作　　者： ; ;

机构地区： 西南农业大学水产学院水产科学系

出　　处： 《西南农业大学学报（自然科学版）》 1997年第1期36-46,共11页

摘　　要： 】对白鲟骨骼系统的研究表明，上颌是由骨化良好的方轭骨在口角处将腭方骨、腭方软骨及上颌骨连接所成。下颌由齿骨、前关节骨及米克尔氏软骨组成。肩带骨骼除上匙骨、后匙骨、匙骨、肩胛部和乌喙部软骨外，还存在锁骨和间锁骨。腰带退化，腹鳍支鳍骨由９块鳍基软骨组成。附肢骨骼的辐状软骨已部分骨化。 In a study of the skeletal system of Psephurus gladius, we observed some new bone elements and also revised some confusion of terminology. It was observed in the study that the upper jaw was formed by the palato quadrate, plato quadrate cartilge, maxilla and well ossified quadratojual which attachs the posterior ends of the other bones. The results of the study also showed that the lower jaw consisted of dentary, prearticular and Meckels cartilage. Except for supra cleithrum, post cleithrum and cleithrum, the ossified part of the pectoral fin girdle also included clavicle and inter clavicle. The pelvic girdle degenerated, the pelvic fin supports consisted of nine basipterygial cartilages. The appendicular radial cartilages had ossified partly.

关 键 词： 白鲟 骨骼 形态特征

领　　域： [生物学]