Batesian mimicry, a type of deceptive pollination, is a complicated strategy used by nonrewarding plants to attract pollinators, but some hypotheses concerning this have not been systematically verified. In order to show in detail a case of Batesian mimicry on saprophytic orchid Danxiaorchis yangii, the ecological relationship between Danxiaorchis yangii, Lysimachia alfredi and Dufourea spp. was explored. Lysimachia alfredi could provide a reward to Dufourea sp., whereas Danxiaorchis yangii not. The floral morphology and geographical distribution of these two plants were highly overlapping, and the fruit set rate of Danxiaorchis yangii was significantly positively correlated with the number of nearby L. alfredi individuals. In a glass cylinder experiment, Danxiaorchis yangii and L. alfredi attracted Dufourea spp. through visual signals, but the insect could not distinguish between flowers of the two plants before landing on flowers. The ultraviolet reflection spectra of flowers between the two plant species were highly similar. In the hexagonal color models constructed according to the visual characteristics of bees, the flower color signals of these two plant species highly overlap, indicating that the visual signals of the flowers of the two plants to the pollinator were greatly similar. All of these results provided evidence that Danxiaorchis yangii simulated the visual signals of L. alfredi through Batesian mimicry, thereby deceptively attracting Dufourea spp.

中文翻译：

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非奖励腐生兰花丹霞草的贝茨拟态

贝氏拟态模仿是一种欺骗性授粉，是一种非奖励植物用来吸引授粉媒介的复杂策略，但有关这一假设的一些假设尚未得到系统验证。为了详细显示腐生兰花Danxiaorchis yangii上的贝茨拟态实例，研究了Danxiaorchis yangii，Lysimachia alfredi和Dufourea spp之间的生态关系。被探索了。珍珠alfredi可以提供一个奖励Dufourea属，而Danxiaorchis yangii没有。两种植物的花的形态和地理分布高度重叠，并且丹霞草的坐果率与附近的L. alfredi个体的数量显着正相关。在玻璃圆筒实验，Danxiaorchis yangii和L. alfredi吸引Dufourea属。通过视觉信号，但昆虫在落在花上之前无法区分两种植物的花。两种植物之间的花朵的紫外线反射光谱非常相似。在根据蜜蜂的视觉特征构建的六边形颜色模型中，这两种植物的花色信号高度重叠，表明这两种植物的花对传粉者的视觉信号非常相似。所有这些结果提供了证据，表明Danxiaorchis yangii通过Batesian拟态模拟了L. alfredi的视觉信号，从而欺骗性地吸引了Dufourea spp。