Rapid differentiation of plasticity in life history and morphology during invasive range expansion and concurrent local adaptation in the horned beetle Onthophagus taurus
Rapid differentiation of plasticity in life history and morphology during invasive range expansion and concurrent local adaptation in the horned beetle Onthophagus taurus
复制标题
DOI：
10.1111/evo.14045
复制
发表时间：
2020-06
期刊：
影响因子：
3.3
通讯作者：
P. Rohner;A. Moczek
中科院分区：
文献类型：
--
作者：
P. Rohner;A. Moczek
在适应环境变化的过程中，了解遗传分化、祖先可塑性和可塑性进化之间的相互作用对于预测种群对环境变化的反应至关重要。然而，可塑性在自然界快速适应中的作用仍然知之甚少。本文以半个世纪以来美国金牛角甲虫的入侵为例，研究祖先的可塑性和入侵后塑料反应的进化在种群快速分化中的作用。我们记录了生活史和形态的纬度变化，包括发育时间和体型的遗传补偿，可能是对北方季节限制的适应性反应。然而，克隆发育时间和大小的变化强烈依赖于饲养温度，这表明可塑性的种群分化在生态时间尺度上的成功适应中起着关键作用。翼形的倾斜性变异与祖先的可塑性无关，但与衍生的可塑性相关，与进化上的相互依赖一致。相比之下，胫骨形状的斜面变化与热塑性的一致性较差。总体而言，这项研究表明，入侵后可塑性的进化有助于范围的扩大和对新气候条件的同时适应。
Understanding the interplay between genetic differentiation, ancestral plasticity, and the evolution of plasticity during adaptation to environmental variation is critical to predict populations’ responses to environmental change. However, the role of plasticity in rapid adaptation in nature remains poorly understood. We here use the invasion of the horned beetle Onthophagus taurus in the United States during the last half century to study the contribution of ancestral plasticity and post‐invasion evolution of plastic responses in rapid population differentiation. We document latitudinal variation in life history and morphology, including genetic compensation in development time and body size, likely adaptive responses to seasonal constraints in the North. However, clinal variation in development time and size was strongly dependent on rearing temperature, suggesting that population differentiation in plasticity played a critical role in successful adaptation on ecological timescales. Clinal variation in wing shape was independent of ancestral plasticity, but correlated with derived plasticity, consistent with evolutionary interdependence. In contrast, clinal variation in tibia shape aligned poorly with thermal plasticity. Overall, this study suggests that post‐invasion evolution of plasticity contributed to range expansions and concurrent adaptation to novel climatic conditions.