1 Centre for Ecology and Conservation, University of Exeter , Tremough, Penryn TR10 9FE , UK.
2 Institute of Environmental Science, Jagiellonian University , Gronostajowa 7, 30-387 Krakow , Poland.
Proc Biol Sci. 2019 May 29;286(1903):20182850. doi: 10.1098/rspb.2018.2850.
The seemingly transparent wings of many insects have recently been found to display unexpected structural coloration. These structural colours (wing interference patterns: WIPs) may be involved in species recognition and mate choice, yet little is known about the evolutionary processes that shape them. Furthermore, to date investigations of WIPs have not fully considered how they are actually perceived by the viewers' colour vision. Here, we use multispectral digital imaging and a model of Drosophila vision to compare WIPs of male and female Drosophila simulans from replicate populations forced to evolve with or without sexual selection for 68 generations. We show that WIPs modelled in Drosophila vision evolve in response to sexual selection and provide evidence that WIPs correlate with male sexual attractiveness. These findings add a new element to the otherwise well-described Drosophila courtship display and confirm that wing colours evolve through sexual selection.
最近发现，许多昆虫看似透明的翅膀呈现出意想不到的结构色。这些结构色（翅膀干涉模式：WIPs）可能与物种识别和配偶选择有关，但对于塑造它们的进化过程知之甚少。此外，迄今为止，对 WIP 的研究并未充分考虑到观察者的颜色视觉实际是如何感知它们的。在这里，我们使用多光谱数字成像和果蝇视觉模型，比较了经过 68 代有或没有性选择压力的重复种群中雄性和雌性果蝇 simulans 的 WIPs。我们表明，果蝇视觉模型中的 WIPs 会随着性选择而进化，并提供证据表明 WIPs 与雄性的性吸引力相关。这些发现为原本描述详尽的果蝇求偶展示增添了新元素，并证实翅膀颜色确实是通过性选择而进化的。
