Yoda Shinichi, Sakakura Kousuke, Kitamura Tasuku, KonDo Yûsuke, Sato Kazuki, Ohnuki Ryosuke, Someya Itsuki, Komata Shinya, Kojima Tetsuya, Yoshioka Shinya, Fujiwara Haruhiko
Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan.
Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan.
Sci Adv. 2021 Jan 8;7(2). doi: 10.1126/sciadv.abd6475. Print 2021 Jan.
In a Batesian mimic butterfly , mimetic females resemble an unpalatable model, , but exhibit a different color pattern from nonmimetic females and males. In particular, the pale-yellow region on hind wings, which correspondingly sends important putative signals for mimicry and mate preference, is different in shape and chemical features between nonmimetic and mimetic morphs. Recently, we found that mimetic-type [] causes mimetic traits; however, the control of dimorphic pale-yellow colors remains unclear. Here, we revealed that switched the pale-yellow colors from UV-excited fluorescent type (nonmimetic) to UV-reflecting type (mimetic), by repressing the papiliochrome II synthesis genes and nanostructural changes in wing scales. Photoreceptor reactivities showed that some birds and butterflies could effectively recognize mimetic and nonmimetic pale-yellow colors, suggesting that a genetic switch in the UV response of pale-yellow colors may play essential roles in establishing the dimorphic female-limited Batesian mimicry.
在贝氏拟态蝴蝶中，拟态雌性类似于一种不可口的模型，但与非拟态雌性和雄性呈现出不同的颜色模式。特别是后翅上的浅黄色区域，相应地发出用于拟态和配偶偏好的重要假定信号，在非拟态和拟态形态之间，其形状和化学特征有所不同。最近，我们发现拟态类型[ ]导致了拟态特征；然而，双态浅黄色颜色的控制仍不清楚。在这里，我们揭示了通过抑制凤蝶色素II合成基因和翅鳞片的纳米结构变化，将浅黄色颜色从紫外线激发荧光型（非拟态）转变为紫外线反射型（拟态）。光感受器反应表明，一些鸟类和蝴蝶能够有效识别拟态和非拟态浅黄色颜色，这表明浅黄色颜色紫外线反应中的基因开关可能在建立双态雌性受限的贝氏拟态中起重要作用。
