A frog of the Rhacophoridae family with unusual spawning habits (illustration). Distributed in Honshu, Shikoku, parts of Kyushu, and Sado Island, it lives in forests from low to mountainous areas. It is arboreal and has well-developed suckers on each finger of its limbs. It is about 5-9 cm long, with the female being larger. The dorsal surface of the body is green with varying shades, and in some areas there are many individuals with scattered reddish-brown markings. The spawning season varies from April to July depending on the region, is relatively long, and takes place in still water such as ponds, rice fields, and marshes surrounded by trees. At night, attracted by the male's cries, the female enters the water, and eventually both sexes begin climbing up branches overhanging the water's edge. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
アオガエル科の風変りな産卵習性をもつカエル(イラスト)。本州,四国および九州の一部,佐渡島に分布し,低山地から山地にかけての森林にすみ,樹上生で四肢の各指には吸盤が発達する。体長約5~9cmで雌のほうが大きい。体背面は緑色で濃淡に変化し,赤褐色の斑紋が散在する個体が多い地域もある。産卵期は4~7月ころで地方によって異なり,期間は比較的長く,場所は木に囲まれた池沼,水田,湿原などの止水。夜間,雄の鳴声に誘われて雌もともに水に入り,やがて水辺に張り出した枝に雌雄が登り始める。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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