Stabilizing selection shapes variation in phenotypic plasticity
Stabilizing selection shapes variation in phenotypic plasticity
复制标题
稳定选择塑造表型可塑性的变化
DOI:
10.1101/2021.07.29.454146
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Becker D
中科院分区:
文献类型:
--
作者:
Becker D
The adaptive nature of phenotypic plasticity is widely documented in natural populations. However, little is known about the evolutionary forces that shape genetic variation in plasticity within populations. Here we empirically address this issue by testing the hypothesis that stabilizing selection shapes genetic variation in the anti-predator developmental plasticity ofDaphnia pulex. The anti-predator morphological defense is characterized by pedestal and spikes that grow on the back of theDaphnianeck following exposure to predator cure. We characterized variation in this plasticity using a novel, high-throughput phenotyping method that describes the entire dorsal shape amongst >100D. pulexstrains originating from a natural population in the UK. We found low genetic diversity for morphological defenses among genetically diverse clones upon predation risk exposure. The strongest reduction in genetic variation was observed in areas of greatest phenotypic plasticity, which we interpret as evidence of stabilizing selection. By assessing among-clone variance in clonally related, field derived strains, we contrasted mutational variation (Vm) to standing variation (Vg). We found that Vg/Vmis lowest in areas of greatest plasticity. These data strongly suggest that stabilizing selection operates directly on phenotypic plasticity, providing a rare glimpse into the evolution of fitness related traits in natural populations.
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影响因子:
2.4
作者:
N. Yan;K. Somers;R. Girard;A. M. Paterson;W. Keller;C. Ramcharan;J. Rusak;R. Ingram;G. E. Morgan;J. Gunn
通讯作者:
J. Gunn
DOI:
10.1073/pnas.1821066116
发表时间:
2019-07-02
影响因子:
11.1
作者:
Noble, Daniel W. A.;Radersma, Reinder;Uller, Tobias
通讯作者:
Uller, Tobias
影响因子:
3.3
作者:
David Houle;B. Morikawa;Michael Lynch
通讯作者:
David Houle;B. Morikawa;Michael Lynch
影响因子:
2.9
作者:
L. Latta;M. Peacock;D. Civitello;J. L. Dudycha;J. Meik;S. Schaack
通讯作者:
S. Schaack
DOI:
--
发表时间:
1994
期刊:
Evolution; international journal of organic evolution
影响因子:
--
作者:
R. Newman
通讯作者:
R. Newman