...It is found in the southern part of Hokkaido to Taiwan and in the southern part of the Korean Peninsula, where it inhabits rivers, lakes, and marshes, but there is considerable regional variation. The shell is long and slender, about 3 cm high and 1.2 cm wide, but the local type of giant river snail found in Fukui Prefecture reaches 5 cm high and 2 cm wide. The top of the shell is eroded and lost, and usually only the last 3 to 5 layers remain. ... *Some of the terminology that refers to "Giant River Snail" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…北海道南部から台湾まで,また朝鮮半島南部に分布し,河川,湖沼などにすむが,地方的に変異も著しい。殻は細長くて,高さ3cm,太さ1.2cmくらいであるが,福井県に分布する地方型オオカワニナは高さ5cm,太さ2cmに達する。殻の頂部はおかされて失われ,通常最後の3~5層くらいになっていることが多い。… ※「オオカワニナ」について言及している用語解説の一部を掲載しています。 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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