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2 results for “Ligidium”
History of the terrestrial isopod genus Ligidium in Japan based on phylogeographic analysis
<span>Background</span> <p><span>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, <em>Ligidium</em>, as a marker of geological history in relation to orogeny and the Quaternary glacial cycle. </span></p> <span>Results</span> <p><span>Mitochondrial analysis of 721 individuals from 97 sites across Japan revealed phylogenetic divergence between the northeastern and southwestern Japan arcs from 7 to 3.5 million years ago. 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 <em>Ligidium</em> phylogeny reflects its migration history.</span></p> <span>Conclusion</span> <p><em><span>Ligidium</span></em><span> DNA sequence analysis can provide insight into the geological, geographical, and paleoenvironmental history of the studied region.</span></p>
History of the terrestrial isopod genus Ligidium in Japan based on phylogeographic analysis
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