Species relationships in the dasyurid marsupial genus Pseudantechinus (Marsupialia : Dasyuridae): a re-examination of the taxonomic status of Pseudantechinus roryi

Umbrello, Linette S.; Woolley, P. A.; Westerman, Michael

doi:10.1071/zo17059

Cited by 15 publications

(11 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the Φ ST results between the Hamersley and Chichester/Fortescue subregions suggest some differentiation of populations in the east and western parts of the Pilbara region. Two other small dasyurids, Pseudantechinus macdonnellensis and Sminthopsis psammophila , which similar to S. youngsoni are distributed in sandy deserts, also did not exhibit any clear phylogeographic structure throughout their ranges [ 42 , 66 ]. The more recent formation of sand dune deserts has led to lower lineage age, intraspecific structure, and strong signals of population expansion in several gecko species [ 14 , 67 ] and hummock grasses [ 23 ] compared to related species occurring in more geographically structured habitats.…”

Section: Discussionmentioning

confidence: 99%

“…All regions were amplified via polymerase chain reaction (PCR) as described in [ 42 ], following the PCR cycling conditions of [ 43 ]. For the amplification of CR for S. youngsoni , the annealing temperature was increased from 50 to 57 °C due to the presence of large repeat regions at the 5′ end (see [ 44 ]).…”

Section: Methodsmentioning

confidence: 99%

“…DNA purification and bidirectional sequencing was carried out at the Australian Genome Research Facility, Perth WA. Forward-reverse assemblies, quality control, and alignment of sequences was performed in GENEIOUS v.9.1.7 [ 45 ], as described in [ 42 ]. Final sequence length for CR ranged from 560 to 800 bp, and ω-globin ranged from 770 to 790 bp ( Table 2 ).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Multi-Species Phylogeography of Arid-Zone Sminthopsinae (Marsupialia: Dasyuridae) Reveals Evidence of Refugia and Population Expansion in Response to Quaternary Change

Umbrello

Didham

How

et al. 2020

Genes

View full text Add to dashboard Cite

Historical population contraction and expansion events associated with Pleistocene climate change are important drivers of intraspecific population structure in Australian arid-zone species. We compared phylogeographic patterns among arid-adapted Dasyuridae (Sminthopsis and Planigale) with close phylogenetic relationships and similar ecological roles to investigate the drivers of phylogeographic structuring and the importance of historical refugia. We generated haplotype networks for two mitochondrial (control region and cytochrome b) and one nuclear (omega-globin) gene from samples distributed across each species range. We used ΦST to test for a genetic population structure associated with the four Pilbara subregions, and we used expansion statistics and Bayesian coalescent skyline analysis to test for signals of historical population expansion and the timing of such events. Significant population structure associated with the Pilbara and subregions was detected in the mitochondrial data for most species, but not with the nuclear data. Evidence of population expansion was detected for all species, and it likely began during the mid-late Pleistocene. The timing of population expansion suggests that these species responded favorably to the increased availability of arid habitats during the mid-late Pleistocene, which is when previously patchy habitats became more widespread. We interpret our results to indicate that the Pilbara region could have acted as a refugium for small dasyurids.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Multi-Species Phylogeography of Arid-Zone Sminthopsinae (Marsupialia: Dasyuridae) Reveals Evidence of Refugia and Population Expansion in Response to Quaternary Change

Umbrello

Didham

How

et al. 2020

Genes

View full text Add to dashboard Cite

show abstract

“…DNA extractions and amplifications were performed as described in Umbrello et al (2017). New DNA sequences were obtained for two nuclear genesß fibrinogen intron 7 (bfib7) and intron 2 of ω-globinand for three mitochondrial genescytochrome b (cytb), 12S rRNA (12S), and control region (CR).…”

Section: Taxon Samplingmentioning

confidence: 99%

On the composition of

2023

View full text Add to dashboard Cite

Morphological and molecular studies have consistently suggested that Sminthopsis, as currently defined, is rendered paraphyletic by the kultarr (Antechinomys laniger). They have also suggested a sister relationship between the kultarr and the long-tailed dunnart. Based on DNA sequence data from multiple mitochondrial and nuclear gene loci we reassign the long-tailed dunnart (formerly Sminthopsis longicaudata) to Antechinomys. Although there is good evidence of genetic structure within the kultarr (A. laniger), it does not correspond to the two currently recognised subspecies, viz A. laniger laniger and A. l. spenceri. We conclude that Antechinomys consists of two species, A. laniger and A. longicaudatus, consistent with morphology. We suggest that the observed genetic and morphological variation within A. laniger merits a more thorough investigation of more samples from across its range to resolve the taxonomy.

show abstract

“…Indeed, such mountain systems have preserved abundant archaeological evidence of human occupation during the late Pleistocene, indicating they were important sites allowing hunter‐gatherer populations to persist throughout the LGM (Smith, 2013). More recently these arid uplands have been the focus of detailed molecular studies, with results repeatedly identifying substantially higher levels of genetic diversity in rocky upland areas such as in the Pilbara, Kimberley and central Australia compared to adjacent desert lowlands (Blacket et al., 2001; Fujita et al., 2010; Marin, Donnellan, Hedges, Doughty, et al., 2013; Pepper et al., 2011, 2017; Pepper et al., 2011; Umbrello et al., 2017). These findings support the idea that regions of high topographic and geological complexity, which also provided greater associated relative climatic stability, allowed more taxa to persist and diversify in these uplands as the surrounding landscapes dried out.…”

Section: The Evolution Of Arid Zone Biodiversitymentioning

confidence: 99%

Life in the “dead heart” of Australia: The geohistory of the Australian deserts and its impact on genetic diversity of arid zone lizards

Pepper

Keogh

2021

Journal of Biogeography

View full text Add to dashboard Cite

Aim The Australian deserts are home to a remarkable diversity of taxa that might appear to have evolved in the absence of topographic and physical barriers to dispersal. In fact this is a biogeographical illusion, as the dunefields of the modern arid zone obscure the fossil landscapes of the wet desert that existed for much of the Cenozoic. As the geohistory of Australia's arid zone is not widely understood by biologists, we review its geological development and contemporary landscapes in an accessible way, and describe eight biogeographical hypotheses centred on how geomorphology, evolutionary history and contemporary ecological factors interact to shape diversification patterns in the desert lowlands. Location Australia. Taxon Lizards. Methods We review the arid zone landscapes before and after the development of the vast dunefields. As lizards represent a significant component of genetic studies that sample widely across the arid biome, we focus on this taxonomic group to establish emerging patterns. Results Recent geological work suggests that the dunefields never formed extensive mobile landscapes such as in the Sahara, but rather were a mosaic of vegetated and stable dune surfaces with scattered bare, mobile patches. Large fluvial systems in the eastern arid zone during the Pleistocene also are at odds with the general perception of an arid landscape during this time. Incorporating this geohistorical insight, understanding where landscape heterogeneity is greatest within the arid zone, and where relative homogeneity might facilitate connectivity and gene flow, are at the heart of our biogeographic hypotheses. Main conclusions Patterns are emerging that reflect the underlying influence of geomorphological processes on the genetic structure of Australian desert taxa. Quantifying finer‐scale edaphic complexity across the arid zone, widespread genetic sampling from disparate taxonomic groups, and a more detailed understanding of species ecology and life history will greatly improve our understanding of the ecological and historical drivers of diversity gradients in the Australian deserts.

show abstract

Species relationships in the dasyurid marsupial genus Pseudantechinus (Marsupialia : Dasyuridae): a re-examination of the taxonomic status of Pseudantechinus roryi

Cited by 15 publications

References 21 publications

Multi-Species Phylogeography of Arid-Zone Sminthopsinae (Marsupialia: Dasyuridae) Reveals Evidence of Refugia and Population Expansion in Response to Quaternary Change

Multi-Species Phylogeography of Arid-Zone Sminthopsinae (Marsupialia: Dasyuridae) Reveals Evidence of Refugia and Population Expansion in Response to Quaternary Change

On the composition of

Life in the “dead heart” of Australia: The geohistory of the Australian deserts and its impact on genetic diversity of arid zone lizards

Contact Info

Product

Resources

About