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New targets for antiviral therapies. The ability of dangerous viruses to cause lethal disease depends on their capacity to evade the immune system of infected hosts. This project will uncover at the molecular level the strategies used by viruses to disable immune responses; this will identify new ways to treat incurable diseases, by disabling the virus' defences against the immune system.
Development of electrophoretic cell sorters. The aim of this research is to develop the next generation of cell sorters to scale production of viable sperm and other cell types. Our approach is to understand the factors that control the migration of cells in an electric field so that we can design large-scale devices to purify cells using electrophoretic separation. The outcomes of this research enable large-scale production of viable sperm for human and animal-assisted conception, benefiting in ....Development of electrophoretic cell sorters. The aim of this research is to develop the next generation of cell sorters to scale production of viable sperm and other cell types. Our approach is to understand the factors that control the migration of cells in an electric field so that we can design large-scale devices to purify cells using electrophoretic separation. The outcomes of this research enable large-scale production of viable sperm for human and animal-assisted conception, benefiting infertile couples and the livestock breeding industry. Successful development of an efficient cell separation technology would add significant commercial value to the Australian biomanufacturing sector. Read moreRead less
The molecular basis of sperm competition. This project aims to unravel the molecular basis of reproductive conflicts. Males compete for paternity and this continues after mating if females copulate and receive semen from multiple males. In ants and bees, molecules in males’ ejaculates recognise and kill rival males’ sperm. Reproductive proteins in leaf cutter ants’ seminal fluid may be the molecular agents of sperm competition. This project will investigate reproductive proteins and their functi ....The molecular basis of sperm competition. This project aims to unravel the molecular basis of reproductive conflicts. Males compete for paternity and this continues after mating if females copulate and receive semen from multiple males. In ants and bees, molecules in males’ ejaculates recognise and kill rival males’ sperm. Reproductive proteins in leaf cutter ants’ seminal fluid may be the molecular agents of sperm competition. This project will investigate reproductive proteins and their functioning and effects on reproductive success. This project will show how reproductive conflicts over paternity operate on the protein level and may lead to novel avenues for future pest control.Read moreRead less
Evolutionary proteomics of social insects. This project aims to understand the molecular mechanisms that affect fertility in honeybees and leaf-cutting ants by identifying the function of proteins in male and female secretions related to insemination and sperm storage. The understanding of these general principles will have important applications for honeybee breeding.
Linking evolutionary and molecular biology to safeguard Australian honeybees. Honeybee populations are declining globally but their pollination services are of central importance for food production. This project will study honeybee proteins that influence both fertility and immunity and their effects in vivo. This knowledge is of interest for the bee breeding industry to avoid or combat bee declines in managed Australian bees.
The importance of DNA methylation in response to environmental changes. This project aims to investigate the importance of DNA methylation, a process whereby gene expression can be altered without changes in the DNA code, in regulating our responses to environmental challenges. It plans to do so using well-validated models of adult exposure to high fat diet or psychological stress in mice and tissue-specific (liver and brain) deletion of the major methylation enzymes. It aims to compare function ....The importance of DNA methylation in response to environmental changes. This project aims to investigate the importance of DNA methylation, a process whereby gene expression can be altered without changes in the DNA code, in regulating our responses to environmental challenges. It plans to do so using well-validated models of adult exposure to high fat diet or psychological stress in mice and tissue-specific (liver and brain) deletion of the major methylation enzymes. It aims to compare functional, gene expression and methylation status after such challenges in intact and methylase deleted animals to determine how vital this process really is. This work has major implications for our understanding of epigenetics, and the ways in which genes interact with the environment especially in times of change.Read moreRead less
Targeting TGF-beta proteins to control animal reproduction. This project aims to develop a suite of novel biologics to control fertility in female mammals. This project expects to demonstrate that targeting a single class of ovarian proteins will enhance or inhibit egg production. The expected outcomes of this project are to (1) transform the breeding of livestock animals, which should provide significant benefits to the agricultural industry, through increased herd/flock sizes, and (2) provide ....Targeting TGF-beta proteins to control animal reproduction. This project aims to develop a suite of novel biologics to control fertility in female mammals. This project expects to demonstrate that targeting a single class of ovarian proteins will enhance or inhibit egg production. The expected outcomes of this project are to (1) transform the breeding of livestock animals, which should provide significant benefits to the agricultural industry, through increased herd/flock sizes, and (2) provide a non-surgical method of contraception in companion/feral species, which should address the large unmet need for fertility control in these animals.
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Deconstructing the neural circuits regulating appetite. This project aims to expand our knowledge about the neural circuits that influence a feeding response in the absence of emotional or cognitive obstacles. Feeding behaviour is a fundamental physiological process in all animals. Despite the seemingly simple endpoint, feeding behaviour is affected by numerous factors including stress and motivation that can inhibit feeding behaviour. This knowledge is critical to maximise growth and survival i ....Deconstructing the neural circuits regulating appetite. This project aims to expand our knowledge about the neural circuits that influence a feeding response in the absence of emotional or cognitive obstacles. Feeding behaviour is a fundamental physiological process in all animals. Despite the seemingly simple endpoint, feeding behaviour is affected by numerous factors including stress and motivation that can inhibit feeding behaviour. This knowledge is critical to maximise growth and survival in many Australian sectors including agriculture, conservation and basic science.Read moreRead less
The immune response as a determinant of female reproductive investment. Aims: This project will define how ‘cryptic female choice’ affects reproductive outcomes through immune recognition of embryo histocompatibility genes, to modulate maternal nutrient provision and fetal growth.
Significance: The research will tackle an important knowledge gap in animal reproduction science, where poorly-understood male-female compatibility effects cause variation in breeding efficiency with major economic an ....The immune response as a determinant of female reproductive investment. Aims: This project will define how ‘cryptic female choice’ affects reproductive outcomes through immune recognition of embryo histocompatibility genes, to modulate maternal nutrient provision and fetal growth.
Significance: The research will tackle an important knowledge gap in animal reproduction science, where poorly-understood male-female compatibility effects cause variation in breeding efficiency with major economic and environmental impact.
Expected outcomes: We expect to generate new understanding of the genes, immune response elements, and vascular changes that explain compatibility effects.
Benefits: The results will inform strategies to improve fertility in livestock animals, and in rare and threatened species.
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Investigating a new way in which diet impacts animal biology. This project aims to investigate the importance of a new way in which diet can alter animal biology. High fat or high sugar diets increase the binding of products of metabolism to chromosomes, which can completely alter the way that DNA is packaged and read. This project will use cell culture, rodent and fly models to identify the regions of the genome that are most affected by the new process. The project will also determine whether ....Investigating a new way in which diet impacts animal biology. This project aims to investigate the importance of a new way in which diet can alter animal biology. High fat or high sugar diets increase the binding of products of metabolism to chromosomes, which can completely alter the way that DNA is packaged and read. This project will use cell culture, rodent and fly models to identify the regions of the genome that are most affected by the new process. The project will also determine whether the cell is harmed, or in fact harnesses the process to control development or metabolism. This project has implications for our understanding of the ways in which genes interact with the environment especially in times of change.Read moreRead less