Climate change-driven body size shrinking in a social wasp
Climate change-driven body size shrinking in a social wasp
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DOI：
10.1111/een.12781
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发表时间：
2019-07-17
影响因子：
2.2
通讯作者：
Sanchez-Fernandez, David
中科院分区：
文献类型：
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作者：
Polidori, Carlo;Gutierrez-Canovas, Cayltano;Sanchez-Fernandez, David
1.预计气候变化将使物种分布以及行为、生活史和/或形态适应发生变化，以找到合适的条件或科普改变了的环境。我们对这一问题的认识大多来自对脊椎动物的研究，主要是对恒温动物的研究。然而，目前还不确定小的外温动物，如昆虫，如何应对温度升高。2.这项研究测试了过去100年（1904-2013年）的气候变化是否影响了伊比利亚半岛社会黄蜂Dolichovespula sylvestris工人的形态和功能特征。3.头宽和前翅长，以及身体质量和翅膀面积（假设形状没有变化），随着时间的推移和年平均温度的增加而减少，即使在控制地理位置和海拔高度的情况下。有趣的是，与身体大小相比，翅膀大小以更陡的斜率减小。如果翅膀形状没有变化，这将导致一个不变的翼载荷（身体质量：翼面积比）随着时间的推移，与飞行能力的潜在后果更近（因此较小）黄蜂个人。4.这些结果表明，最近的气候变化正在社会黄蜂中留下形态特征，增加了昆虫中这种现象的证据。这些数据进一步表明，已知的社会昆虫群体的有效温度调节能力可能无法成功地缓冲全球变暖的影响。
1. Climate change is expected to produce shifts in species distributions as well as behavioural, life-history, and/or morphological adaptations to find suitable conditions or cope with the altered environment. Most of our knowledge on this issue comes from studies on vertebrates, mainly endotherm species. However, it remains uncertain how small ectotherms, such as insects, respond to increased temperature. 2. This study tested whether climate change over the last 100 years (1904-2013) has affected morphological and functional traits in workers of the social wasp Dolichovespula sylvestris in the Iberian Peninsula. 3. Head width and forewing length, as well as body mass and wing area (assuming no change in shape), decreased over time and with increased mean annual temperature, even when controlling for geographical location and altitude. Interestingly, wing size decreased with a steeper slope compared with body size. If there is no change in wing shape, this would lead to an invariable wing loading (body mass:wing area ratio) over time, with potential consequences on flying ability of more recent (and thus smaller) wasp individuals. 4. These results suggest that recent climate change is leaving morphological signatures in social wasps, increasing the evidence for this phenomenon in insects. The data furthermore suggest that the known efficient thermoregulatory ability of social insect colonies may not successfully buffer the effect of global warming.