Embryological study of scolopendromorph centipedes : A comparative embryological analysis on the affinity of myriapods and chelicerates

节肢动物是动物中物种数量最多的一门，在动物系统发育中，最有趣和最吸引人的问题之一是节肢动物的基本规划和进化的重建。“多足类”不仅在节肢动物中有许多祖先特征，而且它们的组内亲缘关系还没有确定下来。因此，阐明多足动物的基础计划和形态发生对重建节肢动物的基础计划和进化具有重要意义。本研究对隶属于多足动物最基本支系的唇足纲鳞足类Rubiginosus L.Koch的发育过程进行了详细的研究和描述，将胚胎发育划分为9个阶段，将胚胎发育后的阶段划分为5个阶段。从形态和进化的角度对这些观察结果进行了论证。结果表明，唇形目动物在许多方面与海龟纲动物的胚胎学计划相同，这是第一次在形态上的贡献，因为它们之间的相似之处足以推测它们的亲缘关系。也有人认为，剑足类代表了节肢动物中最基本的Dade，以重建节肢动物的底图。所获得的知识已发表在一些论文中，包括一篇将提交给《形态学》杂志的综合文章。在本研究过程中，我还对昆虫进行了一些胚胎学研究，这有助于扩大本研究的讨论范围。

In the animal phylogeny, one of the most interesting and attractive issues is the reconstruction of the groundplan and evolution of the Arthropod, which are the phylum largest in species number in animals. "Myriapoda" not only share many ancestral features in arthropods, but also their intragroup affinities have not been settled yet. Hence, it is the most significant for the reconstruction of the groundplan and evolution of arthropods to elucidate the myriapods in groundplan and morphogenesis.In the present study, the developmental process of Scolopocryptops rubiginosus L.Koch of Chilopoda, which are affiliated to the most basal clade in the myriapods, was examined and described in detail, the embryonic development being divided into nine stages and the postembryonic ones up to the third instar larva into five stages. The observations were argued in light of morphology and evolution.It was revealed that Chilopoda share the embryological plans with Chelicerata in many aspects, this being the first morphological contribution referring to the close resemblances good enough to postulate their affinity. It was also argued that Chilopoda represent the most basal dade with in Arthropod, to reconstruct the groundplan of Arthropoda.The knowledge obtained has been published in some papers, including a comprehensive article to be submitted to Journal of Morphology. In the course of the present study, I had conducted some embryological studies on insects as well, this being useful in extending the discussion in the present study.