No. 1311 / 1 402

Dyeing poison dart frog

Dendrobates tinctorius

名前について： The specific name tinctorius does not refer to its colours. It comes from legends of some indigenous tribes, who said they used frog poisons to make green parrot feathers grow in different colours.1

痛いだけさわらないで痛いけど、大きな害はないよ。

ヤドクガエル、ヒキガエル、イモリ

皮ふに毒食べもの：昆虫さわる・食べると毒（かむ・刺す毒ではない）

人への危険: 痛いすごく痛いこともあるけど、深刻になることはほとんどないよ。

The dyeing poison dart frog is a small, brightly marked frog from the rainforests of north-eastern South America. It is one of the largest poison dart frogs and one of the most colourful, with more than 30 recognised colour forms. Its skin contains toxins, so it is a frog to admire from a distance.1

「かむ・刺す毒」？「さわる・食べると毒」？「かむ・刺す毒」の動物は、かんだり刺したりして毒を注入するよ。「さわる・食べると毒」の動物は、さわったり食べたりすると害があるよ。これは「さわる・食べると毒」の動物。

すんでいる場所

Eastern Guiana Shield: French Guiana, Guyana, Suriname and Brazil1

南アメリカ

ホーム

It lives in patches of tropical primary rainforest, mostly in hilly or upland areas, at altitudes up to 600 m, though some populations are found at sea level. It is often found in canopy gaps, where trees have fallen, and it uses water-filled spaces on fallen trees for its tadpoles.1

長さ

3.5 cmから7 cm (1.4 inから2.8 in)1

最高速度

時速約3.9 km（時速2.4マイル）

陸で, おおまかな予想

何を食べるの？

It eats small arthropods, mainly ants and mites. It mostly stays on the ground, where catching prey is easier, though it sometimes climbs trees.1

Dyeing poison dart frogの写真 — Dyeing poison dart frog。写真：Yves Bas。 CC BY 4.0, iNaturalist.

見分け方

The body is mostly black, with an irregular pattern of yellow or whitish stripes along the back, upper flanks and head.1
The lower flanks, belly and throat have irregular blue stripes, and the legs are blue with small black specks.1
The blue ranges from pale sky blue to royal, cobalt or navy blue, and some colour forms are mostly yellow, mostly blue or mostly whitish.1
Adults usually measure around 5 cm from snout to vent. Females have circular toe discs and arched backs, while males are smaller and more slender, with heart-shaped toe discs and curved backs.1

毒パワー

皮ふに毒

皮ふに毒があるよ。さわったり、なめたり、食べたりすると危険。

その毒（さわる・食べると毒）はどうなるの？

Its skin secretions contain alkaloids, which are toxic chemicals that interfere with nerve and muscle tissue. They can cause pain, cramping and stiffness, and in severe cases locomotor difficulties, convulsions, paralysis or death. In a reported case in Brazil, two men who handled the frog felt numbness within about 20 minutes, and the symptoms had gone after 40 minutes.1

人にとってどれくらい危険？

人への危険: 痛いすごく痛いこともあるけど、深刻になることはほとんどないよ。

The frog is toxic if eaten, and its skin toxins can affect anyone who handles it. In a reported case, two adult male photographers in the Brazilian Amazon both had mild numbness that passed within 40 minutes. Their symptoms could have been worse with longer contact or if there had been a wound where they touched the frog.1