Ololygon argyreornatus

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Ololygon argyreornatus
Ololygon argyreornatus

Ololygon argyreornatus

Systematics
Subordination : Neobatrachia
without rank: Tree frogs (arboranae)
Family : Tree frogs i. w. S. (Hylidae)
Subfamily : Knick-toe tree frogs i. w. S. (Scinaxinae)
Genre : Ololygon
Type : Ololygon argyreornatus
Scientific name
Ololygon argyreornatus
( Miranda-Ribeiro , 1926)

Ololygon argyreornatus ( synonym : Scinax argyreornatus ) is a neotropical frog belonging to the subfamily knick-toe tree frogs withinthe tree frog family . According to Faivovich et al. (2005) the species was countedwithin the genus Scinax to the Scinax catharinae clade. In 2016, a separate genus called Ololygon was establishedfor this clade.

Synonyms

  • Hylodes argyreornatus Miranda-Ribeiro, 1926
  • Eleutherodactylus argyreornatus Myers, 1962
  • Hyla argyreornata Bokermann, 1966
  • Ololygon argyreornata Fouquette & Delahoussaye, 1977
  • Scinax argyreornata Duellman & Wiens, 1992

Köhler & Böhme (1996) corrected the ending of the epithet .

distribution

This endemic species of Brazil occurs in the coastal regions of eastern and southern Brazil, from the states of Bahia to Santa Catarina up to 1000 m above sea level. NN before.

description

This knick-toed tree frog is very small compared to other members of the genus. Teixeira & Vrcibradic (2004) examined 110 individuals, of which the males had a head-to-trunk length of 14.4 to 20.8 mm (average 16.2 ± 1.0 mm) and a weight of 0.4 to 1, 0 g (mean 0.5 ± 0.1 g), while the females possessed a KRL of 18.1 to 23 mm (mean 20.7 ± 1 mm) and a weight of 0.5 to 12. g (mean 1 , 0 ± 0.2 g). The females were significantly larger than the males.

Habitat and Ecology

Ololygon argyreornata occurs both in forests and in open areas such as the Restinga bush, but not in agricultural land. The species is often found in bromeliads or on other forest vegetation near its temporary or permanent reproductive waters. The adult females examined by Teixeira & Vrcibradic (2004) had 94–197 (mean 130.1 ± 30.1) mature oocytes in their ovaries. This means that the clutch size of this species is the same or smaller than that of tree frogs with a similar body size. The stomach contents of the animals examined by Teixeira & Vrcibradic (2004) mainly contained landlice and beetle larvae .

Danger

The IUCN lists Ololygon argyreornata as "Least Concern". Its widespread distribution and the fact that the species adopts a wide range of habitats, the overall population shows a stable trend and is estimated to be sufficiently large, explain this. The processors consider it unlikely that stocks of the species can decline quickly enough to justify a higher endangerment level. In addition, Ololygonargyreornata occurs in several protected areas. Agriculture, deforestation, and expanding human settlements, along with the gathering of bromeliads, are the main threats to the species.

Individual evidence

  1. ↑ Julián Faivovich, Célio FB Haddad, Paulo CA Garcia, Darrel R. Frost, Jonathan A. Campbell & Ward C. Wheeler: Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. Bulletin of the American Museum of Natural History 294, pp. 1-240, 2005.
  2. ^ William E. Duellman, AB Marion & S. Blair Hedges: Phylogenetics, classification, and biogeography of the treefrogs (Amphibia: Anura: Arboranae). Zootaxa, 4104, pp. 1–109, 2016
  3. ↑ Darrel R. Frost: Ololygon argyreornatus , Amphibian Species of the World: an Online Reference, Version 6.0, American Museum of Natural History, 1998-2019, accessed August 10, 2019

literature

  • Julián Faivovich, Célio FB Haddad, Paulo CA Garcia, Darrel R. Frost, Jonathan A. Campbell & Ward C. Wheeler: Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. Bulletin of the American Museum of Natural History 294, pp. 1-240, 2005.
  • Köhler, J. & W. Böhme (1996): Anuran amphibians from the region of Pre-Cambrian rock outcrops in northeastern Bolivia, with a note on the gender of Scinax Wagler, 1830 (Hylidae) . Revue Française d'Aquariologie, Herpétologie 23: 133–140.
  • Pimenta, B. & Carvalho e Silva, SP de (2004): Scinax argyreornatus . In: IUCN (2010): IUCN Red List of Threatened Species . Version 2010.1. IUCN Red List of Threatened Species . Downloaded on April 1, 2010.
  • Teixeira, RL & D. Vrcibradic (2004): Ecological aspects of Scinax argyreornatus (Anura, Hylidae) from a cacao plantation in Espírito Santo state, southeastern Brazil . Bol.Mus.Biol.Mello Leitão 17: 35–43.

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