The evolution of land-dwelling fish: contemporary analogues of a critical step in vertebrate evolution. One of the most important ecological transitions in the history of life was the colonization of land by fish in the Devonian. What made these fish move onto land is unknown and impossible to determine entirely from fossils. This project will test several hypotheses using living examples of fish that have made a similar transition to land.
Adaptive evolution of coleoid (cuttlefish, octopus, squid) venoms. This project represents an opportunity for biodiscovery from the venoms of cuttlefish, octopuses and squids. The independent adaptation for venom active at the subzero Arctic and Antarctic polar waters is of particular evolutionary interest. However, their divergent, bioactive compounds are also a rich drug design resource.
The dynamics of evolution: How horizontal gene transfer drives the diversification and adaptation of complex, bacterial communities. The genetic exchange between populations is a prerequisite for the long-term evolution of bacteria, however its short-term dynamics are largely unexplored. This project aims to define the temporal dynamics of gene transfer and how it shapes the genetic composition of entire bacterial communities. Using innovative DNA sequencing technologies and bioinformatics, This ....The dynamics of evolution: How horizontal gene transfer drives the diversification and adaptation of complex, bacterial communities. The genetic exchange between populations is a prerequisite for the long-term evolution of bacteria, however its short-term dynamics are largely unexplored. This project aims to define the temporal dynamics of gene transfer and how it shapes the genetic composition of entire bacterial communities. Using innovative DNA sequencing technologies and bioinformatics, This project aims to offer a significant new understanding of the short-term diversification of communities and how different evolutionary forces shape bacterial function. It will show how bacterial systems can adapt to new environmental conditions and the effect on essential ecosystem functions.Read moreRead less
Identifying the genes and population histories that drive rapid adaptive change and speciation. This project will uncover the genetic variation and demographic histories that allow rapid adaptation and speciation in natural populations. It will leverage the powerful framework provided by Indo-Australian sea snakes, and new gene sequencing technologies, to reconstruct the evolutionary histories of genes, populations and species. Using this data, it will address inter-related key questions that ar ....Identifying the genes and population histories that drive rapid adaptive change and speciation. This project will uncover the genetic variation and demographic histories that allow rapid adaptation and speciation in natural populations. It will leverage the powerful framework provided by Indo-Australian sea snakes, and new gene sequencing technologies, to reconstruct the evolutionary histories of genes, populations and species. Using this data, it will address inter-related key questions that are critical to effective biodiversity conservation but have rarely been evaluated in the same taxon. It will address what genetic changes are involved in adaptive shifts and speciation, whether these originate de novo or from pre-existing variation and how gene flow and changes in population size promote or constrain adaptation and speciation.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100949
Funder
Australian Research Council
Funding Amount
$365,058.00
Summary
Did colour vision evolve in the dark? This project aims to investigate the ability of fishes to perceive colour in dim-light conditions by studying representatives from two delicate and endangered ecosystems, coral reefs (nocturnal fish) and the deep-sea. Through a multidisciplinary approach to understanding colour vision and animal behaviour, this study expects to fill a knowledge gap in visual neuroscience and ecology while adding to the understanding of how marine creatures see and interact. ....Did colour vision evolve in the dark? This project aims to investigate the ability of fishes to perceive colour in dim-light conditions by studying representatives from two delicate and endangered ecosystems, coral reefs (nocturnal fish) and the deep-sea. Through a multidisciplinary approach to understanding colour vision and animal behaviour, this study expects to fill a knowledge gap in visual neuroscience and ecology while adding to the understanding of how marine creatures see and interact. This should provide benefits in conservation and management strategies and may also inspire the development of new sensor technologies.Read moreRead less
Quantitative measures of brain evolution in early vertebrates. Why and how do brains become bigger? Using new quantitative methods of assessing the number of neurons with respect to both brain and body size, the project will trace the ways in which the brain (and its component parts) has evolved in a range of early vertebrates. The results will enable us to trace the evolution of cognitive abilities in animals.
Revealing the structure, evolution and sensitivity of symbioses in basal metazoa. This project will explore the complex interactions between each component of the sponge holobiont (virus, bacteria, sponge) during thermal stress. This will also provide the first molecular assessment of sponge viruses and provide insights into how sponges may adapt to a changing climate.
Understanding the ecological effects of genetic diversity: causes, consequences and relative importance. This project will examine the effect of genetic diversity on key demographic parameters (for example, population growth rates) for organisms from three groups, including a commercially important oyster. This project provides valuable information that can be used by managers of wild and cultivated populations to minimise impacts of human activities and maximise yields.
The functions of reef fish colour patterns: how did the coral trout get its spots? How did the coral trout get its spots? Why are some reef fish striped yellow and blue while others dress in pink and orange blotches? This project goes beyond just interpreting animal colours and uses a new approach to reveal the meanings of whole body patterns. Uniquely, it does so through the eyes of the fish themselves.
The evolution of light detection and its impacts on early vertebrate evolution. The eye is a complex organ crucial for survival. Tracing the evolution of the eye will not only provide basic concepts of how building visual complexity is achieved in nature but also enhance the understanding of the selection pressures driving the radiation of early vertebrates.