Rockstone poison dart frog

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Rockstone poison frog
CITES Appendix II (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Dendrobatidae
Genus: Dendrobates
Species:
D. nubeculosus
Binomial name
Dendrobates nubeculosus
Jungfer and Böhme, 2004
Dendrobates mapa.png
Distribution of the five Dendrobates species, with D. nubeculosus in pink (spot between D. leucomelas in green and D. tinctorius in purple)

The Rockstone poison dart frog (Dendrobates nubeculosus) is a poorly known species of dendrobatid frogs endemic to Guyana. As it is known from only one specimen, very little information is currently available on D. nubeculosus. [1] [3] [4] [5] It has been suggested to be one of the most poorly known species in the world. [5]

Contents

Etymology

Scientists gave this frog the English name "Rockstone" because they found it near the town of Rockstone. They gave it the Latin name nebulosus, or "covered in small clouds", presumably for the patterns on its skin. [3]

Description

D. nubeculosus is a small to medium-sized poison dart frog; larger than many of its contemporary Ranitomeya species, but smaller than the other members of the genus Dendrobates . The holotype specimen measures 2.5 centimetres in length, and the species' size range is unknown. It is reasonably certain that, like other members of the genus Dendrobates, D. nubeculosus females are larger than males, but even this is open to speculation. The holotype is primarily black or dark brown, with irregularly shaped blue splotches on the dorsum, and it is mottled blue and black laterally, with a solid black ventral surface. [6] [3] It is unclear whether, as with other Dendrobates species, D. nubeculosus is polymorphic.

Nothing is known about D. nubeculosus' social behaviour, reproductive habits, call, or toxicity. It is assumed that the breeding habits of Dendrobates nubeculosus are similar to that of its sister taxon, D. leucomelas .

Habitat

D. nubeculosus is only known from a single specimen collected by ornithologists in the 1980s. [5] [6] No precise habitat data exist but the vegetation in the area of the type locality, near Rockstone, a town on the Essequibo River, lowland jungle. [1] [6]

Related Research Articles

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

Poison dart frog is the common name of a group of frogs in the family Dendrobatidae which are native to tropical Central and South America. These species are diurnal and often have brightly colored bodies. This bright coloration is correlated with the toxicity of the species, making them aposematic. Some species of the family Dendrobatidae exhibit extremely bright coloration along with high toxicity — a feature derived from their diet of ants, mites and termites— while species which eat a much larger variety of prey have cryptic coloration with minimal to no amount of observed toxicity. Many species of this family are threatened due to human infrastructure encroaching on their habitats.

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

The blue poison dart frog or blue poison arrow frog is a poison dart frog found in the "forest islands" surrounded by the Sipaliwini Savanna in southern Suriname and northern Pará (Brazil). Its indigenous Tirio name is okopipi. The name "azureus" comes from its azure blue color. While first described as a valid species and usually recognized as such in the past, recent authorities generally treat it as a morph of D. tinctorius, although a few treat it as a subspecies of D. tinctorius or continue to treat it as its own species. To what extent it differs from the blue D. tinctorius in southern Guyana, adjacent Pará (Brazil) and possibly far southwestern Suriname, is also a matter of dispute, and many herpetologists, as well as many people keeping poison dart frogs in captivity, have not distinguished these, with all commonly being identified as azureus.

<i>Mantella</i> Genus of amphibians

Mantella are a prominent genus of aposematic frogs in the family Mantellidae, endemic to the island of Madagascar. Members of Mantella are diurnal and terrestrial, with bright aposematic coloration or cryptic markings.

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

The strawberry poison frog, strawberry poison-dart frog or blue jeans poison frog is a species of small poison dart frog found in Central America. It is common throughout its range, which extends from eastern central Nicaragua through Costa Rica and northwestern Panamá. The species is often found in humid lowlands and premontane forest, but large populations are also found in disturbed areas such as plantations. The strawberry poison frog is perhaps most famous for its widespread variation in coloration, comprising approximately 15–30 color morphs, most of which are presumed to be true-breeding. O. pumilio, while not the most poisonous of the dendrobatids, is the most toxic member of its genus.

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

The dyeing poison dart frog, also known as the cobalt poison frog, tinc, or dyeing poison frog, is a species of poison dart frog. It is among the most variably colored and largest species of poison dart frogs, typically reaching snout–vent lengths of about 50 mm (2.0 in). It is distributed in the eastern portion of the Guiana Shield, including parts of French Guiana, Guyana, Suriname and Brazil.

<span class="mw-page-title-main">Green and black poison dart frog</span> Species of amphibian

The green-and-black poison dart frog, also known as the green-and-black poison arrow frog and green poison frog, is a brightly-colored member of the order Anura native to southern Central America and Colombia. This species has also been introduced to Oahu, Hawaii in an effort to lower mosquito numbers. It is one of the most variably colored species of poison dart frogs, after D. tinctorius, Adelphobates galactonotus and some Oophaga species. From a conservation standpoint, it is considered to be of least concern by the International Union for Conservation of Nature. Within the reptile and amphibian hobby, D. auratus remains one of the most commonly kept, and easiest-to-breed, dart frogs in captivity, as well as in zoos.

<span class="mw-page-title-main">Yellow-banded poison dart frog</span> Species of amphibian

The yellow-banded poison dart frog, also known as yellow-headed poison dart frog or bumblebee poison frog, is a poison dart frog from the genus Dendrobates of the family Dendrobatidae.

The sky-blue poison frog is a species of poison dart frog. It is endemic to Peru and known from the lower eastern versant of the Andes in the upper Amazon basin of the San Martín Region.

<i>Dendrobates</i> Genus of amphibians

Dendrobates is a genus of poison dart frogs native to Central and South America. It once contained numerous species, but most originally placed in this genus have been split off into other genera such as Adelphobates, Ameerega, Andinobates, Epipedobates, Excidobates, Oophaga, Phyllobates and Ranitomeya, leaving only five large to medium-sized species in the genus Dendrobates. All the other genera used to be grouped in with Dendrobates because it was previously thought that all brightly colored poison dart frogs came from the same ancestor but this has since been proven to be incorrect. Dendrobates and Phyllobates evolved conspicuous coloration from the same common ancestor but not the same as any of the other genera listed above.

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

Ranitomeya imitator, is a species of poison dart frog found in the north-central region of eastern Peru. Its common names include mimic poison frog and poison arrow frog, and it is one of the best known dart frogs. It was discovered in the late 1980s by Rainer Schulte who later split it up into more subspecies; describing each as a specific color morph, and sometimes having a separate behavioral pattern. The acoustics, morphs, and behavior of the species have been extensively researched.

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

The blue-bellied poison frog or bluebelly poison frog is a species of frog in the family Dendrobatidae.

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

Vicente's poison frog is a species of frog in the family Dendrobatidae that is endemic to the Veraguas and Coclé Provinces of central Panama.

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

The Peru poison frog, also known as Peruvian poison frog, Peruvian poison-arrow frog and emerald poison frog, is a species of frog in the family Dendrobatidae. It is found in eastern Peru and western Brazil. Its natural habitats are primary premontane and subtropical or tropical moist lowland forests, rivers, freshwater marshes, and intermittent freshwater marshes.

<i>Pristimantis inguinalis</i> Species of frog

Pristimantis inguinalis is a species of frog in the family Strabomantidae. It is found in Guyana, Suriname, French Guiana, and northern Brazil. The type locality is New River, in the disputed area claimed by both Guyana and Suriname. Common names New River robber frog and New River South American rain frog have been coined for it.

<i>Oophaga</i> Genus of amphibians

Oophaga is a genus of poison-dart frogs containing twelve species, many of which were formerly placed in the genus Dendrobates. The frogs are distributed in Central and South America, from Nicaragua south through the El Chocó to northern Ecuador. Their habitats vary with some species being arboreal while other being terrestrial, but the common feature is that their tadpoles are obligate egg feeders. Most species in this genus are seriously threatened and O. speciosa is already extinct.

<i>Adelphobates</i> Genus of amphibians

Adelphobates is a small genus of poison dart frogs. They are found in the central and lower Amazon basin of Peru and Brazil, possibly Bolivia. It was originally erected as a sister group to the Dendrobates and Oophaga genera. The validity of the genus is still being discussed, with the alternative being "Dendrobates galactonotus group" within Dendrobates. One species originally placed in this genus as Adelphobates captivus has since been moved to the genus Excidobates erected in 2008.

<i>Ranitomeya</i> Genus of amphibians

Ranitomeya is a genus of dart poison frogs found in Panama and South America south to Peru and Brazil, possibly into Bolivia.

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

The Amazonian poison frog, known in French as dendrobate à ventre tacheté, is a species of poison dart frog. It is native to South America, where it can be found in Brazil, southeastern Colombia, Ecuador, French Guiana, and Peru.

<i>Ranitomeya amazonica</i> Species of amphibian

Ranitomeya amazonica is a poison dart frog in the genus Ranitomeya. It was first described by Rainer Schulte in 1999 as Dendrobates amazonicus when he separated it from Dendrobates ventrimaculatus, primarily on the basis of call characteristics. The validity of the species has been debated, but further studies, also including genetic data, support its validity.

<span class="mw-page-title-main">Dendrobatinae</span> Subfamily of amphibians

Dendrobatinae is the main subfamily of frogs in the family Dendrobatidae, the poison dart frogs of Central and South America, found from Nicaragua to the Amazon basin in Brazil.

References

  1. 1 2 3 IUCN SSC Amphibian Specialist Group (2018). "Dendrobates nubeculosus". IUCN Red List of Threatened Species . 2018: e.T61769A120314617. doi: 10.2305/IUCN.UK.2018-1.RLTS.T61769A120314617.en . Retrieved 20 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. 1 2 3 Sophie dela Cruz; Kate Korchek (November 19, 2023). Ann T. Chang (ed.). "Dendrobates nubeculosus Jungfer and Böhme, 2004". AmphibiaWeb. University of California, Berkeley. Retrieved July 16, 2024.
  4. Frost, Darrel R. (2014). "Dendrobates nubeculosus Jungfer and Böhme, 2004". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 13 September 2014.
  5. 1 2 3 Cole, C. J.; Townsend, C. R.; Reynolds, R. P.; MacCulloch, R. D.; Lathrop, A. (2013). "Amphibians and reptiles of Guyana, South America: Illustrated keys, annotated species accounts, and a biogeographic synopsis". Proceedings of the Biological Society of Washington. 125 (4): 317–578. doi:10.2988/0006-324X-125.4.317.
  6. 1 2 3 Jungfer, K.-H. & W. Böhme (2004). "A new poison-dart frog (Dendrobates) from northern central Guyana (Amphibia: Anura: Dendrobatidae)" (PDF). Salamandra. 40: 99–104.