| 钙离子浓度对暗适应时的中华绒螯蟹光感受器超微结构的影响 |
| |
| 引用本文： | 袁维佳,陈蕾,潘晓震,张慧绮,盛春.钙离子浓度对暗适应时的中华绒螯蟹光感受器超微结构的影响[J].动物学研究,1999,20(1):32-35. |
| |
| 作者姓名： | 袁维佳 陈蕾 潘晓震 张慧绮 盛春 |
| |
| 作者单位： | 上海师范大学生物学系,上海,200234;上海师范大学实验中心,上海,200234 |
| |
| 基金项目： | 国家自然科学基金,上海市科委归国人员科研资助费资助项目 |
| |
| 摘 要： | 用透射电镜研究了暗适应时中华绒螯蟹的光感受器超微结构与外界钙离子浓度的关系，结果显示出与培育在生理溶液中的光感受器相比，细胞外钙离子浓度升高，使得感杆束的直径急剧缩小，感杆束周围胞质增厚，胞饮泡增加，膜下猪泡囊极度减小。胞质中多囊体的数量和直径减小，而板模体和溶酶体的数量增加，同时细胞内的色素颗粒增多。分布在小网膜细胞的远端。细胞的结构表现为类似光适应状态，与之相反，细胞外钙离子浓度降低时小眼的感
|
| 关 键 词： | 中华绒螯蟹 光感受器 超微结构 钙离子 |
EFFECTS OF CALCIUM CONCENTRATION ON THE FINE STRUCTURE OF DARK0ADAPTED PHOTORECEPTORS IN THE CRAB (Eriocheir sinensis) |
| |
| YUAN Wei-jia,CHEN Lei,PAN Xiao-zhen,ZHANG Hui-qi,SHENG Chun.EFFECTS OF CALCIUM CONCENTRATION ON THE FINE STRUCTURE OF DARK0ADAPTED PHOTORECEPTORS IN THE CRAB (Eriocheir sinensis)[J].Zoological Research,1999,20(1):32-35. |
| |
| Authors: | YUAN Wei-jia CHEN Lei PAN Xiao-zhen ZHANG Hui-qi SHENG Chun |
| |
| Abstract: | The relationship of extracellular Ca concentration and the fine structure of dark adapted photoreceptors in the crab ( Eriocheir sinensis ) was studied with electron microscopy.The results showed that in vitro ,in presence of 50 mmol/L calcium,the diameter of rhabdoms and the dimension of perirhabdomal vacuoles extremely reduced than that of photoreceptor incubated in physiological saline. The dimension of the cytoplasm,located around the rhabdom, increased in the higher extracellular Ca solution.Meanwhile,like the morphological structure of the retinular cells during light adaptation,the pinocytotic vesicles were more,the diameter and number of multivesicular bodies reduced,while the number of lamellar bodies and lysosomes increased in the retinula.The pigment granules were more and located in distal part of the retinular cell.However,in presence of 50 mmol/L EGTA and 2 mmol/L calcium,the diameter of the rhabdoms,the dimensiom of perirhabdomal vacuoles and the number of multivesicular bodies was increased, but the pinocytotic vesicles were few and the pigment granules located in the proximal region. |
| |
| Keywords: | Eriocheir sinensis Photoreceptor Ultrastructure Calcium |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《动物学研究》浏览原始摘要信息 |
|
点击此处可从《动物学研究》下载全文 |
|
