A frog of the family Upside-Down Frogs in the order Anura in the class Amphibians. It is found mainly in Brazil and Argentina. It is aquatic, preferring still water with lots of aquatic plants, and eating small animals on the bottom. It is around 6 centimeters long. Its body surface is dark green, and its hind legs are mottled with yellow and black. Its skin is smooth, and its hind legs have large, well-developed webbed feet. Its eggs are laid in foam-like masses among aquatic plants, and the tadpoles that grow into them are much larger than adults, reaching a total length of up to 25 centimeters. The baby frogs are bigger than the parents, hence the name Upside-Down Frogs. The family Upside-Down Frogs is endemic to South America, and five species are known in two genera. [Mitsuru Kuramoto] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
両生綱無尾目アベコベガエル科のカエル。ブラジル、アルゼンチンを中心に分布。水中性で、水草の多い止水域を好み、水底の小動物を食べる。体長6センチメートル内外。体表は暗緑色で、後肢は黄色と黒色のまだら模様。皮膚は滑らかで、後肢の水かきは大きく発達している。卵は泡状の卵塊として水草の間に産み付けられ、成長したオタマジャクシは成体よりはるかに大きく全長25センチメートルにも達する。親より子供のほうが大きいのでアベコベガエルの名がある。アベコベガエル科は南アメリカ固有の科で、2属5種が知られる。 [倉本 満] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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