Intercontinental genomic parallelism in multiple adaptive radiations
Intercontinental genomic parallelism in multiple adaptive radiations
复制标题
多种自适应辐射中的洲际基因组并行性
DOI:
10.1101/856344
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Magalhaes I
中科院分区:
文献类型:
--
作者:
Magalhaes I
Parallelism, the evolution of similar traits in populations diversifying in similar conditions, provides good evidence of adaptation by natural selection. Many studies of parallelism have focused on comparisons of strongly different ecotypes or sharply contrasting environments, defineda priori, which could upwardly bias the apparent prevalence of parallelism. Here, we estimated genomic parallelism associated with individual components of environmental and phenotypic variation at an intercontinental scale across four adaptive radiations of the three-spined stickleback (Gasterosteus aculeatus), by associating genome-wide allele frequencies with continuous distributions of environmental and phenotypic variation. We found that genomic parallelism was well predicted by parallelism of phenotype-environment associations, suggesting that a quantitative characterization of phenotypes and environments can provide a good prediction of expected genomic parallelism. Further, we examined the explanatory power of genetic, phenotypic, and environmental similarity in predicting parallelism. We found that parallelism tended to be greater for geographically proximate, genetically similar radiations, highlighting the significant contingency of standing variation in the early stages of adaptive radiations, before new mutations accumulate. However, we also demonstrate that distance within multivariate environmental space predicts parallelism, after correction for genetic distance. This study thus demonstrates the relative influences of environment, phenotype and genetic contingency on repeatable signatures of adaptation in the genome.
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影响因子:
2.7
作者:
C. Martins;Fátima Jesus;A. Nogueira
通讯作者:
A. Nogueira
影响因子:
4.5
作者:
De Schamphelaere, KAC;Canli, M;Janssen, CR
通讯作者:
Janssen, CR
DOI:
10.1098/rspb.2012.2146
发表时间:
2012-12-22
期刊:
Proceedings. Biological sciences
影响因子:
--
作者:
Conte GL;Arnegard ME;Peichel CL;Schluter D
通讯作者:
Schluter D
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Kentrez Thompson;Matthew M. Osmond;D. Schluter;Kentrez Thompson
通讯作者:
Kentrez Thompson
DOI:
10.1101/265272
发表时间:
2018
期刊:
bioRxiv
影响因子:
--
作者:
A. Jacobs;Madeleine Carruthers;A. Yurchenko;N. Gordeeva;S. S. Alekseyev;O. Hooker;Jong S Leong;E. Rondeau;B. Koop;C. Adams;K. Elmer
通讯作者:
K. Elmer