Institute of Technical Physics and Materials Science, Centre for Energy Research, P.O. Box 49, 1525, Budapest, Hungary.
MTA-DE "Lendület" Evolutionary Phylogenomics Research Group, 1 Egyetem Sq., 4032, Debrecen, Hungary.
Sci Rep. 2021 Aug 13;11(1):16498. doi: 10.1038/s41598-021-95881-z.
The males of more than 80% of the Lycaenidae species belonging to the tribe Polyommatini exhibit structural coloration on their dorsal wing surfaces. These colors have a role in reinforcement in prezygotic reproductive isolation. The species-specific colors are produced by the cellular self-assembly of chitin/air nanocomposites. The spectral position of the reflectance maximum of such photonic nanoarchitectures depends on the nanoscale geometric dimensions of the elements building up the nanostructure. Previous work showed that the coloration of male Polyommatus icarus butterflies in the Western and Eastern Palearctic exhibits a characteristic spectral difference (20 nm). We investigated the coloration and the de novo developed DNA microsatellites of 80 P. icarus specimens from Europe from four sampling locations, spanning a distance of 1621 km. Remarkably good concordance was found between the spectral properties of the blue sexual signaling color (coincident within 5 nm) and the population genetic structure as revealed by 10 microsatellites for the P. icarus species.
超过 80%属于 Polyommatini 部落的闪蝶科雄性物种在其背翅表面表现出结构色。这些颜色在合子前生殖隔离中起强化作用。物种特异性颜色是由几丁质/空气纳米复合材料的细胞自组装产生的。这种光子纳米结构的反射最大值的光谱位置取决于构成纳米结构的元素的纳米级几何尺寸。以前的工作表明，西方和东古北界的雄性 Polyommatus icarus 蝴蝶的颜色表现出特征性的光谱差异（20nm）。我们研究了来自欧洲四个采样地点的 80 个 P. icarus 标本的颜色和新开发的 DNA 微卫星，这些地点之间的距离为 1621km。令人惊讶的是，蓝色性信号颜色的光谱特性（在 5nm 内吻合）与 10 个微卫星揭示的 P. icarus 物种的种群遗传结构之间存在很好的一致性。
