Abstract: in this paper, a 2-dimension, nonlinear birth-death prey-predator model is established.
摘要：本文建立了一类二维非线性生灭捕食——被捕食模型。
What we study is a kind of prey-predator model with epidemic spreading in it based on agents' interactions.
我们研究的是一类基于个体相互作用的带有传染病的捕食者与被捕食者模型。
Analyzes singular points of prey-predator system and proves that the system hasn't limit cycle on whole plane surface.
对一类生物系统的奇点进行分析，并证明在整个平面上该系统不存在极限环。
In this dissertation, we are concerned with the pattern formation of some prey-predator models with reaction and diffusion from biology.
本文讨论来自于生态学中的几类反应扩散和交错扩散捕食模型的模式生成问题。
The result leads to the permanence of the prey-predator systems, the instability of the trivial and all forms of semitrivial solutions, and the nonexistence of nonuniform steady-state solutions.
这个结果导致捕食食饵系统的持久性、平凡解和所有半平凡解的不稳定性和不存在非一致平衡解。
Prey species, like young deer or goats, for example, typically play by performing sudden flight movements and turns, whereas predator species, such as cats, practice stalking, pouncing, and biting.
比如说，像小鹿或者山羊这种被捕食的种群，它们的代表动作就是突然快速逃跑的动作和突然转弯；相反的，猫科动物之类的捕食种群会练习潜行追踪、猛扑和撕咬等动作。
When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.
当实验种群在简单的实验室条件下建立起来时，捕食者往往会消灭它的猎物，然后自己也走向灭绝，因为没有东西可以吃。
Low prey population levels then provide inadequate food for the predators, causing the predator population to decrease.
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。
The elements of intelligence and consciousness come together marvelously to produce different styles in predator and prey.
智慧和意识的元素奇妙地结合在一起，在捕食者和猎物身上产生了不同的风格。
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.
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。
At night, the pit organs allow snakes to "see" an image of their predator or prey-- as an infrared camera does-- giving them a unique extra sense.
在夜晚，窝器能让蛇类“看到”捕食者或者猎物的图像——正如红外摄影机一样——赋予他们一个独特的额外感官。
In this situation, the predator and prey population may continue in this cyclical pattern for some time.
在这种情况下，捕食者和被捕食者可能会在一段时间内继续这种循环模式。
And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover.
当一种猎物变得稀有时，如果捕猎者能够转向其他更容易找到的物种，这种转变可以让原来的猎物数量得到恢复。
This unexpected display of color startles or confuses the predator and provides the would-be prey with an opportunity to escape.
这种意想不到的颜色表现会吓到捕食者或使其迷惑，并为潜在的猎物提供逃跑的机会。
When a predator always eats huge numbers of a single prey, the two species are strongly linked.
一种掠食动物经常大量捕食单单一种猎物时，这两个物种是紧密联系的。
Even if the prey had a good sensory system to notice a predator closing in, the success rate of a nocturnal attack may be higher than a diurnal attack.
即使猎物拥有很好的感知系统，注意到了食肉动物正在靠近，夜间攻击的成功率也可能比白天攻击的成功率高。
Biologists speculate that the mostly likely cause was a shift in Pacific Ocean currents, but food availability, changing river conditions and predator-prey relationships could be affecting the fish.
生物学家推测，最有可能的成因是太平洋洋流的变化，不过食物的取得、河流环境的改变、生物掠夺关系等，也都可能对鲑鱼造成影响。
He suggests that these observations of bugs predating reptiles call into question previously held opinions about predator-prey dynamics in freshwater habitats.
他认为观察到的这些昆虫捕食爬行动物的现象引发了对之前所持对淡水生境中捕食动态观点的疑问。
Now a study of broken teeth reveals that artistic licence has, at least for predator and prey, been rather accurate.
现在，一项对断裂牙齿的研究显示，艺术的想象还是很符合事实的，至少在食肉动物和猎物较量这块儿是这样。
When the echo returns to the hunting bat, the predator can glean information about the size, location and more of prey.
这些声调组成一个回声定位声波，蝙蝠接收到返回声波的时候，这个捕食者就会获得猎物的大小、位置和多少等信息。
But he thinks other pitcher plant processes - predator-prey interactions, mutually beneficial species, the effects of disturbance - are found across ecosystems.
不过，他认为，可以确定猪笼草的其它进程——捕食者-猎物互动、物种互利、骚动的影响——超越了生态系统。
Banjo and Matilda, possibly predator and prey, were found buried together.
班卓和玛蒂尔达被发现埋在一起，两者很可能分别是捕食者及其猎物。
And that predator is the giant ocean sunfish, the mola mola, whose primary prey are jellyfish.
这个捕食者就是翻车鱼，mola mola它们的主要食物就是水母。
The slinth is a large predator, fast as a cheetah, that spears its prey with its head, which is like a venomous lance.
slinth是一种大型食肉动物。
At night, the pit organs allow snakes to 'see' an image of their predator or prey - as an infrared camera does - giving them a unique extra sense.
在夜晚，窝器让蛇类“看到”捕食者或者猎物的图像——正如红外摄影机一样——赋予他们一个独特的额外感官。
Since the prey is so much larger than the predator, it sometimes takes the shrimp two weeks to finish off a single (living) starfish.
由于被捕食的动物要比捕食它们的掠夺者大得多，有时需要两个星期才能让小丑虾去吃完一个活海星。
Since the prey is so much larger than the predator, it sometimes takes the shrimp two weeks to finish off a single (living) starfish.
由于被捕食的动物要比捕食它们的掠夺者大得多，有时需要两个星期才能让小丑虾去吃完一个活海星。
应用推荐