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首页> 外文期刊>Journal of Parasitology >Redescription of Cystidicoloides fischeri Based on Specimens From Piranhas in Brazil, and Erection of a New Genus (Nematoda: Cystidicolidae)
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Redescription of Cystidicoloides fischeri Based on Specimens From Piranhas in Brazil, and Erection of a New Genus (Nematoda: Cystidicolidae)

机译：根据巴西食人鱼的标本重新命名费氏纤毛虫，并建立新属（线虫：Cystidicolidae）

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摘要

The cystidicolid nematode Cystidicoloides fischeri (Travassos, Artigas and Pereira, 1928) is redescribed from specimens collected from the stomach of the San Francisco piranha, Pygocentrus piraya (Cuvier), and the white piranha, Serrasalmus brandtii (Lütken) (both Characidae, Characiformes) (new host records), from the Três Marias Reservoir, Upper São Francisco River, Minas Gerais state, Brazil. The morphology of this type species of Cystidicoloides Skinker, 1931, studied with both light and scanning electron microscopy, is characterized by some taxonomically important, previously unreported features, such as the presence of a cephalic cuticular collarette, subdorsal and subventral cephalic spikes, cuticular tooth-like elevations inside the prostom, deirids, area rugosa, and details in the structure of the cephalic end. Heliconema izecksohni Fabio, 1982 is transferred to Cystidicoloides as C. izecksohni (Fabio, 1982) n. comb. Cystidicoloides uniseriata Valovaya and Valter, 1988 is considered a species inquirenda with uncertain generic appurtenance. The presence of subdorsal and subventral cephalic spikes and the collarette are characteristic of Cystidicoloides, comprising only species parasitizing Neotropical fishes. The species from salmonids in the Holarctic, hitherto reported mostly as Cystidicoloides ephemeridarum (Linstow, 1872), belongs to a different, newly erected genus, for which the name Salmonema n. gen. (type species S. ephemeridarum) is now proposed. Cystidicoloides prevosti (Choquette, 1951) is transferred to Salmonema as S. prevosti (Choquette, 1951) n. comb. Sterliadochona ssavini Skryabin, 1948 and Sterliadochona Skryabin, 1948 are considered as species inquirenda and a genus inquirendum, respectively. A key to species of Cystidicoloides is provided.
机译：从旧金山食人鱼，Pygocentrus piraya（Cuvier）和白色食人鱼Serrasalmus brandtii（Lütken）的胃中采集标本，重新描述了半胱氨酸线虫Cystidicoloides fischeri（Travassos，Artigas和Pereira，1928）。 （新的主机记录），来自巴西米纳斯吉拉斯州上圣弗朗西斯科河上的特雷斯玛丽亚斯水库。这种类型的Cystidicoloides Skinker（1931年）的形态通过光镜和扫描电子显微镜进行了研究，其特征是具有一些分类学上重要的，以前未报告的特征，例如，存在头皮表皮collar突，背侧和腹侧下突突，表皮齿状的假体，虹膜，皱纹区域以及头端结构的细节。 Heliconema izecksohni Fabio，1982年以C. izecksohni（Fabio，1982）的身份移交给Cystidicoloides。梳子。 Cystidicoloides uniseriata Valovaya和Valter，1988年被认为是一种具有不确定通用属种的被调查物种。背侧和腹侧下突突和颈圈的存在是Cystidicoloides的特征，仅包括寄生于新热带鱼类的物种。迄今为止，据报道，来自霍拉克蒂奇鲑科的鲑鱼种类主要为星状Cystidicoloides ephemeridarum（Linstow，1872），属于另一个新近成立的属，名称为Salmonema n。 gen。 （拟南芥属类型）现在被提出。 Cystidicoloides prevosti（Choquette，1951）被转移到Salmonema中，成为S. prevosti（Choquette，1951）。梳子。 Sterliadochona ssavini Skryabin（1948年）和Sterliadochona Skryabin（1948年）被分别视为被调查种和被调查种。提供了氰菊酯种类的关键。

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