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引用次数: 0
摘要
该研究通过 TEM 超微结构观察了金龙鱼肠道寄生虫 Lecithochirium grandid 的卵黄发生过程，卵黄发生过程分为四个发育阶段（1、2、3 和 4）。玻璃体束被细纤维层包裹，周围有分离的环形肌带。超微结构研究表明，玻璃体细胞的成熟包括玻璃体细胞发生过程中GER平行腔的扩展、细胞体积的增大以及在不同阶段聚集成团的颗粒数量的增加。在成熟的卵黄细胞中，存在大量的各种聚集体，如聚集成团的颗粒；这是构建蛋壳的重要部分，也是大量的不饱和脂滴。这与寄生性扁形动物卵母细胞发育的不同阶段一致。
ULTRASTRUCTURE OF VITELLOGENESIS AND VITELLOCYTES IN LECITHOCHIRIUM GRANDID ON SAURIDA UNDOSQUAMIS, TRAPPED FROM ALATAKA HARBOR, SUEZ GULF, EGYPT
The study gave TEM ultrastructural of vitellogenesis in Lecithochirium grandid , digenean intestinal parasite of Saurida undosquamis , four developmental phases (1, 2, 3 & 4) during vitel-logenesis. Vitelline bundles were enveloped with fine fibrous layer surrounded with separ-ated circular muscle bands. Ultrastructural study showed that vitellocyte maturation comprised of increased extension of parallel cisternae of GER, increase in cell size and in the different phases increased numbers of pellets aggregation in clusters during vitellogenesis. In mature vitel-locytes, there were large numbers of various aggregations such as aggregation of pellets in clusters; the important portion in construction of egg shell and a number of unsaturated lipid droplets. This agreed with different phases of oocyte development in parasitic Platyhelminthes.
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