24 Works

Data from: Female song is widespread and ancestral in songbirds

Karan J. Odom, Michelle L. Hall, Katharina Riebel, Kevin E. Omland & Naomi E. Langmore
Bird song has historically been considered an almost exclusively male trait, an observation fundamental to the formulation of Darwin’s theory of sexual selection. Like other male ornaments, song is used by male songbirds to attract females and compete with rivals. Thus, bird song has become a textbook example of the power of sexual selection to lead to extreme neurological and behavioural sex differences. Here we present an extensive survey and ancestral state reconstruction of female...

Data from: Phylogeographic structure, demographic history, and morph composition in a colour polymorphic lizard

Claire A. McLean, Devi Stuart-Fox & Adnan Moussalli
In polymorphic species, population divergence in morph composition and frequency has the potential to promote speciation. We assessed the relationship between geographic variation in male throat colour polymorphism and phylogeographic structure in the tawny dragon lizard, Ctenophorus decresii. We identified four genetically distinct lineages, corresponding to two polymorphic lineages in the Northern Flinders Ranges and Southern Flinders Ranges/Olary Ranges regions respectively, and a monomorphic lineage in the Mt Lofty Ranges/Kangaroo Island region. The degree of...

Data from: The effect of virus-blocking Wolbachia on male competitiveness of the dengue vector mosquito, Aedes aegypti

Michal Segoli, Ary A. Hoffmann, Jane Lloyd, Gavin J. Omodei & Scott A. Ritchie
Background: The bacterial endosymbiont Wolbachia blocks the transmission of dengue virus by its vector mosquito Aedes aegypti, and is currently being evaluated for control of dengue outbreaks. Wolbachia induces cytoplasmic incompatibility (CI) that results in the developmental failure of offspring in the cross between Wolbachia-infected males and uninfected females. This increases the relative success of infected females in the population, thereby enhancing the spread of the beneficial bacterium. However, Wolbachia spread via CI will only...

Data from: Predicting climate warming effects on green turtle hatchling viability and dispersal performance

Catherine Cavallo, David Booth, Tim Dempster, Michael R. Kearney, Ella Kelly & Tim S. Jessop
1. Ectotherms are taxa considered highly sensitive to rapid climate warming. This is because body temperature profoundly governs their performance, fitness and life history. Yet, while several modelling approaches currently predict thermal effects on some aspects of life history and demography, they do not consider how temperature simultaneously affects developmental success and offspring phenotypic performance, two additional key attributes that are needed to comprehensively understand species responses to climate warming. 2. Here, we developed a...

Data from: Crossing the line: increasing body size in a trans-Wallacean lizard radiation (Cyrtodactylus, Gekkota)

Paul M. Oliver, Phillip Skipwith & Michael S. Y. Lee
The region between the Asian and Australian continental plates (Wallacea) demarcates the transition between two differentiated regional biotas. Despite this striking pattern, some terrestrial lineages have successfully traversed the marine barriers of Wallacea and subsequently diversified in newly colonized regions. The hypothesis that these dispersals between biogeographic realms are correlated with detectable shifts in evolutionary trajectory has however rarely been tested. Here, we analyse the evolution of body size in a widespread and exceptionally diverse...

Data from: Resistance and resilience to changing climate and fire regime depend on plant functional traits

Neal J. Enright, Joseph B. Fontaine, Byron B. Lamont, Ben P. Miller & Vanessa C. Westcott
Changing disturbance-climate interactions will drive shifts in plant communities: these effects are not adequately quantified by environmental niche models used to predict future species distributions. We quantified the effects of more frequent fire and lower rainfall - as projected to occur under a warming and drying climate - on population responses of shrub species in biodiverse Mediterranean-climate type shrublands near Eneabba, southwestern Australia. Using experimental fires, we measured the density of all shrub species for...

Data from: A single panmictic population of endemic red crabs, Gecarcoidea natalis, on Christmas Island with high levels of genetic diversity

Andrew R. Weeks, Michael J. Smith, Anthony Van Rooyen, Dion Maple & Adam D. Miller
The red crab, Gecarcoidea natalis, is endemic to Christmas Island in the Indian Ocean and largely responsible for shaping the unique ecosystem found throughout the island’s rainforests. However, the introduction and establishment of supercolonies of the highly invasive yellow crazy ant, Anoplolepis gracilipes, has decimated red crab numbers over the last several decades. This poses a significant risk to the future conservation of G. natalis and consequently threatens the integrity of the unique island ecosystem....

Data from: Territory configuration moderates the frequency of extra-group mating in superb fairy-wrens

Glen C. Bain, Michelle L. Hall & Raoul A. Mulder
The frequency of extra-pair paternity (EPP) in socially monogamous birds varies substantially between and within species, but ecological drivers of this variation remain poorly understood. Habitat configuration could influence EPP by moderating access to extra-pair mates, because species occupying territories in a clustered ‘honeycomb’ configuration have a larger pool of potential extra-group mates in their immediate neighbourhood than those living in linearly arranged territories (e.g. along narrow strips of riparian or fragmented habitat). We exploited...

Data from: Morphological and moisture availability controls of the leaf area-to-sapwood area ratio: analysis of measurements on Australian trees

Henrique Furstenau Togashi, Ian Colin Prentice, Bradley John Evans, David Ian Forrester, Paul Drake, Paul Feikema, Kim Brooksbank, Derek Eamus, Daniel Taylor & Iain Colin Prentice
1. The leaf area-to-sapwood area ratio (LA:SA) is a key plant trait that links photosynthesis to transpiration. The pipe model theory states that the sapwood cross-sectional area of a stem or branch at any point should scale isometrically with the area of leaves distal to that point. Optimization theory further suggests that LA:SA should decrease toward drier climates. Although acclimation of LA:SA to climate has been reported within species, much less is known about the...

Data from: Exploring the role of Micronesian islands in the maintenance of coral genetic diversity in the Pacific Ocean

Sarah W. Davies, Eric A. Treml, Carly D. Kenkel & Mikhail V. Matz
Understanding how genetic diversity is maintained across patchy marine environments remains a fundamental problem in marine biology. The Coral Triangle, located in the Indo-West Pacific, is the center of marine biodiversity and has been proposed as an important source of genetic diversity for remote Pacific reefs. Several studies highlight Micronesia, a scattering of hundreds of small islands situated within the North Equatorial Counter Current, as a potentially important migration corridor. To test this hypothesis, we...

Data from: Local adaptation and divergence in colour signal conspicuousness between monomorphic and polymorphic lineages in a lizard

Claire A. McLean, Adnan Moussalli & Devi Stuart-Fox
Population differences in visual environment can lead to divergence in multiple components of animal coloration including signalling traits and colour patterns important for camouflage. Divergence may reflect selection imposed by different receivers (conspecifics, predators), which depends in turn on the location of the colour patch. We tested for local adaptation of two genetically and phenotypically divergent lineages of a rock-inhabiting lizard, Ctenophorus decresii, by comparing the visual contrast of colour patches to different receivers in...

Data from: Evidence for adaptive divergence of thermal responses among Bemisia tabaci populations from tropical Colombia following a recent invasion

F. Díaz, V. Muñoz-Valencia, D. L. Juvinao-Quintero, M. R. Manzano-Martínez, N. Toro-Perea, H. Cárdenas-Henao & A. A. Hoffmann
There is an increasing evidence that populations of ectotherms can diverge genetically in response to different climatic conditions, both within their native range and (in the case of invasive species) in their new range. Here, we test for such divergence in invasive whitefly Bemisia tabaci populations in tropical Colombia, by considering heritable variation within and between populations in survival and fecundity under temperature stress, and by comparing population differences with patterns established from putatively neutral...

Data from: Directional dispersal has not evolved during the cane toad invasion

Gregory P. Brown, Benjamin L. Phillips & Richard Shine
1. The ability to disperse along a consistent compass heading strongly affects the rate and efficiency of an animal's displacement, and thus is under selection at the expanding edge of a biological invasion. 2. We used radiotelemetry to assess whether the dispersal direction of cane toads (Rhinella marina) changed as a function of time since invasion, by comparing (i) toads at a single site monitored annually for 10 years subsequent to toad arrival; (ii) toads...

Data from: Nuclear and mitochondrial patterns of population structure in North Pacific false killer whales (Pseudorca crassidens)

Karen K. Martien, Susan J. Chivers, Robin W. Baird, Frederick I. Archer, Antoinette M. Gorgone, Brittany L. Hancock-Hanser, David Mattila, Daniel J. McSweeney, Erin M. Oleson, Carol Palmer, Victoria L. Pease, Kelly M. Robertson, Gregory S. Schorr, Mark B. Schultz, Daniel L. Webster & Barbara L. Taylor
False killer whales (Pseudorca crassidens) are large Delphinids typically found in deep water far offshore. However, in the Hawaiian Archipelago there are two resident island-associated populations of false killer whales, one in the waters around the main Hawaiian Islands (MHI) and one in the waters around the Northwestern Hawaiian Islands (NWHI). We use mitochondrial DNA (mtDNA) control region sequences and genotypes from 16 nuclear (nucDNA) microsatellite loci from 206 individuals to examine levels of differentiation...

Data from: Estimating population size in the presence of temporary migration using a joint analysis of telemetry and capture recapture data

Tomas Bird, Jarod Lyon, Michael McCarthy, Richard Barker & Simon Nicol
1.Temporary migration – where individuals can leave and re-enter a sampled population – is a feature of many capture–mark–recapture (CMR) studies of mobile populations which, if unaccounted for, can lead to biased estimates of population capture probabilities and consequently biased estimates of population abundance. 2. We present a method for incorporating radiotelemetry data within a CMR study to eliminate bias due to temporary migration using a Bayesian state-space model. 3. Our results indicate that using...

Data from: Phylogeography of var gene repertoires reveals fine-scale geospatial clustering of Plasmodium falciparum populations in a highly endemic area

Sofonias K. Tessema, Stephanie L. Monk, Mark B. Schultz, Livingstone Tavul, John C. Reeder, Peter M. Siba, Ivo Mueller & Alyssa E. Barry
Plasmodium falciparum malaria is a major global health problem that is being targeted for progressive elimination. Knowledge of local disease transmission patterns in endemic countries is critical to these elimination efforts. To investigate fine-scale patterns of malaria transmission, we have compared repertoires of rapidly evolving var genes in a highly endemic area. A total of 3680 high quality DBLα sequences were obtained from 68 P. falciparum isolates from ten villages spread over two distinct catchment...

Data from: The relative roles of cultural drift and acoustic adaptation in shaping syllable repertoires of island bird populations change with time since colonization

Dominique A. Potvin & Sonya M. Clegg
In birds, song divergence often precedes and facilitates divergence of other traits. We assessed the relative roles of cultural drift, innovation and acoustic adaptation in divergence of island bird dialects, using silvereyes (Zosterops lateralis). In recently colonized populations, syllable diversity was not significantly lower than source populations, shared syllables between populations decreased with increasing number of founder events and dialect variation displayed contributions from both habitat features and drift. The breadth of multivariate space occupied...

Data from: Tree-hugging koalas demonstrate a novel thermoregulatory mechanism for arboreal mammals

Natalie J. Briscoe, Kathrine A. Handasyde, Stephen R. Griffiths, Warren P. Porter, Andrew Krockenberger & Michael R. Kearney
How climate impacts organisms depends not only on their physiology, but also whether they can buffer themselves against climate variability via their behaviour. One of the way species can withstand hot temperatures is by seeking out cool microclimates, but only if their habitat provides such refugia. Here, we describe a novel thermoregulatory strategy in an arboreal mammal, the koala Phascolarctos cinereus. During hot weather, koalas enhanced conductive heat loss by seeking out and resting against...

Data from: Sociosexual and communication deficits after traumatic injury to the developing murine brain

Bridgette D. Semple, Linda J. Noble-Haeusslein, Yong Jun Kwon, Pingdewinde N. Sam, A. Matt Gibson, Sarah Grissom, Sienna Brown, Zahra Adahman, Christopher A. Hollingsworth, Alexander Kwakye, Kayleen Gimlin, Elizabeth A. Wilde, Gerri Hanten, Harvey S. Levin, A. Katrin Schenk & Elisabeth A. Wilde
Despite the life-long implications of social and communication dysfunction after pediatric traumatic brain injury, there is a poor understanding of these deficits in terms of their developmental trajectory and underlying mechanisms. In a well-characterized murine model of pediatric brain injury, we recently demonstrated that pronounced deficits in social interactions emerge across maturation to adulthood after injury at postnatal day (p) 21, approximating a toddler-aged child. Extending these findings, we here hypothesized that these social deficits...

Data from: Experimental manipulation of female reproduction demonstrates its fitness costs in kangaroos

Uriel Gélin, Michelle E. Wilson, Graeme Coulson & Marco Festa-Bianchet
1. When resources are scarce, female mammals should face a trade-off between lactation and other life-history traits such as growth, survival and subsequent reproduction. Kangaroos are ideal to test predictions about reproductive costs because they may simultaneously lactate and carry a young, and have indeterminate growth and a long breeding season. 2. An earlier study in three of our five study populations prevented female eastern grey kangaroos (Macropus giganteus) from reproducing during one reproductive season...

Data from: Multifarious selection through environmental change: acidity and predator-mediated adaptive divergence in the moor frog (Rana arvalis)

Andrés Egea-Serrano, Sandra Hangartner, Anssi Laurila & Katja Räsänen
Environmental change can simultaneously cause abiotic stress and alter biological communities, yet adaptation of natural populations to co-changing environmental factors is poorly understood. We studied adaptation to acid and predator stress in six moor frog (Rana arvalis) populations along an acidification gradient, where abundance of invertebrate predators increases with increasing acidity of R. arvalis breeding ponds. First, we quantified divergence among the populations in anti-predator traits (behaviour and morphology) at different rearing conditions in the...

Data from: Do evolutionary constraints on thermal performance manifest at different organizational scales?

Ben L. Phillips, John Llewelyn, Amberlee Hatcher, Stewart Macdonald & Craig Moritz
The two foremost hypotheses on the evolutionary constraints on an organism's thermal sensitivity – the hotter-is-better expectation, and the specialist–generalist trade-off – have received mixed support from empirical studies testing for their existence. Could these conflicting results reflect confusion regarding the organizational level (i.e. species > population > individual) at which these constraints should manifest? We propose that these evolutionary constraints should manifest at different organizational levels because of differences in their underlying causes and...

Data from: Restricting access to invasion hubs enables sustained control of an invasive vertebrate

Mike Letnic, Jonathan K. Webb, Tim J. Jessop & Tim Dempster
Biological invasions often occur through expansion of satellite populations that become established at ‘invasion hubs’. Invasion hubs can result from random dispersal events, but frequently arise when invading individuals actively choose habitats using cues that signify high-quality environments where the fitness consequences are positive. Theoretical studies suggest that targeted control at invasion hubs can effectively suppress the populations and impacts of invaders. In arid Australia, small dams that provide water for livestock function as invasion...

Data from: Does predation risk affect mating behavior? An experimental test in dumpling squid (Euprymna tasmanica)

Amanda M. Franklin, Devi Stuart-Fox & Zoe E. Squires
Introduction: One of the most important trade-offs for many animals is that between survival and reproduction. This is particularly apparent when mating increases the risk of predation, either by increasing conspicuousness, reducing mobility or inhibiting an individual’s ability to detect predators. Individuals may mitigate the risk of predation by altering their reproductive behavior (e.g. increasing anti-predator responses to reduce conspicuousness). The degree to which individuals modulate their reproductive behavior in relation to predation risk is...

Registration Year

  • 2014
    24

Resource Types

  • Dataset
    24

Affiliations

  • University of Melbourne
    24
  • James Cook University
    3
  • Australian National University
    2
  • University of Sydney
    2
  • University of Technology Sydney
    2
  • University of Western Australia
    2
  • Museum Victoria
    2
  • National Centre for Groundwater Research and Training
    1
  • The University of Texas at Austin
    1
  • Université de Sherbrooke
    1