Institute of Ecology and Evolution, University of Edinburgh, Edinburgh EH9 3FL, UK.
Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK.
G3 (Bethesda). 2022 Aug 25;12(9). doi: 10.1093/g3journal/jkac193.
The scarce swallowtail, Iphiclides podalirius (Linnaeus, 1758), is a species of butterfly in the family Papilionidae. Here, we present a chromosome-level genome assembly for Iphiclides podalirius as well as gene and transposable element annotations. We investigate how the density of genomic features differs between the 30 Iphiclides podalirius chromosomes. We find that shorter chromosomes have higher heterozygosity at four-fold-degenerate sites and a greater density of transposable elements. While the first result is an expected consequence of differences in recombination rate, the second suggests a counter-intuitive relationship between recombination and transposable element evolution. This high-quality genome assembly, the first for any species in the tribe Leptocircini, will be a valuable resource for population genomics in the genus Iphiclides and comparative genomics more generally.
珍稀燕尾蝶（Iphiclides podalirius）是凤蝶科的一种蝴蝶。在这里，我们为 Iphiclides podalirius 提供了一个染色体水平的基因组组装，以及基因和转座元件注释。我们研究了基因组特征在 30 个 Iphiclides podalirius 染色体之间的密度有何不同。我们发现，较短的染色体在四联体位点具有更高的杂合性和更多的转座元件密度。虽然第一个结果是重组率差异的预期结果，但第二个结果表明重组和转座元件进化之间存在一种反直觉的关系。这个高质量的基因组组装是 Leptocircini 部落中第一个为任何物种提供的基因组组装，将成为 Iphiclides 属群体基因组学和更广泛的比较基因组学的宝贵资源。
