| 摘要: |
| 【目的】研究花绒寄甲围心细胞形态、数量和分布特点，为了解其结构和功能提供基础。【方法】以经多代繁育的花绒寄甲幼虫、蛹和成虫为材料，用扫描电镜对其心脏和巨型围心细胞形态进行解剖观察。【结果】花绒寄甲的背血管属于直管型，心脏起始于第2腹节，心脏表面覆盖着纵向的心包膜肌肉，心脏由6个心室组成，每个心室两侧分别整齐排列着5～7对巨型围心细胞，直径达(114.2±3.9) μm。花绒寄甲幼虫、蛹和成虫期围心细胞的数量和形态无显著差异，围心细胞与心室接触表面的空隙处存在大量血细胞。【结论】花绒寄甲的围心细胞在胚胎期可能已完成了所有的分化和发育，具备了完整的功能。 |
| 关键词: 花绒寄甲 心脏 围心细胞 超微结构 |
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| 基金项目:国家自然科学基金项目(31170608)；2012年国家级大学生科技创新项目“羟基马桑毒素对花绒寄甲围心细胞超微结构的影响”(1210712046) |
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| SEM study of the giant pericardial cells of Dastarcus helophoroides |
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WANG Ji-shen,CUI Jun,LIU Yi-han,et al
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| Abstract: |
| 【Objective】 Research on the morphology,amount and distribution characteristics of pericardial cells in Dastarcus helophoroides,can provide the basis for understanding their structure and function better.【Method】The heart and pericardial cell were dissected from larvae, pupae and adults Dastarcus helophoroides and then were investigated using scanning electron microscopy.【Result】The dorsal vessel of Dastarcus helophoroides was a straight tube.The heart covered by a muscular tube located directly below the dorsal cuticle began from the second abdominal uromere,and it consisted 6 ventricles with 5-7 pericardial cells located alongside each heart ventricle and alary muscles displaying ramifications that extend from the body wall to the heart surface.The diameter of the pericardial cells was (114.2±3.9) μm,and the morphology,amount of pericardial cells from larvae,pupae and adults Dastarcus helophoroides had no significant difference.【Conclusion】The result indicates that the differentiation and development of pericardial cells of Dastarcus helophoroides are completed during embryonic period,and possesse integrated function. |
| Key words: Dastarcus helophoroides heart pericardial cell ultrastructure |
