ORCID Profile
0000-0002-2589-1298
Current Organisation
University of Southern Queensland
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Publisher: Magnolia Press
Date: 08-07-2011
DOI: 10.11646/ZOOTAXA.2946.1.11
Abstract: Mooi & Gill (2010) argued that careful character study and well-understood synapomorphies do not have the strong role that they deserve as the basis for evidence in phylogenetics. We agree, but suggest that the problem is even greater. Not only character synapomorphies, but also other forms of phylogenetic evidence, typically do not receive the critical assessment that would support phylogenetic inference. In this paper, our goal is to not simply to highlight problems but to suggest solutions. We will suggest that a stronger role for corroboration assessment in systematics could overcome these problems in phylogenetic inference.
Publisher: Wiley
Date: 19-03-2012
Publisher: Informa UK Limited
Date: 2002
DOI: 10.1071/MR02003
Publisher: Wiley
Date: 13-09-2012
Publisher: Oxford University Press (OUP)
Date: 23-05-2016
Abstract: This work describes an efficient and highly scalable monolayer system to differentiate human pluripotent stem cells (hPSCs) into skeletal muscle cells (SkMCs) and demonstrates disease-specific phenotypes in SkMCs derived from both embryonic and induced hPSCs affected with facioscapulohumeral muscular dystrophy. This study represents the first human stem cell-based cellular model for a muscular dystrophy that is suitable for high-throughput screening and drug development.
Publisher: Magnolia Press
Date: 15-03-2012
DOI: 10.11646/ZOOTAXA.3235.1.6
Abstract: As part of the Zootaxa special issue on molecules and morphology in systematics, Faith et al. (2011) discussed how corroboration assessment can support integrative systematics. They argued that integrative systematics should be open to a wide variety of potential supporting evidence for phylogenetic (or species) hypotheses, with the condition that (p. 52) “there would be a requirement that all such supporting evidence be exposed to a skeptical assessment that, in effect, tries to ‘explain the evidence away’”. Faith et al. (2011) argued that corroboration assessment provides this critical examination of evidence, capturing the idea that supposed supporting evidence for an hypothesis is only impressive to the extent that the evidence cannot easily be accounted for by other factors, including chance. This characterization accords with Popper’s (1983: 238) idea that evidence that truly corroborates an hypothesis ‘should be improbable on our background knowledge’ (for discussion, see Faith 1992 Faith & Cranston 1992 Faith 2004, 2006).
Publisher: Elsevier BV
Date: 09-2008
DOI: 10.1016/J.YMPEV.2008.05.006
Abstract: Evolutionary relationships of the Pectinidae were examined using two mitochondrial genes (12S rRNA, 16S rRNA) and one nuclear gene (Histone H3) for 46 species. Outgroup taxa from Propeamussidae, Spondylidae and Limidae were also sequenced to examine the impact of outgroup choice on pectinid topologies. Our phylogenetic analyses resolved the Pectinidae as monophyletic, but many of the subfamilies and tribes within the family do not form monophyletic clades. The paraphyletic Aequipectinini group is the most basal member of the Pectinidae, with the Chlamydinae and Palliolinae representing the most recently derived pectinid groups. These results are in contrast with the current morphological hypothesis of Pectinidae evolution, which suggests the Chlamydinae and Pallioline are basal groups within the Pectinidae. Ingroup topology was found to be sensitive to outgroup choice and increasing taxon s ling within the Pectinidae resulted in more robust phylogenies.
Publisher: Springer Science and Business Media LLC
Date: 14-06-2011
Abstract: We employed a phylogenetic framework to identify patterns of life habit evolution in the marine bivalve family Pectinidae. Specifically, we examined the number of independent origins of each life habit and distinguished between convergent and parallel trajectories of life habit evolution using ancestral state estimation. We also investigated whether ancestral character states influence the frequency or type of evolutionary trajectories. We determined that temporary attachment to substrata by byssal threads is the most likely ancestral condition for the Pectinidae, with subsequent transitions to the five remaining habit types. Nearly all transitions between life habit classes were repeated in our phylogeny and the majority of these transitions were the result of parallel evolution from byssate ancestors. Convergent evolution also occurred within the Pectinidae and produced two additional gliding clades and two recessing lineages. Furthermore, our analysis indicates that byssal attaching gave rise to significantly more of the transitions than any other life habit and that the cementing and nestling classes are only represented as evolutionary outcomes in our phylogeny, never as progenitor states. Collectively, our results illustrate that both convergence and parallelism generated repeated life habit states in the scallops. Bias in the types of habit transitions observed may indicate constraints due to physical or ontogenetic limitations of particular phenotypes.
Publisher: EpiSmart Science Vector Ltd
Date: 03-2019
Publisher: Elsevier BV
Date: 09-2009
DOI: 10.1016/J.YMPEV.2009.03.033
Abstract: We examined the species groups relationships of the freshwater snail genus Austropeplea using mitochondrial, nuclear and morphological markers in addition to traditional methods of shell shape analysis. Based primarily on the results of a combined molecular and morphological analysis, s les of the nominal species A. tomentosa form distinct lineages. The New Zealand populations of A. tomentosa are a very distinct lineage from any of the Australian populations attributed to A. tomentosa. Furthermore, within the Australian group, three lineages, south Australia, Tasmania and eastern Australia, appear to have undergone recent and/or rapid speciation events. S les assigned to A. lessoni were resolved as two distinct lineages, representing the eastern and northern Australian populations. Kutikina hispida was resolved within the Australian A. tomentosa clade. Molecular results for A. viridis suggests that it is also composed of at least two distinct lineages that could be treated as species. Incongruence observed between the single mitochondrial, nuclear and morphological topologies highlight the importance of using a number of different datasets in the delimitation of species-group taxa.
Publisher: SAGE Publications
Date: 23-04-2020
Abstract: Authentic student-led inquiry and exposure to scientific research impact students’ science career choices. Given Australian students decline in STEM skills, knowledge of whether such programmes impact student learning is critical. This research examined the short-term impact of an authentic, hands-on research mentor programme on rural student’s science skills. Nine Year 10 students participated in a science academic research programme leading to scientific publications and students collecting of first-hand data from international experiments on a major world-wide health issue. The NSW Department of Education Year 10 VALID assessment scores of this intervention group were compared to a control group. Intervention students had significantly higher overall scores as well as significantly higher scores in 21st century skills. These results were supported by student’s self-assessment of their learning growth. Our study suggests authentic science research mentor programmes are pedagogically advantageous for Year 10 high achieving rural students. Educators’ willingness to embrace these innovative approaches has the potential to produce the next generation of scientists.
Publisher: Springer Science and Business Media LLC
Date: 10-05-2021
DOI: 10.1038/S41598-021-89214-3
Abstract: It has been shown that there are differences in diagnostic accuracy of cancer detection on mammograms, from below 50% in developing countries to over 80% in developed world. One previous study reported that radiologists from a population in Asia displayed a low mammographic cancer detection of 48% compared with over 80% in developed countries, and more importantly, that most lesions missed by these radiologists were spiculated masses or stellate lesions. The aim of this study was to explore the performance of radiologists after undertaking a training test set which had been designed to improve the capability in detecting a specific type of cancers on mammograms. Twenty-five radiologists read two sets of 60 mammograms in a standardized mammogram reading room. The first test set focused on stellate or spiculated masses. When radiologists completed the first set, the system displayed immediate feedback to the readers comparing their performances in each case with the truth of cancer cases and cancer types so that the readers could identify in idual-based errors. Later radiologists were asked to read the second set of mammograms which contained different types of cancers including stellate/spiculated masses, asymmetric density, calcification, discrete mass and architectural distortion. Case sensitivity, lesion sensitivity, specificity, receiver operating characteristics (ROC) and Jackknife alternative free-response receiver operating characteristics (JAFROC) were calculated for each participant and their diagnostic accuracy was compared between two sessions. Results showed significant improvement among radiologists in case sensitivity (+ 11.4% P 0.05), lesion sensitivity (+ 18.7% P 0.01) and JAFROC (+ 11% P 0.01) in the second set compared with the first set. The increase in diagnostic accuracy was also recorded in the detection of stellate/spiculated mass (+ 20.6% P 0.05). This indicated that the performance of radiologists in detecting malignant lesions on mammograms can be improved if an appropriate training intervention is applied after the readers’ weakness and strength are identified.
Publisher: Wiley
Date: 10-06-2010
No related grants have been discovered for Louise Puslednik.