Dusky Antechinus
Encyclopedia
The Dusky Antechinus also known as Swainson's Antechinus or the Dusky Marsupial Mouse, is a species of small marsupial
carnivore
, a member of the family Dasyuridae
. It is found in Australia
.
George Robert Waterhouse
in 1840, the second antechinus
to be described. It was named in honour of the zoologist and artist
William Swainson. There are three subspecies:
and can be found in two forms: a dark form and a pale form. It can be distinguished from its relatives by its much darker fur, which is also apparent in the pale form. Unusually for an antechinus, it is entirely terrestrial
, and is active at many times of the day. It mostly eats invertebrate
s, although it will occasionally devour small lizard
s and skink
s. Like all antechinus
es, the Dusky Antechinus has a short and vigorous mating season (which occurs during winter), after which nearly all of the males die. However, compared to the other antechinus species whose male individuals are almost invariably semelparous and females usually so, iteroparity is more commonly seen in the present species (perhaps due to its comparatively large size). The Dusky Antechinus is also known for being unusually vocal for an antechinus, and has been observed hissing and chattering.
to southwestern Victoria
in Australia
, and is also found in Tasmania
. It is most common in mountain
ous regions, including Kosciuszko National Park
and the Brindabella Ranges
, where they are found in alpine heath
or tall open forest with a dense understorey. The species is not threatened, but local populations have been reduced by controlled burning and the instigation of pine
plantation
s in the place of native forests. The Cat
and the Red Fox
are also believed to be detrimental to local populations.
Marsupial
Marsupials are an infraclass of mammals, characterized by giving birth to relatively undeveloped young. Close to 70% of the 334 extant species occur in Australia, New Guinea, and nearby islands, with the remaining 100 found in the Americas, primarily in South America, but with thirteen in Central...
carnivore
Carnivore
A carnivore meaning 'meat eater' is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging...
, a member of the family Dasyuridae
Dasyuridae
Dasyuridae is a family of marsupials native to Australia and New Guinea, including 61 species divided into 15 genera. Many are small and mouse-like, giving them the misnomer marsupial mice, but the group also includes the cat-sized quolls, as well as the Tasmanian Devil...
. It is found in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
.
Taxonomy
The Dusky Antechinus was described by English naturalistNaturalist
Naturalist may refer to:* Practitioner of natural history* Conservationist* Advocate of naturalism * Naturalist , autobiography-See also:* The American Naturalist, periodical* Naturalism...
George Robert Waterhouse
George Robert Waterhouse
George Robert Waterhouse was an English naturalist.In 1833, Waterhouse was elected as the Royal Entomological Society of London's librarian and curator of insects and records....
in 1840, the second antechinus
Antechinus
Antechinus is a genus of dasyurid marsupial that is indigenous to Australia and New Guinea. The majority of Antechinus species occur in Australia and only two species have been described in New Guinea...
to be described. It was named in honour of the zoologist and artist
Artist
An artist is a person engaged in one or more of any of a broad spectrum of activities related to creating art, practicing the arts and/or demonstrating an art. The common usage in both everyday speech and academic discourse is a practitioner in the visual arts only...
William Swainson. There are three subspecies:
- A. s. swainsonii, found in TasmaniaTasmaniaTasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...
; - A. s. insulanus, found in the Grampians National ParkGrampians National ParkThe Grampians National Park is a national park in Victoria, Australia, 235 kilometres west of Melbourne. The Park was listed on the Australian National Heritage List on 15 December 2006 for its outstanding natural beauty and being one of the richest indigenous rock art sites in south-eastern...
, Victoria; - A. s. mimetes, found from south-eastern QueenslandQueenslandQueensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...
through eastern New South WalesNew South WalesNew South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...
to south-western Victoria.
Description
The Dusky Antechinus is the largest antechinusAntechinus
Antechinus is a genus of dasyurid marsupial that is indigenous to Australia and New Guinea. The majority of Antechinus species occur in Australia and only two species have been described in New Guinea...
and can be found in two forms: a dark form and a pale form. It can be distinguished from its relatives by its much darker fur, which is also apparent in the pale form. Unusually for an antechinus, it is entirely terrestrial
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...
, and is active at many times of the day. It mostly eats invertebrate
Invertebrate
An invertebrate is an animal without a backbone. The group includes 97% of all animal species – all animals except those in the chordate subphylum Vertebrata .Invertebrates form a paraphyletic group...
s, although it will occasionally devour small lizard
Lizard
Lizards are a widespread group of squamate reptiles, with nearly 3800 species, ranging across all continents except Antarctica as well as most oceanic island chains...
s and skink
Skink
Skinks are lizards belonging to the family Scincidae. Together with several other lizard families, including Lacertidae , they comprise the superfamily or infraorder Scincomorpha...
s. Like all antechinus
Antechinus
Antechinus is a genus of dasyurid marsupial that is indigenous to Australia and New Guinea. The majority of Antechinus species occur in Australia and only two species have been described in New Guinea...
es, the Dusky Antechinus has a short and vigorous mating season (which occurs during winter), after which nearly all of the males die. However, compared to the other antechinus species whose male individuals are almost invariably semelparous and females usually so, iteroparity is more commonly seen in the present species (perhaps due to its comparatively large size). The Dusky Antechinus is also known for being unusually vocal for an antechinus, and has been observed hissing and chattering.
Distribution and habitat
The Dusky Antechinus is found from southeastern QueenslandQueensland
Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...
to southwestern Victoria
Victoria (Australia)
Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....
in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
, and is also found in Tasmania
Tasmania
Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...
. It is most common in mountain
Mountain
Image:Himalaya_annotated.jpg|thumb|right|The Himalayan mountain range with Mount Everestrect 58 14 160 49 Chomo Lonzorect 200 28 335 52 Makalurect 378 24 566 45 Mount Everestrect 188 581 920 656 Tibetan Plateaurect 250 406 340 427 Rong River...
ous regions, including Kosciuszko National Park
Kosciuszko National Park
Kosciuszko National Park covers 690,000 hectares and contains mainland Australia's highest peak, Mount Kosciuszko for which it is named, and Cabramurra the highest town in Australia...
and the Brindabella Ranges
Brindabella Ranges
The Brindabella Range is a mountain range located on the border between New South Wales and the Australian Capital Territory, Australia. The ranges rise to the west of Canberra, the capital city of Australia, and include the Namadgi National Park in the A.C.T. and Bimberi Nature Reserve and...
, where they are found in alpine heath
Heath (habitat)
A heath or heathland is a dwarf-shrub habitat found on mainly low quality acidic soils, characterised by open, low growing woody vegetation, often dominated by plants of the Ericaceae. There are some clear differences between heath and moorland...
or tall open forest with a dense understorey. The species is not threatened, but local populations have been reduced by controlled burning and the instigation of pine
Pine
Pines are trees in the genus Pinus ,in the family Pinaceae. They make up the monotypic subfamily Pinoideae. There are about 115 species of pine, although different authorities accept between 105 and 125 species.-Etymology:...
plantation
Plantation
A plantation is a long artificially established forest, farm or estate, where crops are grown for sale, often in distant markets rather than for local on-site consumption...
s in the place of native forests. The Cat
Cat
The cat , also known as the domestic cat or housecat to distinguish it from other felids and felines, is a small, usually furry, domesticated, carnivorous mammal that is valued by humans for its companionship and for its ability to hunt vermin and household pests...
and the Red Fox
Red Fox
The red fox is the largest of the true foxes, as well as being the most geographically spread member of the Carnivora, being distributed across the entire northern hemisphere from the Arctic Circle to North Africa, Central America, and the steppes of Asia...
are also believed to be detrimental to local populations.