Host-parasite fluctuating selection in the absence of specificity.
Host-parasite fluctuating selection in the absence of specificity.
复制标题
DOI：
10.1098/rspb.2017.1615
复制
发表时间：
2017-11-15
期刊：
影响因子：
--
通讯作者：
Boots M
中科院分区：
文献类型：
--
作者：
Best A;Ashby B;White A;Bowers R;Buckling A;Koskella B;Boots M
由寄主和寄生虫之间的共同进化驱动的波动选择对于寄主和寄生虫跨越空间和时间的多样性的产生非常重要。理论主要集中在感染遗传学上，高度特定的“匹配等位基因”框架比“基因对基因”(通才-专家)框架更有可能产生波动的选择动态(FSD)。然而，环境、生态反馈和生活史特征都可能在决定FSD发生的时间方面发挥作用。在这里，我们开发了具有显式生态动力学的生态进化模型来探索FSD的生态、流行病学和宿主生活史驱动因素。我们的关键结果是首次证明，据我们所知，宿主和寄生虫之间的特异性不是产生FSD所必需的。此外，高度特异性的宿主-寄生虫相互作用会产生不稳定的、不那么稳健的随机波动，而不是完全缺乏特异性的相互作用，或者从多面手到专家的相互作用，后者会产生可预测的极限环。鉴于生态反馈的普遍存在和宿主-寄生虫相互作用中特异性性质的变化，我们的工作强调了宿主-寄生虫共同进化产生波动选择的潜力被低估。
Fluctuating selection driven by coevolution between hosts and parasites is important for the generation of host and parasite diversity across space and time. Theory has focused primarily on infection genetics, with highly specific ‘matching-allele’ frameworks more likely to generate fluctuating selection dynamics (FSD) than ‘gene-for-gene’ (generalist–specialist) frameworks. However, the environment, ecological feedbacks and life-history characteristics may all play a role in determining when FSD occurs. Here, we develop eco-evolutionary models with explicit ecological dynamics to explore the ecological, epidemiological and host life-history drivers of FSD. Our key result is to demonstrate for the first time, to our knowledge, that specificity between hosts and parasites is not required to generate FSD. Furthermore, highly specific host–parasite interactions produce unstable, less robust stochastic fluctuations in contrast to interactions that lack specificity altogether or those that vary from generalist to specialist, which produce predictable limit cycles. Given the ubiquity of ecological feedbacks and the variation in the nature of specificity in host–parasite interactions, our work emphasizes the underestimated potential for host–parasite coevolution to generate fluctuating selection.
登录
查看更多内容
种群混合促进武器竞赛宿主 - 寄生虫共同进化。
DOI：
10.1098/rspb.2014.2297
发表时间：
2015-01-07
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Gómez P;Ashby B;Buckling A
通讯作者：
Buckling A
影响因子：
8.8
作者：
Gandon, S
通讯作者：
Gandon, S
影响因子：
8.8
作者：
Hall, Alex R.;Scanlan, Pauline D.;Buckling, Angus
通讯作者：
Buckling, Angus
DOI：
10.1111/evo.12479
发表时间：
2014-10
期刊：
Evolution; international journal of organic evolution
影响因子：
--
作者：
Ashby B;Gupta S;Buckling A
通讯作者：
Buckling A
影响因子：
1.9
作者：
Dieckmann, U;Law, R
通讯作者：
Law, R