Blue poison dart frog

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Blue poison dart frog
Dendrobates azureus qtl1.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Dendrobatidae
Genus: Dendrobates
Species:
Subspecies:
D. t. "azureus"
Trinomial name
Dendrobates tinctorius "azureus"
(Hoogmoed, 1969)

The blue poison dart frog or blue poison arrow frog (Dendrobates tinctorius "azureus") is a poison dart frog found in the "forest islands" surrounded by the Sipaliwini Savanna in southern Suriname. Its indigenous Tiriyo 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. [1] [2] [3] [4] 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". [3]

Contents

Description

D. tinctorius "azureus" frogs in captivity 2009-04-05Dendrobates tinctorius azureus039.jpg
D. tinctorius "azureus" frogs in captivity

The blue poison dart frog is a medium-sized poison dart frog that weighs about 8 g (0.28 oz) and grows to 3.0–4.5 cm (1.2–1.8 in) in snout–vent length. Females are larger and on average about half a centimetre longer than males, but males have larger toes. Its bright blue skin, usually darker around its limbs and stomach, serves as a warning to predators. The glands of poisonous alkaloids located in the skin serve as a defence mechanism to potential predators. The black spots are unique to each frog, enabling individuals to be identified. In addition to differing in color, blue poison dart frogs also tend to have a distinctive hunch-backed posture and a relatively smaller, more oval (less round) tympanum than in other variants of dyeing poison dart frog. [2] Each foot has four toes, which each have a flattened tip with a suction cup pad used for gripping. The tips of the toes in females are round, while males have heart-shaped tips.

Their tadpoles have a long tail, about 6 mm, with a total length of around 10 mm. They lack legs and have gills instead of lungs.

Behavior

2009-03-29Dendrobates tinctorius azureus106.jpg

The blue poison dart frog is a terrestrial animal, but, as an amphibian, stays close to water sources. These frogs spend most of their active hours hopping around in short leaps, looking for insects.[ citation needed ] They are very territorial and aggressive, towards both their own species and others, much like other poison dart frogs. To ward off intruders, they use a series of calls, chases, and wrestling.

Although poison dart frogs are known for their skin toxins used on the tips of hunting-arrows of natives, in reality only the species of the genus Phyllobates are used in this manner. In nature, poison dart frogs consume specific insects, such as small beetles or ants, which contain formic acid (among other alkaloids)[ HCOOH is not an alkaloid. ], which the frogs are able to metabolize and retain as a defense mechanism. Thus, all captive and captive-bred dart frog specimens, including wild-collected individuals, lose their toxicity as a result of a change in diet.

Reproduction

The blue poison dart frog breeds seasonally, usually during February or March when the weather is rainy. To find mates, the males sit on a rock and produce quiet calls, which the females follow to track down the males. The females then physically fight over a male. The male takes the female to a quiet place by the water, which becomes the site of the egg-laying. Fertilization occurs externally; once the eggs are laid, the male covers them in his sperm.

Between five and ten offspring are produced at each mating. Eggs are laid in the male's territory, which he defends. The male takes care of the eggs, sometimes joined by the female. The eggs hatch after 14 to 18 days, and after 10 to 12 weeks the tadpoles are fully mature. Both sexes reach sexual maturity at two years of age. The expected lifespan of D. tinctorius "azureus" is between 4 and 6 years in the wild and about 10 years in captivity.

Feeding

The blue poison dart frog feeds on fire ants and insects which may have poisonous chemical which makes the blue poison dart frog poisonous. Other than that it also feeds on beetles, flies, mites, spiders, termites, maggots, and caterpillars.

Captive care

In captivity, like most captive dart frogs, they eat a staple diet of fruit flies, pinhead crickets, rice flour beetle larvae, isopods, and springtails.

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">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">History of dendrobatid frogkeeping</span>

Poison dart frogs have been regularly maintained and bred in captivity since the 1970s. The International Zoo Yearbook reported in 1977 that Stuttgart Zoo bred Phyllobates bicolor and Zoo Basel bred Dendrobates auratus.

<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.

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

The golden poison frog, also known as the golden dart frog or golden poison arrow frog, is a poison dart frog endemic from 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 considered to be the most poisonous extant animal species on the planet.

<i>Phyllobates bicolor</i> Species of amphibian

Phyllobates bicolor, or more commonly referred to as the black-legged poison dart frog, is the world's second-most toxic dart frog. Under the genus Phyllobates, this organism is often mistaken as Phyllobates terribilis, the golden poison frog, as both are morphologically similar. However, Phyllobatesbicolor is identifiable by the yellow or orange body and black or dark blue forelimbs and hindlegs, hence the name black-legged dart frog. Phyllobates bicolor are commonly found in tropical forests of the Chocó region of Colombia. The diurnal frogs live along the rainforest ground near streams or puddles that form. Notably, P. bicolor is a member of the family Dendrobatidae, or poison dart frog. P. bicolor, along with the rest of the Phyllobates species, produce a neurotoxin known as a batrachotoxin that inhibits specific transmembrane channels in cells. Due to this highly deadly toxin that the frogs secrete, many indigenous groups of the Colombian rainforest have extracted the toxins to create poison tipped darts used for hunting. During the breeding period, P. bicolor emits high pitched single notes as a mating call. As in all poison dart frogs, it is common for the father of tadpoles to carry the offspring on his back until they reach a suitable location for the tadpoles to develop. P. bicolor is an endangered species according to the IUCN red list. Currently, deforestation, habitat loss, and pollution pose the biggest threat to the species. Limited conservation efforts have been attempted to prevent further damage to the species. Despite this, there are still institutions such as the Baltimore National Aquarium in Baltimore, Maryland and the Tatamá National Natural Park in Colombia that are engaged in P. bicolor conservation efforts such as captive breeding.

<i>Phyllobates aurotaenia</i> Species of amphibian

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.

<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.

<i>Adelphobates galactonotus</i> Species of amphibian

Adelphobates galactonotus is a species of poison dart frog. It is endemic to the rainforest of the southern Amazon Basin in Brazil. Its natural habitats are tropical moist lowland forests. The eggs are laid on the ground, but the tadpoles are carried to temporary pools. Though it remains widespread and locally common, it is threatened by habitat loss and has already disappeared from some localities due to deforestation and flooding caused by dams. The species is relatively common in captivity and regularly bred, but the wild populations are still at risk from illegal collection.

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

Lehmann's poison frog or the red-banded poison frog is a species of frogs in the family Dendrobatidae endemic to a small part of western Colombia. Its natural habitats are submontane tropical rainforests. It is threatened by habitat loss and collection for the pet trade, and the IUCN lists it as being "critically endangered". It was named after Colombian conservation biologist Federico Carlos Lehmann.

<i>Oophaga sylvatica</i> Species of amphibian

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.

<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">Golfodulcean poison frog</span> Species of amphibian

The Golfodulcean poison frog or Golfodulcean poison-arrow frog is a species of frog in the family Dendrobatidae endemic to Costa Rica.

<span class="mw-page-title-main">Climbing mantella</span> Species of frog

The climbing mantella is a species of diurnal poison frog of the genus Mantella that resides in the subtropical regions of northeast Madagascar. Although it spends a significant amount of time in trees or bamboo forests, this frog species is not fully arboreal and actively seeks areas with a water source.

<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.

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

The red-backed poison frog is a species of frog in the family Dendrobatidae. It is an arboreal insectivorous species, and is the second-most poisonous species in the genus, after R. variabilis. Like many species of small, poisonous frogs native to South America, it is grouped with the poison dart frogs, and is a moderately toxic species, containing poison capable of causing serious injury to humans, and death in animals such as chickens. R. reticulata is native to the Amazon rainforest in Peru and Ecuador.

<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.

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

Ranitomeya sirensis or the Sira poison frog is a species of poison dart frog found in the Amazonian rainforests of northern Bolivia, westernmost Brazil (Acre), and eastern Peru.

References

  1. 1 2 Philippe Gaucher; Ross MacCulloch (2010). "Dendrobates tinctorius". IUCN Red List of Threatened Species . 2010: e.T55204A11265402. doi: 10.2305/IUCN.UK.2010-2.RLTS.T55204A11265402.en .
  2. 1 2 Wollenberg, Katharina C.; Veith, Michael; Noonan, Brice P.; Lötters, Stefan (2006). Quattro, J. M (ed.). "Polymorphism Versus Species Richness—systematics of Large Dendrobates from the Eastern Guiana Shield (Amphibia: Dendrobatidae)". Copeia. 6 (4): 623. doi:10.1643/0045-8511(2006)6[623:PVSROL]2.0.CO;2. S2CID   51861356.
  3. 1 2 d'Orgeix, C.A.; Hardy, D.; Witiak, S.M.; Robinson, L.R.; Jairam, R. (2019). "The Blue Dyeing Poison-Dart Frog, Dendrobates tinctorius (Dendrobates azureus, Hoogmoed 1969): extant in Suriname based on a rapid survey". Amphibian & Reptile Conservation. 13 (2): 259–264.
  4. Hoogmoed, M.S. (2019). "Unpublished population data of Dendrobates azureus Hoogmoed 1969 obtained in 1968 and 1970, and its historical and current taxonomic status". Amphibian & Reptile Conservation. 13 (2): 95–101.

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