| Opacuincola dulcinella | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tateidae |
| Genus: | Opacuincola |
| Species: | O. dulcinella |
| Binomial name | |
| Opacuincola dulcinella Martin Haase, 2008 [2] | |
| Synonyms | |
| |
Opacuincola dulcinella is a critically endangered species of freshwater snail endemic to New Zealand.
This snail has been found in two caves in very close proximity within a 1 km² area in Pōhara, near Tākaka. The population trend of this snail is unknown at present but it is regarded as potentially threatened by urban development and groundwater removal and contamination. [3]
In November 2018 the Department of Conservation classified Opacuincola dulcinella 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 in what is regarded as one location and is also classified as Data Poor under the threat classification system. [1]
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 longfin eel, also known as ōrea, is a species of freshwater eel that is endemic to New Zealand. It is the largest freshwater eel in New Zealand and the only endemic species – the other eels found in New Zealand are the native shortfin eel, also found in Australia, and the naturally introduced Australian longfin eel. Longfin eels are long-lived, migrating to the Pacific Ocean near Tonga to breed at the end of their lives. They are good climbers as juveniles and so are found in streams and lakes a long way inland. An important traditional food source for Māori, who name them ōrea, longfin eel numbers are declining and they are classified as endangered, but over one hundred tonnes are still commercially fished each year.
The lowland longjaw galaxias is a galaxiid of the genus Galaxias, found only in the South Island of New Zealand, in the Kauru River, a tributary of the Kakanui River in north Otago, and in parts of the upper Waitaki catchment. It grows to a length of up to 7 cm.
Chiltonia is a genus of amphipod crustaceans endemic to New Zealand. Four species are known, three of which live in fresh waters. They were first discovered by Charles Chilton in 1898 and the genus Chiltonia was erected the following year by T. R. R. Stebbing in Chilton's honour.
The New Zealand catshark is a catshark of the family Scyliorhinidae in the order Carcharhiniformes. This species is endemic to in the deep waters around New Zealand. Its length is up to 45 centimetres (18 in). The New Zealand catshark is a small, little-known deep water bottom shark. It is dark brown around the top with a few widely spaced pale spots, and white below. It feeds on bottom-living crustaceans. It is also completely harmless to humans.
The roughskin dogfish is a sleeper shark of the family Somniosidae, found around the world on continental shelves in tropical, subtropical and temperate seas, at depths of between 100 and 1,500 m. It reaches a length of 121 cm.
The sherwood dogfish or Sherwood's dogfish is a very rare sleeper shark of the family Somniosidae, found only around New Zealand. The only specimen studied was about 80 cm long.
The southern sleeper shark or Whitley's sleeper shark is a deepwater benthopelagic sleeper shark of the family Somniosidae found in the southern Atlantic, Indian, Pacific, and Antarctic oceans.
Basileostylus bollonsi, common name the New Zealand flax snail or pupuharakeke, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bothriembryontidae.
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.
Garrick's catshark is a species of shark in the family Scyliorhinidae found in the waters of New Zealand. Its natural habitat is the open seas. The new deep-water catshark, Apristurus garricki, is described from the waters of northern New Zealand. It is named in honour of Jack Garrick.
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 eduardstraussi is a critically endangered species of fresh water snail native to New Zealand.
Potamopyrgus acus 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.
