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首页> 外文期刊>Parasitology >Functional ultrastructure of eggs and cellular organization of hexacanths of the cyclophyllidean cestode Thysanotaenia congolensis: a phylogenetic implication of obtained results
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Functional ultrastructure of eggs and cellular organization of hexacanths of the cyclophyllidean cestode Thysanotaenia congolensis: a phylogenetic implication of obtained results

机译：鸡蛋的功能超微结构和环叶螺lide胸腺囊尾Th的六角形的细胞组织：获得的系统发育意义

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摘要

The functional ultrastructure of eggs and cellular organization of hexacanths from gravid proglottids of Thysanotaenia congolensis, from black rats from Cape Verde, were examined by transmission electron microscopy. Mature eggs with fully formed hexacanths are grouped within parenchymatous capsules of gravid proglottids. Oncospheral envelopes surrounding mature hexacanths are reduced to a very thin membranous embryophore as their protective function is taken over by the parenchymatous capsules originating from the medullary parenchyma of immature proglottids and composed of three layers. Six major cell types are present: a bi-nucleate medullary centre; a six-nucleate U-shaped penetration gland; a second type of penetration gland; two neurosecretory-type nerve cells; about 30 somatic cells; and about 12 germinative cells. Present results on the functional ultrastructure of eggs and cellular organization of hexacanths support the phylogenetic distinction between T. congolensis and cestodes of the subfamily Anoplocephalinae.
机译：通过透射电子显微镜检查了来自佛得角黑鼠的卵的Thysanotaenia congolensis的怀孕的卵的卵的功能超微结构和六碳体的细胞组织。具有完全形成的十六烷的成熟卵被分组在妊娠的proglottids的薄壁组织中。围绕成熟hexacanth的外皮被膜还原为非常薄的膜状胚团，因为它们的保护功能被不成熟的前glo突髓质薄壁组织的薄壁组织所取代，并由三层组成。存在六种主要的细胞类型：双核髓质中心;六核U形穿透管;第二类渗透压盖;两个神经分泌型神经细胞;约30个体细胞;和大约12个生殖细胞。卵的功能性超微结构和hexacanths的细胞组织的最新研究结果支持刚果锥虫和无头畸形亚科虫的系统发育区分。

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