这些小鱼很容易被鸟类捕食。
后果是打断食物链，使许多动物和捕食它们的动物饿死。
The effect was to disrupt the food chain, starving many animals and those that preyed on them.
雪靴野兔冬天最大的担忧是捕食者。
The major concern of the snowshoe hare in the winter is predators.
捕食者如何影响猎物的数量？
假设你是一只鸟，且现在周围有捕食者。
捕食性动物是一种猎食其他动物的动物。
另一种解释是防御捕食。
当然，饥饿的捕食者有时会忽视这种警告。
我的意思是，它不会吸引更多的捕食者吗？
随着海星捕食者的减少，海星的数量会增加。
With a decline in starfish predators, the starfish population can increase.
它的作用是在章鱼逃跑时分散捕食者的注意力。
It serves to distract a predator while the octopus makes its escape.
鹿被狮子捕食了。
捕食者是维持群落物种丰富多样的一个重要因素。
Predators are an essential factor in maintaining communities that are rich and diverse in species.
泡沫尝起来很糟糕，以至于捕食者再也不会这样做了。
推测来讲，它离家越频繁，就越有可能暴露在捕食者面前。
Presumably, the more often it wanders from home, the more it's likely to be exposed to predators.
随着时间的推移，动物们已经发展出许多远离捕食者的方法。
Over time animals have developed many ways to stay away from predators.
一旦摆脱了捕食压力，大体型对食草动物来说几乎没有优势。
Once rid of predation pressure, large body size is of little advantage to herbivores.
显然，它们所捕食的夜间飞行的昆虫必须找到某种识路的方法。
Obviously the night-flying insects that they prey on must find their way about somehow.
蝙蝠能避开其他捕食者，找到猎物——通常是夜间飞行的昆虫。
The bats are able to avoid other predators, and locate prey—typically insects that fly around at night.
一旦摆脱了捕食的压力，巨大的体型对食草动物没有什么好处。
Once free from predation pressure, large body size is of little advantage to herbivores.
较少的猎物数量为捕食者提供了不足的食物，导致捕食者数量减少。
Low prey population levels then provide inadequate food for the predators, causing the predator population to decrease.
章鱼是许多物种的猎物，包括人类，那么它如何逃脱捕食者的猎杀呢？
The octopus is prey to many species, including humans, so how does it escape its predators?
寄生是一种捕食者与被捕食者之间的关系，寄生者利用共生伙伴——宿主来获取食物。
Parasitism is a kind of predator-prey relationship in which one organism, the parasite, derives its food at the expense of its symbiotic associate, the host.
鹟主要捕食有翼昆虫。
狮子捕食全凭偷袭。
北极熊喜欢捕食海豹。
他们研究动物如何保护自己免受捕食者的伤害，以及哪些动物会捕食其他动物。
They study how animals protect themselves from their predators, and which animals kill other animals for food.
他们捕食的许多动物正在消失。
然而，大自然是非常聪明的，捕食者也会用颜色来吸引它们捕食的动物。
Nature, however, is very clever, and predators also use colors to attract the animals they feed on.
科学家们希望他们为这种重要的顶级捕食者——处于食物链顶端的捕食者扭转局面。
Scientists hope they can turn things around for this important apex predator, meaning one that is on top of the food chain.
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