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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 puzzle of Metazoan life history evolution: are feeding larvae always primitive? Most marine animals have a complex life-cycles with alternating pelagic larvae and benthic adults. An theory about animal life-history evolution states that feeding larvae are always primitive and larval feeding is lost but not gained. This hypothesis is based in part on studies on the 'classical' trochophore of marine worms such as Serpulidae, a group with both feeding and non-feeding larvae. We intend to establ ....The puzzle of Metazoan life history evolution: are feeding larvae always primitive? Most marine animals have a complex life-cycles with alternating pelagic larvae and benthic adults. An theory about animal life-history evolution states that feeding larvae are always primitive and larval feeding is lost but not gained. This hypothesis is based in part on studies on the 'classical' trochophore of marine worms such as Serpulidae, a group with both feeding and non-feeding larvae. We intend to establish a detailed phylogeny for Serpulidae and assess the evolution of larvae in the group. If feeding larvae are shown to be secondary this will raise doubts about established theories of animal evolution.Read moreRead less
The functional genomics of locust migratory behaviour. Unravelling the molecular genetic basis of locust migratory behaviour will place Australia at the forefront of international biological research and simultaneously contribute to the development of new and safer ways to manage these notorious agricultural pests. We will use genomics and gene expression analyses to identify the suite of genes involved in the behavioural changes that catalyse locust swarm formation and migration. This collabor ....The functional genomics of locust migratory behaviour. Unravelling the molecular genetic basis of locust migratory behaviour will place Australia at the forefront of international biological research and simultaneously contribute to the development of new and safer ways to manage these notorious agricultural pests. We will use genomics and gene expression analyses to identify the suite of genes involved in the behavioural changes that catalyse locust swarm formation and migration. This collaborative study will enhance international relations with China, foster the development of gene-focused locust control strategies, and provide an exemplar study of an important and complex problem faced by Australia and international community.Read moreRead less
Heterarchical modelling of nutritional ecology: from individuals to communities. The project will combine advances in nutritional theory, agent-based modelling and landscape ecology to produce a modelling framework with which to understand the interrelationships between the physiology and behaviour of individual organisms and the populations, communities and ecosystems in which they reside. The resulting computational model will provide a major new initiative in quantitative ecology and allow sp ....Heterarchical modelling of nutritional ecology: from individuals to communities. The project will combine advances in nutritional theory, agent-based modelling and landscape ecology to produce a modelling framework with which to understand the interrelationships between the physiology and behaviour of individual organisms and the populations, communities and ecosystems in which they reside. The resulting computational model will provide a major new initiative in quantitative ecology and allow specific practical problems to be addressed in relation to agricultural pests, invasive species, conservation biology and animal production systems.Read moreRead less
Ecological and evolutionary impacts of toxic prey. The current invasion of feral cane toads into the Australian wet-dry tropics provides a unique opportunity to study natural selection in action. These highly toxic anurans kill many of the predators that attempt to ingest them. Within two years, the toads will reach a floodplain near Darwin where we are conducting a longterm (already, > 15-year) ecological research program on snakes. The knowledge and data base resulting from this program, pl ....Ecological and evolutionary impacts of toxic prey. The current invasion of feral cane toads into the Australian wet-dry tropics provides a unique opportunity to study natural selection in action. These highly toxic anurans kill many of the predators that attempt to ingest them. Within two years, the toads will reach a floodplain near Darwin where we are conducting a longterm (already, > 15-year) ecological research program on snakes. The knowledge and data base resulting from this program, plus many thousands of individually-marked predators whose home ranges and demographic histories are known, provide a unique opportunity to examine the ecological and evolutionary impact of toads.Read moreRead less
Does size really matter? Selection, constraints and allometry. Australia is internationally recognized for its strong performance in evolutionary biology and quantitative genetics. This study contributes to the advancement of these fields. It is explicitly designed to create selection lines that can be used by developmental biologists, physiologists, geneticists and endocrinologists. This will strengthen links between institutes within Australia and internationally and later allow more applied q ....Does size really matter? Selection, constraints and allometry. Australia is internationally recognized for its strong performance in evolutionary biology and quantitative genetics. This study contributes to the advancement of these fields. It is explicitly designed to create selection lines that can be used by developmental biologists, physiologists, geneticists and endocrinologists. This will strengthen links between institutes within Australia and internationally and later allow more applied questions to be asked. Although this study addresses a basic research question, it uses techniques and statistics that are integral to work selecting for improvement of commercial crops and animals. It therefore provides valuable training opportunities for an essential part of Australia's agricultural sector.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775666
Funder
Australian Research Council
Funding Amount
$200,000.00
Summary
Flora and Fauna Research Facility. Our ability to make informed decisions regarding conservation and management of unique Australian ecosytems depends greatly on our understanding of the organisms inhabiting them. Researchers at the University of Wollongong are addressing this need through a wide range of studies including the: effects of climate change on plants, biology of invasive species, possible causes for declining frog populations, role of the immune system in aging and natural selection ....Flora and Fauna Research Facility. Our ability to make informed decisions regarding conservation and management of unique Australian ecosytems depends greatly on our understanding of the organisms inhabiting them. Researchers at the University of Wollongong are addressing this need through a wide range of studies including the: effects of climate change on plants, biology of invasive species, possible causes for declining frog populations, role of the immune system in aging and natural selection, effects of maternal hormones on offspring, effects of pesticides on native vertebrates, and impacts of bushfires on ecosystems. The infrastructure requested will enable research in these and other important areas.Read moreRead less
Evolutionary genetics of the immune system in social insects. Insects possess efficient innate immunity against pathogens, but social insects are suggested to be vulnerable due to their packed colonies of related individuals. We predict that pathogen pressure varies with life history and microhabitat details, and that this variation will be reflected in the molecular evolutionary rates of immune system genes. Sequence information will be obtained to test these predictions. The results should ....Evolutionary genetics of the immune system in social insects. Insects possess efficient innate immunity against pathogens, but social insects are suggested to be vulnerable due to their packed colonies of related individuals. We predict that pathogen pressure varies with life history and microhabitat details, and that this variation will be reflected in the molecular evolutionary rates of immune system genes. Sequence information will be obtained to test these predictions. The results should be of widespread interest as reflecting the importance of pathogens and life pattern, and increase our knowledge of insect immune systems, potentially enabling circumvention of pest defenses and better protection of beneficial species.Read moreRead less
The evolution of egg retention and sex allocation: a phylogenetic contrasts study using facultatively ovoviviparous thrips. Australian idolothripine thrips provide an unparalleled opportunity for investigating the evolution of reproduction. They constitute the only group to contain many species in which the females choose among live birth, egg laying or both. They also choose the sex of each offspring. We will use phylogenetics and experimentation to understand the evolutionary pressures that le ....The evolution of egg retention and sex allocation: a phylogenetic contrasts study using facultatively ovoviviparous thrips. Australian idolothripine thrips provide an unparalleled opportunity for investigating the evolution of reproduction. They constitute the only group to contain many species in which the females choose among live birth, egg laying or both. They also choose the sex of each offspring. We will use phylogenetics and experimentation to understand the evolutionary pressures that led to and maintain live birth and the allocation of sex. This will produce new insights into fundamental questions about the evolution of animal reproduction. Our collaborative approach will make Australian thrips and research an international cornerstone in the biology of reproductive evolution.Read moreRead less
Evolutionary immunology of social insects. Social insects are particularly abundant in Australia. They live in a wide range of habitats with social systems differing greatly in size and structure. They are both ecologically and economically important because they form a large part of terrestrial ecosystems and control much of the energy flow. Their immune system resembles the immune system of humans. Finding how the social insect immune system evolves will have the potential to help us manag ....Evolutionary immunology of social insects. Social insects are particularly abundant in Australia. They live in a wide range of habitats with social systems differing greatly in size and structure. They are both ecologically and economically important because they form a large part of terrestrial ecosystems and control much of the energy flow. Their immune system resembles the immune system of humans. Finding how the social insect immune system evolves will have the potential to help us manage them better, and yield functional insights into the human innate immune system. Placing the observed patterns in context also involves study of the associated microbes, finds how social insects interact with this important part of the environment, and may assist in land management.Read moreRead less