The Stability of Predator‐Prey Systems
The Stability of Predator‐Prey Systems
复制标题
捕食者-被捕食者系统的稳定性
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
M. Slatkin
中科院分区：
文献类型：
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作者：
J. M. Smith;M. Slatkin
捕食者和被捕食物种之间的相互作用已经分析了计算机模拟的模型中，有离散的繁殖季节，由冬季，在此期间，捕食者必须能够找到猎物在一定的最低速率或挨饿。该模型旨在代表一个温血脊椎动物捕食者和它的猎物。主要结论如下：（1）捕食者和被捕食者是可能共存的，但如果是这样的话，存在的被捕食者的数量将不会大大低于没有捕食者时的平衡数量。捕食者和被捕食者的相互调节，后者大大低于环境的承载能力，是不稳定的。(2)如果不同个体的捕食者之间的狩猎能力存在差异，例如年轻和年老的捕食者之间，共存的可能性更大。(3)对猎物的掩护使猎物物种能够在捕食者灭绝后生存下来，但并不使共存更有可能。
The interactions between a predator and prey species have been analyzed by computer simulation of a model in which there are discrete breeding seasons, separated by a winter during which the predator must be able to find prey at a certain minimum rate or starve. The model is intended to represent a warm-blooded vertebrate predator and its prey. The main conclusions are: (1) Coexistence of predator and prey is possible, but if so, the number of prey present will not be substantially below the equilibrium number in the absence of predators. Mutual regulation of predator and prey, with the latter substantially below the carrying capacity of the environment, is unstable. (2) Coexistence is more likely if there are differences in hunting ability between different individual predators-for example, between young and old predators. (3) Cover for the prey enables the prey species to survive the extinction of the predator, but does not make coexistence more likely.