" Above all , for this explanation to be true , the authors would have to show that tabanid fly bites are a major selection pressure on zebras , but not on horses and donkeys found elsewhere in the world ...... none of which are stripy , " he told bbc nature .

他告诉bbc自然频道：“总之，为了进一步证明这个假设的真实性，作者还不得不证实虻蝇叮咬是造成斑马进化的主要原因，而这点在马和驴子身上看不到的，因为他们没有一个是条纹皮毛的。”