Abstract

Genomic tools like RAD-sequencing can provide the resolution to understand the complex genetic patterns underlying cryptic biological invasions. Here we use this method to clarify the genetic consequences of a rampant invasion by the Italian pool frog (Pelophylax bergeri) north of the Alps, threatening the native P. lessonae and its hybridogenetic hybrid P. esculentus. Patterns of genetic structure were consistent with massive genetic introgression, except for an isolated mountain valley in Switzerland (Joux). Moreover, alien alleles also reached the hybridogens, which should be considered non-native as well. Potentially initiated during antic times, this hybrid swarm likely extends all over W-Europe and rises among the largest amphibian invasions documented on the old continent. Invasion genomics thus hold great promises to reliably inform conservationists, especially in animal groups for which conventional genetic markers may not always be diagnostic between closely-related, morphologically similar species.

中文翻译：

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入侵基因组学支持西欧古老的池蛙杂交群

摘要

RAD测序之类的基因组工具可以提供解析力，以了解隐性生物学入侵背后的复杂遗传模式。在这里，我们用这个方法由意大利池蛙（澄清猖獗入侵的遗传后果黑斑侧褶bergeri）阿尔卑斯山以北，威胁本地P. lessonae及其hybridogenetic混合P.荸荠。遗传结构的模式与大规模的基因渗入一致，除了瑞士一个孤立的山谷（Joux）。此外，外来等位基因也到达了杂交原，也应被认为是非天然的。这种杂种群可能是在滑稽时期发起的，很可能遍及整个欧洲，并在旧大陆记载的最大的两栖动物入侵中上升。因此，入侵基因组学有望为可靠的保护主义者提供可靠的信息，尤其是在动物类群中，常规遗传标记可能并不总是能在密切相关，形态相似的物种之间进行诊断。