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  • Shelby Middleton

    Shelby Middleton

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Shelby Middleton

Overview of thesis

My PhD project aims to clarify the taxonomy of brushtail possum (Trichosurus sp.)populations across Australia by examining phylogenetic relationships across the species range using molecular and morphological data. The phenotypic variation within the brushtail possums, as well as their widespread distribution across almost all of Australia, has resulted in a complicated taxonomic history. Several populations have undergone severe declines since European colonisation, and resolving the species complex is critical to allow for appropriate protection and management of the declining phenotypes.

This study will combine comprehensive morphological and molecular data from localities across Australia. Morphological variation across the species range will be assessed by analysing cranial and dental morphometrics, external measurements, and pelt colouration from museum specimens across Australia. A molecular phylogeny will then be produced from single nuclear polymorphism (SNP) data to determine whether geographically separated populations correspond with genetic differences. Finally, a total evidence analysis will combine the morphological and molecular data to clarify the taxonomy of the genus.

Qualifications

  • Batchelor of Science Environmental Biology, Curtin University (2017-2020)
  • Honours Environmental Biology, Curtin University (2020-2021)

Research

Research Interests

  • Morphological variation based on cranial and dental features
  • Species and subspecies delimitation using molecular and morphological data
  • Evolutionary processes that have led to variation within Australian mammal species

Past Teaching

  • SCI2118 Australian Biota: Laboratory demonstrator semester 2 2022

Supervisors

  • Dr Robert Davis, Edith Cowan University
  • Dr Anna Hopkins, Edith Cowan University
  • Dr Kenny Travouillon, Western Australian Museum
  • Dr Linette Umbrello, Western Australian Museum, Department of Biodiversity Conservation and Attractions
  • Dr Harriet Mills, Department of Biodiversity Conservation and Attractions

Contact

Shelby Middleton
PhD Student
School of Science
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