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.
What defines sperm success? The influence of sperm on storage and paternity success in the honeybee Apis mellifera. The honeybee is a species of economic interest and becomes increasingly important for crop pollination, especially in areas where naturally occurring pollinating insects are declining. However, the bee industry struggles to breed sufficient numbers of bees, as climatic changes, parasites and pesticides can kill large numbers of bee hives. Breeding success in honeybees crucially dep ....What defines sperm success? The influence of sperm on storage and paternity success in the honeybee Apis mellifera. The honeybee is a species of economic interest and becomes increasingly important for crop pollination, especially in areas where naturally occurring pollinating insects are declining. However, the bee industry struggles to breed sufficient numbers of bees, as climatic changes, parasites and pesticides can kill large numbers of bee hives. Breeding success in honeybees crucially depends on queens receiving sufficient numbers of viable sperm. The study of honeybee sperm and its possible interactions with the queen can therefore optimize breeding regimes for example by providing ways to estimate male or sperm quality.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.
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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The role of the innate immune response in the asymptomatic nature of viral infections in bats. Bats are natural reservoirs to a variety of viruses, including many that are lethal in humans and other mammals. This project will generate fundamental information on the mechanisms involved in the asymptomatic nature of viral infections in bats and contribute towards the development of new antiviral strategies for other susceptible species.