40 Works

Data from: Architecture of the sperm whale forehead facilitates ramming combat

Olga Panagiotopoulou, Panagiotis Spyridis, Hyab Mehari Abraha, David R. Carrier & Todd C. Pataky
Herman Melville’s novel Moby Dick was inspired by historical instances in which large sperm whales (Physeter macrocephalus L.) sank 19th century whaling ships by ramming them with their foreheads. The immense forehead of sperm whales is possibly the largest, and one of the strangest, anatomical structures in the animal kingdom. It contains two large oil-filled compartments, known as the “spermaceti organ” and “junk”, that constitute up to one-quarter of body mass and extend one-third of...

Data from: Automated segmentation of skin strata in reflectance confocal microscopy depth stacks

Samuel C. Hames, Marco Ardigò, H. Peter Soyer, Andrew P. Bradley & Tarl W. Prow
Reflectance confocal microscopy (RCM) is a powerful tool for in-vivo examination of a variety of skin diseases. However, current use of RCM depends on qualitative examination by a human expert to look for specific features in the different strata of the skin. Developing approaches to quantify features in RCM imagery requires an automated understanding of what anatomical strata is present in a given en-face section. This work presents an automated approach using a bag of...

Data from: Getting a head in hard soils: convergent skull evolution and divergent allometric patterns explain shape variation in a highly diverse genus of pocket gophers (Thomomys)

Ariel E. Marcy, Elizabeth A. Hadly, Emma Sherratt, Kathleen Garland & Vera Weisbecker
Background: High morphological diversity can occur in closely related animals when selection favors morphologies that are subject to intrinsic biological constraints. A good example is subterranean rodents of the genus Thomomys, one of the most taxonomically and morphologically diverse mammalian genera. Highly procumbent, tooth-digging rodent skull shapes are often geometric consequences of increased body size. Indeed, larger-bodied Thomomys species tend to inhabit harder soils. We used geometric morphometric analyses to investigate the interplay between soil...

Data from: Functional traits in red flour beetles: the dispersal phenotype is associated with leg length but not body size nor metabolic rate

Pieter A. Arnold, Phill Cassey, Craig R. White & Phillip Cassey
Individuals vary in their ability to disperse. Much of this variation can be described by covarying phenotypic traits that are related to dispersal (constituting the ‘dispersal phenotype’ or ‘dispersal syndrome’), but the nature of the associations among these traits is not well understood. Unravelling the associations among traits that potentially constitute the dispersal phenotype provides a foundation for understanding evolutionary trade-offs due to variation in dispersal. Here, we tested five predictions pertaining to the relationships...

Data from: Australian spiny mountain crayfish and their temnocephalan ectosymbionts: an ancient association on the edge of coextinction?

Jennifer F. Hoyal Cuthill, Kim B. Sewell, Lester R. G. Cannon, Michael A. Charleston, Susan Lawler, D. Timothy J. Littlewood, Peter D. Olson & David Blair
Australian spiny mountain crayfish (Euastacus, Parastacidae) and their ecotosymbiotic temnocephalan flatworms (Temnocephalida, Platyhelminthes) may have co-occurred and interacted through deep time, during a period of major environmental change. Therefore, reconstructing the history of their association is of evolutionary, ecological, and conservation significance. Here, time-calibrated Bayesian phylogenies of Euastacus species and their temnocephalans (Temnohaswellia and Temnosewellia) indicate near-synchronous diversifications from the Cretaceous. Statistically significant cophylogeny correlations between associated clades suggest linked evolutionary histories. However, there is...

Data from: Rapid evolution of the inter-sexual genetic correlation for fitness in Drosophila melanogaster

Julie M. Collet, Sara Fuentes, Jack Hesketh, Mark S. Hill, Paolo Innocenti, Edward H. Morrow, Kevin Fowler & Max Reuter
Sexual antagonism (SA) arises when male and female phenotypes are under opposing selection, yet genetically correlated. Until resolved, antagonism limits evolution towards optimal sex-specific phenotypes. Despite its importance for sex-specific adaptation and existing theory, the dynamics of SA resolution are not well understood empirically. Here, we present data from Drosophila melanogaster, compatible with a resolution of SA. We compared two independent replicates of the 'LHM' population in which SA had previously been described. Both had...

Data from: Using citizen-collected wildlife sightings to predict traffic strike hotspots for threatened species: a case study on the southern cassowary

Hamish A. Campbell, Luke Carpenter-Bundhoo, Ross G. Dwyer & Craig E. Franklin
Assessing the causal factors underpinning the distribution and abundance of wildlife road-induced mortality can be challenging. This is particularly ubiquitous for rare or elusive species, because traffic strikes occur infrequently for these populations and information about localized abundance, distribution, and movements are generally lacking. Here we assessed if citizen-collected sightings data may serve as a low cost and efficient means of gathering long-term animal road-side presence and road crossing information, which could then be used...

Data from: Colder environments did not select for a faster metabolism during experimental evolution of Drosophila melanogaster

Lesley A. Alton, Catriona Condon, Craig Robert White & Michael J. Angilletta
The effect of temperature on the evolution of metabolism has been the subject of debate for a century; however, no consistent patterns have emerged from comparisons of metabolic rate within and among species living at different temperatures. We used experimental evolution to determine how metabolism evolves in populations of Drosophila melanogaster exposed to one of three selective treatments: a constant 16°C, a constant 25°C, or temporal fluctuations between 16 and 25°C. We tested August Krogh's...

Data from: Variation of anal fin egg-spots along an environmental gradient in a haplochromine cichlid fish

Anya Theis, Olivia Roth, Fabio Cortesi, Fabrizia Ronco, Walter Salzburger & Bernd Egger
Male secondary sexual traits are targets of inter- and/or intrasexual selection, but can vary due to a correlation with life-history traits or as by-product of adaptation to distinct environments. Trade-offs contributing to this variation may comprise conspicuousness toward conspecifics versus inconspicuousness toward predators, or between allocating resources into coloration versus the immune system. Here, we examine variation in expression of a carotenoid-based visual signal, anal-fin egg-spots, along a replicate environmental gradient in the haplochromine cichlid...

Data from: Congruent patterns of connectivity can inform management for broadcast spawning corals on the Great Barrier Reef

Lukoschek Vimoksalehi, Cynthia Riginos, Madeleine J.H. Van Oppen, Madeleine J. H. Van Oppen & Vimoksalehi Lukoschek
Connectivity underpins the persistence and recovery of marine ecosystems. The Great Barrier Reef (GBR) is the world's largest coral reef ecosystem and managed by an extensive network of no-take zones; however, information about connectivity was not available to optimize the network's configuration. We use multivariate analyses, Bayesian clustering algorithms and assignment tests of the largest population genetic data set for any organism on the GBR to date (Acropora tenuis, >2500 colonies; >50 reefs, genotyped for...

Data from: Immigrant inviability produces a strong barrier to gene flow between parapatric ecotypes of Senecio lautus

Thomas John Richards & Daniel Ortiz-Barrientos
Speciation proceeds when gene exchange is prevented between populations. Determining the different barriers preventing gene flow can therefore give insights into the factors driving and maintaining species boundaries. These reproductive barriers may result from intrinsic genetic incompatibilities between populations, from extrinsic environmental differences between populations, or a combination of both mechanisms. We investigated the potential barriers to gene exchange between three adjacent ecotypes of an Australian wildflower to determine the strength of individual barriers and...

Data from: Divergent natural selection drives the evolution of reproductive isolation in an Australian wildflower

Thomas J. Richards, Gregory M. Walter, Katrina McGuigan, Daniel Ortiz-Barrientos & Greg M. Walter
Ecological speciation occurs when reproductive isolation evolves between populations adapting to contrasting environments. A key prediction of this process is that the fitness of hybrids between divergent populations should be reduced in each parental environment as a function of the proportion of local genes they carry, a process resulting in ecologically dependent reproductive isolation (RI). To test this prediction, we use reciprocal transplant experiments between adjacent populations of an Australian wildflower, Senecio lautus, at two...

Data from: Restricted grouper reproductive migrations support community-based management

Peter A. Waldie, Glenn R. Almany, Tane H. Sinclair-Taylor, Richard J. Hamilton, Tapas Potuku, Mark A. Priest, Kevin L. Rhodes, Jan Robinson, Joshua E. Cinner & Michael L. Berumen
Conservation commonly requires trade-offs between social and ecological goals. For tropical small-scale fisheries, spatial scales of socially appropriate management are generally small—the median no-take locally managed marine area (LMMA) area throughout the Pacific is less than 1 km2. This is of particular concern for large coral reef fishes, such as many species of grouper, which migrate to aggregations to spawn. Current data suggest that the catchment areas (i.e. total area from which individuals are drawn)...

Data from: Diversification across a heterogeneous landscape

Gregory M. Walter, Melanie J. Wilkinson, Maddie E. James, Thomas J. Richards, J. David Aguirre, Daniel Ortiz-Barrientos & Greg M. Walter
Adaptation to contrasting environments across a heterogeneous landscape favors the formation of ecotypes by promoting ecological divergence. Patterns of fitness variation in the field can show whether natural selection drives local adaptation and ecotype formation. However, to demonstrate a link between ecological divergence and speciation, local adaptation must have consequences for reproductive isolation. Using contrasting ecotypes of an Australian wildflower, Senecio lautus in common garden experiments, hybridization experiments, and reciprocal transplants, we assessed how the...

Data from: Curvilinear telomere length dynamics in a squamate reptile

Beata Ujvari, Peter A. Biro, Jordan E. Charters, Gregory Brown, Kim Heasman, Christa Beckman, Thomas Madsen & Christa Beckmann
The lack of consensus concerning the impact of telomere length (TL) dynamics on survival emphasizes the need for additional studies to evaluate the effect of TL on key life-history processes. Using both cross-sectional and longitudinal data, we therefore explored age-specific TL dynamics in a squamate reptile: the frillneck lizard (Chlamydosaurus kingii). Our cross-sectional analyses revealed that young lizards had short TL, TL increased in medium-aged lizards, but TL decreased in older age cohorts, revealing a...

Data from: Anthropogenic debris ingestion by avifauna in eastern Australia

Lauren Roman, Qamar A. Schuyler, Britta Denise Hardesty & Kathy A. Townsend
Anthropogenic debris in the world’s oceans and coastal environments is a pervasive global issue that has both direct and indirect impacts on avifauna. The number of bird species affected, the feeding ecologies associated with an increased risk of debris ingestion, and selectivity of ingested debris have yet to be investigated in most of Australia’s coastal and marine birds. With this study we aim to address the paucity of data regarding marine debris ingestion in Australian...

Data from: Repeatability of locomotor performance and of morphology - locomotor performance relationships

Cara Conradsen, Jeffrey A Walker, Catherine Perna & Katrina McGuigan
There is good evidence that natural selection drives the evolution of locomotor performance, but the processes that generate among individual variation in locomotion, the substrate upon which selection acts, are relatively poorly understood. We measured prolonged swimming performance, Ucrit, and morphology in a large cohort (n=461) of wildtype zebrafish, Danio rerio, at ∼6 months and again at ∼9 months. Using mixed model analyses to estimate repeatability as the intraclass correlation coefficient, we determined that Ucrit...

Data from: Accounting for uncertainty in dormant life stages in stochastic demographic models

Maria Paniw, Pedro F. Quintana-Ascencio, Fernando Ojeda & Roberto Salguero-Gómez
Dormant life stages are often critical for population viability in stochastic environments, but accurate field data characterizing them are difficult to collect. Such limitations may translate into uncertainties in demographic parameters describing these stages, which then may propagate errors in the examination of population-level responses to environmental variation. Expanding on current methods, we 1) apply data-driven approaches to estimate parameter uncertainty in vital rates of dormant life stages and 2) test whether such estimates provide...

Data from: Patterns of mammalian population decline inform conservation action

Martina M. I. Di Fonzo, Ben Collen, Alienor L. M. Chauvenet & Georgina M. Mace
1. Evaluations of wildlife population dynamics have the potential to convey valuable information on the type of pressure affecting a population and could help predict future changes in the population's trajectory. Greater understanding of different patterns of population declines could provide a useful mechanism for assessing decline severity in the wild and identifying those populations that are more likely to exhibit severe declines. 2. We identified 93 incidences of decline within 75 populations of mammalian...

Data from: Living in flowing water increases resistance to ultraviolet B radiation

Ensiyeh Ghanizadeh-Kazerouni, Craig E. Franklin & Frank Seebacher
Ultraviolet B radiation (UV-B) is an important environmental driver that can affect locomotor performance negatively by inducing production of reactive oxygen species (ROS). Prolonged regular exercise increases antioxidant activities, which may alleviate the negative effects of UV-B-induced ROS. Animals naturally performing exercise, such as humans performing regular exercise or fish living in flowing water, may therefore be more resilient to the negative effects of UV-B. We tested this hypothesis in a fully factorial experiment, where...

Data from: Landscape structure influences urban vegetation vertical structure

Matthew G. E. Mitchell, Dan Wu, Kasper Johansen, Martine Maron, Clive McAlpine & Jonathan R. Rhodes
Vegetation vertical structure is important for biodiversity and ecosystem service provision. In cities, however, while variation in the spatial extent and distribution of vegetation has been widely investigated, vertical vegetation structure and its potential drivers have not. Understanding how vegetation vertical structure varies across cities and identifying the potential drivers of this variation will improve the management of urban vegetation for biodiversity and ecosystem services. We used light detection and ranging (LiDAR) data to quantify...

Data from: Human judgment vs. quantitative models for the management of ecological resources

Matthew H. Holden & Stephen P. Ellner
Despite major advances in quantitative approaches to natural resource management, there has been resistance to using these tools in the actual practice of managing ecological populations. Given a managed system and a set of assumptions, translated into a model, optimization methods can be used to solve for the most cost-effective management actions. However, when the underlying assumptions are not met, such methods can potentially lead to decisions that harm the environment and economy. Managers who...

Data from: Who is spreading avian influenza in the moving duck flock farming network of Indonesia?

Joerg Henning, Dirk U. Pfeiffer, Mark Stevenson, Didik Yulianto, Walujo Priyono & Joanne Meers
Duck populations are considered to be a reservoir of Highly pathogenic avian influenza (HPAI) virus H5N1 in some agricultural production systems, as they are able to shed the virus for several days without clinical signs. Countries endemically affected with HPAI in Asia are characterised by production systems where ducks are fed on post-harvest spilled rice. During this scavenging process it is common for ducks to come into contact with other duck flocks or wild birds,...

Data from: Multimodal signals: ultraviolet reflectance and chemical cues in stomatopod agonistic encounters

Amanda M. Franklin, Justin N. Marshall & Sara M. Lewis
Complex signals are commonly used during intraspecific contests over resources to assess an opponent's fighting ability and/or aggressive state. Stomatopod crustaceans may use complex signals when competing aggressively for refuges. Before physical attacks, stomatopods assess their opponents using chemical cues and perform threat displays showing a coloured patch, the meral spot. In some species, this spot reflects UV. However, despite their complex visual system with up to 20 photoreceptor classes, we do not know if...

Data from: Extracting DNA from ‘jaws’: high yield and quality from archived tiger shark (Galeocerdo cuvier) skeletal material

Einar E. Nielsen, Jess A.T. Morgan, Safia L. Maher, Janette Edson, Maely Gauthier, Julian Pepperell, B. J. Holmes, Michael B. Bennett, Jennifer R. Ovenden & J. A. T. Morgan
Archived specimens are highly valuable sources of DNA for retrospective genetic/genomic analysis. However, often limited effort has been made to evaluate and optimize extraction methods, which may be crucial for downstream applications. Here, we assessed and optimized the usefulness of abundant archived skeletal material from sharks as a source of DNA for temporal genomic studies. Six different methods for DNA extraction, encompassing two different commercial kits and three different protocols, were applied to material, so-called...

Registration Year

  • 2016
    40

Resource Types

  • Dataset
    40

Affiliations

  • University of Queensland
    40
  • University of Sydney
    5
  • James Cook University
    4
  • University of Melbourne
    3
  • Commonwealth Scientific and Industrial Research Organisation
    3
  • Australian National University
    2
  • University of Tasmania
    2
  • Monash University
    2
  • University College London
    2
  • University of Exeter
    2