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Pseudantechinus mimulus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Dasyuromorphia Dasyuridae

Scientific Name: Pseudantechinus mimulus
Species Authority: (Thomas, 1906)
Common Name(s):
English Carpentarian Antechinus, Carpentarian Pseudantechinus
French Souris Marsupiale Des Termitiéres
Taxonomic Source(s): Wilson, D.E. and Reeder, D.M. (eds). 2005. Mammal Species of the World: A Taxonomic and Geographical Reference. Third edition. John Hopkins University Press, Baltimore.
Taxonomic Notes: This species is treated as synonym of Pseudantechinus macdonnellensis (see Groves in Wilson and Reeder (1993), but recognised as a valid species by Kitchener (1991), and subsequently is generally accepted (e.g., Maxwell et al. 1996).

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2016
Date Assessed: 2014-03-08
Assessor(s): Woinarski, J. & Burbidge, A.A.
Reviewer(s): Hawkins, C.
Contributor(s): Dickman, C., Kanowski, J., Legge, S. & Ward, S.
Justification:
Pseudantechinus mimulus is assessed as Near Threatened because its extent of occurrence (26,000-27,000 km²) is not far above the criterion B1 threshold, its area of occupancy may be little more than 2,000 km² threshold for criterion B2, the number of locations for the species is probably fewer than 10, and there is ongoing decline in habitat quality (due to fire and invasive grasses) and possibly in population size.
Previously published Red List assessments:

Geographic Range [top]

Range Description:

This species is endemic to Australia. The Carpentarian Antechinus is restricted to sandstone formations on some islands (Vanderlin, North, Centre and South-west in the Sir Edward Pellew group) in the Gulf of Carpentaria (Woinarski et al. 2011), and on some ranges in the Gulf hinterland (near Mt Isa extending as far east as the Selwyn Ranges, and at Pungalina – Seven Emu) (Sanders and Slater 2004; Baker and Griffiths 2005; Kanowski et al. 2010, 2011; Woolley 2011; Moran and Kanowski 2012; Lloyd et al. 2013). The location of the original record from Alexandria Station in 1905 is considered unreliable or at least vague (Woinarski 2004, Johnson et al. 2008): a recent review considered it most likely that the actual location was the Mittiebah Range (Woolley 2011).

Countries occurrence:
Native:
Australia (Northern Territory, Queensland)
Additional data:
Estimated area of occupancy (AOO) - km2:72-10000,2500Continuing decline in area of occupancy (AOO):No
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:26291-26800
Continuing decline in extent of occurrence (EOO):NoExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:7-10Continuing decline in number of locations:No
Extreme fluctuations in the number of locations:No
Upper elevation limit (metres):500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The species is uncommonly recorded on the mainland, but is possibly more common on the Sir Edward Pellew islands (Johnson et al. 2008). Abundance is difficult to estimate because there has been limited sampling in its preferred habitat, and it is not readily captured in standard traps. Woinarski et al. (2011) provides some capture rate data, but this does not provide a useful index of population size.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:5000-30000, 20000Continuing decline of mature individuals:Yes
Extreme fluctuations:NoPopulation severely fragmented:Unknown
Continuing decline in subpopulations:No
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:The Carpentarian Antechinus is a nocturnal, generalist predator of invertebrates and small vertebrates. It occurs across a range of rugged rocky areas, mostly associated with sandstone, but some recent records have been in limestone formations (Lloyd et al. 2013). The limited relevant records suggest that breeding is seasonal, with young born in August and September (Woolley 2011). The species has been recorded from a range of vegetation types, but always at rocky sites (Johnson and Kerle 1991, Woolley 2011, Ward 2012).
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):1.5

Threats [top]

Major Threat(s): Major threats to the population are not known, however, it is thought that changes to the fire regime, destruction and degradation of habitat by introduced herbivores and livestock, predation by exotic predators, and possibly disease have all been factors in the decline of this species (Woinarski 2004). One of the two Queensland sites is within a proposed mining area. Cane toads and cats (both relatively recent introductions; last 2-3 decades) are present on all four islands from which the species is known, though the effects of these are not known (Woinarski 2004). On some mainland sites, the introduced buffel grass (Cenchrus ciliaris) is spreading rapidly and catalysing increased severity of fire.

Conservation Actions [top]

Conservation Actions: The Carpentarian Pseudantechinus is listed as a threatened species under Australian law. It is present in two protected areas (North Island, which is Barranyi National Park; and Pungalina - Seven Emus sanctuary). A recovery plan was developed for the 2004-2008 period (Woinarski 2004). Recommendations from this plan include: establishing a recovery team; communicating information about the species to stakeholders; targeting research in order to make informed decisions (e.g., towards total number and distribution, population trends, habitat suitability, and threatening processes); minimize the impacts of feral cats; and improve fire management.

Citation: Woinarski, J. & Burbidge, A.A. 2016. Pseudantechinus mimulus. The IUCN Red List of Threatened Species 2016: e.T18447A21945496. . Downloaded on 20 January 2017.
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