Some like it hot: invasive species, hybridisation, and a warming world. Temperatures are rising and invasive species are becoming more prevalent. This project aims to understand how climate change and hybridisation between exotic and native marine species leads to rapid adaptation. Using integrative approaches from genomics and physiology and focusing on Australian blue mussels, this proposal will test leading hypotheses about how climate change and hybridisation can enable rapid adaptation and ....Some like it hot: invasive species, hybridisation, and a warming world. Temperatures are rising and invasive species are becoming more prevalent. This project aims to understand how climate change and hybridisation between exotic and native marine species leads to rapid adaptation. Using integrative approaches from genomics and physiology and focusing on Australian blue mussels, this proposal will test leading hypotheses about how climate change and hybridisation can enable rapid adaptation and the spread of exotic species. Outcomes will include strategies for minimising impacts of invasive mussels and boosting warm-temperature adaptation in aquaculture mussels and restored shellfish reefs. This project will yield fundamental insights into how marine species can quickly adapt to warming seas.Read moreRead less
Discovery of pathways to embryogenesis in pathogenic flatworm parasites using microdissection and transcriptomic technologies. The cost to Australia of flatworm parasites to animal production and human health is substantial (hundreds of millions of dollars per year). This research will give new insights into how flatworms reproduce and equip their progeny for survival, providing impetus for new vaccine or drug therapies to be developed. As these pathogens are more significant in Australia's ne ....Discovery of pathways to embryogenesis in pathogenic flatworm parasites using microdissection and transcriptomic technologies. The cost to Australia of flatworm parasites to animal production and human health is substantial (hundreds of millions of dollars per year). This research will give new insights into how flatworms reproduce and equip their progeny for survival, providing impetus for new vaccine or drug therapies to be developed. As these pathogens are more significant in Australia's near neighbours, this project will strengthen Australia's international leadership in this field. Our study will provide, for the first time for any helminth parasite, a freely available genetic database that profiles the gene expression repertoire of individual parasite tissues, a development likely to enhance the international effort in controlling these harmful diseases.Read moreRead less
Insect host/vector genetic responses to rhabdovirus infection. Rhabdoviruses cause important diseases in humans, animals and plants. These viruses are transmitted by insect vectors in which they persist and propagate, an intimate and specific association. Insect-rhabdovirus interactions will be studied at the molecular level using a planthopper-maize rhabdovirus model. Insect genes specifically induced by rhabdovirus infection as well as the viral genes themselves will be identified and characte ....Insect host/vector genetic responses to rhabdovirus infection. Rhabdoviruses cause important diseases in humans, animals and plants. These viruses are transmitted by insect vectors in which they persist and propagate, an intimate and specific association. Insect-rhabdovirus interactions will be studied at the molecular level using a planthopper-maize rhabdovirus model. Insect genes specifically induced by rhabdovirus infection as well as the viral genes themselves will be identified and characterized using genomics and bioinformatics tools. We will extend the same approaches to a comparative analysis of these planthopper genes with other insect-rhabdovirus systems under investigation in our institutes. Identification of viral genes expressed in insects, the insect genes that respond to virus infection, and interpretation of the roles of these genes in insects, may indicate new opportunities to control serious plant and animal diseases through control of virus transmission.Read moreRead less
Tracking origins and spread of Crown-of-Thorns Seastars on the Great Barrier Reef. This proposal aims to uncover the source reefs for Crown-of-Thorns Seastars (CoTS) outbreaks and the main routes of spread through the Great Barrier Reef. Coral eating CoTS pose a significant threat to the Great Barrier Reef. Using population genomics, invasive species genetics, and epidemiology and drawing upon extensive collections of adults and larvae dating from the 1980’s onwards, this project will test promi ....Tracking origins and spread of Crown-of-Thorns Seastars on the Great Barrier Reef. This proposal aims to uncover the source reefs for Crown-of-Thorns Seastars (CoTS) outbreaks and the main routes of spread through the Great Barrier Reef. Coral eating CoTS pose a significant threat to the Great Barrier Reef. Using population genomics, invasive species genetics, and epidemiology and drawing upon extensive collections of adults and larvae dating from the 1980’s onwards, this project will test prominent hypotheses about outbreak origins and subsequent spatial spread of CoTS via larval dispersal. The project expects to clarify the locations and timing of long distance dispersal pathways and to test whether larval detection near reefs can provide an early warning for local outbreaks on these same reefs.Read moreRead less
Beyond the gene: Linking herbivore behaviour to plant defense gene expression. This collaborative project investigates insect herbivore avoidance of plant defence mechanisms. Our project is novel because it integrates changes in the plant at a number of different levels and links them to insect foraging behaviour. Researchers assume that insects respond to plant defences by changing their foraging behaviour. This has not been tested directly. We use the genetically well characterised plant Arabi ....Beyond the gene: Linking herbivore behaviour to plant defense gene expression. This collaborative project investigates insect herbivore avoidance of plant defence mechanisms. Our project is novel because it integrates changes in the plant at a number of different levels and links them to insect foraging behaviour. Researchers assume that insects respond to plant defences by changing their foraging behaviour. This has not been tested directly. We use the genetically well characterised plant Arabidopsis and the world-wide pest Helicoverpa (heliothis) as a model system. Damage caused to crops by insect herbivores is a direct function of behaviour. Understanding this behaviour will lead to improved pest management and reduced economic losses.Read moreRead less
Asexual reproduction in honey bee invaders. This project aims to determine whether thelytokous parthenogenesis (the ability of queens and workers to clone themselves) is a critical factor in the successful establishment of invasive social insects in Australia and elsewhere. When an exotic social insect species arrives in Australia the population will usually expire due to a lack of conspecifics for mating, and severe inbreeding. Nonetheless, a few ant, bee and wasp species have managed to estab ....Asexual reproduction in honey bee invaders. This project aims to determine whether thelytokous parthenogenesis (the ability of queens and workers to clone themselves) is a critical factor in the successful establishment of invasive social insects in Australia and elsewhere. When an exotic social insect species arrives in Australia the population will usually expire due to a lack of conspecifics for mating, and severe inbreeding. Nonetheless, a few ant, bee and wasp species have managed to establish here and are among our worst invasive animals. The project plans to show how the Asian hive bee became established in Queensland and to assess the risks it poses to industry and the environment. This research should help the nation to respond more effectively to the next social insect invader.Read moreRead less
Deciphering genome function in animal development. The normal development of an embryo depends on complex and finely tuned gene regulatory mechanisms. In this Fellowship, I will use sophisticated new technologies to discover which of our 30,000 genes is important for embryonic development, reveal the roles of these genes, and identify the control mechanisms that can go awry to cause birth defects. Our research will suggest new ways to diagnose and deal with these conditions, and will be applicab ....Deciphering genome function in animal development. The normal development of an embryo depends on complex and finely tuned gene regulatory mechanisms. In this Fellowship, I will use sophisticated new technologies to discover which of our 30,000 genes is important for embryonic development, reveal the roles of these genes, and identify the control mechanisms that can go awry to cause birth defects. Our research will suggest new ways to diagnose and deal with these conditions, and will be applicable to stem cell technologies, tissue regeneration, cancer biology, conservation, pest management and livestock breeding, thus delivering significant economic and social benefits to Australia. Read moreRead less
Why do only some exotics become invasive? Combining ecological and genomic approaches to address alternative hypotheses in a recent Australian weed. This project will specifically test alternative hypotheses about how weeds become invasive. As invasive weeds affect both agricultural and native ecosystems equally, research on understanding the mechanisms of weed invasion is critical. Outcomes will benefit Australia by allowing better prioritisation of management against exotic plants already i ....Why do only some exotics become invasive? Combining ecological and genomic approaches to address alternative hypotheses in a recent Australian weed. This project will specifically test alternative hypotheses about how weeds become invasive. As invasive weeds affect both agricultural and native ecosystems equally, research on understanding the mechanisms of weed invasion is critical. Outcomes will benefit Australia by allowing better prioritisation of management against exotic plants already in the country by providing predictive tools to estimate likelihood of spread. For formal Pest Risk Analysis by regulators (eg Biosecurity Australia), our project will provide genomic tools by which the potential weediness of a regulated plant can be assessed through genetic screening, and forms part of an international effort to identify 'weedy genes'. Read moreRead less
The genomics of adaptation in Wolbachia pipientis, an emerging biocontrol agent. Australians are increasingly exposed to insect-transmitted diseases such as dengue fever. Novel biocontrol methods using the bacterium Wolbachia aim to control insect populations to reduce disease transmission. Our research will be the first to investigate genomic variation and the process of adaptation to new insect hosts in Wolbachia. The novel data and understanding of evolutionary processes we generate will be c ....The genomics of adaptation in Wolbachia pipientis, an emerging biocontrol agent. Australians are increasingly exposed to insect-transmitted diseases such as dengue fever. Novel biocontrol methods using the bacterium Wolbachia aim to control insect populations to reduce disease transmission. Our research will be the first to investigate genomic variation and the process of adaptation to new insect hosts in Wolbachia. The novel data and understanding of evolutionary processes we generate will be critical for screening bacterial biocontrol candidates and designing biocontrol release strategies. It will also strengthen the position of Australian research as a world-leader in the fusion of post-genomics and applied microbiology. Read moreRead less
Insect age: an ecological genomics approach to understanding host-parasite interactions. The importance of insect age (or the age structure of a population of insects) in understanding relationships between insects and their abiotic and biotic environment has been stressed in many theoretical studies but seldom directly tested. This is because few tools exist that can accurately measure the age of a wild-caught insect with any accuracy. In this proposal we plan to use a genomics approach to deve ....Insect age: an ecological genomics approach to understanding host-parasite interactions. The importance of insect age (or the age structure of a population of insects) in understanding relationships between insects and their abiotic and biotic environment has been stressed in many theoretical studies but seldom directly tested. This is because few tools exist that can accurately measure the age of a wild-caught insect with any accuracy. In this proposal we plan to use a genomics approach to develop tools that can be used to efficiently determine the age of an insect and then apply these tools to better understand the relationship between insect age and the ability of an insect to transmit pathogens to humans, livestock or plants. These tools will also have future applicability in developing new approaches to control insect transmitted disease as well as provide methodology to determine the effectiveness of current control programs that seek to kill pest insect populations of agricultural or public health significance.Read moreRead less