基于系统地理分析的日本陆生等足目 Ligidium 属的历史。

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

机构信息

Graduate School of Environmental Science, Hokkaido University, Kita-Ku, Sapporo, 060-0810, Japan.

Present address: Department of Child Development and Molecular Brain Science, United Graduate School of Child Development, Osaka University, Suita, 565-0871, Japan.

出版信息

BMC Ecol Evol. 2023 Aug 7;23(1):38. doi: 10.1186/s12862-023-02144-8.

DOI:10.1186/s12862-023-02144-8

PMID:37550609

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10405464/

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.

摘要

背景

系统发生地理学方法从地质和地理环境的角度解释了当地生物的遗传多样性。因此，遗传多样性可以作为地质历史的代表。在这里，我们提出林地等足目动物 Ligidium 作为与造山运动和第四纪冰川周期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显示，日本东北和西南弧形结构之间存在系统发育分歧。它还显示，日本东北部地区对第四纪冰川和间冰期循环的反应出现了种群的反复扩张。对 83 个选定个体的全基因组分析揭示了多个遗传核群。基因组分组与当地地理分布一致，表明 Ligidium 的系统发育反映了其区域历史。