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论文类型：期刊论文

发表时间：2012-02-01

发表刊物：PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS

收录刊物：SCIE、EI、Scopus

卷号：391

期号：3

页面范围：664-672

ISSN号：0378-4371

关键字：Monte Carlo simulations; Predator-prey systems; Interaction

摘要：We studied an extended predator-prey model of three interacting species in a two-dimensional lattice. Numerous factors have been taken into account in our research such as individual mobility and pursuit-evasion abilities. Our major focus is on the stochastic character of vision distribution for predator and prey. The model we made displays the features upon the population evolving through time, the spatial distribution of population, and the cross correlation of three species. What we observed showed the increase of the predators' pursuit ability works in a negative way on their population, although nature favors the predator with maximum ability during the evolution, and the increasing vision of predators causes the increase of the preys' population. And the predators' ability deficiency may lead to the extinction of their population. In addition, the results show that it is not necessary for prey to have more intelligent evasion abilities. (C) 2011 Elsevier B.V. All rights reserved.