Dendrobates | |
---|---|
Dendrobates tinctorius | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Amphibia |
Order: | Anura |
Family: | Dendrobatidae |
Subfamily: | Dendrobatinae |
Genus: | Dendrobates Wagler, 1830 |
Type species | |
Dendrobates tinctorius Cuvier, 1797 | |
Diversity | |
5 species (see text) | |
Distribution of the five Dendrobates species |
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 (essentially all the brightly marked poison dart frogs; i.e. excluding the duller genera in the family like Colostethus and Hyloxalus ), leaving only five large to medium-sized species in the genus Dendrobates. [1] [2] 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. [3] Dendrobates and Phyllobates evolved conspicuous coloration from the same common ancestor but not the same as any of the other genera listed above. [4]
There is accumulating evidence that Dendrobates are diet specialists and sequester the toxin found on their skin from their diet. It has been found that diet specialization evolved in tandem with conspicuous coloration in the case of Dendrobates. [5]
The generic name Dendrobates is derived from Ancient Greek δένδρον déndron 'tree',andβάτης bátēs 'one that treads', meaning ‘tree climber’. [6]
Image | Common name | Binomial name and authority [7] | Distribution |
---|---|---|---|
Green and black poison dart frog | Dendrobates auratus (Girard, 1855) | southeastern Nicaragua on the Atlantic slope and southeastern Costa Rica on the Pacific coast through Panama to northwestern Colombia (Chocó Department) | |
Yellow-banded poison dart frog | Dendrobates leucomelas Steindachner, 1864 | Guyana, Brazil, Venezuela and the extreme easternmost part of Colombia | |
Rockstone poison dart frog | Dendrobates nubeculosus Jungfer and Böhme, 2004 | near Rockstone, Guyana | |
Dyeing poison dart frog | Dendrobates tinctorius (Cuvier, 1797) | Guiana Shield, including parts of Guyana, Suriname, Brazil, and nearly all of French Guiana. | |
Yellow-striped poison dart frog | Dendrobates truncatus (Cope, 1861) | Colombia |
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, while others have cryptic coloration with minimal to no amount of observed toxicity. The species that have great toxicity derive this feature from their diet of ants, mites and termites. However, other species that exhibit cryptic coloration, and low to no amounts of toxicity, eat a much larger variety of prey. Many species of this family are threatened due to human infrastructure encroaching on their habitats.
The phantasmal poison frog or phantasmal poison-arrow frog is a species of poison dart frog. It is endemic to Ecuador and known from the Andean slopes of central Ecuador in Bolívar Province. They have radiant colors. This species is endangered, and there are only a few locations in the wild where they are known to live.
Aposematism is the advertising by an animal to potential predators that it is not worth attacking or eating. This unprofitability may consist of any defenses which make the prey difficult to kill and eat, such as toxicity, venom, foul taste or smell, sharp spines, or aggressive nature. These advertising signals may take the form of conspicuous coloration, sounds, odours, or other perceivable characteristics. Aposematic signals are beneficial for both predator and prey, since both avoid potential harm.
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.
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.
The golden poison frog, also known as the golden dart frog or golden poison arrow frog, is a poison dart frog endemic to the rainforests of Colombia. The golden poison frog has become endangered due to habitat destruction within its naturally limited range. Despite its small size, this frog is among the most poisonous animals on the planet.
Epipedobates is a genus of poison dart frogs native to northern South America west of the Andes, including the western slopes. Common name phantasmal poison frogs has been suggested for the genus.
Phyllobates is a genus of poison dart frogs native to Central and South America, from Nicaragua to Colombia. There are 3 different Colombian species of Phyllobates, considered highly toxic species due to the poison they contain in the wild.
Phyllobates aurotaenia is a member of the frog family Dendrobatidae, which are found in the tropical environments of Central and South America. First described by zoologist George Albert Boulenger in 1913, P. aurotaenia is known for being the third most poisonous frog in the world. It is the smallest of the poison dart frogs in the Phyllobates genus and is endemic to the Pacific coast of Colombia.
The Aromobatidae are a family of frogs native to Central and South America. They are sometimes referred to as cryptic forest frogs or cryptic poison frogs. They are the sister taxon of the Dendrobatidae, the poison dart frogs, but are not as toxic as most dendrobatids are.
The sanguine poison frog or Zaparo's poison frog is a species of frog in the family Aromobatidae. It is native to Ecuador and Peru, where it lives in tropical rainforest habitat.
Epipedobates machalilla is a slender species of frog in the family Dendrobatidae. Endemic to West Ecuador, it lives in dry and low forests and was first described by Luis A. Coloma in 1995. The IUCN have classed it as "least concern".
The blue-bellied poison frog or bluebelly poison frog is a species of frog in the family Dendrobatidae.
Oophaga sylvatica, sometimes known as its Spanish name diablito, is a species of frog in the family Dendrobatidae found in Southwestern Colombia and Northwestern Ecuador. Its natural habitat is lowland and submontane rainforest; it can, however, survive in moderately degraded areas, at least in the more humid parts of its range. It is a very common frog in Colombia, but has disappeared from much of its Ecuadorian range. It is threatened by habitat loss (deforestation) and agricultural pollution and sometimes seen in the international pet trade.
Hyloxalus is a genus of poison dart frogs, family Dendrobatidae. The genus is distributed in Central and South America, from Panama south to Peru, along with Venezuela, Colombia, and Ecuador. They also inhabit the eastern foothills of the Andes in Bolivia to Venezuela, east to the upper Amazon Basin.
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.
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.
Ranitomeya is a genus of dart poison frogs found in Panama and South America south to Peru and Brazil, possibly into Bolivia.
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.
Anomaloglossus is a genus of frogs in the family Aromobatidae. The genus is endemic to the Guiana Shield in northern South America. It used to be placed in the family Dendrobatidae, and is still placed in that family by some sources. The name of the genus, from the Greek anomalos and glossa (=tongue), refers to the unusual tongue bearing the median lingual process, the only unambiguous phenotypic synapomorphy of this genus.