ULTRASTRUCTURE AND ELECTRON SPECTROSCOPIC DIFFRACTION ANALYSIS OF THE STERNAL CALCIUM DEPOSITS OF PORCELLIO SCABER LATR (ISOPODA, CRUSTACEA)
ULTRASTRUCTURE AND ELECTRON SPECTROSCOPIC DIFFRACTION ANALYSIS OF THE STERNAL CALCIUM DEPOSITS OF PORCELLIO SCABER LATR (ISOPODA, CRUSTACEA)
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DOI：
10.1006/jsbi.1994.1012
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发表时间：
1994-03-01
影响因子：
3
通讯作者：
ZIEGLER, A
中科院分区：
文献类型：
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作者：
ZIEGLER, A
陆生等足动物后半角质层蜕皮后，前4个胸骨前板的钙沉积必须迅速动员起来。利用扫描电子显微镜、能量过滤透射电子显微镜和能谱电子衍射分析对沉积物的结构形态进行了研究。沉积物由直径0.3至1.7 μ m的球体构成的不透明区域和玻璃状半透明层组成。这两部分都由有机基质和无定形碳酸钙化合物组成。碳酸钙以许多小球体和无定形的形式沉积，可能有助于其快速动员。(C) 1994学术出版社，Inc.
Calcium deposits of the first four anterior sternal plates of the terrestrial isopod Porcellio scaber must be quickly mobilized after ecdysis of the posterior half of the cuticula. The structural configuration of these deposits was examined by scanning electron microscopy, energy filtered transmission electron microscopy, and energy spectroscopic electron diffraction analysis. The deposits consist of an opaque region built by spherules of diameters varying from 0.3 to 1.7 mu m and a translucent layer glassy in appearance. Both parts are composed of an organic matrix and an amorphous calcium carbonate compound. The deposition of calcium carbonate in numerous small spherules and in an amorphous form probably facilitates its quick mobilization. (C) 1994 Academic Press, Inc.