Can inbreeding avoidance cause the evolution of sex-biased dispersal? This project aims to combine unique long-term data with a novel Citizen Science approach to seek to provide the first complete test of the hypothesis that inbreeding avoidance can cause one of the best known patterns in mammal and bird societies - sex differences in when and how far juveniles disperse. Dispersal is a critically important ecological and evolutionary process, as it influences the fate of populations, and also de ....Can inbreeding avoidance cause the evolution of sex-biased dispersal? This project aims to combine unique long-term data with a novel Citizen Science approach to seek to provide the first complete test of the hypothesis that inbreeding avoidance can cause one of the best known patterns in mammal and bird societies - sex differences in when and how far juveniles disperse. Dispersal is a critically important ecological and evolutionary process, as it influences the fate of populations, and also determines the individuals with which a disperser will spend the remainder of its life. It therefore shapes the likelihood that kin will interact to cooperate or compete, and determines the pool of individuals with which the disperser can mate.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE130100174
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Family matters: kin selection and competition in cooperative breeders. In the absence of dispersal of one or both sexes kin competition and inbreeding are expected to increase. This project will study group living fairy-wrens, which vary in whether or not one sex disperses. The results will shed new light on how species overcome the negative aspects of this behaviour and inform us about the consequences for populations and habitat management.
Evolution of anisogamy and the sexes. This project aims to study the evolution of anisogamy, which defines males and females by the size of their gametes – females’ large eggs and males’ small sperm. Most multicellular organisms have different sized gametes, and this size difference has affected the evolution of life on the planet. Theoretical arguments about why two sexes are ubiquitous have not been tested empirically, mainly because of technical difficulties in experimentally generating diffe ....Evolution of anisogamy and the sexes. This project aims to study the evolution of anisogamy, which defines males and females by the size of their gametes – females’ large eggs and males’ small sperm. Most multicellular organisms have different sized gametes, and this size difference has affected the evolution of life on the planet. Theoretical arguments about why two sexes are ubiquitous have not been tested empirically, mainly because of technical difficulties in experimentally generating different sized gametes. This project will use algae and cell sorting technology to test this. The expected outcome is a greater understanding of how and why the sexes evolved, as well as developing biofuel production methods by paving the way for improvements in algal productivity.Read moreRead less
Larval dispersal and settlement mechanisms in the first genome-enabled Australian marine animal, Amphimedon queenslandica (Porifera). We know remarkably little about the lives of the enigmatic animals that live on our stunning coral reefs, except that many have a tiny larval stage that travels far beyond where the adults can go. This project explores how genomes and environment work together to ensure that larvae spread their species around to keep our reefs vibrant and diverse.
Discovery Early Career Researcher Award - Grant ID: DE140100505
Funder
Australian Research Council
Funding Amount
$394,620.00
Summary
Is plant organisation the fountain of eternal youth? The decline in performance at advanced ages, senescence, affects life quality, lifespan and productivity. It is believed that this phenomenon is universal, including all species from microbes to humans. Yet, some plants do not exhibit senescence. This project will identify the mechanisms that enable plants to escape senescence. Using a unique global demographic database, the project will determine whether, how and when senescence has evolved a ....Is plant organisation the fountain of eternal youth? The decline in performance at advanced ages, senescence, affects life quality, lifespan and productivity. It is believed that this phenomenon is universal, including all species from microbes to humans. Yet, some plants do not exhibit senescence. This project will identify the mechanisms that enable plants to escape senescence. Using a unique global demographic database, the project will determine whether, how and when senescence has evolved across 850 plant species. It will also experimentally test how drought, nutrients and resprouting affect senescence in two mallee Eucalyptus species in the Simpson Desert. This research will provide new insights into the evolution of senescence and will elucidate how some plants escape a supposedly unavoidable fate.Read moreRead less
Science on the continental shelf: securing our deep-sea biodiversity for the future. This project signals the start of exciting new research using manned submersibles to explore and describe the rich biodiversity inhabiting Australia’s deep-sea continental shelf. The outcomes will provide a sound basis for managing these environmental treasures against the pressing need to use the oil and gas reserves that lie under the seabed.