With no natural predators on the island, the herd increased rapidly.
由于岛上没有天然食肉动物，牧群的数量迅速增加。
I mean, doesn't it attract more predators?
我的意思是，它不会吸引更多的捕食者吗？
How do predators affect populations of the prey animals?
捕食者如何影响猎物的数量？
Of course, hungry predators sometimes ignore the warning.
当然，饥饿的捕食者有时会忽视这种警告。
The major concern of the snowshoe hare in the winter is predators.
雪靴野兔冬天最大的担忧是捕食者。
Over time animals have developed many ways to stay away from 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。
Two factors appear to be generating the cycle: food plants and predators.
产生这种循环的因素有两个：食用植物和食肉动物。
With a decline in starfish predators, the starfish population can increase.
随着海星捕食者的减少，海星的数量会增加。
All that movement makes it hard for predators to see individuals in a large group.
所有这些运动使得捕食者很难在一个大群体中看到个体。
The octopus is prey to many species, including humans, so how does it escape its predators?
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？
Greenstone suggested that predators may select food items according to their nutrient contents.
格林斯通认为，捕食者可能会根据食物的营养成分来选择食物。
Presumably, the more often it wanders from home, the more it's likely to be exposed to predators.
推测来讲，它离家越频繁，就越有可能暴露在捕食者面前。
Sometimes a sudden shift in color can be used to startle potential predators or threaten intruders.
有时候，色彩的快速变换可以用来惊吓掠食者或威胁入侵者。
The bats are able to avoid other predators, and locate prey—typically insects that fly around at night.
蝙蝠能避开其他捕食者，找到猎物——通常是夜间飞行的昆虫。
Wild pigs attracted golden eagles from the mainland, and those flying predators crashed the fox population.
岛上的野猪引来了大陆的金雕，这些飞行的捕食者们导致岛屿灰狐的数量大幅下降。
Given that predators can make it costly to beg for food, what benefit do begging nestlings derive from their communications?
既然捕食者可以让雏鸟为食物付出巨大代价，那么乞食的雏鸟们到底可以从这种交流方式中得到什么益处呢？
Removing waterfowl-nest predators could affect songbird nesting success through subsequent increases in small-mammal populations.
清除水禽巢捕食者可能会通过随后小哺乳动物数量的增加影响鸣禽筑巢的成功。
Moose reached Isle Royale in Lake Superior by crossing over winter ice and multiplied freely there in isolation without predators.
麋鹿穿过冬天的冰雪，到达苏必利尔湖的皇家岛，在那里，它们没有天敌，自由繁殖。
This is a huge advantage for the snowshoe hare since, by contrast, the feet of its predators usually sink right down into the snow.
这是雪鞋兔的一个巨大的优势，因为相比之下，它的捕食者的脚通常会陷进雪里。
The manticore is the most fearsome of Pandoran predators, and by the look, it might be the toughest carnivore in the known universe.
蝎尾兽是潘多拉星球上最可怕的食肉动物，从外表上看，它可能是已知宇宙中最强悍的食肉动物。
ladybird larvae are among the biggest friends we gardeners have. They're ferocious predators on problem whitefly and red spider mite.
幼瓢虫就是园丁们最大的朋友之一，它们是凶猛的食肉动物，专门对付白粉虱和红蜘蛛螨。
The bright red color of a fire urchin warns predators that its spines are poisonous. Sea otters are the major predators of sea urchins.
火海胆鲜红的颜色警告捕食者它的刺有毒。海獭是海胆的主要捕食者。
Initially unrestrained by predators of their own, foreign predators are likely to be able to multiply rapidly and overwhelm intended targets.
外来掠食者最初不受自身掠食者的限制，它们可能会迅速繁殖并击溃预定目标。
There have been numerous well-documented extinctions of indigenous species caused by the introduction of non-indigenous predators and pathogens.
由于引入了非本地的捕食者和病原体，已经有许多本土物种灭绝的记录，证据确凿。
Most predators of waterfowl nests prey opportunistically on songbird nests, and removing these predators could directly increase songbird nesting success.
大多数水鸟的捕食者都有机会捕食鸣禽的巢穴，而消灭这些捕食者可以直接提高鸣禽筑巢的成功率。
A decade ago, this island's ecosystem was in chaos. Wild pigs attracted golden eagles from the mainland, and those flying predators crashed the fox population.
十年前，这个岛的生态系统处于混乱状态，野猪吸引了来自大陆的金雕，而那些飞行的捕食者又使狐狸的数量锐减。
Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems.
数学模型也揭示了食物网可能是不稳定的，顶级肉食性动物的微小改变会对整个生态系统产生巨大影响。
Play allows a young animal to explore its environment and practice skill in comparative safety since the surrounding adults generally do not expect the young to deal with threats or predators.
玩耍可以让一只小动物探索环境并在相对安全的环境中练习技能，因为周围的成年动物通常不期望幼崽应对威胁或捕食者。
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