| Australian swamp rat Temporal range: Holocene to present | |
|---|---|
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Muridae |
| Genus: | Rattus |
| Species: | R. lutreolus |
| Binomial name | |
| Rattus lutreolus (Gray, 1841) | |
The Australian swamp rat (Rattus lutreolus), also known as the eastern swamp rat, [2] is a species of rat native to the coasts of southern and eastern Australia.
The Australian swamp rat grows to have a body length of approximately 160 millimetres (6 in) with a tail length of approximately 110 mm (4.3 in) and a mass of about 120 grams (4 oz). It has a stocky build with black-brown fur and black feet. [3] Its ventral surface is cream to brown color and it has small ears nearly concealed by hair. The tail is dark grey, scaly and sparsely haired. [4]
The swamp rat is found near the coast of south and eastern Australia. It occurs in lowland country from Fraser Island down the coast of New South Wales and Victoria to the Mount Lofty Ranges in South Australia. A subspecies velutinus can be found in Tasmania, and another subspecies lacus lives in isolated patches of high altitude rainforest near Atherton, Queensland.
The preferred habitat of the swamp rat is thick vegetation along watercourses and in swamps. The dense vegetation of islands above the high water mark is also suitable. [3] They can also live in areas of coastal heath, dune scrub, grasslands and sedgelands. The rats will form tunnels through the vegetation through which they can move. The species tends to choose the habitat based on density of vegetation in the area. [5] Areas prone to fire tend not to be recolonised. [6] The swamp rat can be seen at places like the Healesville Sanctuary, where they live in the grounds.
The diet is vegetarian; [6] consisting of reeds, seeds, and swamp grass stems. [3] During the summer months, the species will increase its intake of insects as well as fungi; however, during spring months the rats switch to eating an increased amount of seeds due to their abundance and possible nutritional value in breeding season. [7]
Behaviour is partly nocturnal and diurnal so it is active during the day and at night. It is thought that the species does not collect the sufficient amount of food throughout the night and must also collect vegetation during the day. [8]
The rats reach sexual maturity around August and start to breed come October. [8] The species has a litter size ranging from one to eleven on average with a gestation period lasting around 23 to 25 days. [7] Olfactory senses are used to smell certain species' odours, allowing them to detect predators. [9]
The black rat, also known as the roof rat, ship rat, or house rat, is a common long-tailed rodent of the stereotypical rat genus Rattus, in the subfamily Murinae. It likely originated in the Indian subcontinent, but is now found worldwide.
The brown rat, also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread species of common rat. One of the largest muroids, it is a brown or grey rodent with a head and body length of up to 28 cm (11 in) long, and a tail slightly shorter than that. It weighs between 140 and 500 g. Thought to have originated in northern China and neighbouring areas, this rodent has now spread to all continents except Antarctica, and is the dominant rat in Europe and much of North America. With rare exceptions, the brown rat lives wherever humans live, particularly in urban areas.
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The rakali, also known as the rabe, the "Australian Otter" or water-rat, is an Australian native rodent first scientifically described in 1804. Adoption of the Aboriginal name rakali is intended to foster a positive public attitude by Environment Australia.
The long-tailed mouse is a native Australian mammal in the Order Rodentia and the Family Muridae. It is found only on the island of Tasmania. The long-tailed mouse is an omnivore that feeds on insects and a range of plants. It is found in forested areas, particularly in sub-alpine scree, and may live in burrows.
Beecroft Peninsula is the northern headland of Jervis Bay, on Australia's east coast. On the western and southern sides of the peninsula steep sandstone cliffs rise out of the ocean, up to 91 metres at its southernmost point, Point Perpendicular. White sandy beaches are found along the northern, eastern and southern sides interspersed with numerous intertidal reefs.
The hispid cotton rat is a rodent species long thought to occur in parts of South America, Central America, and southern North America. However, recent taxonomic revisions, based on mitochondrial DNA sequence data, have split this widely distributed species into three separate species. The distribution of S. hispidus ranges from Arizona in the west to Virginia to the east and from the Platte River in Nebraska in the north to, likely, the Rio Grande in the south, where it meets the northern edge of the distribution of S. toltecus. Adult size is total length 202–340 mm (8.0–13.4 in); tail 87–122 mm (3.4–4.8 in), frequently broken or stubbed; hind foot 29–35 mm (1.1–1.4 in); ear 16–20 mm (0.63–0.79 in); mass 50–250 g (1.8–8.8 oz). They have been used as laboratory animals.
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The heath mouse is a species of mouse in the subfamily Murinae, the Old World rats and mice, found in Australia.
The plains rat(Pseudomys australis), also known as the palyoora, plains mouse and eastern mouse, is a conilurine rodent native to arid and semi-arid Australia. Referred to as the pallyoora or yarlie by Indigenous groups, the plains rat was once widely distributed across central Australia, including north-west New South Wales and south-west Queensland; however, habitat degradation due to grazing, introduced predators and drought have contributed to its decline. Consequently, the plains rat has been listed as 'presumed extinct' in New South Wales and Victoria, 'endangered' in the Northern Territory and Queensland and 'vulnerable' in Western Australia and South Australia. While recent research has indicated the presence of the plains rat in areas such as the Fowlers Gap and Strzelecki Desert regions of New South Wales and within the Diamantina National Park in Queensland, there are only five sub-populations currently recognised nationally, none of which coincide with recent discoveries of the plains rat. As the current population trend of the plains rat has been listed as 'declining' by the International Union for the Conservation of Nature (IUCN), the IUCN conservation status for the species is 'vulnerable'.
The pale field rat is a small rat endemic to Australia. It is a nocturnal and herbivorous rodent that resides throughout the day in shallow burrows made in loose sand. Once widespread, its range has become greatly reduced and it is restricted to the grasslands, sedges, and cane-fields at the north and east of the continent. Its fur is an attractive yellow-brown colour, with grey or cream at the underside. This medium-sized rat has a tail shorter than its body.
The dusky-footed woodrat is a species of nocturnal rodent in the family Cricetidae. They are commonly called "packrats" or "trade rats" and build large, domed dens that can reach several feet in height. Coyotes and other predators will attempt to prey on these rodents by laying waste to the dens, but the sheer volume of material is usually dissuasive. Occasionally, dusky-footed woodrats will build satellite dens in trees. Although these animals are solitary, except in the mating season, dens are frequently found in clusters of up to several dozen, forming rough "communities". The mating system in this species appears to be variable, with promiscuity most generally at high population densities and monogamy at lower densities.
The Southern African vlei rat is a species of rodent in the vlei rat genus, Otomys, of the family Muridae in the order Rodentia. This is the type species of the genus. It is native to the grasslands and swamps of southern Africa where it is a common species.
The New Holland mouse also known as a Pookila is a species of rodent in the family Muridae. It was first described by George Waterhouse in 1843. It vanished from view for over a century before its rediscovery in Ku-ring-gai Chase National Park north of Sydney in 1967. It is found only in south east Australia, within the states of New South Wales, Queensland, Victoria, and Tasmania.
The long-haired rat, is a species of rodent in the family Muridae which is native to Australia. The long-haired rat is well known for its population irruptions over vast areas of Australia which is the basis of its alternative common name, the plague rat. Most of the research on the long-haired rat has been conducted during times of massive population fluctuations and therefore little is known about their biology in a non-eruptive period.
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