Modelling the arms race in avian brood parasitism
Modelling the arms race in avian brood parasitism
复制标题
模拟禽类寄生的军备竞赛
DOI：
10.1023/a:1006520323251
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发表时间：
1998
影响因子：
1.9
通讯作者：
F. Takasu
中科院分区：
文献类型：
--
作者：
F. Takasu
在育雏寄生中，寄生虫与其宿主之间的相互作用导致了一个共同进化的过程，称为军备竞赛，其中一方的进化进展引发了另一方的进一步反应。宿主进化出防御手段来减少寄生的影响，而寄生虫则进化出对抗宿主防御的手段。为了深入了解军备竞赛的共同进化过程，开发和分析了一个模型，其中主机的防御和寄生虫的反击被认为是遗传决定的。首先，分析了寄生虫反防御对宿主防御的影响。我表明，寄生虫的反防御可以严重影响主机防御的建立，在平衡状态下产生三种情况：主机显示（1）没有防御，（2）中等水平的防御或（3）完美的防御。基于这些结果，寄生虫的反击被认为是与主机防御的演变。有人认为，寄生虫可以进化到一定程度的反防御，但一旦它建立了反防御超过这一点，主机放弃其防御寄生提供防御需要一些成本来执行。选择压力的动态方面对这些结果至关重要。基于这些结果，我提出了一个假设的进化序列的军备竞赛，沿着主机和寄生虫之间的相互作用进行。
In brood parasitism, interactions between a parasite and its host lead to a co-evolutionary process called an arms race, in which evolutionary progress on one side provokes a further response on the other side. The host evolves defensive means to reduce the impact of parasitism, while the parasite evolves means to counter the host's defence. To gain insights into the co-evolutionary process of the arms race, a model is developed and analysed, in which the host's defence and the parasite's counterdefence are assumed to be genetically determined. First, the effect of parasite counterdefence on host defence is analysed. I show that parasite counterdefence can critically affect the establishment of host defence, giving rise to three situations in the equilibrium state: The host shows (1) no defence, (2) an intermediate level of defence or (3) perfect defence. Based on these results, the evolution of parasite counterdefence is considered in connection with host defence. It is suggested that the parasite can evolve counterdefence to a certain degree, but once it has established counterdefence beyond this, the host gives up its defence against parasitism provided the defence entails some cost to perform. Dynamic aspects of selection pressure are crucial for these results. Based on these results, I propose a hypothetical evolutionary sequence in the arms race, along which interactions between the host and parasite proceed.
影响因子：
2.4
作者：
LOTEM, A;NAKAMURA, H;ZAHAVI, A
通讯作者：
ZAHAVI, A