Migrating red crabs get a sugar rush

摘要

Claws aloft they flow in a vast carpet of red, across busy roads, through shops and over the island's golf course. The annual march of the Christmas Island red crabs has been described as one of the most spectacular animal migrations on Earth.rnNow researchers have identified some of the metabolic changes that occur to transform tens of millions of red crabs from inactive, antisocial creatures that hide in their burrows into an unstoppable sea of individuals capable of walking for several days on end in order to fulfil their desire to reproduce.