科学家最新发现蝴蝶通过翅膀产生的光学幻觉来躲避捕食者的攻击。1一项发表在《自然》杂志上的研究表明，蝴蝶翅膀上的条纹和斑点与理发店旋转杆产生的视觉错觉原理相同。2这些图案通过干扰捕食者的视觉系统，使其难以准确判断蝴蝶的运动方向和速度。2
来自埃克塞特大学康沃尔分校的研究人员指出，捕食鸟类在进行"弹道攻击"时，数十毫秒内无法改变攻击方向。2这种时间限制使得被视觉幻觉误导的捕食者难以精确计算最终的攻击路线，从而给蝴蝶逃脱的机会。2研究还揭示了蝴蝶翅膀的结构色来自于手性几丁质鳞片形成的光子晶体而非色素分子，这些鳞片排列如同屋顶瓦片般形成衍射光栅。2
Scientists have discovered that butterflies deploy sophisticated visual deceptions encoded in their wing patterns to evade hunting birds.2 Research published in Nature reveals that the stripes and spots adorning butterfly wings operate on the same optical principle as a spinning barbershop pole, disrupting predators' ability to accurately judge the insects' direction and speed of movement.2 This neurological interference proves particularly effective during predatory attacks, as hunting birds commit to ballistic trajectories within tens of milliseconds and cannot adjust their flight path mid-strike.2
The mechanism underlying this defense strategy stems from the unique structure of butterfly wings rather than pigmentation alone.2 The wing coloration originates from photonic crystals formed by chiral chitin scales—microscopic structures arranged like roof tiles that function as diffraction gratings.2 George Hancock of the University of Exeter's Cornwall campus led the research, which demonstrates how these optical properties create the dizzying visual effects that give butterflies a crucial survival advantage against predation pressure.2
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