THE AQUIFEROUS SYSTEMS OF SPONGIA-OFFICINALIS AND (CLIONA-VIRIDIS (PORIFERA) BASED ON CORROSION CAST ANALYSIS

被引：8
作者：
BURLANDO, B
BAVESTRELLO, G
SARA, M
COCITO, S
机构：
[1] Istituto di Zoologia, Università di Genova, Genova, 116126
[2] Enea Crea, La Spezia, 119100
来源：
BOLLETTINO DI ZOOLOGIA | 1990年 / 57卷 / 03期
关键词：
PORIFERA; AQUIFEROUS SYSTEM; MICROCORROSION CASTS; SCANNING ELECTRON MICROSCOPY;
D O I：
10.1080/11250009009355701
中图分类号：
Q95 [动物学];
学科分类号：
071002 ;
摘要：
The three-dimensional architecture of the aquiferous systems of Spongia officinalis and Cliona viridis has been studied by corrosion cast analysis. The two species present similar multi-scale, modular canal arrangements. The incurrent systems consist of modular units with superficial small vessels, subsuperficial cavities, and ducts penetrating into the sponge body. Choanocyte chambers are distributed in clumps generated by modular, branched, small canals. Canals which drain the choanocyte chambers form an anastomosed framework which converges on large vessels leading to oscules. Some canals directly connect incurrent and excurrent systems, allowing water to bypass the choanocyte chambers. Comparison with previous sponge cast analysis of Petrosia ficiformis and Chondrosia reniformis reveals a basic anatomical design which could be widespread among demonsponges.
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页码：233 / 239
页数：7
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