首页> 外文期刊>Progress in Biophysics and Molecular Biology: An International Review Journal >Rejection of the synonymization of Pegosomum saginatum (Ratz, 1898) Ratz, 1903 with Pegosomum asperum (Wright, 1879) Ratz, 1903
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Rejection of the synonymization of Pegosomum saginatum (Ratz, 1898) Ratz, 1903 with Pegosomum asperum (Wright, 1879) Ratz, 1903

机译:拒绝Pegosomum saginatum(RATZ,1898)RATZ,1903年与PEGOSOMUM Asperum(Wright,1879)RATZ,1903

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The Pegosomum Ratz, 1903 are digenean parasites of piscivorous birds. They exhibit few morphological autapomorphies and some of their identification features (number of collar spines) can be altered before or during fixation. Several re-classifications within the genus were suggested, but they have never been supported by molecular analyses. We addressed the synonymization of species within Pegosomum asperum/saginatum complex suggested by Dubinin, Dubinina and Saidov. We analyzed one nuclear (ITS2) and two mitochondrial (CO1, ND1) loci of two central European species of Pegosomum, namely Pegosomum asperum (Wright, 1879) Ratz, 1903 and Pegosomum saginatturt (Ratz, 1898) Ratz, 1903. Our combined molecular and comparative morphological analyses confirmed the validity of the two Pegosomum spp. Both species had highly similar morphology and occurred sympatrically in the gall bladder and bile duct of Ardea alba (Linnaeus, 1758). P. saginatum occurred more frequently in hosts infected concurrently with P. asperum. We also provided host-, age- and sex-specific prevalence and intensity of infections, and comparative measurements of the two Pegosomum spp. based on an extensive dataset collected from 1962 to 2016. These species can be morphologically distinguished based on the extent of vitellarium, which reached anteriorly to the pharynx in P. asperum but extended anteriorly to the midline of the esophagus in P. saginatum. The species also differed in the cirrus diameter (P. asperum >= 447, P. saginatum = 447).
机译:Pegosomum RATZ,1903年是品质鸟类的DigEnean寄生虫。它们表现出几种形态的自身形态,并且它们在固定之前或期间可以改变它们的一些识别特征(套环刺的数量)。建议在属中进行几种重新分类,但它们从未得到分子分析的支持。我们解决了Dubinin,Dubinina和Depov所建议的Pegosomum Asperum / Saginatum复合物中物种的同义。我们分析了两种中欧欧洲Pegosomum的核(ITS2)和两种线粒体(CO1,ND1)基因座,即Pegosomum Asperum(Wright,1879)ratz,1903和Pegosomum saginatturt(RATZ,1898)RATZ,1903年。我们的合并分子并且比较形态学分析证实了两种Pegosomum SPP的有效性。两种物种具有高度相似的形态,在Ardea Alba(Linnaeus,1758)的胆囊和胆管中发生了同性恋。 P. saginatum在与P. Asperum同时感染的宿主中发生频率。我们还提供了宿主,年龄和性别特异性的患病率和感染强度,以及两种Peg组瘤SPP的比较测量。基于从1962年至2016年收集的广泛数据集。这些物种可以基于vitellarium的程度形态地区分,该体形态地区分,该含量在对P. asperum的咽部咽部内咽部达到咽部,但前往P. saginatum中食道中线延伸。该物种在肝直径中也有所不同(asperum> = 447,p. saginatum& = 447)。

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