Cement glands are one of the most conspicuous and distinctive elements of taxonomic interest in male Acanthocephala. Cement glands vary in shape, number and arrangement in different classes of the taxon. The glands and their products have a fundamental role in the reproductive process. Light and electron microscopy were used to investigate the ultrastructure of the cement apparatus, which includes both cement glands and the cement reservoir, in mature males of Centrorhynchus globocaudatus (Zeder, 1800). Centrorhynchus globocaudatus is an enteric parasite of birds of prey, including Falco tinnunculus (Linnaeus, 1758) and Buteo buteo (Linnaeus, 1758) from the province of Ferrara (northern Italy). The four elongated cement glands of C. globocaudatus are situated posterior to the testes. Sections through the cement glands show each gland is surrounded by a fibrous envelope with an approximate thickness of 0.6 μm. Beneath this envelope is an outer cytoplasmic layer thickness ranging from 22 to 26 μm, which contains a number of nuclei with diameters variable from 20 to 22 μm. The cytoplasmic layer is filled with prominent free ribosomes and many mitochondria with lamellar cristae. Secretory granules, measuring from 1 to 1.3 μm in diameter, are formed within the cytoplasmic layer. The cytoplasmic layer surrounds the luminal area for storage of the cement material in each gland. Cement gland ducts arise from the gland and extend towards a common cement reservoir in close contact with the seminal vesicle and Saefftigen's pouch. Microtubules, large secretory granules and rest of undefined organelles were also observed within the cement reservoir.

中文翻译：

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雄性球尾鳐(Acanthocephala)骨水泥装置的超微结构及骨水泥腺分泌功能

水泥腺是雄性棘头动物分类学兴趣中最显着和独特的元素之一。水泥腺的形状、数量和排列在分类单元的不同类别中有所不同。腺体及其产物在生殖过程中发挥着重要作用。光学和电子显微镜用于研究水泥装置的超微结构，包括水泥腺体和水泥储层，在成年雄性中圆尾尖嘴鱼（泽德，1800）。圆尾尖嘴鱼是猛禽的肠道寄生虫，包括隼（林奈，1758）和鲶鱼（林奈，1758 年）来自费拉拉省（意大利北部）。四个细长的水泥腺体C. globocaudatus位于睾丸后方。通过水泥腺体的切片显示每个腺体都被厚度约为 0.6 μm 的纤维包膜包围。在这个包膜下面是一个厚度在 22 到 26 微米之间的外细胞质层，其中包含许多直径从 20 到 22 微米不等的细胞核。细胞质层充满突出的游离核糖体和许多具有层状嵴的线粒体。在细胞质层内形成直径为 1 至 1.3 μm 的分泌颗粒。细胞质层围绕管腔区域，用于在每个腺体中储存水泥材料。水泥腺导管从腺体中产生并延伸至与精囊和 Saefftigen 囊紧密接触的共同水泥储库。微管，