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首页> 美国卫生研究院文献>Parasite >Dactylogyridae (Monogenoidea Polyonchoinea) from the gills of Auchenipterus nuchalis (Siluriformes Auchenipteridae) from the Tocantins River Brazil
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Dactylogyridae (Monogenoidea Polyonchoinea) from the gills of Auchenipterus nuchalis (Siluriformes Auchenipteridae) from the Tocantins River Brazil

机译：来自巴西Tocantins河的Auchenipterus nuchalis（SiluriformesAuchenipteridae）the的the科（MonogenoideaPolyonchoinea）

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摘要

Two species of Kritsky, Thatcher & Boeger, 1986 (both new) and two species of Suriano, 1983 (one new) are reported from the gills of the catfish popularly known as “mapará”, from the Tocantins River and tributaries, North Region of Brazil. n. sp. differs from all other species presently known in the genus by the morphology of the anchors presenting an elongate shaft and short recurved point, a coiled male copulatory organ (MCO) with three rings, and an elongate slender accessory piece with a bifurcated distal end. n. sp. differs from its congeners by the combination of the following features: (1) Ventral and dorsal anchors with moderately long curved shaft and short point; (2) Hooks with poorly developed thumb; (3) Hook pairs 5 and 6 similar to each other, but morphologically distinct from remaining hook pairs; and (4) MCO coiled, with approximately 1.5 rings. n. sp. is easily distinguished from other species of the genus by presenting an inverted-G-shaped MCO with a median knee-like expansion. Tavernari, Takemoto, Lacerda & Pavanelli, 2010 is redescribed based on paratypes and specimens from the gills of from the Tocantins River, a new host and locality records for this species. The monotypic Acosta, Scholz, Blasco-Costa, Alves & Silva, 2017, the only other Neotropical genus reported in siluriforms besides with species presenting two ribbon-like projections on the posterior margin of the dorsal bar, is considered a junior subjective synonym of .
机译：从Tocantins河和北部支流的fish鱼reported中报道了两种克里特斯基（1986年的撒切尔和伯格）和两种苏里亚诺（1983年的）（一种新）。巴西。 。 sp。与目前在该属中已知的所有其他物种不同，这些锚的形态具有细长的杆身和短的弯曲点，带有三个环的盘绕的雄性交配器官（MCO）和带有远端分叉的细长细长附件。 。 sp。与以下同类特征的区别在于：（1）腹锚和背锚具有适度的长弯曲轴和短点； （2）钩的拇指不发达； （3）钩对5和6彼此相似，但在形态上与其余钩对不同； （4）MCO盘绕，约1.5圈。 。 sp。通过呈现中位膝状扩张的倒G形MCO，很容易将其与该属的其他物种区分开。 Tavernari，Takemoto，Lacerda和Pavanelli，2010年是根据托坎丁斯河the的副型和标本重新描述的，该物种是该物种的新寄主和地方记录。单型的Acosta，Scholz，Blasco-Costa，Alves和Silva，2017年，除了在背杆后缘具有两个带状突起的物种外，还有其他以siluriform报道的新热带属，也是唯一的主观同义词。

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