Variation in adult stress resistance does not explain vulnerability to climate change in copper butterflies
Variation in adult stress resistance does not explain vulnerability to climate change in copper butterflies
复制标题
成年铜蝴蝶抗压能力的变化并不能解释铜蝴蝶对气候变化的脆弱性
DOI：
10.1111/1744-7917.12456
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发表时间：
2018
期刊：
影响因子：
4
通讯作者：
K. Fischer
中科院分区：
文献类型：
--
作者：
Klockmann;Wallmeyer;K. Fischer
持续的气候变化是对生物多样性的重大威胁。然而，尽管许多物种显然受到持续气候变化的影响，但其他物种却从中受益，例如，通过显示范围扩张。然而，哪些具体特征决定了一个物种对气候变化的脆弱性？表型可塑性，这已被描述为抵御环境变化的第一道防线，可能是最重要的。在这种背景下，我们在这里比较可塑性的压力耐受性在3铜蝴蝶物种，这可以说是不同的脆弱性，气候变化。具体而言，我们调查了热，冷和干燥适应后，在成虫阶段的不同温度。我们证明，在较高的温度下驯化增加热，但降低耐寒性和耐干燥性。与我们的预测相反，物种并没有表现出明显的变化，在应力抵抗，虽然在温度应力抵抗的塑性能力不同物种。总的来说，我们的结果似乎反映了种群而不是物种特异性模式。我们的结论是，即使在比较研究中，也应考虑所用人群的地理来源。然而，我们的研究结果表明，在这里研究的3个物种中，对气候变化的脆弱性并不是首先由成年阶段的抗逆性决定的。由于昆虫学研究往往只关注成虫，我们认为，在试图了解昆虫对环境变化的反应时，应致力于其他发育阶段的研究。
Ongoing climate change is a major threat to biodiversity. However, although many species clearly suffer from ongoing climate change, others benefit from it, for example, by showing range expansions. However, which specific features determine a species’ vulnerability to climate change? Phenotypic plasticity, which has been described as the first line of defence against environmental change, may be of utmost importance here. Against this background, we here compare plasticity in stress tolerance in 3 copper butterfly species, which differ arguably in their vulnerability to climate change. Specifically, we investigated heat, cold and desiccation resistance after acclimatization to different temperatures in the adult stage. We demonstrate that acclimation at a higher temperature increased heat but decreased cold tolerance and desiccation resistance. Contrary to our predictions, species did not show pronounced variation in stress resistance, though plastic capacities in temperature stress resistance did vary across species. Overall, our results seemed to reflect population—rather than species‐specific patterns. We conclude that the geographical origin of the populations used should be considered even in comparative studies. However, our results suggest that, in the 3 species studied here, vulnerability to climate change is not in the first place determined by stress resistance in the adult stage. As entomological studies focus all too often on adults only, we argue that more research effort should be dedicated to other developmental stages when trying to understand insect responses to environmental change.
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