A5005481794- Genetic diversity and population structure
- Fish Ecology and Management Studies
- Marine animal studies overview
- Identification and Quantification in Food
- Fish Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Fish biology, ecology, and behavior
- Genetic and phenotypic traits in livestock
- Species Distribution and Climate Change
- Animal Vocal Communication and Behavior
- Turtle Biology and Conservation
- Ichthyology and Marine Biology
- Genomics and Phylogenetic Studies
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Marine and coastal plant biology
- Environmental DNA in Biodiversity Studies
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Aquaculture disease management and microbiota
- Physiological and biochemical adaptations
- Marine Ecology and Invasive Species
- Marine Bivalve and Aquaculture Studies
- Avian ecology and behavior
- Evolution and Paleontology Studies
Flinders University
2016-2025
The University of Sydney
2024
Macquarie University
2006-2020
Hudson Institute
2019
John Wiley & Sons (United States)
2019
Yahoo (United Kingdom)
2012
University of Lisbon
2011
New South Wales Department of Primary Industries
2011
University of Tasmania
2011
James Cook University
2011
Genetic diversity underpins the ability of populations to persist and adapt environmental changes. Substantial empirical data show that genetic rapidly deteriorates in small isolated due drift, leading reduction adaptive potential fitness increase inbreeding. Assisted gene flow (e.g. via translocations) can reverse these trends, but lack on loss fear impairing population "uniqueness" often prevents managers from acting. Here, we use riverscape analyses simulations explore consequences...
Abstract Under climate change, species unable to track their niche via range shifts are largely reliant on genetic variation adapt and persist. Genomic vulnerability predictions used identify populations that lack the necessary variation, particularly at climate-relevant genes. However, hybridization as a source of novel adaptive is typically ignored in genomic studies. We estimated environmental models for closely related rainbowfish ( Melanotaenia spp.) across an elevational gradient...
All genetic markers are estimators of DNA nucleotide sequence variation. Rather than obtaining data, it is cheaper and faster to use techniques that estimate variation, although this usually results in the loss some information. SSCP (single-stranded conformation polymorphism) offers a sensitive but inexpensive, rapid, convenient method for determining which samples set differ sequence, so only an informative subset need be sequenced. In short, most variation can detected with relatively...
Understanding the scale of marine population connectivity is critical for conservation and sustainable management resources. For many species adults are benthic relatively immobile, so patterns larval dispersal recruitment provide key to understanding connectivity. Contrary previous expectations, recent studies have often detected unexpectedly low fine-scale structure in sea, leading a paradigm shift how systems viewed. Nonetheless, link between underlying physical biological processes has...
Abstract Background Identifying genes of adaptive significance in a changing environment is major focus ecological genomics. Such efforts were restricted, until recently, to researchers studying small group model organisms or closely related taxa. With the advent next generation sequencing (NGS), genomes and transcriptomes virtually any species are now available for studies evolution. We experimentally manipulated temperature conditions two groups crimson spotted rainbowfish ( Melanotaenia...
Research in reintroduction biology has provided a greater understanding of the often limited success species reintroductions and highlighted need for scientifically rigorous approaches programs. We examined recent genetic-based captive-breeding literature to showcase underuse genetic data gathered. devised framework that takes full advantage through assessment makeup populations before (past component framework), during (present component), after (future component) events understand their...
Identifying which factors shape the distribution of intraspecific genetic diversity is central in evolutionary and conservation biology. In marine realm, absence obvious barriers to dispersal can make this task more difficult. Nevertheless, recent studies have provided valuable insights into may be shaping structure world's oceans. These were, however, generally conducted on organisms with larval dispersal. Here, using a seascape genetics approach, we show that productivity sea surface...
Populations of broadcast spawning marine organisms often have large sizes and are exposed to reduced genetic drift. Under such scenarios, strong selection associated with spatial environmental heterogeneity is expected drive localized adaptive divergence, even in the face connectivity. We tested this hypothesis using a seascape genomics approach commercially important greenlip abalone (Haliotis laevigata). assessed how its population structure has been influenced by along zonal coastal...
Tests for isolation by distance (IBD) are the most commonly used method of assessing spatial genetic structure. Many studies have exclusively mitochondrial DNA (mtDNA) sequences to test IBD, but this marker is often in conflict with multilocus markers. Here, we report a review literature on aims determining (a) whether significant IBD primarily result lumping spatially discrete populations, and (b) microsatellite datasets more likely detect when mtDNA does not. We also provide empirical data...
Abstract Understanding how natural selection generates and maintains adaptive genetic diversity in heterogeneous environments is key to predicting the evolutionary response of populations rapid environmental change. Detecting complex spatial remains challenging, especially for threatened species where effects strong drift may overwhelm signatures selection. We carried out a basinwide riverscape genomic analysis southern pygmy perch ( Nannoperca australis ), an ecological specialist with low...
Giant tortoises are among the longest-lived vertebrate animals and, as such, provide an excellent model to study traits like longevity and age-related diseases. However, genomic molecular evolutionary information on giant is scarce. Here, we describe a global analysis of genomes Lonesome George-the iconic last member Chelonoidis abingdonii-and Aldabra tortoise (Aldabrachelys gigantea). Comparison these with those related species, using both unsupervised supervised analyses, led us detect...
Significance Adaptation to climate change is expected be influenced by thermal conditions experienced species during their evolutionary history. We studied plastic capacity as a target of climatic selection, hypothesizing that populations evolved under warmer climates have greater adaptive resilience change. This was tested experimentally comparing upper tolerance and gene expression in fish from desert, temperate, subtropical regions Australia. Divergent responses future were found across...
Intraspecific genetic structure in widely distributed marine species often mirrors the boundaries between temperature-defined bioregions. This suggests that same thermal gradients maintain distinct assemblages also drive evolution of new biodiversity. Ecological speciation scenarios are invoked to explain such patterns, but fact adaptation is usually only identified when phylogenetic splits already evident makes it impossible rule out alternative scenario allopatric with subsequent...
Anthropogenic habitat fragmentation is often implicated as driving the current global extinction crisis, particularly in freshwater ecosystems. The genetic signal of recent population isolation can be confounded by complex spatial arrangement dendritic river systems. Consequently, many populations may presently managed separately based on an incorrect assumption that they have evolved isolation. Integrating landscape genomics data with models connectivity account for structure, we show...
Abstract The idengification of incipient ecological species represents an opportunity to investigate current evolutionary process where adaptive divergence and reproductive isolation are associated. In this study we analysed the genetic structure marine estuarine populations silverside fish Odontesthes argentinensis using nine microsatellite loci 396 bp mitochondrial DNA (mtDNA) control region. Our main objective was relationship among colonization, divergent selection speciation in...
Bottlenose dolphins are one of only a few mammalian taxa where the males known to cooperate within their social group in order maintain mating access single females against other males. Male bonds bottlenose have been hypothesized as evolving through kinship and associated inclusive fitness effects. In this study we tested whether individually identified male preferentially associate form alliances with kin small coastal resident population southeastern Australia using combination...
Abstract In most mammals males usually disperse before breeding, while females remain in their natal group or area. However, odontocete cetaceans behavioural and/or genetic evidence from populations of four species indicate that both and site. For coastal resident bottlenose dolphins field data suggest sexes are philopatric to Assignment tests analyses relatedness based on microsatellite markers were used investigate this hypothesis dolphins, Tursiops aduncus , two small southeastern...
Habitat fragmentation is one of the leading causes population declines, threatening ecosystems worldwide.Freshwater taxa may be particularly sensitive to habitat loss as connectivity between suitable patches restricted not only by natural stream network but also anthropogenic factors.Using a landscape genetics approach, we assessed impact availability on genetic diversity and an endangered Australian freshwater fish Macquarie perch, Macquaria australasica (Percichthyidae).The relative...
The lower reaches of the expansive Murray–Darling Basin, Australia, are a hotspot for freshwater biodiversity. regional ecosystem, however, has been significantly altered by river regulation, including local and catchment-wide water abstraction. Freshwater fishes have suffered from resultant flow regime, together with other threats habitat degradation alien species. Impacts reached critical point (imminent species extinction) during prolonged drought (1997–2010) that lead to broad-scale loss...