Pollinator preference and pollinator-mediated competition united to shape the floral color assembly along altitudes in Taiwan
作者单位：Institute of Ecology and Evolutionary BiologyNational Taiwan University Department of EntomologyNational Taiwan University
会议名称：《中国植物学会第十六次全国会员代表大会暨85周年学术年会》
会议日期：2018年
关 键 词：Pollinator preference Pollinator-mediated competition Floral color assembly Reflectance spectrums Bee color vision Phylogenetic structure Phylogenetic signal
摘 要：A classic view asserted that floral color assembly could be shaped by the pollinator ***,the floral color assembly could be alternatively explained by competition for pollinators they ***,we analyzed the floral color assembly from low altitude to alpine region in a subtropical island Taiwan,through the bee perceptual color space,in an effort to evaluate whether these two models could compatibly account for the floral color assembly along *** found that the diversity of the floral colors in middle（1500-2200 m） and high altitudes（over 2850 m） were significantly lower than that of low altitude regions（below 900 m）,which could be partly explained by the declined abundance of pollinators with increasing ***,the chromatic signals of the alpine species most fit with the discrimination ability of bees’ vision,which suggested that bees might be the most important pollinator in the subtropical alpine *** addition,the alpine species exhibited larger divergence of the floral colors than expected by chance,but no similar trends were observed in low and middle *** considering phylogenetic structure,sympatric alpine species tend to be phylogenetically related（clustering） but floral colors of related species tend to be diverse（weak phylogenetic signal）.This suggested that the related alpine species may evolve different floral colors to reduce the interspecific competition for limited ***,our results first demonstrated that the floral color assembly along altitudes in a subtropical island could respectively adapted to the pollinator preference model and competition mode.