6 Works

Run and output files from: Holocene population expansion of a tropical bee coincides with early human colonisation of Fiji rather than climate change

James B. Dorey, Scott V.C. Groom, Alejandro Velasco-Castrillón, Mark Stevens, Michael S.Y. Lee & Michael P. Schwarz
There is substantial debate about the relative roles of climate change and human activities on biodiversity and species demographies over the Holocene. In some cases, these two factors can be resolved using fossil data, but for many taxa such data are not available. Inferring historical demographies of taxa has become common, but the methodologies are mostly recent and their shortcomings often unexplored. The bee genus Homalictus is developing into a tractable model system for understanding...

Ediacara growing pains: Modular addition and development in Dickinsonia costata

Scott Evans, James G. Gehling, Douglas Erwin & Mary Droser
Constraining patterns of growth using directly observable and quantifiable characteristics can reveal a wealth of information regarding the biology of the Ediacara Biota – the oldest macroscopic, complex community forming organisms in the fossil record. However, these rely on individuals captured at an instant in time at various growth stages, and so different interpretations can be derived from the same material. Here we leverage newly discovered and well-preserved Dickinsonia costata Sprigg 1947 from South Australia,...

Comparative phylogeography reveals consistently shallow genetic diversity in a mitochondrial marker in Antarctic bdelloid rotifers

Diego Fontaneto, Zeyneb Vildan Cakil, Giuseppe Garlasché, Nataliia Iakovenko, Andrea Di Cesare, Ester M. Eckert, Roberto Guidetti, Lina Hamdan, Karel Janko, Dzmitry Lukashanets, Lorena Rebecchi, Stefano Schiaparelli, Tommaso Sforzi, Eva Štefková Kašparová, Alejandro Velasco-Castrillón & Elizabeth Walsh
Aim: The long history of isolation of the Antarctic continent, coupled with the harsh ecological conditions of freezing temperatures could affect the patterns of genetic diversity in the organisms living there. We aim (1) to test whether such pattern can be seen in a mitochondrial marker of bdelloid rotifers, a group of microscopic aquatic and limno-terrestrial animals, and (2) to speculate on the potential mechanisms driving the pattern. Location: focus on Antarctica. Taxon: Rotifera Bdelloidea....

Phylogeography, historical demography and systematics of the world’s smallest pythons (Pythonidae, Antaresia)

Damien Esquerré, Stephen Donnellan, Carlos Pavón-Vázquez, Jéssica Fenker & Scott Keogh
Advances from empirical studies in phylogeography, systematics and species delimitation highlight the importance of integrative approaches for quantifying taxonomic diversity. Genomic data have greatly improved our ability to discern both systematic diversity and evolutionary history. Here we combine analyses of mitochondrial DNA sequences, thousands of genome-wide SNPs and linear and geometric morphometrics on Antaresia, a clade of four currently recognised dwarf pythons from Australia and New Guinea (Antaresia childreni, A. stimsoni, A. maculosa and A....

The roles of aridification and sea level changes in the diversification and persistence of freshwater fish lineages

Sean Buckley, Chris Brauer, Peter Unmack, Michael Hammer & Luciano Beheregaray
While the influence of Pleistocene climatic changes on divergence and speciation has been well-documented across the globe, complex spatial interactions between hydrology and eustatics over longer timeframes may also determine species evolutionary trajectories. Within the Australian continent, glacial cycles were not associated with changes in ice cover and instead largely resulted in fluctuations from moist to arid conditions across the landscape. Here, we investigate the role of hydrological and coastal topographic changes brought about by...

Character set and phylogenetic analyses of the living and fossil egerniine scincids of Australia

Kailah Thorn, Mark Hutchinson, Michael Lee, Aaron Camens & Trevor Worthy
The diverse living Australian lizard fauna contrasts greatly with their limited Oligo-Miocene fossil record. New Oligo-Miocene fossil vertebrates from the Namba Formation (south of Lake Frome, South Australia) were uncovered from multiple expeditions from 2007–2018. Abundant disarticulated material of small vertebrates was concentrated in shallow lenses along the palaeo-lake edges, now exposed on the western shore. The fossiliferous lens occurring within the Namba Formation, also known from Billeroo Creek 2 km northeast of Lake Pinpa,...

Registration Year

  • 2021
    6

Resource Types

  • Dataset
    6

Affiliations

  • South Australian Museum
    6
  • Flinders University
    3
  • University of Adelaide
    1
  • National Museum of Natural History
    1
  • University of Ostrava
    1
  • University of Genoa
    1
  • Australian National University
    1
  • University of Modena and Reggio Emilia
    1
  • National Academy of Sciences of Belarus
    1
  • Virginia Tech
    1