Eastern barred bandicoot

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Eastern barred bandicoot
Perameles gunni.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Peramelemorphia
Family: Peramelidae
Genus: Perameles
Species:
P. gunnii
Binomial name
Perameles gunnii
J. E. Gray, 1838
Eastern Barred Bandicoot area.png
Eastern barred bandicoot range
(green — native, pink — reintroduced as native population is extinct)

The eastern barred bandicoot (Perameles gunnii) is a nocturnal, rabbit-sized marsupial endemic to southeastern Australia, being native to the island of Tasmania and mainland Victoria. It is one of three surviving bandicoot species in the genus Perameles . It is distinguishable from its partially-sympatric congener – the long-nosed bandicoot – via three or four dark horizontal bars found on its rump. [2] In Tasmania, it is relatively abundant. The mainland population in Victoria is struggling and is subject to ongoing conservation endeavors.

Contents

Description

The eastern barred bandicoot [3] weighs less than 2 kg (4.4 lb) and has a short tail and three to four whitish bars across the rump. [2] The eastern barred bandicoot has two separated populations, one on the mainland of Australia and one on the island of Tasmania. The Tasmanian form is somewhat larger than the mainland form as the average adult mass is 750 g in Victoria and 1,000 g in Tasmania. [4] It lives for just two to three years and is not gregarious. [2] Males occupy large home ranges compared to females and only consort with females for mating.

This species is nocturnal. It emerges from its nest at dusk to forage for a variety of invertebrates including crickets, beetles and earthworms. During the day it rests in a grass-lined nest. When foraging, it uses its long nose to probe deep into the soil and then digs eagerly when it locates food. Females have 8 nipples and can produce a maximum of 5 young in one litter with an average of 2 to 3 young. Gestation lasts just 12 days — this is one of the shortest gestation periods of any mammal. Young are weaned at 55 days and emerged juveniles remain dependent upon the mother and forage with her until day 86. Given ideal conditions, females can have up to five litters per year although reproduction becomes depressed in summer and ceases altogether in times of drought. [2]

Distribution and conservation status

The eastern barred bandicoot was once distributed across the basalt plains of southwest Victoria, and in Tasmania. [2] Due to predation by introduced foxes and cats, along with land-clearing for farming practices, the Victorian subspecies is critically endangered. Since 1989, eight reintroduction sites have been established across the bandicoot's former range. The conservation of eastern barred bandicoots in Victoria now depends upon the success of captive breeding and reintroduction programs. Keys to this conservation plan include maintaining an insurance population in captivity, conducting research to improve breeding and reintroduction success and increasing community awareness and support for this rare marsupial. [5]

A management plan, developed in 1987 and revised in 1989, recommended the first reintroduction of the eastern barred bandicoot in Victoria at Woodlands Historic Park, 20 km (12 mi) northwest of Melbourne. Animals were translocated from the last remaining free-ranging mainland population in Hamilton, western Victoria to captive breeding facilities at Woodlands to establish a population in 1988. The captive-bred offspring formed the basis for reintroductions into the Nature Reserve, known as the Back Paddock, a 400-ha section of the park with a predator-resistant fence to keep out feral predators. [6]

Populations at four sites are now extinct (Floating Islands Nature Reserve, Lanark, Cobra Killuc Wildlife Reserve and Lake Goldsmith Nature Reserve), functionally extinct at Woodlands Historic park, declining at Mooramong and increasing at Hamilton Community Parklands and Mount Rothwell. The last remaining wild population, which was once found along the Grange Burn (a creek) in Hamilton, has also been declared extinct. The estimated population size for the Victorian eastern barred bandicoot in 2008 was 150 individuals. [2]

Eastern barred bandicoots have been successfully released on Phillip Island, French Island and Churchill Island in Victoria's Westernport. [7] [8]

On 15 September 2021, Victoria's Environment Minister Lily D'Ambrosio announced that the conservation status of the Victorian species has changed from "extinct in the wild" to "endangered", as its population had jumped from 150 to 1,500 over the course of thirteen years. This was the first time in Australia's history that such a change in conservation status had been made. [9]

The Tasmanian subspecies (P. g. gunni) is vulnerable to extinction. [10] This species is more widespread than its mainland cousin because Tasmania provides large areas of suitable habitat and because the island lacks the bandicoot's main predator, the red fox. [11]

Recovery efforts

In the state of Victoria, a recovery team oversees actions aimed at conserving the Victorian subspecies. Representatives of government agencies, NGOs and private conservation groups collaborate to develop and implement actions to improve the species' outlook. Groups include Conservation Volunteers, Zoos Victoria, Parks Victoria, Mount Rothwell Biodiversity Interpretation Centre, University of Melbourne, Conservation Enterprises Unlimited, and the National Trust of Australia (Victoria).[ citation needed ]

An effective recovery tactic currently in use is the exclusion of invasive predators from populations of threatened eastern barred bandicoots through the extensive use of conservation fences. Non-native predator species that are fenced out from endangered populations include feral cats and red foxes. Another important feature of conservation fences are that they restrict the spread of infectious diseases among the few remaining animals. [12]

Phylogeny

Illustration from Mammals of Australia, 1863 Perameles gunnii - Gould.jpg
Illustration from Mammals of Australia, 1863

The eastern barred bandicoot is most closely related to the other species of bandicoot in its genus, of which only two species are still extant today. These surviving relatives are the western barred bandicoot ( Perameles bougainville ) and the long-nosed bandicoot ( Perameles nasuta ). It is also closely related to the desert bandicoot of the same genus, but this species has become extinct. There are about 20 other bandicoots in the same family, Peramelidae. They share similar features of long pointed snouts, and small ears. The bandicoots are closely related to the bilbies, which share the same order, Peramelemorphia. These are all from the infraclass Marsupialia, shared of course with other species such as koalas and kangaroos, which means they diverged from placental mammals about 100 million years ago.[ citation needed ]

The species is the basis for the popular videogame character Crash Bandicoot, [13] and was selected from a number of Tasmanian mammals by creators Andy Gavin and Jason Rubin for its appeal and relative obscurity. [14]

Related Research Articles

<i>Macrotis</i> Genus of mammals

Macrotis is a genus of desert-dwelling marsupial omnivores known as bilbies or rabbit-bandicoots; they are members of the order Peramelemorphia. At the time of European colonisation of Australia, there were two species. The lesser bilby became extinct in the 1950s; the greater bilby survives but remains endangered. It is currently listed as a vulnerable species. The greater bilby is on average 55 cm (22 in) long, excluding the tail, which is usually around 29 cm (11 in) long. Its fur is usually grey or white; it has a long, pointy nose and very long ears, hence the reference of its nickname to rabbits.

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

The greater bilby, or simply bilby, is a long-eared, rabbit-like mammal native to Australia. It lives in burrows and is active at night, feeding on insects, fruit, or fungi. The bilby is a marsupial and carries its young in a pouch. Threats include habitat loss, disease, and introduced predators such as foxes. Formerly widespread, bilbies are now restricted to arid parts of northwestern and central Australia.

<span class="mw-page-title-main">Peramelemorphia</span> Order of mammals

The order Peramelemorphia includes the bandicoots and bilbies. All members of the order are endemic to Australia-New Guinea and most have the characteristic bandicoot shape: a plump, arch-backed body with a long, delicately tapering snout, very large upright ears, relatively long, thin legs, and a thin tail. Their size varies from about 140 grams up to 4 kilograms, but most species are about one kilogram.

<span class="mw-page-title-main">Bandicoot</span> Marsupial endemic to the Australia–New Guinea region

Bandicoots are a group of more than 20 species of small to medium-sized, terrestrial, largely nocturnal marsupial omnivores in the order Peramelemorphia. They are endemic to the Australia–New Guinea region, including the Bismarck Archipelago to the east and Seram and Halmahera to the west.

<span class="mw-page-title-main">Desert bandicoot</span> Extinct species of marsupial

The desert bandicoot is an extinct bandicoot of the arid country in the centre of Australia.

<span class="mw-page-title-main">Threatened fauna of Australia</span> Animals at risk of becoming extinct

Threatened fauna of Australia are those species and subspecies of birds, fish, frogs, insects, mammals, molluscs, crustaceans, and reptiles to be found in Australia that are in danger of becoming extinct. This article lists species classified as threatened species under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999.

<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">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.

<i>Perameles</i> Genus of marsupials

Perameles is a genus of marsupials of the order Peramelemorphia. They are referred to as long-nosed bandicoots or barred bandicoots.

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

The marsupial family Peramelidae contains the extant bandicoots. They are found throughout Australia and New Guinea, with at least some species living in every available habitat, from rainforest to desert. Four fossil peramelids are described. One known extinct species of bandicoot, the pig-footed bandicoot, was so different from the other species, it was recently moved into its own family.

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

The southern brown bandicoot is a short-nosed bandicoot, a type of marsupial, found mostly in southern Australia. A subspecies in Western Australia was also known as the quenda in South Western Australia. This subspecies was elevated to species in 2018.

<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 barred bandicoot</span> Species of marsupial

The Western barred bandicoot, also known as the Shark Bay bandicoot or the Marl, is a small species of bandicoot; now extinct across most of its former range, the western barred bandicoot only survives on offshore islands and in fenced sanctuaries on the mainland.

<span class="mw-page-title-main">Long-nosed bandicoot</span> Species of mammal

The long-nosed bandicoot, a marsupial, is a species of bandicoot found in eastern Australia, from north Queensland along the east coast to Victoria. Around 40 centimetres (16 in) long, it is sandy- or grey-brown with a long snouty nose. Omnivorous, it forages for invertebrates, fungi and plants at night.

<span class="mw-page-title-main">Serendip Sanctuary</span>

Serendip Sanctuary is a 250 ha protected area in Victoria, Australia, near the You Yangs and the town of Lara, some 22 km (14 mi) north of Geelong and 60 km (37 mi) south-west of Melbourne. Originally used for farming and other purposes, it was purchased in 1959 by the State Government of Victoria for wildlife research and the captive management and breeding of species threatened in Victoria, such as the brolga, magpie goose, Australian bustard, and bush stone-curlew. The sanctuary contains many different types of wetland and is home to many plant species as well, such as river red gums, tall spikerush, and tussock grass. Serendip now focuses more on environmental education about the flora and fauna of the wetlands and open grassy woodlands of the Volcanic Western Plains of Victoria. It was opened to the public in 1991 and is now managed by Parks Victoria.

The Peter Murrell Conservation Area is located in Huntingfield, Tasmania, approximately 15 km (9.3 mi) south of the state's capital city, Hobart. The conservation area has an area of 135 ha and is one of three reserves within the Peter Murrell Reserves. Also within these reserves are the Peter Murrell State Reserve and a Public Reserve. These reserves and the Conservation Area lie at the base of the Tinderbox Peninsula, between the suburbs of Kingston, Howden and Blackman's Bay. The Peter Murrell Conservation Area surrounds the northern, western and southern sides of the Peter Murrell State Reserve.

Heirisson Prong is a community managed reserve established for the conservation of threatened mammals at Shark Bay in Western Australia. The reserve is at the point of a long narrow peninsula of the same name that juts into Shark Bay from the south.

<span class="mw-page-title-main">Tasmanian temperate forests</span> Ecoregion in Tasmania, Australia

The Tasmanian temperate forests is a temperate broadleaf and mixed forests ecoregion in Australia. The ecoregion occupies the eastern portion of the island of Tasmania, which lies south of the Australian mainland.

References

  1. Perkins, Miki (15 September 2021). "Bandicoots back from the brink as status downgraded to endangered". The Sydney Morning Herald. Retrieved 17 September 2021.
  2. 1 2 3 4 5 6 Winnard, A. L. & Coulson, G. (2008). "Sixteen years of Eastern Barred Bandicoot Perameles gunnii reintroductions in Victoria: a review". Pacific Conservation Biology. 14: 34. doi:10.1071/PC080034.
  3. Groves, C.P. (2005). "Order Peramelemorphia". 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. 40. ISBN   978-0-8018-8221-0. OCLC   62265494.
  4. Seebeck, John H. (2001). "Perameles gunnii". Mammalian Species. 654: 1–8. doi:10.1644/1545-1410(2001)654<0001:PG>2.0.CO;2. S2CID   198968513.
  5. Hill, R., Winnard, A. and Watson, M. (2010). National Recovery Plan for the Eastern Barred Bandicoot (mainland) Perameles gunnii unnamed subspecies. Department of Sustainability and Environment, Melbourne.
  6. Todd, Charles R.; Jenkins, Simone; Bearlin, Andrew R. (2002). "Lessons about extinction and translocation: models for eastern barred bandicoots (Perameles gunnii) at Woodlands Historic Park, Victoria, Australia". Biological Conservation. 106 (2): 211. Bibcode:2002BCons.106..211T. doi:10.1016/S0006-3207(01)00247-6.
  7. "Scores of near-extinct bandicoots released onto new island home". ABC News. 23 October 2019.
  8. "Eastern Barred Bandicoots - Phillip Island Nature Parks - Phillip Island Nature Parks". www.penguins.org.au.
  9. "Australian bandicoot brought back from brink of extinction". BBC News . BBC. 15 September 2021. Retrieved 18 September 2021.
  10. Australasian Marsupial & Monotreme Specialist Group (1996). "Perameles gunnii ssp. gunnii". IUCN Red List of Threatened Species . 1996. Retrieved 12 April 2007. Listed as Vulnerable (VU A1b v2.3)
  11. Mallick, Stephen A.; Driessen, Michael M. & Hocking, Gregory J. (1997). "Diggings as a population index for the eastern barred bandicoot". The Journal of Wildlife Management. 61 (4): 1378–1383. doi:10.2307/3802141. JSTOR   3802141.
  12. Bode, Michael; Wintle, Brendan (15 January 2010). "How to Build an Efficient Conservation Fence". Conservation Biology. 24 (1): 182–8. Bibcode:2010ConBi..24..182B. doi:10.1111/j.1523-1739.2009.01291.x. PMID   19604295. S2CID   28367562.
  13. "Crash Bandicoot - Twenty Questions". Naughty Dog. Archived from the original on 22 August 2008. Retrieved 2 February 2009. Crash is a Perameles gunnii, of the order POLYPROTODONTA, family Peramelidae, commonly known as the Eastern Barred Bandicoot.
  14. Gavin, Andy (3 February 2011). "Making Crash Bandicoot – part 2". All Things Andy Gavin. Archived from the original on 7 July 2017. Retrieved 7 February 2011.