...They feed on plankton and suspended organic matter, and spawn in the summer. The shell of the Japanese clam Corbicula leana (illustration) can reach 4 cm in length, 3.5 cm in height, and 2 cm in width, but is usually about half that. When young, the shell is yellowish-green and has a weak luster, but as it grows, it becomes black with charring. *Some of the terminology that mentions "Corbicula leana" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…プランクトンや浮遊有機物を食べ,夏に産卵する。 マシジミ(真蜆)Corbicula leana(イラスト)は殻の長さ4cm,高さ3.5cm,幅2cmになるものもあるが,通常はその半分くらい。殻は幼貝のときは黄緑色で光沢は弱く,成長すると黒い焦げめができる。… ※「Corbicula leana」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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