Sponge burrowing: Fine structure of Cliona lampa penetrating calcareous substrata
Sponge burrowing: Fine structure of Cliona lampa penetrating calcareous substrata
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海绵洞穴：Cliona lampa 穿透钙质基质的精细结构
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
G. Rieger
中科院分区：
文献类型：
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作者：
K. Rützler;G. Rieger
Cliona Lampa Laubenfels(Porifera：Hadromerida)是百慕大一种常见的穴居生物，它被用来研究海绵对钙质物体的渗透方法。为了超越先前作者所获得的结果，除了光学显微镜观察之外，还使用了电子显微镜技术。在扫描电子显微镜的基础上，描述了洞穴模式、组织-基质界面的精细结构以及海绵活动去除的钙质碎片。通过光镜和透射电子显微镜对细胞类型和细胞学特征进行鉴定。原始细胞起源的一种细胞类型被证明；它通过丝孔延伸和蚀刻分泌物的方式雕刻出碳酸钙(和螺纹石)碎片。在这个过程中，细胞经历质壁分解；底物碎片通过呼出管系统排出。据计算，只有2%到3%的被侵蚀物质在溶液中被去除。
Cliona lampa Laubenfels (Porifera: Hadromerida), a common burrowing organism in Bermuda, has been used to study the method of sponge penetration into calcareous objects. To progress beyond the results obtained by previous authors, electron-microscope techniques, in addition to light-microscope observations, were employed. Burrowing patterns, fine structure of the tissue-substratum interface and of calcareous fragments removed by sponge activity are described on the basis of scanning electron microscopy. Cell types and cytological features have been identified by light and transmission electron microscope. One cell type of archeocyte origin is demonstrated; it carves out chips of calcium carbonate (and conchiolin) by means of filopodial extensions and etching secretions. The cells undergo plasmolysis during this process; the substratum chips are expelled through the exhalent canal system. It is calculated that only 2 to 3% of the eroded material is removed in solution.