Jimugurigaeru - Jimugurigaeru

Japanese: ジムグリガエル - じむぐりがえる
Jimugurigaeru - Jimugurigaeru

A frog of the family Hylidae in the order Anura in the class Amphibians. It is found from around the Yangtze River in China to the Korean Peninsula. It is about 4 centimeters long. Its back is olive-colored with irregular dark spots scattered throughout. Its underside is yellow with a purplish tinge. It has a stocky body and small eyes. Its hind legs are short, but the inner ridges of the soles of its feet are highly developed, which it uses to burrow underground. It lays eggs in temporary puddles on nights of heavy rain in the summer. The eggs float separately on the water surface. Males have a loud croak. Embryos develop quickly, and metamorphosis takes about half a month. This genus (the Oriental frog) is widely distributed in Southeast Asia, with this species marking the northern limit.

[Mitsuru Kuramoto]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

両生綱無尾目ヒメアマガエル科のカエル。中国の揚子江(ようすこう)付近から朝鮮半島にかけて分布する。体長約4センチメートル。背面はオリーブ色で、不規則な暗斑(あんはん)が散在する。腹面は紫を帯びた黄色。ずんぐりした体形で目は小さい。後肢は短いが、足裏の内側の隆起が大きく発達し、これを用いて地中に潜る。夏期の大雨の夜に一時的な水たまりに産卵する。卵はばらばらに水面に浮く。雄の鳴き声は大きい。胚(はい)の発生は速く、半月ほどで変態する。この属(ジムグリガエル属)は東南アジアに広く分布し、本種の分布が北限である。

[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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