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在ParasiteBlitz期间探索隐藏的寄生虫多样性,在沿海息地梯度中使用环境DNA元编码进行环境DNA元编码

K M Hill-Spanik¹, D M Díaz-Morales^2,3,4,5, S D Atkinson⁶

¹Department of Biology, https://ror.org/00390t168College of Charleston, Charleston, SC, USA.

Journal of helminthology

|October 13, 2025

概括

环境DNA (eDNA) 元编码有效评估了水生息地中的寄生虫多样性. 不同的采样方法捕获了不同的寄生虫群体,强调了需要改进的数据库和原料.

科学领域:

寄生虫学的寄生虫学
环境DNA (eDNA) 的元编码.
水生生态学水生生态学

背景情况:

寄生虫生物多样性评估在历史上一直落后于其他生物多样性评估.
环境DNA (eDNA) 元编码为检测各种环境矩阵中的寄生虫提供了一种有希望的方法.
有限的研究已经全面评估了eDNA元编码,用于在不同的水生息地和采样方法中检测寄生虫.

研究的目的:

实施和评估eDNA元编码,以评估四个连接的水生息地中的寄生虫多样性.
为了比较不同采样方法 (沉积物,主动过水,被动收集水) 对于寄生虫检测的有效性.
识别寄生虫操作分类单位 (OTU) 并评估息地间的多样性和社区结构.

主要方法:

从南卡罗来纳州沿海的四个水生息地收集了沉积物和水样.
利用了五个amplicon库,针对各种寄生虫群体的线粒体COI和18S核糖体RNA基因.
处理了超过580万个序列,以识别寄生虫片序列变异 (ASV) 和操作分类单元 (OTU).

主要成果:

识别了超过1000个寄生虫ASV,相当于六个寄生虫群体的约600个寄生虫OTU.
微型菌体表现出最高的多样性,它们的测量显示出最大的忠实性.
活跃过的水样捕获了所有六个寄生虫群体,而沉积物捕获了具有较高ASV数量的四个群体.

结论:

在密集调查期间,eDNA元编码对评估寄生虫多样性是有效和高效的.
最优的采样方法因寄生虫群和息地而异,表明需要量身定制的方法.
增强的寄生虫序列数据库和原料开发对于改进基于eDNA的寄生虫检测至关重要.

关键词:

生物突击活动生物多样性生物多样性我们的eDNADNA 高通量测序的高通量测序湿地生态系统湿地生态系统

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