SPEED OF ADAPTATION AND GENOMIC FOOTPRINTS OF HOST–PARASITE COEVOLUTION UNDER ARMS RACE AND TRENCH WARFARE DYNAMICS
SPEED OF ADAPTATION AND GENOMIC FOOTPRINTS OF HOST–PARASITE COEVOLUTION UNDER ARMS RACE AND TRENCH WARFARE DYNAMICS
复制标题
军备竞赛和堑壕战动态下寄主寄生物共同进化的适应速度和基因组足迹
DOI:
10.1111/evo.12427
复制
发表时间:
2014
期刊:
影响因子:
3.3
通讯作者:
W. Stephan
中科院分区:
文献类型:
--
作者:
A. Tellier;S. Moreno–Gámez;W. Stephan
Coevolution between hosts and their parasites is expected to follow a range of possible dynamics, the two extreme cases being called trench warfare (or Red Queen) and arms races. Long-term stable polymorphism at the host and parasite coevolving loci is characteristic of trench warfare, and is expected to promote molecular signatures of balancing selection, while the recurrent allele fixation in arms races should generate selective sweeps. We compare these two scenarios using a finite size haploid gene-for-gene model that includes both mutation and genetic drift. We first show that trench warfare do not necessarily display larger numbers of coevolutionary cycles per unit of time than arms races. We subsequently perform coalescent simulations under these dynamics to generate sequences at both host and parasite loci. Genomic footprints of recurrent selective sweeps are often found, whereas trench warfare yield signatures of balancing selection only in parasite sequences, and only in a limited parameter space. Our results suggest that deterministic models of coevolution with infinite population sizes do not predict reliably the observed genomic signatures, and it may be best to study parasite rather than host populations to find genomic signatures of coevolution, such as selective sweeps or balancing selection.
登录
查看更多内容
影响因子:
3.2
作者:
T. Ye;Rong‐Cai Yang;F. Yeh
通讯作者:
F. Yeh
影响因子:
1.3
作者:
ANGELA E.R. Taylor;R. Muller
通讯作者:
R. Muller
影响因子:
4.5
作者:
Obbard DJ;Welch JJ;Kim KW;Jiggins FM
通讯作者:
Jiggins FM
影响因子:
1.5
作者:
Haldane, J. B. S.;Jayakar, S. D.
通讯作者:
Jayakar, S. D.
影响因子:
8.8
作者:
M. Salathé;A. Scherer;S. Bonhoeffer
通讯作者:
S. Bonhoeffer