THE MANNER IN WHICH THE SPONGE CLIONA BORES IN CALCAREOUS OBJECTS
THE MANNER IN WHICH THE SPONGE CLIONA BORES IN CALCAREOUS OBJECTS
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海绵 Cliona 在钙质物体中的钻进方式
DOI：
10.1139/z58-051
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发表时间：
1958
影响因子：
1.4
通讯作者：
F. Warburton
中科院分区：
文献类型：
--
作者：
F. Warburton
利用一种新型的重组培养物，研究了贝壳和方解石晶体的钻孔情况。没有检测到游离酸，并且海绵没有将可检测量的钙放入溶液中。然而，酸作用由钻孔对碳酸钙的限制来指示。贝壳蛋白很难穿透。与基质接触的细胞形成细伪足和细丝的网状结构;方解石上蚀刻出相应的线条图案。如此标记的区域与海绵排出的碎片的大小和形状相同。这些碎片无论是来自贝壳还是方解石晶体都是一样的;它们的表面是弯曲的，但它们的边缘是锋利的。显然，细胞质细丝通过分泌微量的酸和切下的碎片进入方解石，这些碎片通过海绵薄壁组织进入流出的通道。
Boring in shells and calcite crystals was investigated, using a new type of reconstitution culture. No free acid was detected, and no detectable quantity of calcium was put in solution by the sponge. However, acid action is indicated by restriction of boring to calcium carbonate. Conchiolin is penetrated with difficulty. Cells in contact with the substratum form a reticulum of fine pseudopodia and filaments; a corresponding pattern of lines is etched into the calcite. The areas so marked out are the same size and shape as the fragments discharged by the sponge. These fragments are identical whether from shells or calcite crystals; their faces are curved but their edges sharp. Apparently the cytoplasmic filaments insinuate themselves into calcite by secreting minute amounts of acid, and undercut fragments which are carried through the sponge parenchyma to excurrent canals.