中华蜜蜂视觉系统中神经胶质的组成和胚后发育

神经胶质作为视觉系统的重要成分之一， 对视觉系统的发育及功能起着重要的作用。本研究通过组织解剖观察、 免疫组织化学等技术， 对中华蜜蜂Apis cerana cerana幼虫和蛹的视觉系统中神经胶质的类型和发育过程进行了比较研究。研究表明： 在中华蜜蜂视觉系统中， 根据神经胶质的位置和形态主要分为表面神经胶质、 皮层神经胶质和神经纤维网神经胶质3种类型； 神经胶质主要来源于视柄和视叶中的神经胶质前体中心； 神经胶质细胞数量的增加一方面来自于细胞的迁移， 另一方面来自于神经胶质细胞自身的分裂增殖。本研究为昆虫神经胶质的发育以及功能研究提供理论基础。

Organization and postembryonic development of glial cells in the visual system of the Chinese honeybee,Apis cerana cerana(Hymenoptera:Apidae)

Glial cells exist throughout the visual system,and play essential roles in various aspects of neural development and function.The type and development of glial cells of larval and pupal visual system in the Chinese honeybee,Apis cerana cerana,were comparatively studied by using tissue anatomy and immunohistochemical method(5-bromo-2-deoxyuridine,BrdU incorporation).The results show that in the visual system of A.cerana cerana,glial cells are classified into three categories based on the position of their cell bodies and cell morphology,i.e.,surface glia,cortex glia,and neuropil glia.The glia have at least two different sources,including the optic stalk and the glial precursor centre(GPC) in the developing optic lobe.The increase in the number of glial cells is most likely due to the migration of glial cells and glial proliferation during postembryonic development.These results lay an essential foundation for studying glia development and function in insect brain.