Giant burrowing frog

Last updated

Giant burrowing frog
Giant Burrowing Frog 4375.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Limnodynastidae
Genus: Heleioporus
Species:
H. australiacus
Binomial name
Heleioporus australiacus
(Shaw & Nodder, 1795)
Heleioporus australiacus range.PNG
Range of the giant burrowing frog
Synonyms [2]
  • Rana australiaca Shaw and Nodder, 1795
  • Rana spinipes Schneider, 1799
  • Bufo spinipes Daudin, 1802
  • Philocryphus flavoguttatus Fletcher, 1894
  • Heleioporus flavoguttatus (Fletcher, 1894)
  • Philocryphus australiacus (Shaw and Nodder, 1795)

The giant burrowing frog [2] [3] or eastern owl frog [1] (Heleioporus australiacus) is a large frog species that occurs in coastal south-east New South Wales and Victoria in Australia. It is also known as the owl frog, southern owl frog, spotted owl frog, burrowing owl frog. [4]

Contents

Description

This is a large species of frog, up to 10 centimetres (3.9 in) in length. It is normally grey, dark brown or black on the back. It is white on the belly. There are yellow spots on the side and a yellow stripe on the upper lip, from the back of the eye to the back of the tympanum. In metamorph frogs, this stripe is pink-orange in colour. The skin is rough and bumpy, males often have black spines on their fingers during the breeding season. This iris is silver and the pupil is vertical.

This is quite a large species of frog and the largest frog in Victoria. It is often mistaken for the cane toad because of its large size and bumpy skin; however, cane toads do not have vertical irises, and the range of the cane toad currently does not overlap into giant burrowing frog habitat.

Ecology and behaviour

A giant burrowing frog tadpole Giant Burrowing Frog (Heleioporus australiacus) tadpole.jpg
A giant burrowing frog tadpole

This species inhabits sandstone heathland, dry, and also wet sclerophyll forest from north of Sydney to eastern Victoria. They are called burrowing frogs because of their burrowing ability.

Males call from burrows on the edges of creeks during autumn and spring, usually after heavy rainfall. [3] The call of the giant burrow frog is very low-pitched "ou-ou-ou-ou-ou", somewhat resembling that of an owl (hence the name), and only lasts one or two seconds. The spines on the males' fingers may be used for fighting. [5]

The female lays between 750 and 1250 unpigmented eggs, either in inundated burrows or underneath heavy vegetation in dams, ditches, and slow-flowing streams. The tadpoles develop in the stream, escaping when it floods. The tadpoles are grey in colour, with grey fins with light flecks. [5] They are very large in size, up to 80 millimetres (3.1 in), take 3 to 11 months to develop, and are very slow-moving. They have been observed in clear water with a pH of 4.3 to 6.5 and a temperature range of 8.5 to 26.5 °C. [6]

These frogs are difficult to find, and best seen at night after thunderstorm activity in the summer or after substantial rainfall. [6]

Conservation

This species has declined due to urbanisation and is mostly restricted to national parks and state forests. [6]

Its status was last assessed by the IUCN as a vulnerable species, in 2004. [1]

Since July 2000 the frog has been as vulnerable under the Commonwealth EPBC Act , with another assessment due on 30 September 2021. As of 2021 it is listed as vulnerable in New South Wales under the Biodiversity Conservation Act 2016 (NSW) and threatened under the Flora and Fauna Guarantee Act 1988 (Vic). It is also Listed as Critically Endangered on the Advisory List of Threatened Vertebrate Fauna in Victoria (2013 list). [6]

Captive breeding program

After a population of frogs was located by a PhD student in East Gippsland in August 2020, Zoos Victoria biologists managed to locate some tadpoles and took them back to Melbourne Zoo. The first captive breeding program for the giant burrowing frog is under way as of 2021, managed by Melbourne Zoo and the Arthur Rylah Institute. [7]

Related Research Articles

<span class="mw-page-title-main">Cane toad</span> Worlds largest true toad

The cane toad, also known as the giant neotropical toad or marine toad, is a large, terrestrial true toad native to South and mainland Central America, but which has been introduced to various islands throughout Oceania and the Caribbean, as well as Northern Australia. It is a member of the genus Rhinella, which includes many true toad species found throughout Central and South America, but it was formerly assigned to the genus Bufo.

<span class="mw-page-title-main">Corroboree frog</span> Name for two species of amphibian

Corroboree frogs comprise two species of frog native to the Southern Tablelands of Australia. Both species are small, poisonous ground-dwelling frogs. The two species are the southern corroboree frog and the northern corroboree frog. They are unique among frogs in that they produce their own poison rather than obtain it from their food source as is the case in every other poisonous frog species.

<span class="mw-page-title-main">Spotted grass frog</span> Species of amphibian

The spotted grass frog or spotted marsh frog is a terrestrial frog native to Australia. It is distributed throughout all of New South Wales and Victoria, eastern South Australia, the majority of Queensland, and eastern Tasmania. It is also naturalised in Western Australia, having been unintentionally introduced at Kununurra in the 1970s, apparently during the relocation of several hundred transportable homes from Adelaide.

<span class="mw-page-title-main">Growling grass frog</span> Species of amphibian

The growling grass frog, also commonly known as the southern bell frog, warty swamp frog and erroneously as the green frog, is a species of ground-dwelling tree frog native to southeastern Australia, ranging from southern South Australia along the Murray River though Victoria to New South Wales, with populations through Tasmania. This species' common names vary between states; the name southern bell frog applies in New South Wales and South Australia, growling grass frog in Victoria, and green and gold frog in Tasmania. This species has been introduced to New Zealand.

<span class="mw-page-title-main">Jervis Bay tree frog</span> Species of amphibian

The Jervis Bay tree frog, also known as the curry frog in reference to its odour, is a species of Australian frog associated with wallum swampland along the east coast of New South Wales; ranging from the Queensland border to eastern Victoria.

<span class="mw-page-title-main">Southern toad</span> Species of amphibian

The southern toad is a true toad native to the southeastern United States, from eastern Louisiana and southeastern Virginia south to Florida. It often lives in areas with sandy soils. It is nocturnal and spends the day in a burrow. Its coloring is usually brown but can be red, gray, or black. It is approximately 8 cm (3 inches) long.

<span class="mw-page-title-main">Red-crowned toadlet</span> Species of amphibian

The red-crowned toadlet is a species of Australian ground frog, restricted to the Sydney Basin, New South Wales. It is only found around sandstone escarpment areas around Sydney, from Ourimbah in the north, Nowra to the south and the Blue Mountains areas to the west.

<span class="mw-page-title-main">Littlejohn's tree frog</span> Species of amphibian

Littlejohn's tree frog, also called a heath frog or orange-bellied tree frog, is a species of tree frog native to eastern Australia from Wyong, New South Wales, to Buchan, Victoria.

<span class="mw-page-title-main">Plains spadefoot toad</span> Species of amphibian

The plains spadefoot toad is a species of American spadefoot toad which ranges from southwestern Canada, throughout the Great Plains of the western United States, and into northern Mexico. Like other species of spadefoot toads, they get their name from a spade-like projection on their hind legs which allows them to dig into sandy soils. Their name, in part, comes from their keratinized metatarsals, which are wide instead of "sickle shaped". The species name translates as buzzing leaf shaped. This refers to the species' distinguishing features; its buzzing mating call, and its leaf-shaped digging metatarsals. It was first described by Cope in 1863.

<span class="mw-page-title-main">Amphibians of Australia</span>

Amphibians of Australia are limited to members of the order Anura, commonly known as frogs. All Australian frogs are in the suborder Neobatrachia, also known as the modern frogs, which make up the largest proportion of extant frog species. About 230 of the 5,280 species of frog are native to Australia with 93% of them endemic. Compared with other continents, species diversity is low, and may be related to the climate of most of the Australian continent. There are two known invasive amphibians, the cane toad and the smooth newt.

<span class="mw-page-title-main">Painted burrowing frog</span> Species of amphibian

The painted burrowing frog is a species of burrowing frog native to western Victoria, eastern South Australia and southern New South Wales. They are also one of six species of frog which inhabit Kangaroo Island.

<span class="mw-page-title-main">Sudell's frog</span> Species of amphibian

The Sudell's frog, painted burrowing frog, trilling frog or desert trilling frog is a species of burrowing frog common to a large part of southeastern Australia. It is found on and west of the Great Dividing Range of New South Wales to western Victoria and southern Queensland, as well as far eastern South Australia, and southern regions of the Northern Territory.

<span class="mw-page-title-main">Long-thumbed frog</span> Species of amphibian

The long-thumbed frog, Fletcher's frog or barking marsh frog is a species of non-burrowing ground frog native to south-eastern Australia. The species belongs to the genus Limnodynastes. The twelve species in the genus are characterised by a lack of toe pads. Following phylogenetic analysis, the species was placed in L. peronii clade group alongside L. depressus, L.tasmaniensis and L. peronii.

<span class="mw-page-title-main">Knife-footed frog</span> Species of amphibian

The knife-footed frog is a species of burrowing frog in the family Hylidae. It is endemic to Australia, where it is found over a wide area in the north of the continent.

<span class="mw-page-title-main">Western spotted frog</span> Species of amphibian

The western spotted frog is a species of frog in the family Limnodynastidae. It is endemic to Western Australia. Its natural habitats are temperate forests, temperate shrubland, intermittent rivers, freshwater marshes, rocky areas, granite outcrops, arable land, pastureland, open excavations, and canals and ditches. It is threatened by habitat loss and salinity.

<span class="mw-page-title-main">Giant banjo frog</span> Species of amphibian

The giant banjo frog, giant pobblebonk frog, giant bullfrog, or great bullfrog is a species of frog, endemic to Australia, in the family Limnodynastidae. Fry was the first to recognise the species of Giant Banjo Frog as a distinct subspecies of Banjo Frog, differing from the similar Southern or Eastern Banjo Frogs which occupied most of eastern Australia.

<span class="mw-page-title-main">African bullfrog</span> Species of frog

The African bullfrog, also known as the Giant bullfrog or the South African burrowing frog, is a species of frog in the family Pyxicephalidae. It is also known as the pixie frog due to its scientific name. It is found in Angola, Botswana, Kenya, Malawi, Mozambique, Namibia, South Africa, Tanzania, Uganda, Zambia, Zimbabwe, and possibly the Democratic Republic of the Congo. It has been extirpated from Eswatini. It has long been confused with the edible bullfrog, and species boundaries between them, including exact range limits, are not fully understood. Additionally, P. angusticeps of coastal East Africa only was revalidated as a separate species in 2013.

<span class="mw-page-title-main">Mertens' water monitor</span> Species of lizard

Mertens' water monitor, also called commonly Mertens's water monitor, and often misspelled Mertin's water monitor, is a species of lizard in the family Varanidae. The species is endemic to northern Australia, and is a wide-ranging, actively foraging, opportunistic predator of aquatic and riparian habitats. It is named after German herpetologist Robert Mertens.

<span class="mw-page-title-main">Mitchell's water monitor</span> Species of lizard

Mitchell's water monitor is a semiaquatic species of monitor lizard in the family Varanidae. The species is native to Australia. The species is native to the Northern regions of Australia, and is on IUCN's Red List as a critically endangered species. They can be distinguished by the orange or yellow stripes along their neck and dark spots along their back. They are mainly carnivorous, and eat small prey such as lizard, birds, and insects.

Burrowing frog may refer to several fossorial frog species:

References

  1. 1 2 3 Hero, J.-M.; Lemckert, F.; Gillespie, G.; Robertson, P.; Littlejohn, M. (2004). "Heleioporus australiacus". IUCN Red List of Threatened Species . 2004: e.T41046A10393601. doi: 10.2305/IUCN.UK.2009.RLTS.T41046A10393601.en . Retrieved 19 November 2021.
  2. 1 2 Frost, Darrel R. (2023). "Heleioporus australiacus (Shaw and Nodder, 1795)". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. Retrieved 30 January 2023.
  3. 1 2 Heleioporus australiacus (Giant Burrowing Frog) (PDF) (Consultation Document on Listing Eligibility and Conservation Actions). Canberra, Australia: Department of Agriculture, Water and the Environment. 2020. 33.
  4. National Parks and Wildlife Service (New South Wales) (NPWS). Giant burrowing frog (PDF) (Report). Archived from the original (PDF) on 18 July 2005.
  5. 1 2 Black, Dave. "Heleioporus australiacus: Giant Burrowing Frog". Frogs of Australia. Retrieved 31 March 2021.
  6. 1 2 3 4 "Heleioporus australiacus - Giant burrowing frog". Species Profile and Threats Database (SPRAT). Australian Government. Department of Agriculture, Water and the Environment. Archived from the original on 31 March 2021. CC-BY icon.svg Text may have been copied from this source, which is available under a Attribution 3.0 Australia (CC BY 3.0 AU) licence.
  7. Cook, Mim (31 March 2021). "Rare giant burrowing frog in world-first captive breeding program at Melbourne Zoo". ABC News. Australian Broadcasting Corporation. Retrieved 31 March 2021.

Further reading