Phyllobates aurotaenia

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Phyllobates aurotaenia

Least Concern  (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Dendrobatidae
Genus: Phyllobates
Species:
P. aurotaenia
Binomial name
Phyllobates aurotaenia
(Boulenger, 1913)
Synonyms[2]

Dendrobates aurotaenia Boulenger, 1913

Phyllobates aurotaenia is a member of the frog family

poison dart frogs in the Phyllobates genus and is endemic to the Pacific coast of Colombia.[4]

Wild specimens store batrachotoxin in glands in their skin, which can be fatal to humans in doses as small as 100 µg.[5] The unique lethality of their poison is a trait often exploited by certain Native American peoples of Colombia for hunting.[4] The members of this species are characterized by: black dorsums, sometimes covered by orange suffusions; green, yellow, orange, or brownish gold dorsolateral stripes; and black abdomens with blue or green dots. The name Phyllobates aurotaenia is currently applied to two forms: a smaller, large-stripe form and a larger, small-stripe form. These forms are separated by a ravine yet retain the ability to interbreed.[4] The number and range of P. aurotaenia is declining, primarily due to loss of habitat, and is currently classified as

IUCN.[1]

Range and habitat

P. aurotaenia is found in the wet forests of the

Choco region of Colombia, west of the Andes, in the Atrato and San Juan drainages.[4] It lives on the ground of humid lowland and submontane forests, typically between altitudes of 60 and 520 meters, and is found in primary and secondary forest but not in degraded areas.[1][4]

As a vivarium subject, this frog is an active animal that will make use of vertical space. Kokoe dart frogs are highly social frogs that require high humidity, cool temperatures, and larger prey items than many dart frogs.

Mating

P. aurotaenia usually performs

leaf litter.[4] Their calls have been described as a loud, bird-like whirring twitter that consists of rapidly repeated notes, repeated at irregular intervals of several seconds and lasting up to 45 seconds.[4]

These frogs do not engage in wrestling behavior among each other as do many other dart frogs. Males vying for a female will face off, calling loudly until one backs down. Unlike the other Phyllobates species, these frogs will not breed in coconut shells; they prefer to lay their eggs inside a narrow tube (small film canisters or nut pods) on the ground. Female P. aurotaenia lay their clutch of eggs, averaging 15-20, in leaf-litter and the male takes the tadpoles to slow-flowing water after the eggs hatch.[1]

Toxicity

P. aurotaenia is one of the most lethal species of the

sodium ion channels within nerve and muscle cells.[5] This prevents repolarization of the cell membrane and halts further signaling, resulting in paralysis and often death as any affected muscle becomes locked in the contracted state. In order to avoid self-intoxication the frogs have developed modified sodium channels to prevent the binding of batrachotoxin.[8]

Although wild frogs are extremely deadly, frogs raised in captivity are generally non-toxic.

millipedes, and flies as well as the unique composition of leaf litter on the forest floor.[9][10]

Value

P. aurotaenia is one of three species known to be used for poisoning darts; the others being P. terribilis and P. bicolor.

San Juan drainage region of Colombia attract and capture these species by imitating their calls.[4] Because they release their poison only under stress, the poison is extracted by piercing the frogs through the mouth with a wooden skewer and holding them over a fire.[4] The Chocóan people then coat their darts by rubbing the darts across the backs of the frogs.[4]

References

  1. ^
    doi:10.2305/IUCN.UK.2017-2.RLTS.T55261A85887593.en
    . Retrieved 18 November 2021.
  2. ^ a b Frost, Darrel R. (2017). "Phyllobates aurotaenia (Boulenger, 1913)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 27 June 2017.
  3. ^ George, A.B. (1913). "On a collection of Batrachians and reptiles made by Dr. HGF Spurrell, FZS, in the Choco, Colombia". Proceedings of the Zoological Society of London. 48 (4): 1019–1038.
  4. ^ a b c d e f g h i j Silverstone, PA. (1976). "A revision of the poison arrow frogs of the genus Phyllobates Bibron in Sagra (Family Dendrobatidae)". Natural History Museum of Los Angeles County Science Bulletin. 27: 1–53.
  5. ^
    PMID 4329451
    .
  6. PMID 6836257
    .
  7. PMID 3321567
    .
  8. ^ Daly, J.W.; Garraffo, H.M.; Myers, C.W. (1997). "The Origin of Frog Skin Alkaloids: An Enigma?". Pharmaceutical News. 4 (4): 9–14.
  9. ^
    S2CID 30642213
    .
  10. ^
    S2CID 34040679
    .
  11. ^ Myers, C.W.; Daly, J.W.; Malkin, B. (1978). "A dangerously toxic new frog (Phyllobates) used by Emberá Indians of Western Colombia, with discussion of blowgun fabrication and dart poisoning". Bulletin of the American Museum of Natural History. 161: 307–366.
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