41 Works

Human-associated microbiota suppress invading bacteria even under disruption by antibiotics

Andrew Letten, Michael Baumgartner, Katia Pfrunder-Cardozo, Jonathan Levine & Alex Hall
In light of their adverse impacts on resident microbial communities, it is widely predicted that broad-spectrum antibiotics can promote the spread of resistance by releasing resistant strains from competition with other strains and species. We investigated the competitive suppression of a resistant strain of Escherichia coli inoculated into human-associated communities in the presence and absence of the broad and narrow spectrum antibiotics rifampicin and polymyxin B, respectively. We found strong evidence of community-level suppression of...

Delimiting cryptic species within the brown-banded bamboo shark, Chiloscyllium punctatum in the Indo-Australian region with mitochondrial DNA and genome-wide SNP approaches

Fahmi Fahmi, Christine Dudgeon, Ian Tibbetts, Mike Bennett & Chris Dudgeon
Background Delimiting cryptic species in elasmobranchs is a major challenge in modern taxonomy due the lack of available phenotypic features. Employing stand-alone genetics in splitting a cryptic species may prove problematic for further studies and for implementing conservation management. In this study, we examined mitochondrial DNA and genome-wide nuclear single nucleotide polymorphisms (SNPs) in the brown-banded bambooshark, Chiloscyllium punctatum to evaluate potential cryptic species and the species-population boundary in the group. Results Both mtDNA and...

Data from: Opsins in Onychophora (velvet worms) suggest a single origin and subsequent diversification of visual pigments in arthropods

Lars Hering, Miriam J. Henze, Martin Kohler, Almut Kelber, Christoph Bleidorn, Maren Leschke, Birgit Nickel, Matthias Meyer, Martin Kircher, Paul Sunnucks & Georg Mayer
Multiple visual pigments, prerequisites for color vision, are found in arthropods, but the evolutionary origin of their diversity remains obscure. In this study, we explore the opsin genes in five distantly related species of Onychophora, using deep transcriptome sequencing and screening approaches. Surprisingly, our data reveal the presence of only one opsin gene (onychopsin) in each onychophoran species, and our behavioral experiments indicate a maximum sensitivity of onychopsin to blue–green light. In our phylogenetic analyses,...

Barriers in a sea of elasmobranchs

Maximilian Hirschfeld, Christine Dudgeon, Marcus Sheaves & Adam Barnett
Background The interplay of animal dispersal and environmental heterogeneity is fundamental for the distribution of biodiversity on earth. In the ocean, the interaction of physical barriers and dispersal has primarily been examined for organisms with planktonic larvae. Animals that lack a planktonic life stage and depend on active dispersal are however likely to produce distinctive patterns. Methods We used available literature on population genetics and phylogeography of elasmobranchs (sharks, rays and skates), to examine how...

The visual ecology of Holocentridae, a nocturnal coral reef fish family with a deep-sea-like multibank retina

Fanny De Busserolles, Fabio Cortesi, Lily Fogg, Martin Luehrmann, Sara Stieb & Justin Marshall
The visual systems of teleost fishes usually match their habitats and lifestyles. Since coral reefs are bright and colourful environments, the visual systems of their diurnal inhabitants have been more extensively studied than those of nocturnal species. In order to fill this knowledge gap, we conducted a detailed investigation of the visual system of the nocturnal reef fish family Holocentridae. Results showed that the visual system of holocentrids is well adapted to their nocturnal lifestyle...

A dominant-negative SOX18 mutant disrupts multiple regulatory layers essential to transcription factor activity

Jieqiong Lou, Alex McCann, Mehdi Moustaqil, Matthew Graus, Ailisa Blum, Frank Fontaine, Hui Liu, Winnie Luu, Peter Koopman, Emma Sierecki, Yann Gambin, Frédéric Meunier, Zhe Liu, Elizabeth Hinde & Mathias Francois
Few genetically dominant mutations involved in human disease have been fully explained at the molecular level. In cases where the mutant gene encodes a transcription factor, the dominant-negative mode of action of the mutant protein is particularly poorly understood. Here, we studied the genome-wide mechanism underlying a dominant-negative form of the SOX18 transcription factor (SOX18RaOp) responsible for both the classical mouse mutant Ragged Opossum and the human genetic disorder Hypotrichosis-Lymphedema-Telangiectasia-Renal Syndrome. Combining three single-molecule imaging...

Far Eastern Curlew and Whimbrel prefer flying low: wind support and good visibility appear only secondary factors in determining migratory flight altitude

Batbayar Galtbalt, Amanda Lilleyman, Jonathan T Coleman, Chuyu Cheng, Zhijun Ma, Danny I Rogers, Bradley K Woodworth, Richard A Fuller, Stephen T Garnett & Marcel Klaassen
Background: In-flight conditions are hypothesized to influence the timing and success of long-distance migration. Wind assistance and thermal uplift are thought to reduce the energetic costs of flight, humidity, air pressure and temperature may affect the migrants’ water balance, and clouds may impede navigation. Recent advances in animal-borne long-distance tracking enable evaluating the importance of these factors in determining animals’ flight altitude. Methods: Here we determine the effects of wind, humidity, temperature, cloud cover, and...

Distribution and habitat attributes associated with the Himalayan red panda in the westernmost distribution range

Saroj Shrestha, Arjun Thapa, Damber Bista, Natasha Robinson, Ang Sherpa, Krishna Acharya, Shant Jnawali, Sonam Lama & Sony Lama
The Himalayan red panda (Ailurus fulgens), a recently confirmed distinct species in the red panda genus, is distributed in Nepal, India, Bhutan and south Tibet. Nepal represents the western most distribution of the Himalayan red panda. This study aim to determine important habitat features influencing the distribution of red panda and recommend possible habitat corridors. This manuscript described current potential habitat of 3,222 km2 with the relative abundance of 3.34 signs/km in Nepal. Aspect, canopy...

Middle Ordovician (middle Darriwilian) Archaeospicularia and Entactinaria (radiolarians) from the Table Cove Formation, Piccadilly Quarry, western Newfoundland, Canada

Jonathan Aitchison & Sarah Kachovich
New, distinctive, well preserved and previously undescribed constituents of a Middle Ordovician (middle Darriwilian, Dw2) radiolarian assemblage from the Table Cove Formation in Newfoundland are described. Three-dimensional X-ray micro-computed tomography (μ-CT) facilitates detailed examination of key specimens revealing hitherto unknown details of the internal morphologies of key lower Paleozoic taxonomic groups amongst which a lack of knowledge has previously impeded resolution of higher taxonomic rankings. Twenty-seven archaeospiculid and entactinarian taxa are described and illustrated including...

Hull fouling marine invasive species pose a very low, but plausible, risk of introduction to East Antarctica in climate change scenarios

Oakes Holland, Justine Shaw, Jonathan Stark & Kerrie Wilson
Aims: To identify potential hull fouling marine invasive species that could survive in East Antarctica presently and in the future. Location: Australia's Antarctic continental stations: Davis, Mawson and Casey, East Antarctica; and subantarctic islands: Macquarie Island and Heard and McDonald Islands. Methods: Our study uses a novel machine-learning algorithm to predict which currently known hull fouling MIS could survive in shallow benthic ecosystems adjacent to Australian Antarctic research stations and subantarctic islands, where ship traffic...

Protecting the global ocean for biodiversity, food and climate

Enric Sala, Juan Mayorga, Darcy Bradley, Reniel Cabral, Trisha Atwood, Arnaud Auber, William Cheung, Francesco Ferretti, Alan Friedlander, Steven Gaines, Cristina Garilao, Whitney Goodell, Benjamin Halpern, Audra Hinson, Kristin Kaschner, Kathleen Kesner-Reyes, Fabien Leprieur, Jennifer McGowan, Lance Morgan, David Mouillot, Juliano Palacios-Abrantes, Hugh Possingham, Kristin Rechberger, Boris Worm & Jane Lubchenco
The ocean contains unique biodiversity, provides valuable food resources, and is a major sink for anthropogenic carbon. Marine protected areas (MPAs) are an effective tool for restoring ocean biodiversity and ecosystem services but at present only 2.7% of the ocean is highly protected. This low level of ocean protection is due largely to conflicts with fisheries and other extractive uses. To address this issue, here we developed a conservation planning framework to prioritize highly protected...

Janzen-Connell effects partially supported in reef-building corals: adult presence interacts with settler density to limit establishment

Carrie Sims, Eugenia Sampayo, Margaret Mayfield, Timothy Staples, Nataly Gutierrez-Isaza, Steven Dalton & John Pandolfi
The Janzen-Connell hypothesis predicts increased survival of early life stages with decreasing conspecific density and increased distance from conspecific adults. Evidence of Janzen-Connell effects in maintaining diversity is common in plant communities, but its importance in sessile marine invertebrates communities remains unclear. Under controlled aquarium conditions, we examined the effect of density-dependence and adult conspecific water treatments (absent/present) on propagule settlement success and settler post-settlement survival, along with associated spatial patterns, for six broadcast-spawning, reef-building...

Data from: Telemetry tails: A practical method for attaching animal-borne devices to small vertebrates in the field

Kate A. Cornelsen, Cassandra M. Arkinstall, Jason Van Weenen, Alexandra K. Ross, Jasmin C. Lawes, Katherine E. Moseby, Andrew Elphinstone & Neil R. Jordan
Context. Continued miniaturisation of tracking technology increases its utility in animal applications. However, species morphology often dictates the type of animal-borne device (ABD) that can be used, and how it is attached. The morphology of species within Peramelemorphia preclude them from the standard collar attachment of ABDs for terrestrial mammals. Aims. This paper describes a method for the tail-mount attachment of ABDs, and deployment results for Peramelemorphia across arid, semi-arid, and temperate Australia to (a)...

Environmental DNA reveals a multi-taxa biogeographic break across the Arabian Sea and Sea of Oman

Joseph DiBattista, Michael Berumen, Mark Priest, Maarten De Brauwer, Darren Coker, Tane Sinclair-Taylor, Amanda Hay, Gerd Bruss, Shawky Mansour, Michael Bunce, Christopher Goatley, Matthew Power & Alyssa Marshell
Environmental DNA (eDNA) is increasingly being used to assess community composition in marine ecosystems. Applying eDNA approaches across broad spatial scales now provide the potential to inform biogeographic analyses. However, to date, few studies have employed this technique to assess broad biogeographic patterns across multiple taxonomic groups. Here, we compare eDNA-derived communities of bony fishes and invertebrates, including corals and sponges, from 15 locations spanning the entire length of the Omani coast. This survey includes...

Historical (1901-1920), contemporary (1979-2013), and future (2061-2080) terrestrial life zones

Paul R. Elsen, Earl C. Saxon, B. Alexander Simmons, Michelle Ward, Brooke A. Williams, Hedley S. Grantham, Salit Kark, Noam Levin, Katharina-Victoria Perez-Hammerle, April E. Reside & James E. M. Watson
Datasets depicting historical (1901-1920), contemporary (1979-2013), and future (2061-2080) life zones as global rasters at 30 arc-second resolution in GeoTiff format are included, which were produced for the study "Accelerated shifts in terrestrial life zones under rapid climate change", published in Global Change Biology by Elsen et al. Life zones are determined by distinct combinations of biotemperature and precipitation and represent broad-scale ecosystem types (sensu Holdridge[1]). For the future period, life zone maps were produced...

Data for: Spatial and temporal genetic variation in an exploited reef fish: The effects of exploitation on cohort genetic structure

Zahra Taboun, Ryan Walter, Jennifer Ovenden & Daniel Heath
Many coral reef fishes are fished, often resulting in detrimental genetic effects; however, reef fishes often show unpredictable patterns of genetic variation, which potentially mask the effects of fishing. Our goals were to characterize spatial and temporal genetic variation and determine the effects of fishing on an exploited reef fish, Plectropomus leopardus, Lacepède (the common coral trout). To determine population structure, we genotyped 417 Great Barrier Reef coral trout from four populations sampled in two...

Registration Year

  • 2021
    41

Resource Types

  • Dataset
    41

Affiliations

  • University of Queensland
    41
  • UNSW Sydney
    4
  • University of Melbourne
    3
  • Griffith University
    3
  • University of California, Santa Barbara
    3
  • Smithsonian Tropical Research Institute
    3
  • University of Sydney
    3
  • Janelia Farm Research Campus
    2
  • University of the Sunshine Coast
    2
  • University of California, Berkeley
    2