilising Australia’s endemic mammalian fauna as a tractable model system, I will link population processes with macro-evolutionary outcomes to show how genome architecture underpins biodiversity.Read moreRead less
The evolution of generalism: why so many polyphagous fruit flies? This project aims to understand why flies that cause maggoty fruit have so frequently evolved the generalist feeding habitat. Insect herbivores make up 50 per cent of eukaryotic species on earth. Nearly all are host specialists, feeding on only one or very few plant species. In stark contrast, 40 per cent of tropical fruit flies are generalists, feeding across many plant families. This project aims to test specific hypotheses to e ....The evolution of generalism: why so many polyphagous fruit flies? This project aims to understand why flies that cause maggoty fruit have so frequently evolved the generalist feeding habitat. Insect herbivores make up 50 per cent of eukaryotic species on earth. Nearly all are host specialists, feeding on only one or very few plant species. In stark contrast, 40 per cent of tropical fruit flies are generalists, feeding across many plant families. This project aims to test specific hypotheses to explain the high frequency of generalism in Bactrocera. Outcomes will significantly advance understanding of the evolution of generalism, and so greatly advance herbivory theory. As Bactrocera are also globally significant horticultural pests, the project will provide under-pinning science for pest management.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150101904
Funder
Australian Research Council
Funding Amount
$385,481.00
Summary
Interactions of sexual selection & ecological divergence during speciation. Understanding the processes driving speciation is fundamental to understanding how biodiversity is generated. The two main forces underlying speciation, ecological divergence and sexual selection, are well characterised, yet how they interact during the speciation process is remarkably poorly understood. This project aims to test hypotheses regarding how ecological divergence and sexual selection interact during speciati ....Interactions of sexual selection & ecological divergence during speciation. Understanding the processes driving speciation is fundamental to understanding how biodiversity is generated. The two main forces underlying speciation, ecological divergence and sexual selection, are well characterised, yet how they interact during the speciation process is remarkably poorly understood. This project aims to test hypotheses regarding how ecological divergence and sexual selection interact during speciation, from its inception to its completion. In doing so, this research aims to identify genomic regions underlying divergence in colour patterns, which are important for ecological and sexual interactions. Consequently, this project will significantly enhance our understanding of ecological and genetic mechanisms underlying speciation.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180101558
Funder
Australian Research Council
Funding Amount
$365,058.00
Summary
The biodiversity consequences of evolutionary innovation. This project aims to increase knowledge of how evolutionary innovations affect biodiversity. This project will focus on a classic example of evolutionary innovation, the specialized throat jaws found in many fish groups, including damselfishes, wrasses, and cichlids. These unique jaws may explain why these fish groups contain so many species and are such successful invasive species in Australia and elsewhere. This project proposes an inte ....The biodiversity consequences of evolutionary innovation. This project aims to increase knowledge of how evolutionary innovations affect biodiversity. This project will focus on a classic example of evolutionary innovation, the specialized throat jaws found in many fish groups, including damselfishes, wrasses, and cichlids. These unique jaws may explain why these fish groups contain so many species and are such successful invasive species in Australia and elsewhere. This project proposes an integrative combination of methods and functional experiments to reveal the biodiversity consequences of evolutionary innovation. It will also enhance Australian biosecurity through the production of new ways to assess invasion risk from aquaculture and aquarium trade species.Read moreRead less
Determining the relative roles of dispersal and vicariance in the assembly of the New Zealand fauna. New fossils from New Zealand's St Bathans Fauna (19-16 million years) will revolutionise our understanding of the shared biodiversity and evolutionary history of New Zealand and Australia through the first views of the origin and evolution of major Gondwanan groups including frogs, crocodiles, birds and bats on the now mostly-drowned continent Zealandia.
Discovery Early Career Researcher Award - Grant ID: DE140100220
Funder
Australian Research Council
Funding Amount
$375,149.00
Summary
How do time, climate change and adaptation shape the assembly and evolution of a diverse continental biota? This project will use new statistical techniques for analysing patterns of biological diversification to test how time, environmental change and evolutionary adaptation shape the accumulation of biodiversity in a continental setting. A supermatrix of genetic and ecological data for Australia's most diverse terrestrial vertebrate group (lizards and snakes) will be compiled. This will allow ....How do time, climate change and adaptation shape the assembly and evolution of a diverse continental biota? This project will use new statistical techniques for analysing patterns of biological diversification to test how time, environmental change and evolutionary adaptation shape the accumulation of biodiversity in a continental setting. A supermatrix of genetic and ecological data for Australia's most diverse terrestrial vertebrate group (lizards and snakes) will be compiled. This will allow the testing of the macroevolutionary responses to key environmental changes through the Cainozoic (rapid climatic transgressions and aridification), the relationship between lineage age and species diversity and the effects of major ecological shifts on rates of speciation, extinction and morphological diversification.Read moreRead less
Testing the links between ecological processes and evolutionary radiations. This project aims to apply recent analytical advances to massive databases of the phylogeny and spatial distributions of mammals, birds and plants, to explore the role of small-scale ecological processes in generating large-scale macroevolutionary patterns. The processes involved in generating large-scale patterns of biodiversity are still not fully understood, but large new biodiversity databases and recent advances in ....Testing the links between ecological processes and evolutionary radiations. This project aims to apply recent analytical advances to massive databases of the phylogeny and spatial distributions of mammals, birds and plants, to explore the role of small-scale ecological processes in generating large-scale macroevolutionary patterns. The processes involved in generating large-scale patterns of biodiversity are still not fully understood, but large new biodiversity databases and recent advances in analytical methods put us in a good position to make significant progress. By integrating two separate research fields, community ecology and macroevolution, this project aims to make a significant contribution to biodiversity theory, and help to develop a more robust scientific foundation for long-range, process-based conservation planning.Read moreRead less
Diversification and conservation of Australian frogs. Australia's 216 known species of frogs are exceptionally diverse, 98 per cent are found nowhere else in the world and many of them are in trouble. This project will test ideas concerning the tempo of Australian frog diversification, identify previously cryptic new species and provide information critical to the conservation of Australia's declining frogs.