Crack Bandicoot
Barb Magario
The bandicoot is a member of the order Peramelemorphia, and the word "bandicoot" is often used informally to refer to any peramelemorph, such as the bilby.[2] The term originally referred to the unrelated Indian bandicoot rat from the Telugu word pandikokku (పదికొక్క) wherein pandi means pig and kokku means rat.[3]
Bandicoots have V-shaped faces, ending with their prominent noses similar to proboscis. These noses make them, along with bilbies, similar in appearance to elephant shrews and extinct leptictids, and they are distantly related to both mammal groups. With their well-attuned snouts and sharp claws, bandicoot are fossorial diggers. They have small but fine teeth that allow them to easily chew their food.[4]
The embryos of bandicoots have a chorioallantoic placenta that connects them to the uterine wall, in addition to the choriovitelline placenta that is common to all marsupials.[6] However, the chorioallantoic placenta is small compared to those of the Placentalia, and lacks chorionic villi.
Bandicoots also have low body temperatures and low basal metabolic rates which aides their survival in hot and dry climates. They also have low total water evaporative rate and effective panting mechanisms which further aide their survival in hotter temperatures. [7]
Bandicoots have different names by the indigenous peoples of the Australia-New Guinea region. For example, the Kaurna people refer to the southern brown bandicoot as the bung or the marti.[25][26]
The Long-nosed Bandicoot has bristly grey-brown fur, a white underbelly and pointed ears, weighs around 1.5kg and is 30cm to 43cm long. The Northern Brown Bandicoot has brown fur, a short tail, rounded ears and a slightly larger body (up to 2.1 kg and 47cm long). Bandicoots live between two to four years.
Both species can live in a variety of habitats, from heaths and woodlands to rainforests. They prefer habitats with dense vegetation to shelter during the day, and open areas to forage for food at night.
They're also critical in dispersing fungi spores, so losing bandicoots (and bettongs ) from ecosystems has cascading effects on plant diversity, species composition and structure of forests and woodlands.
The main threats to bandicoots are habitat loss from urbanisation and land-clearing, predation from foxes, cats and dogs, and collisions with vehicles. Native predators include snakes, owls, quolls and dingoes. Intense wildfires, or too frequent burning, also has negative impacts, destroying the shelter used to hide from predators.
Two-thirds of the nine species of bandicoot present in Australia at the time of European settlement are now considered extinct (two species) or threatened with extinction (four species). Bush Heritage has bought four properties that now provide a permanent refuge for bandicoots.
The Long-nosed Bandicoot is found on three of our reserves: Brogo (NSW), Fan Palm and Yourka (Queensland). The Northern Brown Bandicoot is found at Fan Palm, Yourka and Carnarvon Station reserves (all in Queensland).
Our Midlands Conservation Partnership with farmers in Tasmania is also helping preserve important habitat for the Eastern Barred Bandicoot and our work the the Wunambal Gaambera Aboriginal Corporation helps protect country for the Golden Bandicoot in the north of Western Australia.
Bandicoots are found throughout Australia and can be common in coastal areas of New South Wales. They can live in a wide variety of habitats, from rainforests to wet and dry woodlands to heath. During the day they nest in shallow holes in the ground, lined with leaf litter and built under dense vegetation or debris, hiding them from predators and protecting them from rain and sun.
The long-nosed bandicoot is common and widespread throughout New South Wales, particularly in coastal areas and on either side of the Great Dividing Range. This species is the most common species of bandicoot in the Sydney area and is known to visit suburban backyards.
There are 2 main populations. One lives in Garigal and Ku-ring-gai Chase national parks in northern Sydney. The other lives around Ben Boyd National Park and Nadgee Nature Reserve in the far south-eastern corner of the state. They are smaller and shyer than other species and do not stray far from their preferred shelter of dense heath vegetation.
Bandicoots generally live for 2 to 4 years in the wild. They are territorial and usually solitary. The female stays in a relatively small area to forage and mate, but males have a bigger territory and mark and defend their territory by fighting off other males. They do this by standing on their back legs and clawing at each other's shoulders and backs, often leaving scars.
Their gestation period is very short, about 11 days, the shortest of any marsupial. The young are born very tiny and underdeveloped. They travel through a cord attached to their mother's womb to reach the pouch. Here, they drink milk from the mother's teats and grow until they are large enough to leave the pouch. At about 3 months they can begin to live independently.
Bandicoots, like many of the small- to medium-sized marsupials of Australia, have undergone several species extinctions and significant contractions in distribution since European settlement because of land clearing and the introduction of predators (foxes, dogs and cats). Of the estimated 12 species of bandicoot in Australia, approximately half are now extinct, threatened with extinction or extremely rare.
The relationship between native animals and fire (wildfires and planned hazard reduction burns) is complex and, like all native animals, bandicoots have evolved with fire as a natural part of their environment. Habitat requirements are considered when planning hazard reduction burns, and predator control can be important after fire when bandicoots have less shelter to hide in.
Housing, roads and other forms of urban development have displaced and severely fragmented bandicoot populations, making them vulnerable to the threats of predators and motor vehicles. Road signs displaying a bandicoot pictograph can be seen where roads intersect important bandicoot habitat. The signs alert motorists to drive with care, especially at night when bandicoots are active.
Very few native animals prey on bandicoots. Owls, quolls and dingoes are their only significant natural predators. However, introduced animals such as feral and domestic cats, dogs and foxes pose a significant threat to the future of bandicoots. The NSW National Parks and Wildlife Service (NPWS) manages the threat of introduced foxes to native animals by undertaking control programs specifically aimed at protecting threatened species and endangered populations. Read more about the NSW Fox Threat Abatement Plan.
The long-term viability of the endangered southern brown bandicoot in the wild is made more tenuous by its patchy distribution and there is potential for localised population extinction of this species.
Foxes remain an active threat to the endangered population of long-nosed bandicoots at North Head. NPWS runs a continuous baiting program in Sydney Harbour National Park to control foxes and better protect the endangered population of long-nosed bandicoots. Further emergency baiting and other predator control activities are implemented as soon as fox presence on the headland is detected. A mortality register of bandicoots killed by foxes or on roads in Manly is also maintained. Members of the community are asked to report any fox sightings and any dead bandicoots in the Manly area, particularly at North Head, to the Harbour North Area (Parks and Wildlife Group) by phoning 02 9960 6266.
NPWS closely monitors the southern brown bandicoot to measure its response to fox control and other management actions. All sightings of southern brown bandicoots should be reported to NPWS, noting the location, date, what the bandicoot was doing and any other information which may help. Even dead southern brown bandicoots should be reported and where possible specimens submitted to a museum; bone, hair and DNA samples can all be used by researchers to help inform us about this species. (Remember they can be distinguished from the common species by their small round ears.)
Volunteers are invited to assist NPWS staff with bandicoot monitoring surveys in Garigal and Ku-ring-gai Chase national parks. Email NPWS.Metr...@environment.nsw.gov.au to join the volunteer program. This species is so rare that only a few are found each year and there are none in zoos in New South Wales. Seeing or catching one is a unique experience.
A wide range of native and introduced animals are hosts for the paralysis tick, which can also afflict humans. Highly mobile animals such as foxes, dogs and domestic and feral cats are particularly susceptible to picking up ticks as they wander long distances through bushland areas and backyards. Ticks increase in response to weather and climatic conditions and where fire has been absent from an ecosystem for a long time.
Bandicoots act as hosts for ticks; their hind feet have a syndactylous (joined) toe, like a comb, evolved for effective grooming and tick removal. However, because they tend to roam over a comparatively small range, often staying within half a hectare of their nests, they don't spread ticks as far as many other animals. Although some people associate bandicoots with ticks, this may be because humans tend to pick up ticks most easily in long grass or thick scrub, which happens to be the type of habitat favoured by bandicoots.
Salmonella Java can be caused by accidentally ingesting material containing the bacterium. Long-nosed bandicoot droppings taken from the area at this time tested positive for the bacterium, which is known to transfer from animals to humans.
Experts believe it may be a complicated transfer path and it is still unclear where bandicoots are in the cycle, which is why NSW Health, Taronga Zoo and NPWS are working together to find out more about how the salmonella is being transferred.
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