澳门金沙平台开户网址是多少:A pinch of power

 作者:郗饿     |      日期:2019-03-07 08:06:11
SIZE is not that important—at least for fighting shore crabs ( Carcinus maenas). Researchers at the Roslin Institute near Edinburgh watched crabs fighting and found that the strength of their claws is more important than their size. This explains why tiny crabs attack larger opponents they have no chance of defeating (Journal of Zoology, vol 250, p 397). Male shore crabs fight over food, pinching each other to test their strength without causing injury. “The crabs don’t have an initial display, but get straight into fighting,