双斑蟋复眼和视叶的显微结构  

The fine structure of the compound eye and optic lobe of the two-spotted cricket Gryllus bimaculatus

作　　者：那宇鹏[1] 冷雪[2] 那杰[1,3] 

机构地区：[1]沈阳师范大学脑功能与认知科学实验室,沈阳110034 [2]辽宁中医药大学省部共建中医脏象理论及应用教育部重点实验室,沈阳110032 [3]沈阳师范大学化学与生命科学学院,沈阳110034

出　　处：《应用昆虫学报》2015年第6期1482-1490,共9页Chinese Journal of Applied Entomology

基　　金：辽宁省教育厅基金项目(LS2010151)

摘　　要：【目的】为探索昆虫视觉信号处理的重要神经结构,详细观察和描述了直翅目(Orthoptera)蟋蟀科(Gryllidae)代表性昆虫双斑蟋Gryllus bimaculatus De Geer复眼和视叶的组织学结构特征。【方法】利用扫描电镜技术和组织学切片技术,观察分析了30只双斑蟋的复眼和视叶组织学结构。【结果】双斑蟋复眼约有3400个小眼,均为六边形结构,小眼间隙内分布有机械感受器——感觉毛和钟形感受器。每个小眼均由角膜、晶锥、感杆束、6个网膜细胞及基膜等构成。视叶呈两个扇形结构,由三大神经纤维网构成,分别为神经节层、外髓、内髓。【结论】双斑蟋复眼表面具有少量感觉毛和钟形感受器,每个小眼均由角膜、晶锥、感杆束、6个网膜细胞及基膜等构成,属并列像眼,视叶由三大神经纤维网构成。[Objectives] To investigate the important neural structures of insect visual signal processing by observing and describing the histological structural features of the compound eyes and optic lobes of the cricket （Orthoptera： Gryllidae）. [Methods] The histological structure of the compound eye and optic lobe of 30 crickets was observed and analyzed using scanning electron microscopy and histological biopsy techniques. [Results] The compound eye was comprised of about 3 400 small hexagonal eyes. In the gaps between the small eyes, there are mechanoreceptors, which are sensory hair and bell-shaped receptors. Each small eye is comprised of a cornea, crystalline cone, rhabdome, 6 retinal cells and basement membrane, etc. The optic lobe has two fan-shaped structures and is comprised of three major networks of nerve fibers, the ganglion layer, outer medulla and inner medulla. [Conclusion] There are a few sensory hairs and bell-shaped receptors on the surface of the compound eyes of crickets. Each small eye is comprised of a cornea, crystalline cone, rhabdome, 6 retinal cells, basement membrane, etc. and the arrangement of small eyes is juxtaposed. The optic lobe is comprised of three major networks of nerve fibers

关 键 词：双斑蟋 复眼 视叶 组织结构 

分 类 号：Q964[生物学—昆虫学]