| Potamopyrgus acus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tateidae |
| Genus: | Potamopyrgus |
| Species: | P. acus |
| Binomial name | |
| Potamopyrgus acus Martin Haase, 2008 [2] | |
| Synonyms | |
| |
Potamopyrgus acus is a critically endangered species of fresh water snail native to New Zealand.
This snail has been found in only one location in a gully, on a very small and steep limestone bank, at Limestone Downs Station in the Waikato. This snail was first discovered in 1981 but several surveys in 2002 and 2003 has failed to find any further specimens. The area has been cleared for agriculture and is under threat of damage by cattle. It is possible that this snail is extinct. [3]
In November 2018 the Department of Conservation classified Potamopyrgus acus as Nationally Critical under the New Zealand Threat Classification System. [1] The species was judged as meeting the criteria for Nationally Critical threat status as a result of it occupying a total area of less than 1 hectare. It is found only in one location. [1]
Powelliphanta is a genus of large, air-breathing land snails, pulmonate gastropods in the family Rhytididae, found only in New Zealand. They are carnivorous, eating invertebrates, mostly native earthworms. Often restricted to very small areas of moist forest, they are prey to introduced mammalian predators, and many species are threatened or endangered.
The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status are in use at international, multi-country, national and local levels, as well as for consumer use such as sustainable seafood advisory lists and certification. The two international systems are by the International Union for Conservation of Nature IUCN and The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)
The New Zealand mud snail is a species of very small freshwater snail with a gill and an operculum. This aquatic gastropod mollusk is in the family Tateidae.
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The flaccid catshark is a catshark of the family Scyliorhinidae. It is endemic to the waters around New Zealand.
The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand.
Cytora hirsutissima is a species of very small land snails with an operculum, terrestrial gastropod molluscs in the family Pupinidae.
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The Te Kakahu skink is a critically endangered species of skink native to New Zealand. When discovered, the entire species was inhabiting a single patch of clifftop vegetation on Chalky Island in Fiordland National Park.
The Eyres skink is a nationally vulnerable species of skink native to New Zealand. It is named in honour of the location of its habitat, the Eyre Mountains.
The Nevis skink is a nationally vulnerable species of skink native to New Zealand. It is named in honour of the location of its habitat, the Nevis valley.
Catapyrgus sororius is a critically endangered species of fresh water snail endemic to New Zealand.
Hadopyrgus ngataana is a tiny, transparent, and critically endangered freshwater snail, found only in a single stream in a cave in New Zealand.
Hadopyrgus rawhiti is a critically endangered species of freshwater snail native to New Zealand.
Opacuincola cervicesmadentes is a critically endangered species of freshwater snail endemic to New Zealand.
Opacuincola dulcinella is a critically endangered species of freshwater snail endemic to New Zealand.
Opacuincola eduardstraussi is a critically endangered species of fresh water snail native to New Zealand.
Potamopyrgus doci is a critically endangered species of fresh water snail native to New Zealand.
Potamopyrgus oppidanus is a species of freshwater gastropod mollusk in the family Tateidae. It is endemic to New Zealand where it is found only in one area in the town belt of Wellington.
