High-Arctic butterflies become smaller with rising temperatures
High-Arctic butterflies become smaller with rising temperatures
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DOI：
10.1098/rsbl.2015.0574
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发表时间：
2015-10-01
期刊：
影响因子：
3.3
通讯作者：
Hoye, Toke T.
中科院分区：
文献类型：
--
作者：
Bowden, Joseph J.;Eskildsen, Anne;Hoye, Toke T.
身体大小对温度升高的反应构成了对气候变化的普遍反应，可能会强烈影响陆生外温动物，但这种反应的幅度和方向在大多数物种中仍然未知。温度升高的代谢成本可能会减少身体的大小，但长的生长季节也可能增加身体的大小，最近在北极蜘蛛物种中显示。在这里，我们提出了已知的最长的时间序列的身体大小变化在两个高北极蝴蝶物种：Boloria chariclea和Colias hecla。我们测量了1996年至2013年期间每年从格陵兰岛Zackenberg收集的近4500只个体的翅长，发现两个物种的翅长以相似的速度显着减少，以应对温暖的夏季。身体大小与扩散能力和繁殖力密切相关，我们的研究结果表明，这些北极物种可能面临严峻的挑战，以应对持续快速的气候变化。
The response of body size to increasing temperature constitutes a universal response to climate change that could strongly affect terrestrial ectotherms, but the magnitude and direction of such responses remain unknown in most species. The metabolic cost of increased temperature could reduce body size but long growing seasons could also increase body size as was recently shown in an Arctic spider species. Here, we present the longest known time series on body size variation in two High-Arctic butterfly species: Boloria chariclea and Colias hecla. We measured wing length of nearly 4500 individuals collected annually between 1996 and 2013 from Zackenberg, Greenland and found that wing length significantly decreased at a similar rate in both species in response to warmer summers. Body size is strongly related to dispersal capacity and fecundity and our results suggest that these Arctic species could face severe challenges in response to ongoing rapid climate change.