Male sexual signal predicts phenotypic plasticity in offspring: implications for the evolution of plasticity and local adaptation
Male sexual signal predicts phenotypic plasticity in offspring: implications for the evolution of plasticity and local adaptation
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男性性信号预测后代的表型可塑性：对可塑性和局部适应进化的影响
DOI：
10.1098/rstb.2018.0179
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Pfennig, Karin S.
中科院分区：
文献类型：
--
作者：
Kelly, Patrick W.;Pfennig, David W.;de la Serna Buzón, Sofia;Pfennig, Karin S.
在一个快速变化的世界中，了解影响种群对自然选择做出反应的能力的过程对于确定如何保护生物多样性至关重要。两个这样的过程是表型可塑性和性选择。虽然可塑性可以促进局部适应，但性选择可能会阻碍局部适应，特别是在快速变化或多变的环境中。在这里，我们假设，当雌性优先选择繁殖可塑性后代的雄性时，性选择实际上可以通过促进适应性可塑性的进化来促进局部对可变或新环境的适应。我们通过评估男性性信号是否能指示其后代的可塑性，以及随之而来的他们的后代产生适应当地的表型的能力来检验这一假设。以铲足蟾蜍(Spea Multiicata)为实验系统，我们证明了雄性的性信号在其后代的资源利用形态中预测了可塑性。具体地说，叫声快的雄性(雌性更喜欢)会产生更多的可塑性后代；这种可塑性反过来又使这些雄性的后代能够适应铁锹高度多变的环境。男性偏好的信号与后代的适应性可塑性之间的关联表明，雌性配偶的选择有利于表型可塑性的进化和维持，从而促进对可变环境的适应。本文是主题问题《可塑性在快速环境变化的表型适应中的作用》的一部分。
In a rapidly changing world, understanding the processes that influence a population's ability to respond to natural selection is critical for identifying how to preserve biodiversity. Two such processes are phenotypic plasticity and sexual selection. Whereas plasticity can facilitate local adaptation, sexual selection potentially impedes local adaptation, especially in rapidly changing or variable environments. Here we hypothesize that, when females preferentially choose males that sire plastic offspring, sexual selection can actually facilitate local adaptation to variable or novel environments by promoting the evolution of adaptive plasticity. We tested this hypothesis by evaluating whether male sexual signals could indicate plasticity in their offspring and, concomitantly, their offspring's ability to produce locally adapted phenotypes. Using spadefoot toads (Spea multiplicata) as our experimental system, we show that a male sexual signal predicts plasticity in his offspring's resource-use morphology. Specifically, faster-calling males (which are preferred by females) produce more plastic offspring; such plasticity, in turn, enables these males' offspring to respond adaptively to the spadefoots’ highly variable environment. The association between a preferred male signal and adaptive plasticity in his offspring suggests that female mate choice can favour the evolution and maintenance of phenotypic plasticity and thereby foster adaptation to a variable environment.This article is part of the theme issue ‘The role of plasticity in phenotypic adaptation to rapid environmental change’.
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