Bettong

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Bettongs [1]
Bettongia gaimardi.jpg
Eastern bettong
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Family: Potoroidae
Subfamily: Potoroinae
Genus: Bettongia
J. E. Gray, 1837
Type species
Bettongia setosa
J. E. Gray, 1837
Species

Bettongs, species of the genus Bettongia, are potoroine marsupials once common in Australia. They are important ecosystem engineers displaced during the colonisation of the continent, and are vulnerable to threatening factors such as altered fire regimes, land clearing, pastoralism and introduced predatory species such as the fox and cat.

Contents

Conservation status

All species of the genus have been severely affected by ecological changes since the European settlement of Australia. Those that have not become extinct became largely confined to islands and protected reserves and are dependent on re-population programs. The diversity of the genus was poorly understood before their extirpation from the mainland, and new taxa have been identified in specimens newly discovered and already held in museum collections. [2] In 2021 August, 40 bettongs were released in different parts of South Australia after being raised in captivity to increase their numbers. [3]

Taxonomy

Four extant species are recognised in the work Mammal Species of the World (2005): [1]

In addition, at least three extinct species are known:

The phylogeny of the genus has seen a grouping of 'brush-tailed' taxa allied within the genus Bettongia, and this includes the extant species Bettongia gaimardi , B. tropica and B. penicillata . [2]

A conservative arrangement of modern and fossil taxa of Bettongia may be summarised as [6]


The species Aepyprymnus rufescens is referred to as the rufous bettong, [7] despite not being a member of the genus Bettongia.

See also

Related Research Articles

<span class="mw-page-title-main">Broad-faced potoroo</span> Extinct species of marsupial

The broad-faced potoroo is an extinct potoroid marsupial that was found in southwestern Australia. The first specimen was collected in 1839, and described by John Gould in 1844. Only a small number of specimens have been collected since. The last live capture was in 1875. Subfossil remains indicate that it had an extensive distribution around the semiarid coastal districts of Southwest Australia.

<span class="mw-page-title-main">Potoroidae</span> Family of marsupials

Potoroidae is a family of marsupials, small Australian animals known as bettongs, potoroos, and rat-kangaroos. All are rabbit-sized, brown, jumping marsupials and resemble a large rodent or a very small wallaby.

<span class="mw-page-title-main">Australidelphia</span> Superorder of marsupials

Australidelphia is the superorder that contains roughly three-quarters of all marsupials, including all those native to Australasia and a single species — the monito del monte — from South America. All other American marsupials are members of the Ameridelphia. Analysis of retrotransposon insertion sites in the nuclear DNA of a variety of marsupials has shown that the South American monito del monte's lineage is the most basal of the superorder.

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

The woylie or brush-tailed bettong is a small, critically endangered mammal native to forests and shrubland of Australia. A member of the rat-kangaroo family (Potoroidae), it moves by hopping and is active at night, digging for fungi to eat. It is also a marsupial and carries its young in a pouch. Once widespread, the woylie mostly died out from habitat loss and introduced predators such as foxes. It is currently restricted to two small areas in Western Australia. There were two subspecies: B. p. ogilbyi in the west, and the now-extinct B. p. penicillata in the southeast.

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

The eastern bettong, also known as the southern or Tasmanian bettong, is a small, hopping, rat-like mammal native to grassy forests of southeastern Australia and Tasmania. A member of the rat-kangaroo family (Potoroidae), it is active at night and feeds on fungi and plant roots. Like most marsupials, it carries its young in a pouch. The eastern bettong is under pressure by introduced predators and habitat loss. The subspecies on mainland Australia is extinct, but populations of the Tasmanian subspecies have been reintroduced there.

<span class="mw-page-title-main">Musky rat-kangaroo</span> Species of marsupial

The musky rat-kangaroo is a small marsupial found only in the rainforests of northeastern Australia. First described in the later 19th century, the only other species are known from fossil specimens. They are similar in appearance to potoroos and bettongs, but are not as closely related. Their omnivorous diet is known to include materials such as fruit and fungi, as well as small animals such as insects and other invertebrates.

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

The northern bettong is a small, endangered, gerbil-like mammal native to forests in northeast Australia. A member of the rat-kangaroo family (Potoroidae), it moves by hopping and lives in burrows, feeding at night on roots and fungi. It is also a marsupial and carries its young in a pouch. The northern bettong is threatened by habitat loss, and is now restricted to a few small areas.

<i>Palorchestes</i> Extinct genus of marsupial

Palorchestes is an extinct genus of large terrestrial, herbivorous Australian marsupial of the family Palorchestidae, living from the Miocene through to the Late Pleistocene. Like other palorchestids, it had highly retracted nasal region suggesting that it had a prehensile lip, as well as highly unusual clawed forelimbs that were used to grasp vegetation.

<span class="mw-page-title-main">Potoroo</span> Genus of marsupials

Potoroo is a common name for species of Potorous, a genus of smaller marsupials. They are allied to the Macropodiformes, the suborder of kangaroo, wallaby, and other rat-kangaroo genera. All three extant species are threatened by ecological changes since the colonisation of Australia, especially the long-footed potoroo Potorous longipes (endangered) and P. gilbertii. The broad-faced potoroo P. platyops disappeared after its first description in the 19th century. The main threats are predation by introduced species and habitat loss.

<i>Ekaltadeta</i> Extinct genus of marsupials

Ekaltadeta is an extinct genus of marsupials related to the modern musky rat-kangaroos. Ekaltadeta was present in what is today the Riversleigh formations in Northern Queensland from the Late Oligocene to the Miocene, and the genus includes three species. The genus is hypothesized to have been either exclusively carnivorous, or omnivorous with a fondness for meat, based on the chewing teeth found in fossils. This conclusion is based mainly on the size and shape of a large buzz-saw-shaped cheek-tooth, the adult third premolar, which is common to all Ekaltadeta.

<span class="mw-page-title-main">Macropodiformes</span> Suborder of marsupials

The Macropodiformes, also known as macropods, are one of the three suborders of the large marsupial order Diprotodontia. They may in fact be nested within one of the suborders, Phalangeriformes. Kangaroos, wallabies and allies, bettongs, potoroos and rat kangaroos are all members of this suborder.

<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">Rufous rat-kangaroo</span> Species of marsupial

The rufous rat-kangaroo or rufous bettong is a small, jumping, rat-like marsupial native to eastern Australia. It is the only species in the genus Aepyprymnus. The largest member of the potoroo/bettong family (Potoroidae), it is about the size of a rabbit. The rufous rat-kangaroo is active at night when it digs for plant roots and fungi, and like other marsupials it carries its young in a pouch. Though its range is reduced, the population is healthy and stable.

The Nullarbor dwarf bettong, Bettongia pusilla, was a potoroine marsupial that occurred in Australia. The animal is only known from skeletons found in caves of the Nullarbor Plain and is now classified as recently extinct.

The Macropodidae are an extant family of marsupial with the distinction of the ability to move bipedally on the hind legs, sometimes by jumping, as well as quadrupedally. They are herbivores, but some fossil genera like Ekaltadeta are hypothesised to have been carnivores. The taxonomic affiliations within the family and with other groups of marsupials is still in flux. Macropodids are considered to be the most diverse group of marsupial herbivores ever to have evolved, and have been the subject of more phylogenetic studies than any other marsupial family.

Bettongia anhydra, also known as desert bettong, is a recently extinct species of potoroine marsupial.

References

  1. 1 2 Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. pp. 57–58. ISBN   0-801-88221-4. OCLC   62265494.
  2. 1 2 3 Prideaux, G.J.; Baynes, A.; Bunce, M.; Aplin, K.P.; Haouchar, D.; McDowell, M.C. (25 April 2015). "Morphological and molecular evidence supports specific recognition of the recently extinct Bettongia anhydra (Marsupialia: Macropodidae)". Journal of Mammalogy. 96 (2): 287–296. doi: 10.1093/jmammal/gyv006 . hdl: 20.500.11937/10145 . ISSN   0022-2372.
  3. "Endangered bettongs return to SA after more than a century".
  4. Wakefield, N.A. (1967). "Some taxonomie revision in the Australian marsupial genus Bettongia (Macropodidae), with description of a new species". The Victorian Naturalist. 84: 8–22.
  5. Flannery, T.F. and Archer, M, 1987. Bettongia moyesi, a new and plesiomorphic kangaroo (Marsupialia: Potoridae) from Miocene sediments of northwestern Queensland. ‘Possums and Opossums: Studies in Evolution’, Pp.759–67. ed. M. Archer. Surrey Beatty & Sons and the Royal Zoological Society of New South Wales, Sydney pdf
  6. Claridge, A.W.; Seebeck, J.H.; Rose, R. (2007). Bettongs, potoroos, and the musky rat-kangaroo. Collingwood, Victoria: CSIRO Pub. p. 25. ISBN   9780643093416.
  7. Menkhorst, P.W.; Knight, F. (2011). A field guide to the mammals of Australia (3rd ed.). Melbourne: Oxford University Press. p. 106. ISBN   9780195573954.