Understanding the evolution of the alternation of generations in the land plant life cycle. This project will investigate the genetic basis and evolution of the land plant life cycle, in which both haploid and diploid phases consist of complex multicellular bodies. The project's findings, which will be made using two model laboratory plants, will be applicable to all plants and will help understand important processes such as pollen and seed production.
Discovering sources of individual differences in first language acquisition. This project aims to investigate the processes of language acquisition to support the development of evidence-based strategies for improving children's early language. Some children learn language earlier and more easily than others. Understanding why this is the case is important because successful acquisition is strongly associated with positive life outcomes such as academic achievement and psychological wellbeing. T ....Discovering sources of individual differences in first language acquisition. This project aims to investigate the processes of language acquisition to support the development of evidence-based strategies for improving children's early language. Some children learn language earlier and more easily than others. Understanding why this is the case is important because successful acquisition is strongly associated with positive life outcomes such as academic achievement and psychological wellbeing. This project focuses on typically developing children, investigating how their ability to detect frequently occurring patterns in the environment significantly contributes to their acquisition of grammar in early childhood. The project plans to use an innovative triangulation of experimental methods from developmental psychology, longitudinal analysis and cognitive modelling to drive the development of new models of language acquisition and transform our understanding of both typical and atypical acquisition.Read moreRead less
The Epigenetics of Sex in the Dragon. Genetic codes do not directly translate to phenotypes -- environment acts through epigenetics to modify development. We use advanced molecular techniques to examine how epigenetics responds to temperature to reverse sex in our novel animal model, the dragon lizard. How does the cell sense temperature? Once the extrinsic signal is captured, how does it influence chromatin modification to release or suppress key genes in the sex differentiation pathway? Which ....The Epigenetics of Sex in the Dragon. Genetic codes do not directly translate to phenotypes -- environment acts through epigenetics to modify development. We use advanced molecular techniques to examine how epigenetics responds to temperature to reverse sex in our novel animal model, the dragon lizard. How does the cell sense temperature? Once the extrinsic signal is captured, how does it influence chromatin modification to release or suppress key genes in the sex differentiation pathway? Which sex genes are targets? Epigenetic enzymes are astonishingly conserved, providing exciting opportunities to draw from human systems to unravel novel signatures of temperature-induced sex switching in reptiles. This project will advance knowledge of developmental programming generally.Read moreRead less
Gene-environment interactions in reptile sex determination. Sex in many reptiles-crocodiles, marine and freshwater turtles, lizards, tuatara-depends on temperature in the nest. This project will examine poorly understood interactions between genes and temperature in determining sex expanding knowledge of how reptiles with temperature dependent sex determination can evolve to accommodate environmental change.
Adjustment to retirement through social identity change. This project aims to improve our understanding of the factors governing successful adjustment to retirement. Retirement involves a major life change, to which 30 per cent of people fail to adjust successfully. Previous work in the social identity tradition suggests that the negative effects of significant life changes (eg moving into care) can be buffered by access to social group networks, but this possibility has not been examined in the ....Adjustment to retirement through social identity change. This project aims to improve our understanding of the factors governing successful adjustment to retirement. Retirement involves a major life change, to which 30 per cent of people fail to adjust successfully. Previous work in the social identity tradition suggests that the negative effects of significant life changes (eg moving into care) can be buffered by access to social group networks, but this possibility has not been examined in the context of retirement. This project plans to address this gap through studies that establish the importance of social group factors for successful adjustment among Australian, English, American and Chinese retirees. It also plans to test the efficacy of a new model that seeks to improve adjustment to retirement by incorporating various forms of social planning into preparation for this transition.Read moreRead less
Signalling pathways for sexual differentiation of apicomplexan parasites. This project aims to study the sexual development of apicomplexan parasites, which cause major diseases in humans, livestock and wildlife, including malaria. Only sexually differentiated cells can survive in the mosquito vector and hence this development is essential for the parasite's life-cycle. This project will employ a new approach that separates female from male parasites, thus enabling new information to be gleaned ....Signalling pathways for sexual differentiation of apicomplexan parasites. This project aims to study the sexual development of apicomplexan parasites, which cause major diseases in humans, livestock and wildlife, including malaria. Only sexually differentiated cells can survive in the mosquito vector and hence this development is essential for the parasite's life-cycle. This project will employ a new approach that separates female from male parasites, thus enabling new information to be gleaned about the development of these parasites. The expected outcomes are an understanding of the mechanisms of sexual differentiation and a functional characterisation of novel sex-specific molecules. This will provide significant benefits, such as pivotal prerequisites for new approaches to parasite intervention.Read moreRead less
Was an ancient bird-like sex chromosome system ancestral to reptiles and mammals? Recent discoveries reveal amazing similarity in the sex chromosomes of distantly related animals. This project will use advanced DNA technology to explore diverse sex chromosomes in reptiles to discover whether this signifies ancient and unsuspected common ancestry, or the convergent redeployment of genes and chromosomes predisposed to determine sex.
Enhancing emotion knowledge in pre-schoolers with disruptive behaviour: the role of mother-child emotion talk. How can the mother of a disruptive son help him deal better with his anger and fears? The research identifies aspects of mother-child emotion talk that influence the child's ability to understand negative emotions. It assesses if mothers can alter their emotion talk with their children to improve their child's emotion knowledge and behaviour.
Transitions between modes of sex-determination in a changing world. Sex-determination controls the largest variation within animals—the division into males and females. While the different systems of sex-determination—involving genetic or environmental control—are fairly well understood, transitions between these systems remain enigmatic in evolutionary biology. This project aims to address this gap by revealing the molecular change required to transition between systems, using one of only two k ....Transitions between modes of sex-determination in a changing world. Sex-determination controls the largest variation within animals—the division into males and females. While the different systems of sex-determination—involving genetic or environmental control—are fairly well understood, transitions between these systems remain enigmatic in evolutionary biology. This project aims to address this gap by revealing the molecular change required to transition between systems, using one of only two known lizard species exhibiting both genetic and temperature control of sex. This knowledge will have important implications for species conservation, facilitating predictions of highly biased sex ratios under climate change, plus potential commercial applications for species where production of one sex is favoured.Read moreRead less
Social relations and social engagement in older adulthood: implications for health, well being and cognition. This project will examine the nature of changes in peoples' social networks that occur with age, and the effects of these changes on health and well being in later life. The project will use information collected from several ongoing Australian studies of ageing, and will have important implications for social policy in Australia.