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很多昆虫和动物的奇特行为,是因为它们受到了入侵其体内的寄生虫的控制。弃暗投明上世纪80年代,一位法国研究生发现了一个奇怪的现象:一群群钩虾在法国南部的海面上游荡。这是很不正常的现象,因为正常情况下,这种小型甲壳类动物只会待在海底。于是,她开始调查这是为什么。她很快发现,那些浮在海面上的钩虾的脑部都有吸虫类的寄生虫存在,而那些在海底的钩虾却没有。这一现象与上世纪70年代加拿大研究人员的发现很相似。当钩虾被一种叫棘头虫的寄生蠕虫感染时,会改变它的回避功能;不再回避亮光,而是向着有光的地方游去。
The peculiar behavior of many insects and animals is that they are under the control of parasites that invade their bodies. Discarding darkness In the 1980s, a French graduate student discovered a weird phenomenon: a group of hook shrimp wandering the sea in southern France. This is a very unusual phenomenon, because under normal circumstances, this small crustacean will only stay on the sea floor. So, she began to investigate why this is. She soon discovered that the hook shrimp that floated on the sea had parasitoid parasites in their brains, whereas those on the undersea did not. This phenomenon is very similar to the findings of Canadian researchers in the 1970s. When the shrimp is infected with a parasitic worm called Sparrowhawk, it will change its avoidance function; instead of shunning the light, it swam toward the light.