Loss of adaptive variation during evolutionary responses to climate change
Loss of adaptive variation during evolutionary responses to climate change
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DOI：
10.1111/ele.12340
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发表时间：
2014-10-01
期刊：
影响因子：
8.8
通讯作者：
Bridle, Jon R.
中科院分区：
文献类型：
--
作者：
Buckley, James;Bridle, Jon R.
气候变化所要求的物种地理分布的变化往往受到关键相互作用物种的可获得性的严重限制。在这种情况下，物种的持久性将取决于生物相互作用的快速演变。因此，了解这种适应的进化极限对于预测生物对环境变化的反应至关重要。最近英国棕色阿格斯蝴蝶向极地范围的扩大与雌性偏好的转变有关，在整个新的分布过程中，雌性偏好从其主要寄主植物月见草科植物转移到天竺葵科寄主植物上。通过相互移植到英国各地的自然寄主植物上，我们证明了来自最近殖民的香草科占主导地位的栖息地的雌性在转移到祖先的岩花栖息地时适应性降低。相比之下，祖传岩花栖息地的个体在天竺葵科植物上的适合度并没有降低。因此，气候驱动的该物种范围的扩大与生物相互作用的快速进化和适应性变异的显著丧失有关。
The changes in species' geographical distribution demanded by climate change are often critically limited by the availability of key interacting species. In such cases, species' persistence will depend on the rapid evolution of biotic interactions. Understanding evolutionary limits to such adaptation is therefore crucial for predicting biological responses to environmental change. The recent poleward range expansion of the UK brown argus butterfly has been associated with a shift in female preference from its main host plant, rockrose (Cistaceae), onto Geraniaceae host plants throughout its new distribution. Using reciprocal transplants onto natural host plants across the UK range, we demonstrate reduced fitness of females from recently colonised Geraniaceae-dominated habitat when moved to ancestral rockrose habitats. By contrast, individuals from ancestral rockrose habitats show no reduction in fitness on Geraniaceae. Climate-driven range expansion in this species is therefore associated with the rapid evolution of biotic interactions and a significant loss of adaptive variation.