本文从形态、细胞和分子水平对分类上存在混淆的云纹石斑鱼(Epinephelusmoara)和褐石斑鱼(E.bruneus)进行了比较研究，以澄清它们在分类上的疑问、弄清其遗传背景并筛选可以鉴别两者的特异性分子标记，为云纹石斑鱼和褐石斑鱼的理论研究、生产实践及种质资源的保护提供重要资料。主要结果如下： 1.2种石斑鱼的体形和体表横带等外部形态特征非常相似，但体表斑纹不同，Fisher逐步判别法表明两者在背鳍鳍条、鳃耙和幽门盲囊等方面差异达到极显著水平(p<0.001)。两者骨骼系统均由脑颅、咽颅、脊柱、肋骨和附肢骨骼组成，主轴和附肢骨骼的形态结构基本相同，但在脑颅的眶前骨和眶后骨、咽颅的...Whether Epinephelus moara and E. bruneus, with quite similarity in external characters and distribution, belong to one species or not, has being existed the argument and confusion for a long time. To clarify the questions in classification, study and ratify the genetic status and provide specific molecular markers identifying the two grouper species, comparative studies were investigated based on ...学位：理学博士院系专业：海洋与环境学院海洋学系_海洋生物学学号：2112005140317
