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Threatened Fauna Of Australia
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 list is the list proclaimed under the Australian federal ''Environment Protection and Biodiversity Conservation Act 1999'' (EPBC Act). The classifications are based on those used by the World Conservation Union (IUCN), however IUCN and Australian rankings do differ. Each state and territory has its own legislation relating to environmental protection. Based on the list of Australian animals extinct in the Holocene, about 33 mammals (27 from the mainland, including the thylacine), 24 birds (three from the mainland), one reptile, and three frog species or subspecies are strongly believed to have become extinct in Australia during the Holocene epoch. These figures exclude dubious taxa like the Roper River scrub robin (''Drymodes superciliaris colcloughi'') and possibly exti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryococelus Australis
''Dryococelus australis'', commonly known as the Lord Howe Island stick insect or tree lobster, is a species of stick insect that lives on the Lord Howe Island Group. It is the only member of the monotypic genus ''Dryococelus''. Thought to be extinct by 1920, it was rediscovered in 2001. It is extirpated in its largest former habitat, Lord Howe Island, and has been called "the rarest insect in the world", as the rediscovered population consisted of 24 individuals living on the small islet of Ball's Pyramid. Anatomy and behaviour Adult Lord Howe Island stick insects can measure up to in length and weigh , with males 25% smaller than females. They are oblong in shape and have sturdy legs. Males have thicker thighs than females. Unlike most phasmida, the insects have no wings. The behaviour of this stick insect is highly unusual for an insect species, in that the males and females form a bond in some pairs. The females lay eggs while hanging from branches. Hatching can happen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cherax Tenuimanus
''Cherax tenuimanus'', known as the hairy marron or Margaret River marron, is one of two species of crayfish in Southwestern Australia known as marron. It occupies a narrow range within the southwestern biogeographical region of Margaret River. It is currently listed as critically endangered on the IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ..., because of the threat from the wider ranged smooth marron, '' Cherax cainii'', which was introduced to its habitat. Recent studies have shown that adding mannanoligosaccharide (Bio-Mos) to the diet of ''Cherax tenuimanus'' can increase their immunity and rate of survival. Description The hairy marron ranges in color from olive green to brown to black, with females sometimes having red or purple patches on their und ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adclarkia Dawsonensis
''Adclarkia dawsonensis'', also known as boggomoss snail or Dawson Valley snail, is a species of air-breathing land snail, terrestrial animal, terrestrial pulmonate gastropod mollusk in the family Camaenidae. ''Adclarkia dawsonensis'' was the first species described within the genus ''Adclarkia'' and is found in the Taroom district in Queensland, Australia. The specific name (zoology), specific name ''dawsonensis'' is named for the Dawson River (Queensland), Dawson River valley where the snail is found. The species discovered by John Stanisic, a scientist at the Queensland Museum and it was described in 1996. Distribution There are currently two known locations of the species, both in the Taroom area. The first is located in three boggomosses on Mt Rose Station (private property), with an estimated population >350, spread over an area of approximately 0.75 ha. Before the surrounding land was cleared for farming these three sites were probably part of the same population group. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beddomeia Tumida
''Beddomeia tumida'' is a species of very small (4 ) freshwater snail that has a gill and an operculum. It is an aquatic operculate gastropod mollusc in the family Hydrobiidae, and is endemic to Australia. It had not been spotted for 120 years and was listed by the IUCN as "critically endangered but possibly extinct", when in late 2021 one was found by researchers in yingina/Great Lake in the Central Plateau of Tasmania. A survey found 15 further snails. See also *List of non-marine molluscs of Australia This is a very incomplete list of the non-marine molluscs of the country of Australia. They are part of the invertebrate fauna of Australia. Freshwater gastropods The freshwater molluscs of Australia vary greatly in size, shape, biology and ... References External links * * Hydrobiidae Beddomeia Gastropods of Australia Endemic fauna of Australia Critically endangered fauna of Australia Gastropods described in 1889 Taxonomy articles created by Polbot [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrogammarus Australis
''Austrogammarus australis'', also known as the "Dandenong amphipod" is a species of amphipod crustacean in family Paramelitidae. It is endemic to Australia and until recently thought to be extinct, but surveys conducted in the Dandenong Ranges have revealed small populations. Recent works have been undertaken to improve habitat quality and extend the range of the invertebrate. Found in the same ecological niche In ecology, a niche is the match of a species to a specific environmental condition. Three variants of ecological niche are described by It describes how an organism or population responds to the distribution of resources and competitors (for ... as similar amphipod species, the distinctive "sideways" swimming style and somewhat "hairy" appearance of the amphipod differentiate it. Found in leaf litter at the beginning of small creeks, in at least canopy 75% shade over the water, the species belongs to the shredder feeding guild and occupies the area accordingly, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedder Galaxias
The Pedder galaxias (''Galaxias pedderensis'') is an Australian freshwater fish. It is considered to be extinct in the wild since 2005 by the EPBC Act, and was originally found only in Lake Pedder in Tasmania. Range Originally recorded only in Lake Pedder and inflowing streams, after the construction of the Huon-Serpentine dam in 1972 (the "new" Lake Pedder), its range expanded initially into Lake Gordon and Wedge River. However, by 1980 it had become very rare and no new specimens have been captured in the wild since 1996. Introduced trout are implicated as a major factor in the decline of this species. The species survives in two translocated populations outside its original range, one at Lake Oberon in the Western Arthurs mountain range and one at a modified water supply dam near Strathgordon. Description A small greenish-brown fish, off-white to silvery belly, a profuse irregular and highly variable pattern of alternating off-white and brownish contrasting bands extendi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Online Database
An online database is a database accessible from a local network or the Internet, as opposed to one that is stored locally on an individual computer or its attached storage (such as a CD). Online databases are hosted on websites, made available as software as a service products accessible via a web browser. They may be free or require payment, such as by a monthly subscription. Some have enhanced features such as collaborative editing and email notification. Cloud database A cloud database is a database that is run on and accessed via the Internet, rather than locally. So, rather than keep a customer information database at one location, a business may choose to have it hosted on the Internet so that all its departments or divisions can access and update it. Most database services offer web-based consoles, which the end user can use to provision and configure database instances. See also * List of online databases ** Bibliographic databases * Customer relationship management * List ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christmas Island Shrew
The Christmas Island shrew (''Crocidura trichura''), also known as the Christmas Island musk-shrew is an extremely rare or possibly extinct shrew from Christmas Island. It was variously placed as subspecies of the Asian gray shrew (''Crocidura attenuata'') or the Southeast Asian shrew (''Crocidura fuliginosa''), but morphological differences and the large distance between the species indicate that it is an entirely distinct species. Description The Christmas Island shrew, like other members of the genus ''Crocidura'', is a small short-legged mammal with a distinct pointed muzzle. It has a dark grey to reddish brown colouring. Like all other shrews, the Christmas Island shrew resembles a mouse and weighs in a range between 4.5g-6g. The Christmas Island shrew varies from other forms of the species in that it is beset with long fine hairs, and its tail is much greater in length. The typical lifespan for its genus is approximately one year, but Crocidurine shrews have been reported ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roper River Scrub Robin
The Roper River scrub robin (''Drymodes superciliaris colcloughi''), also known as the allied scrub robin, is a putative subspecies of the northern scrub robin, a bird in the Petroicidae, or Australasian robin family (biology), family. Whether it ever existed is doubtful; if it did it is almost certainly extinction, extinct. History The subspecies was described in 1914 by Gregory Mathews and named subspecifically for the collector, M. J. Colclough. The description was based on two skins obtained in 1910, supposedly from the Tropical monsoon climate, tropical monsoonal Roper River region of the eastern Top End of the Northern Territory of Australia. The specimens were taken by an ornithology, ornithological collecting expedition sponsored by wealthy amateur ornithologist and oology, oologist Henry Luke White, H. L. White. The expedition was in the Roper area from 15 July until 22 November 1910. Description There are only two bird collections, specimens of the scrub robin, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxon
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's Linnaean taxonomy, system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard de Jussieu, Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first mad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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