ULTRASTRUCTURAL CHARACTERISTICS OF THE EJACULATORY DUCT OF THE MALE TSETSE, GLOSSINA MORSITANS-MORSITANS WESTWOOD
ULTRASTRUCTURAL CHARACTERISTICS OF THE EJACULATORY DUCT OF THE MALE TSETSE, GLOSSINA MORSITANS-MORSITANS WESTWOOD
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DOI：
10.1017/s1742758400010997
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发表时间：
1988-01-01
期刊：
影响因子：
--
通讯作者：
MURITHI, JK
中科院分区：
文献类型：
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作者：
KOKWARO, ED;MURITHI, JK
检查了 Glossina morsitans morsitans Westwood 射精管上皮的超微结构变化，以了解与精囊形成相关的特殊特征；特别关注细胞质细胞器和质膜特化（顶端内折叠和空间形成）。在内部，运输系统的特点是有一个由立方体细胞包围的角质层内腔。内质网很少，而线粒体分布在整个细胞质中。在细胞的角质层表面，广泛的顶端内折与大量线粒体相关。糖原颗粒仅存在于苍蝇的细胞质中。顶部，相邻细胞紧密并列；然而，突出的细胞间隙形成（1 至 7 天），渗透到大部分上皮并连接到细胞的基底表面。这些是被认为具有吸收功能的运输细胞的特征。随着成蝇年龄的增长，上皮的超微结构特征发生变化，其特征是糖原颗粒的消失和细胞间隙的形成。简要讨论射精管的特征及其在精子形成中的作用。
The ultrastructural changes in the ejaculatory duct epithelium in Glossina morsitans morsitans Westwood was examined for special features related to spermatophore formation; special attention was paid to the cytoplasmic organelles and the plasma membrane specializations (apical infolding and space formation). Internally, the transportation system is characterized by a cuticle-lined lumen bordered by cuboidal cells. The endoplasmic reticulum is scarce, while mitochondrial are distributed throughout the cytoplasm. At the cuticular surface of the cells, extensive apical infoldings are associated with numerous mitochondria. Glycogen granules are found only in the cytoplasm of teneral flies. Apically, adjacent cells are tightly apposed; however, prominent intercellular spaces develop (1 to 7 days), permeate most of the epithelium and connect to the basal surface of the cells. These are features characteristic of transporting cells believed to have an absorptive function. As the adult fly ages, the ultrastructural characteristics of the epithelium changes and are typified by the disappearance of glycogen granules and the formation of intercellular spaces. The features of the ejaculatory duct are discussed briefly in terms of their role in spermatophore formation.