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寄居蟹的壳从哪里来
更新时间: 2020-10-22 00:00:00  

海蜗牛留下来的壳。

寄居蟹的壳不是它自生的,是捡来的其他螺类死亡后留下来的壳。作用是保护自己,当寄居蟹长大后旧壳就不合适了就要更换新的壳。

寄居蟹以螺壳为寄体,平时负壳爬行,受到惊吓会立即将身体缩入螺壳内。随着蟹体的逐渐长大,寄居蟹会寻找新的壳体换壳,已知的寄居蟹品种有几十种,在中国沿海较常见的品种有方腕寄居蟹和栉螯寄居蟹。寄居蟹多产于黄海及南方海域的海岸边,在沙滩和海边的岩石缝里容易发现,有时在竹子节、穗椰子壳、珊瑚、海绵等其它地方也能看到这种有"清道夫"之称的杂食性动物。

关键词: 寄居蟹 哪里

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