| 摘要: |
| 研究发现了采集于南海北部湾和琼州海峡的白银拟族海绵新记录种。该种是丛生薄管状，具有很多分叉的树枝状结构，同一根独立的管粗细均匀。标本在酒精中的颜色为淡褐色,出水口处颜色稍浅。海绵坚硬且脆度大，一层大二辐骨针在海绵表面构成致密的骨架结构，有少量骨针的辐会伸出表面。骨针分为三类：大二辐骨针和小二辐骨针；成对辐与无对生辐长度及形态差异非常明显的四种羽状三辐骨针；基辐与顶辐差异不明显且均与三辐骨针的辐相似的四辐骨针，这三种骨针按照固定的方式组合在一起构成骨架结构。水沟系是双沟型。领细胞室没有关节结构。 |
| 关键词: 南海 多孔动物门 新记录种 分类学 |
| DOI： |
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附件 |
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| A NEW RECORD OF CALCAREA IN THE SOUTH CHINA SEA--- Uteopsis argentea (Poléjaeff, 1883) |
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chu yanling, gong lin, li xinzheng
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Institute of Oceanology, Chinese Academy of Sciences
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| Abstract: |
| A new record of Uteopsis argentea (Poléjaeff, 1883) collected in the Beibu Gulf and Qiongzhou Strait of the South China Sea is described here. This sponge has arborescent structure made of many tubes, every tube has uniform thickness. The sponge shows light brown in alcohol, while the oscula is slightly lighter. The texture is hard and brittle, large diactines cover the surface formed a dense and rigid structure, a small number of small diactines protrude out of the surface. This sponge has three kinds of spiculation: ⑴diactines: large diactines and small diactines; ⑵triactines: sagittal, according to the length of paired actines and unpaired actines, triactines can be divided into four types; ⑶tetractines: sagittal, apical actines and basal actines similar to the actines of triactines. All these spiculation regularly assembled together forming skeleton. The aquiferous system is syconoid. Inarticulated choanoskeleton. |
| Key words: the South China Sea porifera new record taxonomy |