【摘要】 用透射电镜对中华绒螯蟹 ( Eriocheir sinensis)大颚器官 ( MO)的超微结构及眼柄切除后 MO的变化进行了研究 .中华绒螯蟹具大颚器官一对 ,位于大颚正后方大颚腱的基部 .MO由许多细胞团组成 ,细胞团间广布血淋巴通道和血淋巴窦 .细胞核内密集的异染色体聚集在核质的外缘 ,细胞质内有两种不同类型的无颗粒内质网及大量形状各异的线粒体 .与血淋巴通道相连的细胞膜 ,呈现不同程度的内陷和皱褶 .眼柄切除后 ,MO中无颗粒内质网数量减少 ,线粒体膨大 ,空泡数量增多 .更多还原

【Abstract】 This paper emphasizes on the ultrastructure of mandibular organ (MO) in Erocheir sinensis and OM’s changes after eyestalk ablation. The channels of hemolymph subdivide the MO into cords. Each cord is composed of many approximate rectangle cells. The karyoplasm contains patch of condensed chromatin closely associating with the nuclear envelope. The plasma membrane bordering the basal lamina consists of invaginations in varying degree which may serve to increase the surface area for metabolic exchange. A promient feature of MO cell is two distinct types of agranular endoplasmic reticlum. Furthermore, numerous mitochondria、 vesicles、 microbodies and lipidlike inclusions scatter throuhout the cytoplasm. The MO cell have several changes occur in the ultrastructure following eyestalk ablation. These include loss of some TER and inflate of mitochondrial structure. The amount of visicles increases and fill the entire cells. The ultrastructure features reveal MO cells may be steroid secreting cells.更多还原