When released from the threat of predation, then, females tend to be gaudier.

一旦没有天敌的威胁，雌性就变得更花哨。

It's hard to watch these predations, but death is a crucial part of the natural cycle.

这样的捕食画面让人心酸，但生死轮回大自然的一种循环。

From an evolutionary perspective getting out there and mating would increase the odds of predation.

从进化的角度来看，外出交配会增加被捕食的几率。

Many insects, for example, use flight to avoid predation.

例如，许多昆虫通过飞来躲避捕食。

The dataset included almost 100 predation events.

该据集包括近100个捕食事件。

I collect photo identification data, predation data, social and behavioral, as well as genetic data.

我收集它们的照片识别据、捕食、社交和据以及遗传据。

And finally, predation is a more likely reason for the uneven pattern of otter decline.

最后，捕食更有可能水獭下降分布不均的原因。

The Columbia Basin Pigmy Rabbit feeds on sagebrush almost exclusively in the winter, and the loss of its sagebrush-rich habitat to agricultural development and wildfires is one of the main reasons it was declared extinct, along with predation.

哥伦比亚盆地几乎只在冬天以山艾树食，农业发展和野火失去了它丰富的山艾树栖息地，这它被宣布灭绝的主要原因之一，还有捕食。

The larger a shoal is, the smaller is the proportion of it that needs to know what is actually going on for it to feed and avoid predation effectively.

鱼群越大，需要知道接下来做什么才能有效觅食和避免危险的“领导”比例就越小。

Rewilding, as I said, about bringing back the ecosystem and for lions being an apex predator quite clearly one of the main roles is the role of predation.

就像我说的，重新野生化，了恢复生态系统狮子作顶级掠食者——很明显其中一个主要角色就捕食。

The brain structure of Albertosaurus would tell us it was able to do ambush predation, it probably had the brain power to be a pursuit predator.

阿尔伯特龙的脑部结构告诉我们它能够进伏击掠食，它很可能有足够的脑力成追击掠食者。

In Australia, there were these thylacines. There are these marsupial lions, and I think a big body size would have enabled them to escape predation.

澳大利亚有袋狼，也有袋狮，我认雷鸟巨大的体型可以让它们逃脱被捕食的命运。

But unlike snakes and other animals that use venom primarily for predation and defence, the platypus uses its venom for a different reason.

但与蛇和其他主要利用毒液捕食及防御的动物不同，鸭嘴兽使用毒液另有他因。

So what we are studying now is whether natural selection imposed by predation could explain the occurrence of iridescence in prey animals.

“因此，我们现在正在研究的，捕食所施加的自然选择否能解释猎物身上出现彩虹色的原因。”

We're looking at the overall health of each fragment for any signs of predation or disease and bleaching signs as well.

我们正在查看每个小珊瑚礁的整体健康情况，看否有任何被捕食或疾病迹象，以及白化迹象。

Which is why researchers set out to look for proof that human predation played a role in the demise of Genyornis.

因此研究人员们搜集证据，希望找出远古人类的捕猎对这种巨鸟灭绝产生的影响。

The study of coprolites tells you key information about an animal's diet and predation habits.

对粪化石的研究告诉了我们关于动物饮食和捕食习惯的关键信息。

There are these marsupial lions, and I think a big body size would have enabled them to escape predation.

还有这些有袋狮，我认大体型能让它们躲避捕猎。

So in this case there's across-protection mutualism between these two species in which they help to avoid predation.

“因此在这种情况下这两个物种就形成了互惠共生关系。”

This makes their offspring more vulnerable to predation than those of the tunnelers and rollers.

与挖道蜣螂和滚粪蜣螂相比，这种方式使它们的后代更容易遭到猎食。