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A most enigmatic mouse: additional information on collection of blue-grey mouse (Pseudomys glaucus Thomas 1910) from New South Wales in 1956

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AUSTRALIAN MAMMALOGY
卷 44, 期 3, 页码 371-379

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CSIRO PUBLISHING
DOI: 10.1071/AM21035

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Australia; extinct; mammal; murid; rediscovery; rodent; taxonomic impediment; threatened species

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Australia has experienced a higher number of modern mammal extinctions compared to any other country. The study investigates the circumstances surrounding the collection of three specimens of the blue-grey mouse, providing insights into their optimal habitats and climatic conditions. Although the species is likely already extinct, the findings aid in directing future survey efforts.
Australia has suffered more modern mammal extinctions than any nation. Among the list of extinct species is the blue-grey mouse (Pseudomys glaucus), a rodent known from just three specimens (two from southern Queensland and one from northern New South Wales). We investigated circumstances of collection for the three specimens referred to this species to better illuminate optimal habitats and climatic conditions for continuing rediscovery efforts. No additional information could be found on two specimens from southern Queensland sent to the Natural History Museum, London. However, we recorded a first-hand account of how the northern New South Wales specimen was collected and have established that the collection year was 1956. We also obtained a copy of correspondence from Ellis Le G. Troughton thanking the collector for the contribution. The northern New South Wales specimen was from a pastoral property formerly dominated by woodland vegetation communities on alluvial soils. It was captured during a mouse plague following consecutive seasons of above average rainfall. Pseudomys glaucus is likely already extinct, but our results help better direct any future survey efforts. Surveys should be targeted in woodland communities on alluvial floodplains in the Darling Riverine Plains bioregion, following periods of above average rainfall conducive to the irruption of rodent populations.

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