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首页> 外文期刊>Folia parasitologica >A new species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis cf. scripta from chicken turtle, Deirochelys reticularia (Emydidae), with an emendation and molecular phylogeny of Spirorchis
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A new species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis cf. scripta from chicken turtle, Deirochelys reticularia (Emydidae), with an emendation and molecular phylogeny of Spirorchis

机译：Spirorchis MacCallum的一个新种，1918年（Digenea：Schistosomatoidea）和Spirorchis参见。鸡龟的网眼虫，带螺旋藻的改良和分子系统发育

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Chicken turtles, Deirochelys reticularia (Latreille in Sonnini et Latreille) (Testudines: Emydidae) from Alabama, USA were infected by Spirorchis collinsi Roberts et Bullard sp. n. and Spirorchis cf. scripta. The new species is most easily differentiated from its congeners by the combination of having caeca that extend far beyond the genitalia, intercaecal genitalia positioned in the middle portion of the body, a testicular column that nearly abuts the caecal bifurcation, a cirrus sac positioned between the testes and ovary, a massive Mehlis' gland, an elongate, longitudinal metraterm that extends anteriad beyond the level of the ovary, a pre-ovarian genital pore, and a prominent, intercaecal Manter's organ. The specimens of S. cf. scripta differed from the holotype and published descriptions of Spirorchis scripta Stunkard, 1923 by several subtle morphological features, perhaps comprising intraspecific variation, but collectively warranted a detailed description herein. Based on examinations of the aforementioned specimens plus the holotype, paratypes and vouchers of morphologically-similar congeners, Spirorchis MacCallum, 1918 is emended to include the presence of oral sucker spines, a pharynx, lateral oesophageal diverticula ('plicate organ') and a median oesophageal diverticulum ('oeseophageal pouch'). Phylogenetic analysis of the nuclear large subunit rDNA (28S) recovered S. collinsi sister to Spirorchis picta Stunkard, 1923, & 99% similarity between S. cf. scripta and S. scripta, and a monophyletic Spirorchis MacCallum, 1918. No blood fluke infection has been reported previously from these drainages, Alabama, or this turtle species. This is the first new species of Spirorchis to be described from North America in 26 years.
机译：来自美国阿拉巴马州的海龟Deirochelys reticularia（Lasonille in Sonnini et Latreille）（睾丸科：Emydidae）被Spirorchis collinsi Roberts et Bullard sp。感染。 。和Spirorchis参见。脚本。新物种最容易与同类动物区分开来：盲肠延伸到生殖器之外，盲肠生殖器位于身体的中部，睾丸柱几乎与盲肠分叉相接，卷囊位于鼻中部之间。睾丸和卵巢，巨大的Mehlis腺，细长的纵向隔间，其延伸超出卵巢水平，卵巢前的生殖孔和显着的盲肠Manter器官。 S. cf.的标本scripta与Spirorchis scripta Stunkard（1923年）的原型和已发布的描述的不同之处在于，它包含几个细微的形态特征，可能包括种内变异，但在此共同保证了详细的描述。根据对上述标本的检查以及形态相似的同类物的全型，亚型和代金券，Spirorchis MacCallum（1918年）被修改为包括口腔粘液刺，咽，外侧食道憩室（“重复器官”）和中位食道憩室（“食道囊”）。对回收的大核亚基rDNA（28S）的S. collinsi姐妹进行了系统发育分析，Spicorchis picta Stunkard，1923年，＆。 S. cf. 99％相似。 scripta和S. scripta，以及单一的Spirorchis MacCallum，1918年。以前没有从这些排水系统，阿拉巴马州或这种乌龟物种中报告过血吸虫感染。这是26年以来北美首次描述的Spirorchis新物种。

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