Buddenbrockia is a Cnidarian worm
Buddenbrockia is a Cnidarian worm
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DOI：
10.1126/science.1142024
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发表时间：
2007-07-06
期刊：
影响因子：
56.9
通讯作者：
Holland, Peter W. H.
中科院分区：
文献类型：
--
作者：
Jimenez-Guri, Eva;Philippe, Herve;Holland, Peter W. H.
在动物界中，一个主要的进化分化发生在所谓的径向对称动物（包括刺胞动物）和两侧对称动物（包括所有蠕虫门）之间。Buddenbrockia plumatellae是一种活跃的肌肉寄生虫，属于粘虫门，一组形态简化的显微镜内寄生虫，已被证明很难进行遗传学定位。多个蛋白质编码基因的系统发育分析表明，Buddenbrockia是一个刺胞动物。这种活跃的肌肉蠕虫增加了刺胞动物身体计划的多样性，并表明肌肉，蠕虫状的形式可以在没有明显的双边对称性的情况下进化。
A major evolutionary divide occurs in the animal kingdom between the so-called radially symmetric animals, which includes the cnidarians, and the bilaterally symmetric animals, which includes all worm phyla. Buddenbrockia plumatellae is an active, muscular, parasitic worm that belongs to the phylum Myxozoa, a group of morphologically simplified microscopic endoparasites that has proved difficult to place phylogenetically. Phylogenetic analyses of multiple protein-coding genes demonstrate that Buddenbrockia is a cnidarian. This active muscular worm increases the known diversity in cnidarian body plans and demonstrates that a muscular, wormlike form can evolve in the absence of overt bilateral symmetry.