Pollinator and mating system isolation are less frequent,with the former arising when the focal species is numerically dominant but does not fully use the array of available animal pollinators (11).

• 花粉及杂交系统隔离并不经常发生，花粉隔离随优势种在数字上占优势而出现，但并不完全利用一系列的有利于传粉的动物(11)。