Gardiner's Seychelles frog

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Gardiner's frog
Sechellophryne gardineri.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Sooglossidae
Genus: Sechellophryne
Species:
S. gardineri
Binomial name
Sechellophryne gardineri
(Boulenger, 1911)
Synonyms [2]
  • Nectophryne gardineri Boulenger, 1911
  • Sooglossus gardineri (Boulenger, 1911)
  • Leptosooglossus gardineri (Boulenger, 1911)

Gardiner's Seychelles frog (Sechellophryne gardineri) is a small frog of the family Sooglossidae and endemic to the Seychelles. [2] It is named after John Stanley Gardiner, English zoologist and oceanographer. [3]

Contents

Description

Gardiner's frog is one of the smallest frogs in the world, reaching a maximum length of 11 millimeters (0.43 inches). Newly hatched frogs measure 3 millimeters (0.12 inches) in length. Adult males are 8 millimeters (0.31 inches) long. It is brown in color, and has a dark stripe running from its mouth to its legs.

This frog is notable for its ability to hear despite the absence of a middle ear cavity. Research has shown that the species is able to use its mouth cavity to amplify sound and transmit it to the inner ear, [4] as explained by co-author Jean-François Aubry . [5]

A relative comparison of the world's smallest frogs SmallestFrogComparison.png
A relative comparison of the world's smallest frogs

Ecology and behavior

Gardiner's frog is a terrestrial frog, feeding on small invertebrates including mites, sciarid larvae, ants, and amphipods. It is restricted to the high- and mid-altitude areas of Mahé and Silhouette Islands of the Seychelles group. This is unusual among the Sooglossidae, as most are restricted to the high altitudes, which have a stable climate due to constant mist. [6] Eggs are laid in small clumps on moist ground and hatch as fully formed small adult frogs. [6] Although Gardiner's frog is common at many sites, it is classified as endangered by the IUCN Red List because it is restricted to only three locations representing five subpopulations. [1]

Taxonomy

Genetic analysis indicates that the two populations of this species are distinct from each other and are possibly even separate species. It has thus been proposed that both populations be considered evolutionary significant units for conservation purposes. [7]

Related Research Articles

<span class="mw-page-title-main">Amphibian</span> Class of ectothermic tetrapods

Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this.

<i>Nasikabatrachus</i> Genus of amphibians

Nasikabatrachus is a genus of frogs. It is presently treated as the only genus in the family Nasikabatrachidae, though previously it was included in the family Sooglossidae. Two species are recognized, Nasikabatrachus bhupathi and Nasikabatrachus sahyadrensis, both endemic to southwestern India. Both Nasikabatrachidae and Sooglossidae are thought to be the only extant families of the superfamily Sooglossoidea.

<span class="mw-page-title-main">Sooglossidae</span> Family of amphibians

Sooglossidae, the Seychelles frogs or Seychelles Island frogs, are a family of frogs found on the Seychelles Islands. Until recently, this family was believed to include the genera Sechellophryne, Nesomantis and Sooglossus, but following a major revision of amphibians in 2006, the genus Nesomantis was named a junior synonym of Sooglossus. Their closest relatives are the purple frogs (Nasikabatrachidae) of India.

<span class="mw-page-title-main">Ghost frog</span> Family of amphibians

Heleophrynidae is a family of frogs, commonly known as ghost frogs. They are thought to be the most basal group in the Neobatrachia. The family consists of two genera, Heleophryne and Hadromophryne, with seven species. Ghost frogs live in swift-moving mountain streams in South Africa. The common name of "ghost frogs" may have been coined because of their occurrence in Skeleton Gorge.

<span class="mw-page-title-main">Gastric-brooding frog</span> Extinct genus of amphibians

Rheobatrachus, whose members are known as the gastric-brooding frogs or platypus frogs, is a genus of extinct ground-dwelling frogs native to Queensland in eastern Australia. The genus consisted of only two species, both of which became extinct in the mid-1980s. The genus is unique because it contains the only two known frog species that incubated the prejuvenile stages of their offspring in the stomach of the mother.

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

The Hamilton's frog is a primitive frog native to New Zealand, one of only four extant species belonging to the family Leiopelmatidae. New Zealand's frog species all are in the family Leiopelmatidae. The male remains with the eggs to protect them and allows the tadpoles to climb onto his back where they are kept moist. It is named in honour of Harold Hamilton the collector of the type specimen. The holotype is in the collection of the Museum of New Zealand Te Papa Tongarewa.

<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.

The Seychelles palm frog is a species of frog that is endemic to Silhouette Island in the Seychelles. It is closely related to Gardiner's frog, Sechellophryne gardineri.

<i>Boulengerula niedeni</i> Species of amphibian

Boulengerula niedeni, the Sagalla caecilian, is a worm-like amphibian first described in 2005. The species was described from a specimen discovered on Sagala Hill, an isolated mountain block of the Taita Hills in Kenya, and is not known from other areas.

<span class="mw-page-title-main">Gardiner's burrowing skink</span> Species of reptile

Gardiner's burrowing skink is a species of lizard in the family Scincidae. P. gardineri is the only species in the (monotypic) skink genus Pamelaescincus. The species is endemic to the Seychelles.

<span class="mw-page-title-main">Betic midwife toad</span> Species of frog

The Betic midwife toad or Sapo Partero Bético is a species of frog in the family Alytidae. It is endemic to mountainous in south eastern Spain. Its natural habitats are temperate forests, freshwater marshes, intermittent freshwater marshes, pastureland, ponds, and aquaculture ponds. It is threatened by habitat loss.

<i>Ericabatrachus</i> Genus of amphibians

Ericabatrachus is a genus of frogs in the family Petropedetidae endemic to the Bale Mountains in Ethiopia. It is monotypic, being represented by the single species Ericabatrachus baleensis, commonly known as the Bale Mountains frog.

<span class="mw-page-title-main">Rose's ghost frog</span> Species of amphibian endemic to South Africa

Rose's ghost frog, or Table Mountain ghost frog, is a species of frog in the family Heleophrynidae endemic to South Africa. It is a medium-sized species with purple or brown blotches on a pale green background and large discs on its fingers and toes. It has a very restricted range, being only known from the slopes of parts of Table Mountain. The tadpoles live in permanent streams but these are in danger of drying up because of the establishment of pine plantations. Because of its small range and changes in its habitat, this frog is listed as critically endangered by the International Union for Conservation of Nature.

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

Thomasset's Seychelles frog or Thomasset's frog is a species of frog in the family Sooglossidae. It is endemic to Seychelles. There are two known populations: one on Silhouette Island and one on Mahé Island.

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

The Chile Darwin's frog, also called the northern Darwin's frog, is one of only two members of the family Rhinodermatidae. It is endemic to central Chile, although it might well be extinct.

<span class="mw-page-title-main">Hyloidea</span> Superfamily of amphibians

Hyloidea is a superfamily of frogs. Hyloidea accounts for 54% of all living anuran species. The superfamily Hyloidea branched off from its closest relative, the Australobatrachia, during the mid-Cretaceous. The fossil evidence found during the Cretaceous-Paleogene extinction event could not determine the effects upon the frogs, due to the lack of fossils. Increased forestation erupted after this extinction, possibly leading to more arboreal adaptations of these anurans to be best suited for this habitat.

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

The Seychelles frog is a species of frog endemic to Mahé, Silhouette and Praslin islands in the Seychelles. It inhabits the floor of damp rainforest at altitudes from 150 m (490 ft) to 991 m (3,251 ft) above sea level. Higher altitude sites are considered to be more climatically stable and more suitable. The species is present in Morne Seychellois National Park, Silhouette National Park and Praslin National Park.

<i>Sechellophryne</i> Genus of amphibians

Sechellophryne is a small genus of sooglossid frogs with only two members living in the Seychelles.

<i>Nasikabatrachus bhupathi</i> Species of amphibian

Nasikabatrachus bhupathi, or Bhupathy's purple frog, is a frog species belonging to the family Nasikabatrachidae. It can be found in the Western Ghats in India and was discovered near the Srivilliputhur Grizzled Giant Squirrel Wildlife Sanctuary. The specific epithet honors the late Indian herpetologist Subramanian Bhupathy (1963–2014).

<span class="mw-page-title-main">Sooglossoidea</span> Superfamily of frogs

Sooglossoidea is a superfamily of frogs. It contains only two highly divergent families consisting of three genera with two species each, one family being found in southwestern India and the other in the Seychelles.

References

  1. 1 2 IUCN SSC Amphibian Specialist Group (2013). "Sechellophryne gardineri". IUCN Red List of Threatened Species . 2013: e.T20380A15181011. doi: 10.2305/IUCN.UK.2013-1.RLTS.T20380A15181011.en . Retrieved 24 August 2021.
  2. 1 2 Frost, Darrel R. (2021). "Sechellophryne gardineri (Boulenger, 1911)". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001 . Retrieved 24 August 2021.
  3. Beolens, Bo; Watkins, Michael & Grayson, Michael (2013). The Eponym Dictionary of Amphibians. Pelagic Publishing. p. 76. ISBN   978-1-907807-42-8.
  4. Boistel, R.; Aubin, T.; Cloetens, P.; Peyrin, F.; Scotti, T.; Herzog, P.; Gerlach, J.; Pollet, N.; Aubry, J.-F. (2013). "How minute sooglossid frogs hear without a middle ear". Proceedings of the National Academy of Sciences. 110 (38): 15360–15364. Bibcode:2013PNAS..11015360B. doi: 10.1073/pnas.1302218110 . PMC   3780892 . PMID   24003145.
  5. "Tiny frogs can hear using their mouths". CNN. Retrieved April 19, 2022.
  6. 1 2 "Gardiner's tree frog - Sooglossus gardener". ARKive. Archived from the original on 2008-08-21. Retrieved 2016-04-09.
  7. Groombridge, Jim J.; Taylor, Michelle L.; Bradfield, Kay S.; Maddock, Simon T.; Bunbury, Nancy; Chong-Seng, Lindsay; Griffiths, Richard A.; Labisko, Jim (2019). "Endemic, endangered and evolutionarily significant: cryptic lineages in Seychelles' frogs (Anura: Sooglossidae)" (PDF). Biological Journal of the Linnean Society. 126 (3): 417–435. doi:10.1093/biolinnean/bly183. hdl:2436/622078.