Stephen's Island gecko

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Stephen's Island gecko
Stephensislandgecko.jpg
Stephen's Island gecko on Maud Island in the Marlborough Sounds
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Infraorder: Gekkota
Family: Diplodactylidae
Genus: Toropuku
Species:
T. stephensi
Binomial name
Toropuku stephensi
(Robb, 1980)
Toropuku stephensi - map.svg
Distribution of the Stephen's Island gecko on a map of the South Island
  Known native range
Synonyms [2]
  • Hoplodactylus stephensi
    Robb, 1980
  • Toropuku stephensi
    Nielsen et al., 2011

The Stephen's Island gecko (Toropuku stephensi), also known commonly as the Cook Strait striped gecko, [3] Stephen's sticky-toed gecko, and the striped gecko, is a species of gecko in the genus Toropuku in the family Diplodactylidae. [4] The species is endemic to New Zealand.

Contents

Taxonomy and etymology

The holotype of T. stephensi is in the collection of the Museum of New Zealand Te Papa Tongarewa. [5] The genus name, Toropuku, derives from the Maori word for "secret" or "stealthy". [2] The specific name, stephensi, refers to Stephens Island, New Zealand. [6] Toropuku was believed to be a monotypic genus until the 2020 description of Toropuku inexpectatus. [4]

Habitat

The preferred natural habitats of T. stephensi are coastal forest and shrubland, at altitudes from sea level to 225 m (738 ft). [1] T. stephensi is known from several small islands in the Cook Strait between North Island and South Island of New Zealand. It was first described from Stephens Island, and occurs in higher densities on Maud Island. In 2019, a population was also established on Puangiangi Island. A discontinuous population found in the Coromandel Peninsula of North Island was given its own species, T. inexpectatus, in 2020.

Reproduction

T. stephensi is viviparous and has a low reproductive rate, with females giving birth to 1-2 young every other year. Sexual maturity is estimated to be at six years, and total life expectancy exceeds 16 years.

Conservation status

As of 2012 the Department of Conservation (DOC) classified the Stephen's Island gecko as Nationally Vulnerable under the New Zealand Threat Classification System. [3]

The IUCN lists T. stephensi as endangered, as it occupies limited areas at a small population density. Mainland populations in particular (now T. inexpectatus) are under pressure from introduced cats, rodents, and stoats. Urban development and a higher density of cats intensifies this pressure near the town of Coromandel. In 2020, T. stephensi was split into two species, with the Coromandel peninsula populations placed into T. inexpectatus. A re-evaluation of T. stephensi's conservation status is necessary, as the species is now believed to be restricted to the three islands in the Cook Strait. [4] Despite the small area occupied by the Cook Strait island populations, they seem to be stable and protected from introduced predators, as the islands are nature reserves which can only be accessed by permit.

Related Research Articles

<i>Hoplodactylus</i> Genus of lizards

Hoplodactylus is a genus of geckos in the family Diplodactylidae. The genus is endemic to New Zealand, one of the seven genera of geckos found only in New Zealand. Hoplodactylus comprises two species of large to gigantic brownish lizards.

<span class="mw-page-title-main">Duvaucel's gecko</span> Species of reptile

Duvaucel's gecko is a species of lizard in the family Diplodactylidae. The species is endemic to New Zealand and regarded as 'at risk' by the New Zealand Department of Conservation (DOC) due to distribution limitations.

<i>Gigarcanum</i> Extinct species of lizard

Gigarcanum delcourti, formerly Hoplodactylus delcourti, is an extinct species of gecko in the family Diplodactylidae. It is the largest known of all geckos, with a snout-to-vent length (SVL) of 37 cm (14.6 in) and an overall length of at least 60 cm (23.6 in). It is only known from a single taxidermied specimen collected in the 19th century that was rediscovered unlabelled in a museum in France. The origin of the specimen was undocumented. While originally suggested to have been from New Zealand and the kawekaweau of Māori oral tradition, DNA evidence from the specimen suggests that it originates from New Caledonia.

<span class="mw-page-title-main">Gold-striped gecko</span> Species of reptile

The gold-striped gecko, gold-stripe gecko, or golden sticky-toed gecko is a species of gecko in the family Diplodactylidae. It is endemic to New Zealand, and is only found in the Taranaki region and Mana Island. The holotype is in the collection of the Museum of New Zealand Te Papa Tongarewa.

<span class="mw-page-title-main">Black-eyed gecko</span> Species of lizard

The black-eyed gecko, also known commonly as Whitaker's sticky-toed gecko, is a species of lizard in the family Diplodactylidae. An alpine gecko species, discovered in 1970, it inhabits high-altitude mountains in three areas of the South Island of New Zealand. It is the highest-altitude lizard species in New Zealand, living up to 2,200 m (7,200 ft) above sea level.

<span class="mw-page-title-main">Harlequin gecko</span> Species of lizard

The harlequin gecko, formerly Hoplodactylus rakiurae, is a species of gecko, a lizard in the family Diplodactylidae. The species is endemic to Stewart Island / Rakiura in the far south of New Zealand, where it was discovered in 1969. In terms of distribution it is one of the southernmost gecko species in the world.

<span class="mw-page-title-main">Marlborough green gecko</span> Species of lizard

The Marlborough green gecko, also known as the manuka gecko, is a small species of gecko endemic to New Zealand. It grows to a maximum of 70mm, and is green, with some individuals displaying gold markings. The underside of the gecko is a lighter green in females, and silvery in males. The holotype is in the collection of the Museum of New Zealand Te Papa Tongarewa.

<span class="mw-page-title-main">Forest gecko</span> Species of lizard

The forest gecko is a species of gecko that is endemic to New Zealand. Its Māori name is moko pirirākau. It is found in all parts of the country except the Far North and Canterbury. It is a protected species under the Wildlife Act 1953.

<i>Woodworthia maculata</i> Species of lizard

Woodworthia maculata, also known as the New Zealand common gecko or Raukawa gecko, is a species in the family Diplodactylidae. The species is endemic to New Zealand.

<i>Dactylocnemis</i> Genus of lizards

Dactylocnemis pacificus, the Pacific gecko or Pacific sticky-toed gecko, is a species in the family Gekkonidae, endemic to the North Island and offshore islands of New Zealand. D. pacificus is the only described species in the genus Dactylocnemis, but five offshore island forms may represent new species, one of which is the Mokohinau gecko.

<span class="mw-page-title-main">Tākitimu gecko</span> Species of lizard

The Tākitimu gecko is an endemic species of gecko in the family Diplodactylidae found in the Southland region of New Zealand. Tākitimu gecko were first described by Jewell and Leschen in 2004 as Hoplodactylus cryptozoicus.

<span class="mw-page-title-main">Diplodactylidae</span> Family of lizards

The Diplodactylidae are a family in the suborder Gekkota (geckos), with over 150 species in 25 genera. These geckos occur in Australia, New Zealand, and New Caledonia. Diplodactylids are the most ecologically diverse and widespread family of geckos in both Australia and New Caledonia, and are the only family of geckos found in New Zealand. Three diplodactylid genera have recently been split into multiple new genera.

<i>Toropuku</i> Genus of lizards

Toropuku is a genus of lizards in the family Diplodactylidae endemic to New Zealand. It includes two species:

<i>Mokopirirakau</i> Cryptic Alpine Gecko Genus in New Zealand

The Mokopirirakau genus comprises alpine geckos found only in New Zealand. The name is Māori, and comes from “Moko”, referring to lizards, and “pirirakau”, which refers to forests. This is a newly recognized genus as it was previously included in the Hoplodactylus genus. Many of the species within this genus are still at candidatus status because of this, but also because of the difficulty that comes with researching these species and this genus in particular. Much of the current research about geckos in New Zealand is built off assumptions, indicating that better surveying methods are needed to come to any real conclusions about their behaviour and ecology.

<span class="mw-page-title-main">Pygopodoidea</span> Superfamily of lizards

Pygopodoidea is a gecko superfamily and the only taxon in the gekkotan subclade Pygopodomorpha. The clade includes three Australasian families: Diplodactylidae, Carphodactylidae, and Pygopodidae. Traditional gekkotan systematics had considered Diplodactylidae and Carphodactylidae as subfamilies of the family Gekkonidae, but recent molecular work have placed Pygopodidae within Gekkonidae making it paraphyletic. These analyses have shown support of Pygopodidae and Carphodactylidae being sister taxa, with Diplodactylidae occupying a basal position in Pygopodoidea.

<span class="mw-page-title-main">Aupouri green gecko</span> Species of reptile

The Aupōuri green gecko, also known as the North Cape green gecko or yellow-lipped green gecko, is a species of gecko in the family Diplodactylidae. While the existence of the species was known for many years, it was undescribed until early 2021, with its scientific name being Naultinus 'North Cape' prior to description as N. flavirictus.

<i>Toropuku inexpectatus</i> Species of gecko

Toropuku inexpectatus, the northern striped gecko, is a viviparous species of gecko found on the Coromandel Peninsula, New Zealand.

<i>Hoplodactylus tohu</i> Species of lizard

Hoplodactylus tohu, the Tohu gecko, is a species of lizard of the family Diplodactylidae. The lizard is found in the Marlborough Sounds / Cook Strait area of New Zealand.

<span class="mw-page-title-main">Korowai gecko</span> Species of lizard

The korowai gecko, also known as the Muriwai gecko, is a gecko found on the west coast of the Auckland Region of New Zealand. First discovered on Oaia Island in 1954, the species was recognised as distinct from Woodworthia maculata in 2016, and was formally described in 2023. Only 32 individuals are known to exist as of 2023, all within a very restricted range, on Te Korowai-o-Te-Tonga Peninsula, Muriwai Beach, Muriwai Regional Park and Oaia Island.

References

  1. 1 2 Hitchmough, R.; van Winkel, D.; Lettink, M.; Chapple, D. (2019). "Toropuku stephensi". IUCN Red List of Threatened Species . 2019: e.T10253A120187688. doi: 10.2305/IUCN.UK.2019-2.RLTS.T10253A120187688.en . Retrieved 17 November 2021.
  2. 1 2 Species Toropuku stephensi at The Reptile Database www.reptile-database.org.
  3. 1 2 Hitchmough, Rod; Anderson, Peter; Barr, Ben; Monks, Jo; Lettink, Marieke; Reardon, James; Tocher, Mandy; Whitaker, Tony. "Conservation status of New Zealand reptiles, 2012" (PDF). Department of Conservation. The Government of New Zealand. Retrieved 18 July 2015.
  4. 1 2 3 Hitchmough, Rodney A.; Nielsen, Stuart V.; Bauer, Aaron M. (2020-12-04). "Earning your stripes: a second species of striped gecko in the New Zealand gecko genus Toropuku (Gekkota: Diplodactylidae)". Zootaxa. 4890 (4): 578–588. doi:10.11646/zootaxa.4890.4.9. ISSN   1175-5334. PMID   33311111.
  5. "Hoplodactylus stephensi Robb, 1980; holotype". Collections Online. Museum of New Zealand Te Papa Tongarewa. Retrieved 17 July 2010.
  6. Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore, Maryland: Johns Hopkins University Press. xiii + 296 pp. ISBN   978-1-4214-0135-5. (Hoplodactylus stephensi, p. 253).

Further reading