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首页> 外文期刊>Journal of Parasitology >Revealing cryptic parasite diversity in a definitive host: echinostomes in muskrats.
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Revealing cryptic parasite diversity in a definitive host: echinostomes in muskrats.

机译：在确定的宿主中揭示隐性寄生虫的多样性：麝香棘皮动物。

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摘要

Many trematode groups have a long history of systematic revision, which can make parasite identification a difficult task. The trematode parasites of muskrats are no exception. Here, we highlight the systematic issues associated with trematodes of muskrats ( Ondatra zibethicus). Then, we demonstrate the utility of using both morphological and molecular tools to identify these parasites. Morphological examinations of specimens from muskrats (n=63) first suggested that at least 4 genera were present including Echinostoma, Wardius, Quinqueserialis, and Notocotylus. For the latter 3 groups, the 28S region verified this assessment. For echinostomes, ND1 sequences revealed at least 5 genetic lineages. A particular lineage, Echinostoma trivolvis lineage b, predominated in both prevalence and intensity of infection. Molecular sequences provided a more accurate estimate of echinostome diversity in the muskrats and further support the idea that E. trivolvis is a species complex. Future studies will focus on whether there are differences in host specificity among the E. trivolvis lineages. In addition, this study has provided initial sequences that will help verify the life cycles of Wardius, Quinqueserialis, and especially, Notocotylus. By linking molecular, morphological, and life history information, we can better understand parasite diversity.
机译：许多吸虫群体具有悠久的系统修订历史，这可能使鉴定寄生虫成为一项艰巨的任务。麝香的吸虫寄生虫也不例外。在这里，我们重点介绍与麝香（Ondatra zibethicus）的吸虫相关的系统性问题。然后，我们演示了使用形态学和分子工具来识别这些寄生虫的效用。对麝香标本（n = 63）进行的形态学检查首先表明，至少存在4个属，包括棘皮动物，沃迪乌斯，昆克斯里亚利斯和线虫。对于后3组，28S地区验证了此评估。对于棘皮动物，ND1序列显示至少5个遗传谱系。特定谱系，棘皮棘球E谱系b，在感染率和感染强度上均占主导地位。分子序列提供了对麝香中棘皮动物多样性的更准确的估计，并进一步支持了Trivolvis E. trivolvis是物种复合体的观点。未来的研究将集中于三叶肠埃希氏菌谱系之间的寄主特异性是否存在差异。此外，这项研究提供了一些初始序列，这些序列将有助于验证Wardius，Quinqueserialis，尤其是Notocotylus的生命周期。通过链接分子，形态和生活史信息，我们可以更好地了解寄生虫的多样性。

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