曼氏无针乌贼(Sepiella maindroni)脑显微结构及视腺超微结构观察  

BRAIN MICROSTRUCTURE AND OPTIC GLAND ULTRASTRUCTURE IN SEPIELLA MAINDRONI

作　　者：于新秀[1] 吴常文[1] 迟长凤[1] 

机构地区：[1]浙江海洋学院浙江省海洋养殖装备与工程技术重点实验室,舟山316004

出　　处：《海洋与湖沼》2011年第2期300-304,共5页Oceanologia Et Limnologia Sinica

基　　金：国家高技术研究发展计划(863)项目;2010AA10A404号;国家自然科学基金项目;31001109号;2009年度浙江省研究生创新科研项目;YK2009070号

摘　　要：采用解剖学、组织切片以及电子显微镜技术,对成熟曼氏无针乌贼的脑部形态结构进行观察。结果表明,以贯穿脑的食道作为参照物,可将其脑分为三部分:食道上神经团、食道下神经团以及位于脑两侧两个发达的视叶,各个神经团又可以细分为不同的神经叶。同时采用光镜和电镜技术对内分泌器官——视腺做了显微结构和超显微结构的观察,结果发现,视腺外缘有结缔组织包裹,位于视神经束区上,嗅叶和背外侧叶之间,视腺内可观察到大量分泌细胞,细胞核较大,直径可达10μm;分泌细胞含有丰富的粗面内质网、高尔基体及很多高电子密度的分泌颗粒。此项研究结果将为进一步研究曼氏无针乌贼的神经结构的生理以及发育提供形态学基础。The morphological structure of the brain of sexually mature Sepiella maindroni was examined in this study. Based on our observations, the brain of S. maindroni can be divided into three parts, which included a supraesophageal mass, a suboesophageal mass, and two advanced optic lobes referring to the esophagus. In addition, each mass can be sub- divided into different lobes. Observation of the microstructure and ultrastructure of the optic gland revealed that this gland was covered by a thin layer of connective tissue, which was located on the optic tract and between the olfactory lobe and the dorsal lateral lobe. Abundant secretory cells with the diameter of up to 10μm were observed within the optic gland. The ultrastructure of the secretory cells was examined using a Transmission Electron Microscope （TEM）, which revealed numerous rough endoplasmic reticula, Golgi apparatus, and electron dense granules inside the cells. These results will provide morphological basis for the research on physiology and development of neuromechanism in S. maindroni.

关 键 词：曼氏无针乌贼 脑 视腺 显微结构 超显微结构 

分 类 号：S946.11[农业科学—水产养殖]