Local adaptation and the geometry of host-parasite coevolution
Local adaptation and the geometry of host-parasite coevolution
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DOI：
10.1046/j.1461-0248.2002.00305.x
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发表时间：
2002-03-01
期刊：
影响因子：
8.8
通讯作者：
Gandon, S
中科院分区：
文献类型：
--
作者：
Gandon, S
种群动态可以强烈影响宿主-寄生虫相互作用所涉及的生态和进化过程。在这里，我分析了确定性的宿主-寄生虫协同进化模型，并得出了局部适应水平的解析近似值，作为（1）宿主迁移率、（2）寄生虫迁移率、（3）寄生虫特异性和（4）寄生虫毒力的函数。该分析证实了先前模拟研究的结果，即宿主和寄生虫迁移率之间的差异可以解释这两个物种的局部适应水平。我还表明，较高的特异性和较高的毒力通常会导致已经在共同进化军备竞赛中处于领先地位的物种具有更高水平的局部适应能力。本分析还为局部适应提供了简单的几何解释，捕捉了宿主-寄生虫协同进化的时间动态的复杂性。
Metapopulation dynamics can strongly affect the ecological and evolutionary processes involved in host-parasite interactions. Here, I analyse a deterministic host-parasite coevolutionary model and derive analytic approximations fur the level of local adaptation as a function of (1) host migration rate, (2) parasite migration rate, (3) parasite specificity and (4) parasite virulence. This analysis confirms the results of previous simulation studies the difference between host and parasite migration rates may explain the level of local adaptation of both species. I also show that both higher specificity and higher virulence generally lead to higher levels of local adaptation Of the species which is already ahead in the coevolutionary arms race. The present analysis also provides a simple geometric interpretation for local adaptation which captures the complexity of the temporal dynamics of host-parasite coevolution.