6 Works

Data from: Ancient DNA reveals elephant birds and kiwi are sister taxa and clarifies ratite bird evolution

Kieren J. Mitchell, Bastien Llamas, Julien Soubrier, Nicolas J. Rawlence, Trevor H. Worthy, Jamie Wood, Michael S. Y. Lee & Alan Cooper
The evolution of the ratite birds has been widely attributed to vicariant speciation, driven by the Cretaceous breakup of the supercontinent Gondwana. The early isolation of Africa and Madagascar implies that the ostrich and extinct Madagascan elephant birds (Aepyornithidae) should be the oldest ratite lineages. We sequenced the mitochondrial genomes of two elephant birds and performed phylogenetic analyses, which revealed that these birds are the closest relatives of the New Zealand kiwi and are distant...

Data from: Empirical tests of harvest-induced body-size evolution along a geographic gradient in Australian macropods

Thomas A. A. Prowse, Rachel A. Correll, Christopher N. Johnson, Gavin J. Prideaux & Barry W. Brook
1. Life-history theory predicts the progressive dwarfing of animal populations that are subjected to chronic mortality stress but the evolutionary impact of harvesting terrestrial herbivores has seldom been tested. In Australia, marsupials of the genus Macropus (kangaroos and wallabies) are subjected to size-selective commercial harvesting. Mathematical modelling suggests that harvest quotas (ca. 10–20 % of population estimates annually) could be driving body-size evolution in these species. 2. We tested this hypothesis for three harvested macropod...

Data from: Short-term dispersal response of an endangered Australian lizard varies with time of year

Mehregan Ebrahimi & C. Michael Bull
Dispersal is an important component in the demography of animal populations. Many animals show seasonal changes in their tendency to disperse, reflecting changes in resource availability, mating opportunities, or in population age structure at the time when new offspring enter the population. Understanding when and why dispersal occurs can be important for the management of endangered species. The pygmy bluetongue lizard is an endangered Australian species that occupies and defends single burrow refuges for extended...

Data from: Riverscape genetics identifies replicated ecological divergence across an Amazonian ecotone

Georgina M. Cooke, Erin L. Landguth & Luciano B. Beheregaray
Ecological speciation involves the evolution of reproductive isolation and niche divergence in the absence of a physical barrier to gene flow. The process is one of the most controversial topics of the speciation debate, particularly in tropical regions. Here, we investigate ecologically based divergence across an Amazonian ecotone in the electric fish, Steatogenys elegans. We combine phylogenetics, genome scans and population genetics with a recently developed individual-based evolutionary landscape genetics approach that incorporates selection. This...

Data from: Can novel genetic analyses help to identify low-dispersal marine invasive species?

Peter R. Teske, Jonathan Sandoval-Castillo, Jonathan M. Waters & Luciano B. Beheregaray
Genetic methods can be a powerful tool to resolve the native versus introduced status of populations whose taxonomy and biogeography are poorly understood. The genetic study of introduced species is presently dominated by analyses that identify signatures of recent colonization by means of summary statistics. Unfortunately, such approaches cannot be used in low-dispersal species, in which recently established populations originating from elsewhere in the species' native range also experience periods of low population size because...

Data from: Microsatellite markers from the Ion Torrent: a multi-species contrast to 454 shotgun sequencing

Carole P. Elliott, Neal J. Enright, Richard J. N. Allcock, Michael G. Gardner, Emese Meglécz, Janet Anthony & Siegfried L. Krauss
The development and screening of microsatellite markers have been accelerated by next-generation sequencing (NGS) technology and in particular GS-FLX pyro-sequencing (454). More recent platforms such as the PGM semiconductor sequencer (Ion Torrent) offer potential benefits such as dramatic reductions in cost, but to date have not been well utilized. Here, we critically compare the advantages and disadvantages of microsatellite development using PGM semiconductor sequencing and GS-FLX pyro-sequencing for two gymnosperm (a conifer and a cycad)...

Registration Year

  • 2014
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Resource Types

  • Dataset
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Affiliations

  • Flinders University
    6
  • University of Adelaide
    2
  • University of Montana
    1
  • Murdoch University
    1
  • University of Otago
    1
  • University of Tasmania
    1
  • Macquarie University
    1
  • Shiraz University
    1
  • French National Centre for Scientific Research
    1
  • Landcare Research
    1