33 Works

Too hot for the devil? Did climate change cause the mid-Holocene extinction of the Tasmanian devil (Sacrophilus harrisii) from mainland Australia?

Shane Morris, Michael Kearney, Christopher Johnson & Barry Brook
The possible role of climate change in late Quaternary animal extinctions is hotly debated, yet few studies have investigated its direct effects on animal physiology to assess whether past climate changes might have had significant impacts on now-extinct species. Here we test whether climate change could have imposed physiological stress on the Tasmanian devil (Sarcophilus harrisii) during the mid-Holocene, when the species went extinct on mainland Australia. Physiological values for the devil were quantified using...

Data from: Heating rates are more strongly influenced by near-infrared than visible reflectance in beetles

Lu-Yi Wang, Amanda M Franklin, Jay R Black & Devi Stuart-Fox
Adaptations to control heat transfer through the integument are a key component of temperature regulation in animals. However, there remain significant gaps in our understanding of how different optical and morphological properties of the integument affect heating rates. To address these gaps, we examined the effect of reflectivity in both ultraviolet-visible and near-infrared wavelengths, surface micro-sculpturing, effective area (area subjected to illumination) and cuticle thickness on radiative heat gain in jewel beetles (Buprestidae). We measured...

Ecological interactions shape the evolution of flower colour in communities across a temperate biodiversity hotspot

Alexander Skeels, Russell Dinnage, Iliana Medina & Marcel Cardillo
Processes driving the divergence of floral traits may be integral to the extraordinary richness of flowering plants and the assembly of diverse plant communities. Several models of pollinator-mediated floral evolution have been proposed; floral divergence may (i) be directly involved in driving speciation or may occur after speciation driven by (ii) drift or local adaptation in allopatry or (iii) negative interactions between species in sympatry. Here, we generate predictions for patterns of trait divergence and...

Superoxide is promoted by sucrose and affects amplitude of circadian rhythms in the evening

Michael Haydon, John Davey & Ángela Román
Plants must coordinate photosynthetic metabolism with the daily environment and adapt rhythmic physiology and development to match carbon availability. Circadian clocks drive biological rhythms which adjust to environmental cues. Products of photosynthetic metabolism, including sugars and reactive oxygen species (ROS), are closely associated with the plant circadian clock and sugars have been shown to provide metabolic feedback to the circadian oscillator. Here, we report a comprehensive sugar-regulated transcriptome of Arabidopsis and identify genes associated with...

Male-biased sexual selection, but not sexual dichromatism, predicts speciation in birds

Justin Cally, Devi Stuart-Fox, Luke Holman, James Dale & Iliana Medina
Sexual selection is thought to shape phylogenetic diversity by affecting speciation or extinction rates. However, the net effect of sexual selection on diversification is hard to predict, because many of the hypothesised effects on speciation or extinction have opposing signs and uncertain magnitudes. Theoretical work also suggests that the net effect of sexual selection on diversification should depend strongly on ecological factors, though this prediction has seldom been tested. Here, we test whether variation in...

Condition-dependent sexual reproduction is driven by benefits, not costs of sex

Isobel Booksmythe, Jessica Lever, Sally Drapes & Matthew Hall
Facultative sexual organisms must allocate resources to both asexual and sexual reproduction. Optimal patterns of investment in sex depend on the relative costs and benefits of each reproductive mode, and may consequently be context- and condition-dependent. Two proposed explanations for the observed variation in investment in sex among facultative sexual lineages invoke alternative condition-dependent scenarios. Under the ‘fitness-associated sex’ hypothesis, sex is predicted when individuals are in poor condition or experience stressful environments. Under the...

The impact of indoor residual spraying on Plasmodium falciparum microsatellite variation in an area of high seasonal malaria transmission in Ghana, West Africa

Dionne Argyropoulos, Shazia Ruybal‐Pesántez, Samantha L. Deed, Abraham R. Oduro, Samuel K. Dadzie, Maxwell A. Appawu, Victor Asoala, Mercedes Pascual, Kwadwo A. Koram, Karen P. Day, Maxwell A. Appawu, Kathryn E. Tiedje, Victor Asoala, Mercedes Pascual, Kwadwo A. Koram, Karen P. Day & Kathryn E. Tiedje
Here, we report the first population genetic study to examine the impact of indoor residual spraying (IRS) on Plasmodium falciparum in humans. This study was conducted in an area of high seasonal malaria transmission in Bongo District, Ghana. IRS was implemented during the dry season (November-May) in three consecutive years between 2013 and 2015 to reduce transmission and attempt to bottleneck the parasite population in humans towards lower diversity with greater linkage disequilibrium. The study...

Measurements of tree motion in the wind collated from multiple studies undertaken in the UK, Puerto Rico and Australia between 1987-2015

T. Jackson, A. Wellpott, S. Van Bloem, A. Achim, K. James & B. Gardiner
This dataset contains high resolution measurements of tree motion in response to wind at six sites. The data was collected using sensors mounted directly onto the tree trunk. The sites are: Rivox, Kershope, Kyloe and Clocaenog in the UK. Guanica in Puerto Rico and six open-grown trees from Australia.

Registration Year

  • 2021
    33

Resource Types

  • Dataset
    27
  • Text
    4
  • Conference Paper
    1
  • Report
    1

Affiliations

  • University of Melbourne
    33
  • Monash University
    5
  • University of Queensland
    3
  • University of Sydney
    3
  • UNSW Sydney
    3
  • Janelia Farm Research Campus
    2
  • University of Tasmania
    2
  • Griffith University
    2
  • Department of Planning and Environment
    1
  • College of Charleston
    1