History of the terrestrial isopod genus Ligidium in Japan based on phylogeographic analysis.

BMC Ecology and Evolution Pub Date : 2023-08-07 DOI:10.1186/s12862-023-02144-8

Wakana Harigai, Aya Saito, Chika Zemmoto, Shigenori Karasawa, Touta Yokoi, Atsushi J Nagano, Hitoshi Suzuki, Masanobu Yamamoto

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Abstract

Background: Phylogeographical approaches explain the genetic diversity of local organisms in the context of their geological and geographic environments. Thus, genetic diversity can be a proxy for geological history. Here we propose a genus of woodland isopod, Ligidium, as a marker of geological history in relation to orogeny and the Quaternary glacial cycle.

Results: Mitochondrial analysis of 721 individuals from 97 sites across Japan revealed phylogenetic divergence between the northeastern and southwestern Japan arcs. It also showed repeated population expansions in northeastern Japan in response to Quaternary glacial and interglacial cycles. Genome-wide analysis of 83 selected individuals revealed multiple genetic nuclear clusters. The genomic groupings were consistent with the local geographic distribution, indicating that the Ligidium phylogeny reflects its regional history.

Conclusion: Ligidium DNA sequence analysis can provide insight into the geological, geographical, and paleoenvironmental history of the studied region.

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基于系统地理分析的日本陆生等足动物liidium属的历史。

背景:系统地理学方法解释了当地生物在其地质和地理环境背景下的遗传多样性。因此，遗传多样性可以作为地质历史的代表。在这里，我们提出了一个林地等足动物属，Ligidium，作为与造山运动和第四纪冰川旋回有关的地质历史的标志。结果:对来自日本97个地点的721个个体的线粒体分析揭示了日本东北部和西南部弧形的系统发育差异。该研究还表明，日本东北部的人口在第四纪冰期和间冰期循环中反复扩张。83个个体的全基因组分析显示了多个遗传核簇。基因组分组与当地地理分布一致，表明Ligidium系统发育反映了其地域性历史。结论:Ligidium DNA序列分析可以为研究区域的地质、地理和古环境史提供依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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BMC Ecology and Evolution

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