Waddington Keith D
Department of Entomology, University of Kansas, 66045, Lawrence, Kansas, USA.
Oecologia. 1979 Jan;40(1):43-50. doi: 10.1007/BF00388809.
The above-ground heights of inflorescences of 8 species of wild-flowers in a subalpine meadow in the Colorado Rocky Mountains were measured in two successive years. An index of overlap (of height-distributions) was computed for pairwise comparisons of all species. The species were assorted into 4 groups based on their usual pollinators: long-tongued bumblebees (3 species were pollinated by long-tongued bumblebees), short-tongued bumblebees (3 species), hummingbirds (1 species), and solitary bees (1 species). The values of the sample of overlap indices for plants pollinated by the same animals was significantly smaller than the values for plants pollinated by different animals; plants which share pollinators are less alike in height than those that don't share pollinators. It is suggested that this is a result of selection for enhancement of pollinator fidelity. The selective mechanisms, based on the 'horizontal' flight pattern of pollinators and the consequences to the plant of interspecific flights, are discussed.
在科罗拉多落基山脉的一个亚高山草甸中，连续两年测量了8种野花的花序地上高度。计算了所有物种两两比较的（高度分布）重叠指数。这些物种根据其常见传粉者被分为4组：长舌熊蜂（3种由长舌熊蜂传粉）、短舌熊蜂（3种）、蜂鸟（1种）和独居蜂（1种）。由相同动物传粉的植物的重叠指数样本值显著小于由不同动物传粉的植物的重叠指数值；共享传粉者的植物在高度上比不共享传粉者的植物差异更小。有人认为，这是为提高传粉者忠诚度而进行选择的结果。文中讨论了基于传粉者“水平”飞行模式以及种间飞行对植物的影响的选择机制。
