西伯利亚鲟幼鱼骨骼系统解剖研究

THE ANATOMY OF THE SKELETAL SYSTEM OF ACIPENSER BAERI JUVENILE

为了解西伯利亚鲟(Acipenser baeri)骨骼系统的形态特征,采用传统的解剖法和透明骨法对西伯利亚鲟幼鱼进行解剖观察,为西伯利亚鲟在形态学和分类学的研究提供基础资料。结果表明:西伯利亚鲟幼鱼骨骼系统由主轴骨骼和附肢骨骼两部分构成,主轴骨骼包括头骨、脊柱和肋骨,附肢骨骼由鳍条、支鳍骨骼和带骨构成。对比分析发现,西伯利亚鲟和施氏鲟骨骼系统的组成与构造较为相似,其原因可能是其对高纬度低水温环境长期适应的结果。

To investigate the structure characteristics of skeleton of Acipenser baeri,the conventional method was used to study the skeletal system of A.baeri Brandt mainly focusing on morphology and taxonomy.The results showed that the skeletal system of A.baeri Brandt juvenile consists of two parts,axial skeleton and appendicular skeleton.The axial skeleton of A.baeri was composed of skull,vertebral column and ribs.The appendicular skeleton of A.baeri included fin-ray,pterygiophore and girdle.We found that the skeletal system of A.baeri Brandt was more similar to Acipenser schrencki Brandt than other sturgeons,which probably explained by the long-term life adaptation to the high latitude and low temperature environment.