A5036818723- Genetic diversity and population structure
- Animal Behavior and Reproduction
- Avian ecology and behavior
- Wildlife Ecology and Conservation
- Bird parasitology and diseases
- Wildlife Conservation and Criminology Analyses
- Animal Vocal Communication and Behavior
- Marine animal studies overview
- Insect symbiosis and bacterial influences
- Evolutionary Psychology and Human Behavior
- Amphibian and Reptile Biology
- Animal Ecology and Behavior Studies
- Fish Ecology and Management Studies
- Rangeland and Wildlife Management
- Identification and Quantification in Food
- Insect-Plant Interactions and Control
- Plant and animal studies
- Genetic and phenotypic traits in livestock
- Insect and Arachnid Ecology and Behavior
- Environmental Toxicology and Ecotoxicology
- Physiological and biochemical adaptations
- Environmental DNA in Biodiversity Studies
Flinders University
2017-2023
Australian National University
2016
University of California, Santa Cruz
2007
University of Groningen
2007
University of Rochester
2007
Extra-pair paternity (EPP), where offspring are sired by a male other than the social male, varies enormously both within and among species. Trying to explain this variation has proved difficult because majority of interspecific is phylogenetically based. Ideally, in EPP should be investigated closely related species, but clades with sufficient rare. We present comprehensive multifactorial test individuals 20 populations nine species over 89 years from single bird family (Maluridae). Females...
The insect order of Hymenoptera (ants, bees, sawflies, and wasps) consists almost entirely haplodiploid species. Under haplodiploidy, males develop from unfertilized eggs are haploid, whereas females fertilized diploid. Although diploid commonly occur, haploid have never been reported. In analyzing the phenomenon gynandromorphism in parasitoid wasp Nasonia vitripennis, we found a line that generates complete phenotypic eggs. These ovaries, can lay eggs, as shown by cytological flow...
Despite its importance for the evolution of cooperative breeding, it has proven difficult to determine whether helpers improve their recipients' fitness. Helpers affect fitness in multiple ways, both positive and negative, but effects can also be concealed through reduced maternal investment. Furthermore, determining direction causation is difficult, as helper presence may indicate a productive territory, rather than high productivity indicating an effect help. In cooperatively breeding...
Summary Oxidative damage, caused by reactive oxygen species during aerobic respiration, is thought to be an important mediator of life‐history trade‐offs. To mitigate oxidative antioxidant defence mechanisms are deployed, often at the cost resource allocation other body functions. Both reduced functions and direct damage may decrease individual fitness, through reducing survival and/or reproductive output. The costs reproduction have gained much attention recently, but few studies...
Vocal production learning (the capacity to learn produce vocalizations) is a multidimensional trait that involves different mechanisms during temporal and socioecological contexts. Key outstanding questions are whether vocal begins the embryonic stage mothers play an active role in this through pupil-directed vocalization behaviors. We examined variation copy similarity (an indicator of learning) eight species from songbird family Maluridae, using comparative experimental approaches. found...
Divergence is the first phase of speciation and commonly thought to occur more readily in allopatric populations. Subspecies are populations that divergent but generally retain capacity interbreed should they come into contact. Two subspecies Thick-billed Grasswren (Amytornis modestus) by 1.7% at mitochondrial ND2 gene were previously considered be allopatric. In this study, we discovered parapatric. We use a larger sample size than previous studies examine variation morphology haplotype...
Passerine song has many functions including mate attraction and territory defence. When songs across populations diverge, this can lead to changes in conspecific recognition barriers gene flow, which affect evolutionary processes that could speciation. Two subspecies of thick-billed grasswren (Amytornis modestus) have a parapatric distribution characterised as narrow region high genetic admixture where the two meet. Outside parapatry, are genetically morphologically diverged weak...
Dispersal patterns can dictate genetic population structure and, ultimately, resilience, through maintaining gene flow and diversity. However, geographical landforms, such as peninsulas, impact dispersal thus be a barrier to flow. Here, we use 13 375 genome‐wide single‐nucleotide polymorphisms (SNPs) evaluate infer of the Western Grasswren Amytornis textilis (WGW, n = 140) in Shark Bay region Australia. We found high levels divergence between subpopulations on mainland (Hamelin) narrow...
Habitat heterogeneity can have considerable effects on gene flow and migration across a region of parapatry. Describing habitat parapatry is important for the development eco-evolutionary theory. Two subspecies thick-billed grasswren (Amytornis modestus) share between South Australian salt lakes, Lake Eyre Torrens. While two remain morphologically diverged outside parapatry, it not known what factors within may affect flow. In this study, we test associations differences distributions...
The relationship between nest site characteristics and success is likely to be important in the conservation management of threatened cavity-nesting birds. vulnerable eastern Regent Parrot (Polytelis anthopeplus monarchoides) declining South Australia, but there little information on behavioural ecology its habits. aim this study was quantify parental visitation behaviour measure attributes relation nesting outcome. We collected data from 25 nests along Murray River analysed 608 h video...
Nest cavities are a limited resource, given the extensive land clearance that has occurred in Australia. Some obligate cavity-nesting birds vulnerable to extinction and experience risk from heterospecific species compete for nest cavities. The aim of this study was identify intruder bird at threatened eastern subspecies Regent Parrot (Polytelis anthopeplus monarchoides), measure impact on parental care (parental time budgets) nesting outcome (nest usurpation). We observed 25 nests using...
Abstract Dispersal patterns dictate genetic population structure, and ultimately resilience, through maintaining critical ecological processes diversity. Direct observation of dispersal events is not often possible, but methods offer an alternative method indirectly measuring dispersal. Here, we use 7 652 genome-wide single-nucleotide polymorphisms (SNPs) to evaluate structure infer capabilities the Western Grasswren (Amytornis textilis textilis; WGW) in Australia ( n = 118), utilising a...
Abstract Context In the era of Anthropocene, habitat loss and environmental change threaten persistence many species. Genotyping-By-Sequencing (GBS) is a useful molecular tool for understanding how patterns gene flow are associated with contemporary distributions that may be affected by change. Two parapatric subspecies threatened thick-billed grasswren (TBGW; Amytornis modestus ) more frequently occur in different plant communities. As such, preference community type could reduce...