45 Works

Spatial and temporal variation in prey colour patterns for background-matching across a continuous heterogeneous environment

Marleen Baling, Devi Stuart-Fox, Dianne H. Brunton & James Dale
In heterogeneous habitats, camouflage via background-matching can be challenging because visual characteristics can vary dramatically across small spatial scales. Additionally, temporal variation in signalling functions of colouration can affect crypsis, especially when animals use colouration seasonally for intraspecific signalling (e.g. mate selection). We currently have a poor understanding of how wild prey optimise background-matching within continuously heterogeneous habitats, and whether this is affected by requirements of intraspecific signalling across biological seasons. Here, we quantified colour...

The roles of acclimation and behavior in buffering climate change impacts along elevational gradients

Urtzi Enriquez-Urzelai, Reid Tingley, Michael Kearney, Martina Sacco, Antonio Palacio, Miguel Tejedo & Alfredo Nicieza
1. The vulnerability of species to climate change is jointly influenced by geographic phenotypic variation, acclimation, and behavioral thermoregulation. The importance of interactions between these factors, however, remains poorly understood. 2. We demonstrate how advances in mechanistic niche modelling can be used to integrate and assess the influence of these sources of uncertainty in forecasts of climate change impacts. 3. We explored geographic variation in thermal tolerance (i.e. maximum and minimum thermal limits) and its...

Age of first infection across a range of parasite taxa in a wild mammalian population

Caroline Glidden, Leigh Combrink, Brianna Beechler, Bryan Charleston, Anson Koehler, Danielle Sisson, Gasser Robin, Abdul Jabbar & Anna Jolles
Newborn mammals have an immature immune system that cannot sufficiently protect them against infectious diseases. However, variation in the effectiveness of maternal immunity against different parasites may couple with temporal trends in parasite exposure to influence disparities in timing of infection risk. Determining the relationship between age and infection risk is critical in identifying the portion of a host population that contributes to parasite dynamics, as well as the parasites that regulate host recruitment. While...

Biological characteristics associated with virulence in Clostridioides difficile ribotype 002 in Hong Kong

Ka Yi Kong, Thomas N. Y. Kwong, Hung Chan, Kristine Wong, Samuel S. Y. Wong, Anu P. Chaparala, Raphael C. Y. Chan, Lin Zhang, Joseph J. Y. Sung, Jun Yu, Peter M. Hawkey, Margaret Ip, William K. K. Wu & Sunny H. Wong
Clostridioides difficile infection (CDI) is a common cause of nosocomial diarrhea and can sometimes lead to pseudo-membranous colitis and toxic megacolon. We previously reported that the PCR ribotype 002 was a common C. difficile ribotype in Hong Kong that was associated with increased mortality. In this study, we assessed in vitro bacteriological characteristics and in vivo virulence of ribotype 002 compared to other common ribotypes, including ribotypes 012, 014 and 046. We observed significantly higher...

Rapid beard darkening predicts contest outcome, not copulation success, in bearded dragon lizards

Katrina Rankin
Rapid colour change is widespread in animals and allows them to respond dynamically to the physical and social environment. However, few studies have examined the information conveyed by dynamic colour signals in different social contexts, such as courtship and rivalry contests. Furthermore, dynamic colour change on different body regions may be subject to different selection pressures and therefore serve different functions. We tested whether male colour or colour change predict contest outcome in male-male interactions,...

Anthropogenic and natural barriers affect genetic connectivity in an Alpine butterfly

Daronja Trense, Tom Schmidt, Qiong Yang, Jessica Chung, Ary Hoffmann & Klaus Fischer
Dispersal is a key biological process serving several functions including connectivity among populations. Habitat fragmentation caused by natural or anthropogenic structures may hamper dispersal, thereby disrupting genetic connectivity. Investigating factors affecting dispersal and gene flow is important in the current era of anthropogenic global change, as dispersal comprises a vital part of a species’ resilience to environmental change. Using fine-scale landscape genomics, we investigate gene flow and genetic structure of the Sooty Copper butterfly (Lycaena...

Multi-species models reveal that eDNA metabarcoding is more sensitive than backpack electrofishing for conducting fish surveys in freshwater streams

Emily McColl-Gausden, Andrew Weeks, Rhys Coleman, Katie Robinson, Sue Song, Tarmo Raadik & Reid Tingley
Environmental DNA (eDNA) sampling can provide accurate, cost-effective, landscape-level data on species distributions. Previous studies have compared the sensitivity of eDNA sampling to traditional sampling methods for single species, but similar comparative studies on multi-species eDNA metabarcoding are rare. Using hierarchical species occupancy-detection models, we examined whether key choices associated with eDNA metabarcoding (primer selection, low-abundance read filtering, and the number of positive water samples used to classify a species as present at a site)...

High anal swab viral load predisposes adverse clinical outcomes in severe COVID-19 patients

Haibo Li, Lili Ren, Lulu Zhang, Yeming Wang, Li Guo, Conghui Wang, Yan Xiao, Ying Wang, Jian Rao, Xinming Wang, Ying Liu, Chaolin Huang, Xiaoying Gu, Guohui Fan, Hui Li, Binghuai Lu, Bin Cao & Jianwei Wang
To identify the association between the kinetics of viral load and clinical outcome in severe coronavirus disease 2019 (COVID-19) patients, a retrospective study was performed by involved 188 hospitalized severe COVID-19 patients in the LOTUS China trial. Among the collected 578 paired throat swab (TS) and anal swab (AS) samples, viral RNA was detected in 193 (33.4%) TS and 121 (20.9%) AS. A higher viral RNA load was found in TS than that of AS,...

Evaluation of an enclosed air-lift photobioreactor (ALPBR) for biomass and lipid biosynthesis of microalgal cells grown under fluid-induced shear stress

Ning Ding, Chao Li, Tao Wang, Meijin Guo, Ali Mohsin & Siliang Zhang
An enclosed air-lift photobioreactor (ALPBR) is considered an efficient lab-scale bioreactor for microalgae cell growth and lipid biosynthesis. However, fluid-induced shear stress and mixing are two main factors that affect physiological metabolism in microalgal cell cultures. Herein, a 50-L ALPBR after being designed and manufactured was evaluated for microalgal suspension culture. Moreover, computational fluid dynamics (CFD) simulation was used to characterize the hydrodynamics of ALPBR. Specifically, two model microalgae species Chlorella vulgaris and Chlorella protothecoides...

Misinformation, internet honey trading, and beekeepers drive a plant invasion

Magdalena Lenda, Piotr Skórka, Karolina Kuszewska, Dawid Moroń, Michał Bełcik, Renata Baczek Kwinta, Franciszek Janowiak, David H. Duncan, Peter A. Vesk, Hugh P. Possingham & Johannes M. H. Knops
Biological invasions are a major human induced global change that is threatening global biodiversity by homogenizing the world’s fauna and flora. Species spread because humans have moved species across geographic boundaries and have changed ecological factors that structure ecosystems, such as nitrogen deposition, disturbance, etc. Many biological invasions are caused accidentally, as a byproduct of human travel and commerce driven product shipping. However, humans also have spread many species intentionally because of perceived benefits. Of...

Testing whether ensemble modelling is advantageous for maximising predictive performance of species distribution models

Tianxiao Hao, Jane Elith, José J. Lahoz‐Monfort & Gurutzeta Guillera‐Arroita
Predictive performance is important to many applications of species distribution models (SDMs). The SDM ‘ensemble’ approach, which combines predictions across different modelling methods, is believed to improve predictive performance, and is used in many recent SDM studies. Here, we aim to compare the predictive performance of ensemble species distribution models to that of individual models, using a large presence-absence dataset of eucalypt tree species. To test model performance, we divided our dataset into calibration and...

Data from: Divergent male and female mate preferences do not explain incipient speciation between lizard lineages

Claire McLean, Richard Bartle, Caroline Dong, Katrina Rankin & Devi Stuart-Fox
Diversification in sexual signals is often taken as evidence for the importance of sexual selection in speciation. However, in order for sexual selection to generate reproductive isolation between populations, both signals and mate preferences must diverge together. Furthermore, assortative mating may result from multiple behavioural mechanisms, including female mate preferences, male mate preferences and male-male competition; yet their relative contributions are rarely evaluated. Here, we explored the role of mate preferences and male competitive ability...

Global biogeography and diversification of a group of brown seaweeds (Phaeophyceae) driven by clade-specific evolutionary processes

Christophe Vieira, Frederique Steen, Sofie D'hondt, Quinten Bafort, Cindy Fernandez-García, Brian Wysor, Lennert Tyberghein, Ana Tronholm, Lydiane Mattio, Claude Payri, Gary Saunders, Frederik Leliaert, Heroen Verbruggen & Olivier De Clerck
Aim: Historical processes that shaped current diversity patterns of seaweeds remain poorly understood. Using Dictyotales, a globally distributed order of brown seaweeds as a model, we test if historical biogeographical and diversification patterns are comparable across clades. Dictyotales contain some 22 genera, three of which, Dictyota, Lobophora and Padina, are exceptionally diverse. Specifically we test if the evolutionary processes in these clades that shaped their latitudinal diversity patterns are in line with the tropical conservatism,...

Migration trajectories of the diamondback moth Plutella xylostella in China inferred from population genomic variation

Ming‐Zhu Chen, Li‐Jun Cao, Bing‐Yan Li, Jin‐Cui Chen, Ya‐Jun Gong, Ary Anthony Hoffmann & Shu‐Jun Wei
BACKGROUND: The diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae), is a notorious pest of cruciferous plants. In temperate areas, annual populations of DBM originate from adult migrants. However, the source populations and migration trajectories of immigrants remain unclear. Here, we investigated migration trajectories of DBM in China with genome-wide single nucleotide polymorphisms (SNPs) genotyped using double-digest RAD (ddRAD) sequencing. We first analyzed patterns of spatial and temporal genetic structure among southern source and northern recipient...

Traits data of exotic species in four tropical botanic gardens and adjacent natural forests

Decky Junaedi, Gurutzeta Guillera-Arroita, Peter Vesk, Michael McCarthy, Mark Burgman & Jane Catford
The establishment of new botanic gardens in tropical regions highlights a need for weed risk assessment tools suitable for tropical ecosystems. The relevance of plant traits for invasion into tropical rainforests has not been well studied. Working in and around four botanic gardens in Indonesia where 600 exotic species have been planted, we estimated the effect of four plant traits and time since species were introduced on: a) naturalization probability of exotic species; b) the...

Help-seeking preferences among Chinese college students exposed to a natural disaster: a person-centered approach

Wei Shi & Brian J. Hall
Direct exposure to natural disasters is associated with increased mental disorders. Help-seeking behaviour among Chinese adults is low and the barriers and facilitators of help-seeking among Chinese adults exposed to natural disasters is understudied. Using a person-centred approach, this study describes help-seeking preferences and their correlates in a sample of Chinese college students after experiencing Typhoon Hato, the strongest storm to affect Macao, China in the past 50 years. The baseline sample was collected one...

Traits data of naturalized and non-naturalized alien species of four Indonesian Botanic Gardens

Decky Junaedi, Jane Catford, Mark Burgman, Michael McCarthy, Gurutzeta Guillera-Arroita & Peter Vesk
The establishment of new botanic gardens in tropical regions highlights a need for weed risk assessment tools suitable for tropical ecosystems. The relevance of plant traits for invasion into tropical rainforests has not been well studied. Working in and around four botanic gardens in Indonesia where 590 alien species have been planted, we estimated the effect of four plant traits, plus time since species introduction, on: a) the naturalization probability and b) abundance (density) of...

Biological characteristics associated with virulence in Clostridioides difficile ribotype 002 in Hong Kong

Ka Yi Kong, Thomas N. Y. Kwong, Hung Chan, Kristine Wong, Samuel S. Y. Wong, Anu P. Chaparala, Raphael C. Y. Chan, Lin Zhang, Joseph J. Y. Sung, Jun Yu, Peter M. Hawkey, Margaret Ip, William K. K. Wu & Sunny H. Wong
Clostridioides difficile infection (CDI) is a common cause of nosocomial diarrhea and can sometimes lead to pseudo-membranous colitis and toxic megacolon. We previously reported that the PCR ribotype 002 was a common C. difficile ribotype in Hong Kong that was associated with increased mortality. In this study, we assessed in vitro bacteriological characteristics and in vivo virulence of ribotype 002 compared to other common ribotypes, including ribotypes 012, 014 and 046. We observed significantly higher...

Data from: Sibling rivalry vs mother’s curse: can kin competition facilitate a response to selection on male mitochondria?

Thomas Keaney, Heidi Wong, Damian Dowling, Theresa Jones & Luke Holman
Assuming that fathers never transmit mitochondrial DNA (mtDNA) to their offspring, mitochondrial mutations that affect male fitness are invisible to direct selection on males, leading to an accumulation of male-harming alleles in the mitochondrial genome (mother’s curse). However, male phenotypes encoded by mtDNA can still undergo adaptation via kin selection provided that males interact with females carrying related mtDNA, such as their sisters. Here, using experiments with Drosophila melanogaster carrying standardised nuclear DNA but distinct...

Climate more important than soils for predicting forest biomass at the continental scale

Alison Bennett, Trent Penman, Stefan Arndt, Stephen Roxburgh & Lauren Bennett
Above-ground biomass in forests is critical to the global carbon cycle as it stores and sequesters carbon from the atmosphere. Climate change will disrupt the carbon cycle hence understanding how climate and other abiotic variables determine forest biomass at broad spatial scales is important for validating and constraining Earth System models and predicting the impacts of climate change on forest carbon stores. We examined the importance of climate and soil variables to explaining above-ground biomass...

Data for: Convergent evolution of tail spines in squamate reptiles driven by microhabitat use

Till Ramm, Emily J. Roycroft & Johannes Müller
The repeated evolution of convergent or analogous traits is often used as evidence for adaptive evolution. Squamate reptiles show a high degree of convergence in a variety of morphological traits; however, the evolutionary mechanisms driving these patterns are not fully understood. Here we investigate the evolution of tail spines, a trait that evolved multiple times in evolutionarily independent clades of lizards. Taking a comparative phylogenetic approach, we use 2877 squamate species to demonstrate that the...

Data from: Divergent lineages in a semi-arid mallee species, Eucalyptus behriana, correspond to a major geographic break in south-eastern Australia

Patrick Fahey, Rachael Fowler, Todd McLay, Frank Udovicic, David Cantrill & Michael Bayly
Aim: To infer relationships between populations of the semi-arid, mallee eucalypt, Eucalyptus behriana, to build hypotheses regarding evolution of major disjunctions in the species’ distribution and to expand understanding of the biogeographical history of south-eastern Australia. Location: South-eastern Australia Taxon: Eucalyptus behriana (Myrtaceae, Angiospermae) Methods: We developed a large dataset of anonymous genomic loci for 97 samples from 11 populations of E. behriana using double digest restriction site associated DNA sequencing (ddRAD-seq), to determine genetic...

The Dimensions of Consciousness: From perceptual illusions to psychedelics. An interview of Olivia Carter by Katrin H. Preller.

Olivia Carter & Katrin, H. Preller
In this interview, the psychologist and neuroscientist Olivia Carter (University of Melbourne, Australia) explains how she became interested in the field of consciousness. We discuss how her work on visual perception has led her to study the effect of psychedelics and how this has inspired a multidimensional model of consciousness. We discuss the potential contents of “higher” states of consciousness and argue that the existence of those is an unresolved question. We finish the exchange...

Discovery Song Database Tool

Sally Treloyn, JARED KUVENT, REUBEN BROWN & NICHOLAS THIEBERGER
A linking interface and database tool to ingest, record and link metadata associated with archival records of Indigenous song.

Evaluation of an enclosed air-lift photobioreactor (ALPBR) for biomass and lipid biosynthesis of microalgal cells grown under fluid-induced shear stress

Ning Ding, Chao Li, Tao Wang, Meijin Guo, Ali Mohsin & Siliang Zhang
An enclosed air-lift photobioreactor (ALPBR) is considered an efficient lab-scale bioreactor for microalgae cell growth and lipid biosynthesis. However, fluid-induced shear stress and mixing are two main factors that affect physiological metabolism in microalgal cell cultures. Herein, a 50-L ALPBR after being designed and manufactured was evaluated for microalgal suspension culture. Moreover, computational fluid dynamics (CFD) simulation was used to characterize the hydrodynamics of ALPBR. Specifically, two model microalgae species Chlorella vulgaris and Chlorella protothecoides...

Registration Year

  • 2020
    45

Resource Types

  • Dataset
    33
  • Text
    7
  • Image
    3
  • Software
    2

Affiliations

  • University of Melbourne
    45
  • Shanghai Jiao Tong University
    7
  • Huazhong University of Science and Technology
    6
  • Tongji University
    6
  • Chinese Academy of Medical Sciences & Peking Union Medical College
    5
  • Tianjin University of Traditional Chinese Medicine
    5
  • University of Chinese Academy of Sciences
    5
  • Third Hospital of Hebei Medical University
    4
  • Zhejiang University
    4
  • Central South University
    4