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首页> 美国卫生研究院文献>Heliyon >Contributions to the knowledge of Pseudolevinseniella (Trematoda: Digenea) and temnocephalans from alien crayfish in natural freshwaters of Thailand
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Contributions to the knowledge of Pseudolevinseniella (Trematoda: Digenea) and temnocephalans from alien crayfish in natural freshwaters of Thailand

机译：来自泰国天然淡水中的外来小龙虾对拟假单胞菌（Trematoda：Digenea）和temnocephalans知识的贡献

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Redclaw crayfish ( ) is a decapod species originating from Australian freshwater. For more than two decades, these crayfish have been re-distributing to environments in many countries, including Thailand. Moreover, they can carry endosymbionts and/or ectosymbionts into new environments. The aim of this study was to introduce a morphological description of as a metacercaria of the endoparasites of redclaw crayfish collected from natural water sources in Thailand. The occurrence of two ectosymbiotic temnocephalans ( and sp.) in was also reported. The internal morphology of , and were described and discussed. The surface ultrastructure of the multidentate spines on the body and the metacercarial cyst wall of was investigated by scanning electron microscopy (SEM). By performing a search of the GenBank nucleotide database of partial sequences of 18S, 28S rDNA and cytochrome c oxidase subunit I (cox1), . was found to be related to , and was found to be related to . . However, according to the cox1 gene, was found to be similar to . These results reveal that redclaw crayfish that inhabit natural freshwaters in Thailand may harbour endoparasites and ecto- and endosymbionts. Furthermore, these findings may be able to monitor invasive or non-invasive species in an ecosystem.
机译：红爪小龙虾（）是来自澳大利亚淡水的十足鱼类。在超过二十年的时间里，这些小龙虾已经重新分布到包括泰国在内的许多国家的环境中。而且，它们可以将共生内生菌和/或外生共生菌带入新的环境。这项研究的目的是介绍从泰国天然水源收集的红爪小龙虾内寄生虫的尾meta虫的形态学描述。还报道了两个胞外共生性头颅虫（和sp。）的发生。和的内部形态进行了描述和讨论。通过扫描电子显微镜（SEM）研究了多齿棘在身体和cer骨囊壁上的表面超微结构。通过对18S，28S rDNA和细胞色素c氧化酶亚基I（cox1）的部分序列的GenBank核苷酸数据库进行搜索。被发现与相关，并且被发现与。 。但是，根据cox1基因，发现与相似。这些结果表明，居住在泰国天然淡水中的红爪小龙虾可能带有内寄生物以及胞外共生菌。此外，这些发现可能能够监测生态系统中的入侵或非入侵物种。

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