Selective incorporation of foreign material in Chondrosia reniformis (Porifera, Demospongiae)
Selective incorporation of foreign material in Chondrosia reniformis (Porifera, Demospongiae)
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DOI：
10.1080/11250009609356136
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发表时间：
1996-01-01
影响因子：
--
通讯作者：
Cortesogno, L
中科院分区：
文献类型：
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作者：
Bavestrello, G;Cerrano, C;Cortesogno, L
为了建造它们的骨骼，几种Demospongiae利用外来物质，如沙粒，海绵骨针，硅藻泥和其他颗粒。尽管人们对选择机制进行了广泛的辩论，但没有对环境沉降和颗粒掺入进行过比较研究。这项工作的目的是比较环境沉积，研究陷阱，与体内的共同demosponge，肾状软骨，收集沿着深度断面上的波托菲诺岬（利古里亚海，意大利）的垂直岩石悬崖上发现的颗粒。矿物学分析证明了对掺入物质质量的主动选择，对硅质颗粒具有很强的亲和力。由海绵在不同深度处并入的颗粒的尺寸类似于水柱中的精细无机部分的尺寸。这种现象涉及两种机制：（1）与海绵粘液表面相关的物理吸收和（2）软骨病典型的石英颗粒上的蚀刻作用。
For the construction of their skeleton, several species of Demospongiae utilise foreign material such as sand grains, sponge spicules, diatom oozes and other particles. Even though selection mechanisms were widely debated, no investigation comparing environmental sedimentation and particle incorporation had been carried out. The aim of this work is to compare the environmental sedimentation, studied by traps, with the particles found inside the body of the common demosponge, Chondrosia reniformis, collected along a depth transect on the vertical rocky cliff of the Portofino Promontory (Ligurian Sea, Italy). The mineralogical analysis evidences an active choice regarding the quality of the incorporated matter, with a strong affinity for siliceous particles. The size of the particles incorporated by the sponges at different depths is similar to that of the fine inorganic fraction in the water column. This phenomenon involves two mechanisms: (1) a physical uptake related to the mucous surface of the sponge and (2) the etching action on quartz particles typical of Chondrosia.