Comparative phylogeography can inform many macroevolutionary questions, such as whether species diversification is limited by rates of geographic population differentiation. We examined the link between population genetic structure and species diversification in the fully aquatic sea snakes (Hydrophiinae) by comparing mitochondrial phylogeography in 16 species from two closely related clades that show contrasting diversification dynamics across northern Australia. Contrary to expectations from theory and several empirical studies, our results show that, at the geographic scale...
Data from: Seascape genomics reveals fine-scale patterns of dispersal for a reef fish along the ecologically divergent coast of Northwestern AustraliaJoseph D. DiBattista, Michael J. Travers, Glenn I. Moore, Richard D. Evans, Stephen J. Newman, Ming Feng, Samuel D. Moyle, Rebecca J. Gorton, Thor Saunders & Oliver Berry
Understanding the drivers of dispersal among populations is a central topic in marine ecology and fundamental for spatially explicit management of marine resources. The extensive coast of Northwestern Australia provides an emerging frontier for implementing new genomic tools to comparatively identify patterns of dispersal across diverse and extreme environmental conditions. Here, we focused on the stripey snapper (Lutjanus carponotatus), which is important to recreational, charter-based and customary fishers throughout the Indo-West Pacific. We collected 1,016...
eDNA metabarcoding survey reveals fine-scale coral reef community variation across a remote, tropical island ecosystemKatrina West, Michael Stat, Euan Harvey, Craig Skepper, Joseph DiBattista, Zoe Richards, Michael Travers, Stephen Newman & Michael Bunce
Environmental DNA (eDNA) metabarcoding, a technique for retrieving multi-species DNA from environmental samples, can detect a diverse array of marine species from filtered seawater samples. There is a growing potential to integrate eDNA alongside existing monitoring methods in order to establish or improve the assessment of species diversity. Remote island reefs are increasingly vulnerable to climate-related threats and as such there is a pressing need for efficient whole-ecosystem surveying approaches to baseline biodiversity, study assemblage...
Interactions between predators and humans are a key driver of human-wildlife conflicts and can underpin the management of predator populations. Management of the impacts of dingoes (Canis familiaris) on livestock and native species is a prime example of a persistent and contentious predator management issue with potential impacts on the integrity of dingo populations. To manage the potential impacts of dingoes and their control, it is imperative to understand the effects of control approaches on...
Data from: Combined use of eDNA metabarcoding and video surveillance for the assessment of fish biodiversityMichael Stat, Jeffrey John, Joseph D. DiBattista, Stephen J. Newman, Michael Bunce & Euan S. Harvey
Monitoring communities of fish is important for the management and health of fisheries and marine ecosystems. Baited remote underwater video systems (BRUVs) are one of the most effective non‐destructive techniques for sampling bony fishes and elasmobranchs (sharks, rays, and skates). However, while BRUVs can sample visually conspicuous biota, some taxa are under‐sampled or not recorded at all. Here, we compared the diversity of fishes characterised using BRUVs with metabarcoding of environmental DNA (eDNA) extracted from...
Large‐scale eDNA metabarcoding survey reveals marine biogeographic break and transitions over tropical north‐western AustraliaKatrina West, Michael Travers, Michael Stat, Euan Harvey, Zoe Richards, Joseph DiBattista, Stephen Newman, Alastair Harry, Craig Skepper, Matthew Heydenrych, Michael Bunce, Michael J. Travers, Euan S. Harvey, Zoe T. Richards, Joseph D. DiBattista, Stephen J. Newman & Craig L. Skepper
Aim: Environmental DNA (eDNA) metabarcoding has demonstrated its applicability as a highly sensitive biomonitoring tool across small spatial and temporal scales in marine ecosystems. However, it has rarely been tested across large spatial scales, or biogeographical barriers. Here, we scale up marine eDNA metabarcoding, test its ability to detect a major marine biogeographic break, and evaluate its use as a regional biomonitoring tool in Australia. Location: North-western Australia (NWA) Methods: We applied metabarcoding assays targeting...
Rising temperatures and extreme climatic events are propelling tropical species into temperate marine ecosystems, but not all species can persist. Here, we used the heatwave-driven expatriation of tropical black rabbitfish (Siganus fuscescens) to the temperate environments of Western Australia to assess the ecological and evolutionary mechanisms that may entail their persistence. Population genomic assays for this rabbitfish indicated little genetic differentiation between tropical residents and vagrants to temperate environments due to high migration rates, which...
Data from: A seascape genetic analysis of a stress-tolerant coral species along the Western Australian coastRichard D. Evans, Nicole M. Ryan, Michael J. Travers, Ming Feng, Yvette Hitchen & W. Jason Kennington
Genetic diversity and connectivity are key factors in determining a population’s resilience to future disturbance. This is especially relevant to corals, which are in global decline due to increasing frequency and strength of thermal anomalies and severe tropical cyclones. While many studies have investigated genetic diversity and population structure in corals, they focused on species being removed at the greatest rate from coral reefs, Acroporids and Pocilloporids, and it is unclear whether the patterns observed...
Department of Primary Industries and Regional Development8
University of Newcastle Australia2
Commonwealth Scientific and Industrial Research Organisation2
University of Western Australia2
University of Adelaide1
Hawaii Pacific University1
Western Australian Museum1