这种防御机制已经为人所熟识了，而且在其他一些无脊椎动物中也有发现。 但是目前还没有报道说明是什么使得它们形成这样的机制，也不知道这是否可以有效地反抗捕食者。

This is a recognised defence mechanism and has been mentioned in other invertebrates, but no one had published on what exactly makes them do it or whether it actually is effective against predators.

youdao