9 Works

Data from: The price of looking sexy: visual ecology of a three level predator-prey system

David Outomuro, Linus Söderquist, Frank Johansson, Anders Ödeen & Karin Nordström
Colour signals and colour vision play a pivotal role in intraspecific communication and predator-prey interactions. However, the costs of expressing conspicuous sexual signals at multiple trophic levels have been largely overlooked. Sexual signals can also experience character displacement in sympatric populations of closely-related species, leading to potential changes in conspicuousness. We here investigate a bird-damselfly-fruit fly predator-prey system, where two closely related damselfly species have conspicuous, sexually selected wing coloration. The damselflies can occur in...

Data from: Habitat saturation promotes delayed dispersal in a social reptile

Ben Halliwell, Tobias Uller, David G. Chapple, Michael G. Gardner, Erik Wapstra & Geoffrey M. While
When and where offspring disperse has important implications for the evolutionary emergence and maintenance of group living. In non-cooperative breeders, direct benefits of delayed dispersal are relatively limited, suggesting that decisions regarding whether or not to remain in the parental territory are largely driven by the availability of suitable habitat in which to settle. While there is ample evidence of correlations between habitat saturation and delayed dispersal, experimental tests are rare, particularly for species with...

Data from: A new method for reconstructing brain morphology: applying the brain-neurocranial spatial relationship in an extant lungfish to a fossil endocast

Alice M. Clement, Robin Strand, Johan Nysjö, John A. Long & Per E. Ahlberg
Lungfish first appeared in the geological record over 410 million years ago and are the closest living group of fish to the tetrapods. Palaeoneurological investigations into the group show that unlike numerous other fishes—but more similar to those in tetrapods—lungfish appear to have had a close fit between the brain and the cranial cavity that housed it. As such, researchers can use the endocast of fossil taxa (an internal cast of the cranial cavity) both...

Data from: The role of inhibitory dynamics in the loss and re-emergence of macropodoid tooth traits

Aidan M. C. Couzens, Alistair Robert Evans, Matthew M. Skinner & Gavin J. Prideaux
The reversibility of phenotypic evolution is likely to be strongly influenced by the ability of underlying developmental systems to generate ancestral traits. However, few studies have quantitatively linked these developmental dynamics to traits which re-evolve. In this study we assess how changes in the inhibitory cascade, a developmental system that regulates relative tooth size in mammals, influenced the loss and reversals of the posthypocristid, a molar tooth crest, in the kangaroo superfamily Macropodoidea. We find...

Data from: Bayesian morphological clock methods resurrect placoderm monophyly and reveal rapid early evolution in jawed vertebrates

Benedict King, Tuo Qiao, Michael S. Y. Lee, Min Zhu & John A. Long
The phylogeny of early gnathostomes provides an important framework for understanding one of the most significant evolutionary events, the origin and diversification of jawed vertebrates. A series of recent cladistic analyses have suggested that the placoderms, an extinct group of armoured fish, form a paraphyletic group basal to all other jawed vertebrates. We revised and expanded this morphological data set, most notably by sampling autapomorphies in a similar way to parsimony-informative traits, thus ensuring this...

Data from: Landscape genetics informs mesohabitat preference and conservation priorities for a surrogate indicator species in a highly fragmented river system

James Lean, Michael P. Hammer, Peter J. Unmack, Mark Adams & Luciano B. Beheregaray
Poor dispersal species represent conservative benchmarks for biodiversity management because they provide insights into ecological processes influenced by habitat fragmentation that are less evident in more dispersive organisms. Here we used the poorly dispersive and threatened river blackfish (Gadopsis marmoratus) as a surrogate indicator system for assessing the effects of fragmentation in highly modified river basins and for prioritizing basin-wide management strategies. We combined individual, population and landscape-based approaches to analyze genetic variation in samples...

Data from: The adaptive potential of subtropical rainbowfish in the face of climate change: heritability and heritable plasticity for the expression of candidate genes

Scott R. J. McCairns, Steve Smith, Minami Sasaki, Louis Bernatchez, Luciano B. Beheregaray & R. J. Scott McCairns
Whilst adaptation and phenotypic plasticity might buffer species against habitat degradation associated with global climate change, few studies making such claims also possess the necessary and sufficient data to support them. Doing so requires demonstration of heritable variation in traits affecting fitness under new environmental conditions. We address this issue using an emerging aquatic system to study adaptation to climate change, the crimson-spotted rainbowfish (Melanotaenia duboulayi), a freshwater species from a region of eastern Australia...

Data from: Riverscape genomics of a threatened fish across a hydroclimatically heterogeneous river basin

Chris J. Brauer, Michael P. Hammer & Luciano B. Beheregaray
Understanding how natural selection generates and maintains adaptive genetic diversity in heterogeneous environments is key to predicting the evolutionary response of populations to rapid environmental change. Detecting selection in complex spatial environments remains challenging, especially for threatened species where the effects of strong genetic drift may overwhelm signatures of selection. We carried out a basinwide riverscape genomic analysis in the threatened southern pygmy perch (Nannoperca australis), an ecological specialist with low dispersal potential. High-resolution environmental...

Data from: The cranial endocast of Dipnorhynchus sussmilchi (Sarcopterygii: Dipnoi) and the interrelationships of stem-group lungfishes

Alice M. Clement, Tom J. Challands, John A. Long & Per E. Ahlberg
The first virtual cranial endocast of a lungfish from the Early Devonian, Dipnorhynchus sussmilchi, is described. Dipnorhynchus, only the fourth Devonian lungfish for which a near complete cranial endocast is known, is a key taxon for clarifying primitive character states within the group. A ventrally-expanded telencephalic cavity is present in the endocast of Dipnorhynchus demonstrating that this is the primitive state for “true” Dipnoi. Dipnorhynchus also possesses a utricular recess differentiated from the sacculolagenar pouch...

Registration Year

  • 2016
    9

Resource Types

  • Dataset
    9

Affiliations

  • Flinders University
    9
  • Uppsala University
    3
  • Monash University
    2
  • University of Kent
    1
  • University of Tasmania
    1
  • University of Edinburgh
    1
  • Max Planck Institute for Evolutionary Anthropology
    1
  • South Australian Museum
    1
  • Chinese Academy of Sciences
    1
  • University of Veterinary Medicine
    1