Uroplatus | |
---|---|
Uroplatus sikorae | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Squamata |
Family: | Gekkonidae |
Subfamily: | Uroplatinae |
Genus: | Uroplatus A.M.C. Duméril, 1806 [2] |
Species | |
21 species (see text) |
Uroplatus is a genus of geckos, commonly referred to as leaf-tail geckos or flat-tailed geckos, which are endemic to Madagascar and its coastal islands, such as Nosy Be. They are nocturnal, insectivorous lizards found exclusively in primary and secondary forest.
The generic name, Uroplatus, is a Latinization of two Greek words: "ourá" (οὐρά) meaning "tail" and "platys" (πλατύς) meaning "flat". [3]
Geckos of the genus Uroplatus are nocturnal and arboreal. They range in total length (including tail) from about 30 cm (12 in) for U. giganteus to 10 cm (3.9 in) for U. ebenaui. Larger species of Uroplatus are distinguished among geckos in having the largest number of marginal teeth among all living amniotes. Their distinctive laryngotracheal complex has been used to defend their monophyly. [4] Other rare apomorphic character states include multiple inscriptional ribs, restriction of autotomy planes, and finger-like diverticula of the lungs. [5]
All Uroplatus species have highly cryptic colouration, which acts as camouflage, most being grayish-brown to black or greenish-brown with various markings resembling tree bark. There are two variations of this camouflage: leaf form, and bark form. The leaf form is present in a number of small-bodied species. All other forms blend in well with tree bark upon which they rest during the day. Some of these tree bark forms have developed a flap of skin, running the length of the body, known as a "dermal flap", which they lay against the tree during the day, scattering shadows, and making their outline practically invisible. These geckos bear a resemblance to geckos of the genera Phyllurus and Saltuarius of Australia. This is an example of convergent evolution.
The skull of Uroplatus is strongly ossified, with an extremely high tooth count and incipient secondary palate. [6]
Uroplatus geckos are exclusively nocturnal. The larger species spend most of the daylight hours hanging vertically on tree trunks, head down, resting, while the smaller leaf tailed geckos (U. phantasticus, U. ebenaui, U. finiavana, U. malama, U. fiera, U. fotsivava, and U. kelirambo) spend more time in bushes and small trees imitating twigs and leaves. They are all insectivores.
During their breeding season, female Uroplatus lay from 2–4 eggs depending on species and conditions.
Uroplatus are found in the herpetology and pet trade, but rarely. Most are threatened by deforestation and habitat loss. The difficulty in diagnosing between species has led to accidental exportation of both threatened and undescribed species. [7]
Habitat destruction and deforestation in Madagascar is the primary threat to the future of Uroplatus geckos as well as collection for the pet trade. [8] The World Wide Fund for Nature (WWF) lists all of the Uroplatus species on their "Top ten most wanted species list" of animals threatened by illegal wildlife trade, because of it "being captured and sold at alarming rates for the international pet trade". It is a CITES Appendix 2 protected animal. [8]
The genus Uroplatus has had a complex taxonomic history. A detailed study from 2013 suggested there were at least 11 undescribed cryptic species in the genus, [7] several of which have been described since its publication. [9] [10] [11] In an attempt to better delineate the species boundaries of this genus, researchers have proposed karyotype analysis. [12] These studies have yielded interesting results suggesting that Uroplatus is in a transitory evolutionary phase between two different chromosome shapes, arocentric and asymmetrical. [13]
The following 22 species are recognised. [14]
Nota bene : A binomial authority in parentheses indicates that the species was originally described in a genus other than Uroplatus.
Lygodactylus is a genus of diurnal geckos with 82 species. They are commonly referred to as dwarf geckos. They are mainly found in Africa and Madagascar although two species are found in South America. Lygodactylus picturatus, the best known species, is found in Kenya and commonly known as the white-headed dwarf gecko. Recently, illegal importation from Tanzania of brightly colored, Lygodactylus williamsi, known as electric blue geckos, has been gaining attention for Lygodactylus geckos in the reptile trade.
Paroedura is a genus of geckos, endemic to Madagascar and the Comoros. These geckos are typically terrestrial, though the young of most species can climb until they are too heavy for their feet to support.
Calumma is a genus of chameleons, highly adapted and specialised lizards, in the family Chamaeleonidae. The genus is endemic to the island of Madagascar. One species, formerly known as Calumma tigris, was transferred to the genus Archaius in 2010, upon the discovery of its closer relation to Rieppeleon—one of several genera referred to collectively as "leaf" or "pygmy" chameleons—rather than to Calumma. The earliest known fossil of the genus is of Calumma benovskyi, from early Miocene Kenya, showing that the genus likely originated on mainland East Africa. The genus includes one of the heaviest and longest chameleon species, the Parson's chameleon.
Uroplatus ebenaui, commonly known as Ebenau's leaf-tailed gecko, the Nosy Be flat-tail gecko, and the spearpoint leaf-tail gecko, is a species of lizard in the family Gekkonidae. The species is native to Madagascar.
Uroplatus phantasticus, the satanic leaf-tailed gecko, eyelash leaf-tailed gecko or the phantastic leaf-tailed gecko, is a species of gecko indigenous to the island of Madagascar. First described in 1888 by George Albert Boulenger, U. phantasticus is the smallest in body of the Uroplatus geckos, though there is an ongoing debate as to whether one of its cousins, U. ebenaui, is smaller because of its shorter tail.
Cophylinae is a subfamily of microhylid frogs endemic to Madagascar. It has over 100 species in eight genera. Members of this subfamily range from minute to fairly large, and they are highly ecologically diverse. DNA barcode research has revealed a significant taxonomic gap in this subfamily, and an estimated 70+ candidate species were identified. Many of these have subsequently been described, as well as numerous new discoveries.
Cophyla is a genus of microhylid frogs endemic to Madagascar.
Stumpffia is a genus of microhylid frogs that are endemic to Madagascar. They are mostly brown frogs that typically live among leaf litter. S. contumelia has a snout–vent length of about 8–9 mm (0.31–0.35 in), making it one of the world's smallest frogs, and several others in the genus are only slightly larger. The largest species is no more than 28 mm (1.1 in).
Mantidactylus is a frog genus in the mantellid subfamily Mantellinae. This genus is restricted to Madagascar. The genus is divided into several subgenera that form monophyletic genetic clusters and are ecologically similar.
Rhombophryne is a genus of microhylid frogs endemic to Madagascar. It is currently estimated to include more than 23 species, but only 20 of these are currently described. The common name 'diamond frog' has been proposed and used for members of this genus.
Gephyromantis is a frog genus in the mantellid subfamily Mantellinae. This genus is restricted to Madagascar. At present it contains 45 species divided into six subgenera.
Uroplatus sikorae, commonly referred to as the mossy leaf-tailed gecko or the southern flat-tail gecko, is a species of lizard in the family Gekkonidae. The species is endemic to Madagascar. It is a CITES II protected animal due to habitat loss.
Uroplatus sameiti is a species of leaf-tailed gecko. Like all members of the genus Uroplatus, U. sameiti is endemic to Madagascar, and is found in primary and secondary forests on the island. It has the ability to change its skin colour to match its surroundings and possesses dermal flaps which break up its outline when at rest.
The Ibity ground gecko is a species of lizard in the family Gekkonidae. Though initially described in 1998 as a subspecies of the Mocquard's Madagascar ground gecko, it has been recognized as a distinct species within the species complex since 2008. It is endemic to Ibity and Itremo in the Central Highlands of Madagascar, and is named after Mount Ibity where it was first discovered.
Uroplatus pietschmanni, known commonly as the cork-bark leaf-tail gecko, the cork bark leaftail gecko, and the spiny leaf-tailed gecko, is a species of lizard in the family Gekkonidae. The species is endemic to Madagascar.
Achille Philippe Raselimanana is a Malagasy herpetologist.
Louis Heyns Du Preez is a South African professor of zoology who specialises in parasitology and herpetology at the North-West University. Du Preez is best known for his research on South African frog species, writing a widely used wildlife guide for the frogs of Southern Africa, and contributions to global parasitology with special focus studies on polystome worms. His contributions to polystome research have led to a recently discovered Malagasy frog species, Blommersia dupreezi, being named in his honour.
Uroplatus garamaso is a species of lizard in the family Gekkonidae. It is endemic to northern Madagascar.
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