Pair bonding: is it all in the brain? This project aims to understand the interaction between classic pair bonding neural circuits, parasites, and the immune system in sleepy lizards. Social bonds are a cornerstone of human societies, especially true of the pair bond and this project expects to generate knowledge to help understand why healthy adult pair bonds are the single best predictor of longevity in humans. The expected outcomes of this project are to reveal the mechanistic basis of pair b ....Pair bonding: is it all in the brain? This project aims to understand the interaction between classic pair bonding neural circuits, parasites, and the immune system in sleepy lizards. Social bonds are a cornerstone of human societies, especially true of the pair bond and this project expects to generate knowledge to help understand why healthy adult pair bonds are the single best predictor of longevity in humans. The expected outcomes of this project are to reveal the mechanistic basis of pair bonding by identifying the brain regions, cell types and neurochemicals that promote pair bonding behaviour — for the first time in a wild animal. This project should provide significant benefits by increasing our knowledge of how pair bonds promote wellness.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE120102821
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Molecular genetic adaptive processes in natural co-evolution between rabbits and the rabbit haemorrhagic disease virus. This project will use extensive sampling and long-term field data to reveal ongoing co-evolutionary mechanisms behind the increasing resistance of pest Australian wild rabbits against a viral pathogen. The results will increase the understanding of evolutionary mechanisms in nature and will provide basic information for biological pest control of rabbits.
Coevolution of sundew bugs and sundews. This project aims to conduct a study of insect-plant interactions to determine if insects and plants coevolve or if they diversify by other evolutionary processes. Insect-plant coevolution is a hotly contested field in evolutionary biology. In Australia, a remarkable interaction exists between carnivorous plants and a group of bugs that steal the plant’s prey. This system offers a great opportunity to test competing coevolutionary theories through a combin ....Coevolution of sundew bugs and sundews. This project aims to conduct a study of insect-plant interactions to determine if insects and plants coevolve or if they diversify by other evolutionary processes. Insect-plant coevolution is a hotly contested field in evolutionary biology. In Australia, a remarkable interaction exists between carnivorous plants and a group of bugs that steal the plant’s prey. This system offers a great opportunity to test competing coevolutionary theories through a combination of historical and ecological approaches. The project expects to showcase the evolution and uniqueness of Australia’s native biota.Read moreRead less
Can parasites cause host population divergence? . Parasites have been proposed to be drivers of population divergence, and ultimately speciation, yet the dynamics of this process are not well understood. This project will utilise new genomic techniques, novel hybrid zone analyses, and data on mate choice, to investigate the hypothesis that parasites drive population divergence through an interaction with immune response genes in the sleepy lizard Tiliqua rugosa. This species provides an unpreced ....Can parasites cause host population divergence? . Parasites have been proposed to be drivers of population divergence, and ultimately speciation, yet the dynamics of this process are not well understood. This project will utilise new genomic techniques, novel hybrid zone analyses, and data on mate choice, to investigate the hypothesis that parasites drive population divergence through an interaction with immune response genes in the sleepy lizard Tiliqua rugosa. This species provides an unprecedented system, backed by 37 years of long term host-parasite and behavioural data, and recent genetic analyses. This project intends to produce significant data to allow an examination of the early stages of host-parasite evolution in action, providing novel insights into the speciation process. Read moreRead less
What drives parasite spread through social networks: lessons from lizards. Australia's biodiversity is continually threatened by new epidemics of local and foreign diseases and parasites. This project will enhance our understanding of how these diseases spread, allowing more effective controls to be developed to protect wildlife species, animal populations and, ultimately, Australian ecosystems.
Parasite transmission through social networks in the pygmy bluetongue lizard. Australia's biodiversity is continually threatened by new epidemics of diseases and parasites, some local, others from overseas. This project will provide information on how they spread so that more effective management of these diseases can be developed to protect wildlife species, animal populations and, ultimately, Australian ecosystems.
A study of the nongenomic action of Vitamin D: proposed role of the nuclear VDR and downstream signalling molecules. Vitamin D (1,25D) activates genes in the nucleus through the vitamin D receptor (VDR). 1,25D can also elicit rapid responses at the plasma membrane. This action is critical to the activation of nuclear genes. We hypothesise that a proportion of the nuclear VDR is located at the plasma membrane where it stimulates downstream signalling molecules eg Ras, ERK1/2 and ERK5. We plan to ....A study of the nongenomic action of Vitamin D: proposed role of the nuclear VDR and downstream signalling molecules. Vitamin D (1,25D) activates genes in the nucleus through the vitamin D receptor (VDR). 1,25D can also elicit rapid responses at the plasma membrane. This action is critical to the activation of nuclear genes. We hypothesise that a proportion of the nuclear VDR is located at the plasma membrane where it stimulates downstream signalling molecules eg Ras, ERK1/2 and ERK5. We plan to explore this hypothesis and to identify the signalling molecules. We will also investigate our novel finding that a specific Ras isoform is involved in ERK5 activation. The work will provide new information on signalling pathways.Read moreRead less
Regulatory mechanisms for calcium release-activated calcium channels. Store-operated calcium channels play a central role in the functions of all animal cells. They participate in generating the cellular responses to hormones, growth factors and other physiological stimuli. The aims of this project are to elucidate the mechanisms that regulate the activity of store-operated channels and how their properties can be modulated by different pharmacological agents. Using chiefly the techniques of ele ....Regulatory mechanisms for calcium release-activated calcium channels. Store-operated calcium channels play a central role in the functions of all animal cells. They participate in generating the cellular responses to hormones, growth factors and other physiological stimuli. The aims of this project are to elucidate the mechanisms that regulate the activity of store-operated channels and how their properties can be modulated by different pharmacological agents. Using chiefly the techniques of electrophysiology and molecular biology we expect to learn the fundamental mechanisms that modulate the opening and closing of store-operated calcium channels and to gain an important information that can be used for determining the molecular structure of these channelsRead moreRead less
Second messenger-activated calcium channels in liver cells. This project concerns second messenger-activated calcium channels, part of the family of hormone-activated calcium channels which are essential to the functions of all animal cells. The aims are to elucidate the properties of a novel "large conductance" Ca2+ channel (using maitotoxin as an artificial activator), an inositol 1,4,5-trisphosphate-activated calcium channel, and the calcium channel formed by the transient receptor potential ....Second messenger-activated calcium channels in liver cells. This project concerns second messenger-activated calcium channels, part of the family of hormone-activated calcium channels which are essential to the functions of all animal cells. The aims are to elucidate the properties of a novel "large conductance" Ca2+ channel (using maitotoxin as an artificial activator), an inositol 1,4,5-trisphosphate-activated calcium channel, and the calcium channel formed by the transient receptor potential-1 (TRP-1) protein in hepatocytes. The electrophysiological properties, mechanisms of activation and intracellular trafficking of the channels will be investigated. It is anticipated the results will provide basic information on the physiological functions of second messenger-activated calcium channels. This will benefit the understanding of liver function, hepatotoxicity in animals, animal production and the development of pharmaceuticals in animal husbandary.Read moreRead less
The bHLH.PAS transcription factors: Determinants of dimerization specificity and high affinity DNA binding. This program of fundamental research will advance our knowledge of the way essential proteins act to correctly regulate critical biological processes. A detailed understanding of these processes at the molecular level has the potential to contribute to the design of pharmaceutical compounds to assist in the treatment of diseases such as ischaemia, myocardial infarction and tumour progress ....The bHLH.PAS transcription factors: Determinants of dimerization specificity and high affinity DNA binding. This program of fundamental research will advance our knowledge of the way essential proteins act to correctly regulate critical biological processes. A detailed understanding of these processes at the molecular level has the potential to contribute to the design of pharmaceutical compounds to assist in the treatment of diseases such as ischaemia, myocardial infarction and tumour progression. The work will contribute to the training of one or more graduate students in a technologically advancing and internationally competitive field.Read moreRead less