Tasmanian pademelon

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Tasmanian pademelon [1]
Thylogale billardierii.jpg
Mt Field National Park
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Family: Macropodidae
Genus: Thylogale
Species:
T. billardierii
Binomial name
Thylogale billardierii
(Desmarest, 1822)
Tasmanian Pademelon area.png
Tasmanian pademelon range

The Tasmanian pademelon (Thylogale billardierii), also known as the rufous-bellied pademelon or red-bellied pademelon, is the sole species of pademelon found in Tasmania, and was formerly found throughout southeastern Australia. This pademelon has developed heavier and bushier fur than its northern relatives, which inhabit northern Australia and Papua New Guinea.

Contents

The scientific name honours J.J.H. Labillardier, who collected the first specimen on an expedition to what was then Van Diemen's Land in 1792. [3] There are no recognised subspecies.

Description

The Tasmanian pademelon has a compact body with short, rounded, ears, thick fur over the limbs, head, and body and a tail covered with short hairs. It has greyish fur over most of the body with yellowish to rufous underparts, and, unlike most other pademelons, has no distinct facial or hip markings. [3] Males reach around 6.5 kilograms (14 lb) in weight, 70–120 centimetres (28–47 in) in length including the 30–45 centimetres (12–18 in) tail, and are considerably larger than the females, which average 4.6 kilograms (10 lb). [4] [5]

Distribution and habitat

Skull of a Tasmanian pademelon Thylogale billardierii 02 MWNH 351.JPG
Skull of a Tasmanian pademelon

Pademelons are abundant and widespread across mainland Tasmania, [6] and are also found on the nearby King and Furneaux Islands. This species was extirpated from the Australian mainland during the 19th century. [3] Rainforest, sclerophyll forest, and scrubland [7] are preferred, although wet gullies in dry open eucalyptus forest are also used. Such places, next to open areas where feeding can occur, are especially favoured.

Diet and ecology

The Tasmanian pademelon is a herbivore feeding on a wide variety of plants, from herbs, green shoots and grass, to some nectar-bearing flowers. [7]

Once a part of the diet of the thylacine, the Tasmanian pademelon is still preyed upon by other predators of the island, including Tasmanian devils, quolls, and eagles, [3] as well as dogs and feral cats. [8] Even so, they are abundant to the point of being culled occasionally (along with other wallabies) to reduce competition for grass with the farmed animals. Hunting of the Tasmanian pademelon is allowed, its pelt having some economic value and its meat being palatable.[ citation needed ]

Behaviour

Pademelons are solitary and nocturnal, spending the daylight hours in thick vegetation. After dusk, the animals move onto open areas to feed, [3] but rarely stray more than 100 metres from the forest edge.[ citation needed ] Adults have been recorded to make growling sounds during aggressive interactions, and clucking noises at other times, such as when mothers are calling to their young or males are pursuing females. They have also been reported to engage in grass-pulling behaviour, possibly as a visual signal to other members of the species. This involves standing upright, pulling up clumps of grass and throwing them against their chest. [9] Males engage in ritualised bouts of combat to determine dominance; these are similar to those of other macropodids, including the "boxing" behaviour seen in kangaroos. [3] Both sexes groom themselves by scratching their head and shoulders with their hind feet for up to ten minutes at a time, and mothers also groom their young for a brief time after they first emerge from the pouch. [9]

Reproduction

There is no specific breeding season, but most pademelon births seem to occur in the autumn. Males regularly sniff the females in their range, and pursue them if they are receptive, which they remain only for around 24 hours at a time. [10] Copulation can be lengthy, consisting of several bouts, with the animals resting for up to 15 minutes between each session. [3]

Gestation lasts 30 days.[ citation needed ] The young measure around 16 millimetres (0.63 in) in total length at birth, and rapidly move to the pouch, where they attach to one of the four teats. They grow relatively slowly compared with other marsupials of their size, opening their eyes between weeks 18 and 20, and first developing fur between weeks 20 and 22. They are fully furred by around 160 days, at which point they first begin to poke their head out of the pouch. The first full emergence from the pouch can occur from this time up until around 190 days of age, although they continue to suckle for another three months, after which the mother becomes aggressive towards them. [11] The mother often gives birth to a second joey while still nursing an older one that has already left the pouch, and typically gives birth to 1.3 young per year. [3]

Joeys are sexually mature at 17 months for males or 13 months for females. [5] Lifespan in the wild is unknown, [3] but has been estimated to be between 5 and 6 years. [12]

Related Research Articles

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Marsupials are any members of the mammalian infraclass Marsupialia. All extant marsupials are endemic to Australasia, Wallacea and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a pouch. Living marsupials include kangaroos, koalas, opossums, Tasmanian devils, wombats, wallabies, and bandicoots among others, while many extinct species, such as the thylacine, Thylacoleo, and Diprotodon, are also known.

<span class="mw-page-title-main">Sugar glider</span> Species of Australian marsupial

The sugar glider is a small, omnivorous, arboreal, and nocturnal gliding possum. The common name refers to its predilection for sugary foods such as sap and nectar and its ability to glide through the air, much like a flying squirrel. They have very similar habits and appearance to the flying squirrel, despite not being closely related—an example of convergent evolution. The scientific name, Petaurus breviceps, translates from Latin as "short-headed rope-dancer", a reference to their canopy acrobatics.

<span class="mw-page-title-main">Macropodidae</span> Family of marsupial mammals

Macropodidae is a family of marsupials that includes kangaroos, wallabies, tree-kangaroos, wallaroos, pademelons, quokkas, and several other groups. These genera are allied to the suborder Macropodiformes, containing other macropods, and are native to the Australian continent, New Guinea and nearby islands.

<span class="mw-page-title-main">Eastern grey kangaroo</span> Species of kangaroo

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<span class="mw-page-title-main">Red kangaroo</span> Species of mammal

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<span class="mw-page-title-main">Pademelon</span> Small terrestrial marsupial

Pademelons are small marsupials in the genus Thylogale, found in Australia and New Guinea. They are some of the smallest members of the macropod family, which includes the similar-looking but larger kangaroos and wallabies. Pademelons are distinguished by their small size and their short, thick, and sparsely-haired tails. Like most other marsupials, they carry their young in a pouch.

<span class="mw-page-title-main">Tiger quoll</span> Carnivorous marsupial native to Australia

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<span class="mw-page-title-main">Swamp wallaby</span> Species of mammal

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<span class="mw-page-title-main">Eastern quoll</span> Species of marsupial

The eastern quoll is a medium-sized carnivorous marsupial (dasyurid), and one of six extant species of quolls. Endemic to Australia, they occur on the island state of Tasmania, but were considered extinct on the mainland after 1963. The species has been reintroduced to fox-proof fenced sanctuaries Victoria in 2003 and to the Australian Capital Territory in 2016.

<span class="mw-page-title-main">Southern brown bandicoot</span> Species of marsupial

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<span class="mw-page-title-main">Eastern pygmy possum</span> Species of marsupial

The eastern pygmy possum is a diprotodont marsupial of south-eastern Australia. Occurring from southern Queensland to eastern South Australia and also Tasmania, it is found in a range of habitats, including rainforest, sclerophyll forest, woodland and heath.

<span class="mw-page-title-main">Boodie</span> Species of marsupial

The boodie, also known as the burrowing bettong or Lesueur's rat-kangaroo, is a small, furry, rat-like mammal native to Australia. Once common throughout the continent, it is now restricted to a few coastal islands. A member of the rat-kangaroo family (Potoroidae), it lives in burrows and is active at night when it forages for fungi, roots, and other plant matter. It is about the size of a rabbit and, like most marsupials, carries its young in a pouch.

<span class="mw-page-title-main">Western pygmy possum</span> Species of marsupial

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<span class="mw-page-title-main">Western brush wallaby</span> Species of marsupial

The western brush wallaby, also known as the black-gloved wallaby, is a species of wallaby found in the southwestern coastal region of Western Australia. The wallaby's main threat is predation by the introduced red fox. The IUCN lists the western brush wallaby as Least Concern, as it remains fairly widespread and the population is believed to be stable or increasing, as a result of red fox control programs.

<span class="mw-page-title-main">Common wallaroo</span> Species of marsupial

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<span class="mw-page-title-main">Red-legged pademelon</span> Species of marsupial

The red-legged pademelon is a species of small macropod found on the northeastern coast of Australia and in New Guinea. In Australia it has a scattered distribution from the tip of Cape York Peninsula in Queensland to around Tamworth in New South Wales. In New Guinea it is found in south central lowlands.

<span class="mw-page-title-main">Calaby's pademelon</span> Species of marsupial

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References

  1. Groves, C. P. (2005). "Order Diprotodontia". In Wilson, D. E.; Reeder, D. M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 69. ISBN   978-0-8018-8221-0. OCLC   62265494.
  2. Menkhorst, P.; Denny, M. (2016). "Thylogale billardierii". IUCN Red List of Threatened Species . 2016: e.T40571A21958627. doi: 10.2305/IUCN.UK.2016-2.RLTS.T40571A21958627.en . Retrieved 12 November 2021.
  3. 1 2 3 4 5 6 7 8 9 Rose, R.W.; Rose, R.K. (25 September 2018). "Thylogale billardierii (Diprotodontia: Macropodidae)". Mammalian Species. 50 (965): 100–108. doi: 10.1093/mspecies/sey012 .
  4. Davis, Adrienne. "Thylogale billardierii (Tasmanian pademelon)". Animal Diversity Web. Retrieved 2020-05-14.
  5. 1 2 Driessen, Michael M. (September 1992). Effects of hunting and rainfall on Bennett's wallaby and Tasmanian pademelon populations (PDF) (M.Sc. thesis). University of Tasmania. Retrieved 6 April 2021.
  6. Rounsevell, D.E.; Taylor, R.J.; Hocking, G.J. (1991). "Distribution records of native terrestrial mammals in Tasmania". Wildlife Research. 18 (6): 699–717. doi:10.1071/WR9910699.
  7. 1 2 Menkhorst, Peter (2001). A Field Guide to the Mammals of Australia. Oxford University Press. p. 134. ISBN   978-0-19-550870-3.
  8. Fancourt, B.A. (February 2015). "Making a killing: photographic evidence of predation of a Tasmanian pademelon (Thylogale billardierii) by a feral cat (Felis catus)". Australian Mammalogy. 37 (1): 120–124. doi:10.1071/AM14044.
  9. 1 2 Clancy, T.F. (December 1982). Aspects of the behaviour of the red-bellied pademelon Thylogale billardierii (Desmarest 1822) in captivity (PDF) (B.Sc. thesis). University of Tasmania. Retrieved 6 April 2021.
  10. Rose, R.W.; McCatney, D.J. (1982). "Reproduction of the red-bellied pademelon Thylogale billardierii (Marsupialia)". Australian Wildlife Research. 9 (1): 27–32. doi:10.1071/WR9820027.
  11. Rose, R.W.; McCatney, D.J. (1982). "Reproduction of the red-bellied pademelon Thylogale billardierii, and age estimation of pouch young". Australian Wildlife Research. 9 (1): 33–38. doi:10.1071/WR9820033.
  12. AustralianFauna.com Archived 2007-09-25 at the Wayback Machine article on the Tasmanian pademelon