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首页> 外文期刊>Journal of Parasitology >Redescription of Corallobothrium solidum (Cestoda: Proteocephalidea) and erection of a new genus, Essexiella, for tapeworms from channel catfishes (Ictaluridae).
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Redescription of Corallobothrium solidum (Cestoda: Proteocephalidea) and erection of a new genus, Essexiella, for tapeworms from channel catfishes (Ictaluridae).

机译：为河solid鱼的tape虫重新命名珊瑚叶虫（Cestoda：Proteocephalidea），并建立新属 Essexiella 。

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摘要

The proteocephalidean tapeworm, Corallobothrium solidum, type species of the genus, is redescribed on the basis of the examination of its type specimens and extensive material recently collected from Malapterurus electricus (type host). Some morphological characteristics of taxonomic importance are reported for the first time, such as the presence of semispherical (U-shaped) sphincters on the external (outer) margin of the suckers, a vaginal sphincter, a well-developed seminal receptacle, and a unique morphology of the eggs. Corallobothrium solidum differs from the 2 remaining species of the genus, both parasitic in channel catfishes (Ictaluridae), in its scolex shape, morphology of its suckers, presence of longitudinal and transverse grooves on the body surface, dense network of excretory canals in the apical part of the scolex, morphology of the eggs, and uterine development. The non-monophyletic nature of Corallobothrium is further supported by molecular data (partial sequences of the 28S rRNA gene) because C. solidum and the 2 remaining species from ictalurids do not form a monophyletic assemblage. Therefore, Essexiella n. gen. is proposed to accommodate Essexiella fimbriatum new comb. (type and only species; syn. Corallobothrium fimbriatum) from channel catfish. Essexiella n. gen. differs from Corallobothrium, Megathylacoides, and Megathylacus by the absence of a sphincter in the suckers, from Corallotaenia by the shape of the scolex and the number and shape of proglottids, and from Paraproteocephalus by the structure of the uterus. The diagnosis of Corallobothrium, which becomes monotypic and restricted to electric catfishes in Africa, is emended. The remaining species of Corallobothrium, Corallobothrium parafimbriatum, is tentatively transferred to Corallotaenia as Corallotaenia parafimbriata n. comb., based on molecular data, small size of the strobila, and shape of the scolex.
机译：在检查其类型标本和最近从 Malapterurus electricus （类型宿主）收集的大量材料的基础上，重新描述了前脑蠕虫tape虫（Corallobothrium solidum ）的类型物种。 ）。首次报道了分类学重要性的一些形态特征，例如在吸盘的外部（外部）边缘上存在半球形（U形）括约肌，阴道括约肌，发育良好的精囊和独特的卵的形态。 珊瑚角斑病菌与其余两个属不同，均在河channel鱼（Ictaluridae）中寄生，其菌柄形状，吸盘的形态，在体表上有纵沟和横沟，致密的顶端部分的排泄通道网络，卵的形态和子宫发育。 Corallobothrium 的非单性性质进一步得到分子数据（28S rRNA基因的部分序列）的支持，因为 C。固相线虫和螨属的其余2种不会形成单一系统的组合。因此， Essexiella n。 gen。建议使用新的梳状埃塞氏菌。 （类型和唯一的物种;同种珊瑚叶珊瑚菌）。 Essexiella gen。与珊瑚叶虫， Megathylacoides 和 Megathylacus 不同的是，吸盘中没有括约肌，而 Corallotaenia 下颌骨的形状和前舌骨的数量和形状，并根据子宫的结构来自 Paraproteocephalus 。在非洲，对珊瑚叶虫的诊断变得单一，并仅限于电ty鱼。其余的珊瑚球菌，珊瑚球菌副纤毛，被暂时转移为珊瑚草，作为珊瑚草。基于分子数据，频闪菌的小尺寸和菌毛的形状。

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