Reassessment of the subspecific status of the Australian Wet Tropics yellow-bellied glider, Petaurus australis
Steven J. B. Cooper A B * , Kenny J. Travouillon C , Kristofer M. Helgen B D , Kathleen Saint A , Rupert Russell E and John Winter F
+ Author Affiliations
- Author Affiliations
A South Australian Museum, North Terrace, Adelaide, SA 5000 Australia.
B Environment Institute, School of Biological Sciences, The University of Adelaide, SA 5005 Australia.
C Western Australian Museum, Collections and Research, 49 Kew Street, Welshpool, WA 6106, Australia.
D Australian Museum Research Institute, Australian Museum, Sydney, NSW 2010, Australia.
E PO Box 63, Mt Molloy, Qld 4871, Australia.
F PO Box 1485, Atherton, Qld 4883, Australia.
Australian Mammalogy 45(2) 220-236 https://doi.org/10.1071/AM22022
Submitted: 30 June 2022 Accepted: 15 November 2022 Published: 11 January 2023
© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of the Australian Mammal Society. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)
Abstract
The Wet Tropics (WT) population of the yellow-bellied glider Petaurus australis Shaw, 1791 in North Queensland is listed as Endangered at the state and national level, but its taxonomic classification is currently uncertain. Here we expand on previous genetic and morphological analyses of the WT population with additional samples and genetic loci to re-assess its subspecific status. Phylogenetic analyses of the mitochondrial NADH dehydrogenase subunit 4 (ND4) gene showed that the WT population formed a reciprocally monophyletic group relative to a group comprising P. australis from its remaining distribution in Australia. The genetic distinction of the WT population was further corroborated by analyses of the nuclear gene von Willebrand factor. Molecular clock analyses of combined ND2–ND4 data suggested that the WT population has been isolated from neighbouring populations in southern Queensland over multiple ice age cycles. Morphological analyses show that the WT gliders are smaller, with proportionally shortened faces, and have paler bellies compared to southern yellow-bellied gliders. We, therefore, propose that the WT population be recognised as a distinct subspecies which we herein describe. This taxonomic reassessment of P. australis has important implications for the ongoing conservation management of the WT population and yellow-bellied gliders throughout Australia.
Keywords: aspidonym, Endangered species, Evolutionarily Significant Unit, marsupial, phylogenetics, subspecies, systematics, taxonomy.
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