Signatures of increasing environmental stress in bumblebee wings over the past century: Insights from museum specimens.
Signatures of increasing environmental stress in bumblebee wings over the past century: Insights from museum specimens.
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过去一个世纪，大黄蜂翅膀增加环境压力的签名：博物馆标本的见解。
DOI：
10.1111/1365-2656.13788
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发表时间：
2023-02
影响因子：
4.8
通讯作者：
Gill, Richard J.
中科院分区：
文献类型：
--
作者：
Arce, Andres N.;Cantwell-Jones, Aoife;Tansley, Michael;Barnes, Ian;Brace, Selina;Mullin, Victoria E.;Notton, David;Ollerton, Jeff;Eatough, Emma;Rhodes, Marcus W.;Bian, Xueni;Hogan, James;Hunter, Tony;Jackson, Simon;Whiffin, Ashleigh;Blagoderov, Vladimir;Broad, Gavin;Judd, Steve;Kokkini, Phaedra;Livermore, Laurence;Dixit, Mahika K.;Pearse, William D.;Gill, Richard J.
关键词：
确定动物种群在过去何时经历过压力对于理解风险因素如何驱动当代和未来物种对环境变化的反应至关重要。对于昆虫来说，量化压力并将其与环境因素联系起来一直是一个挑战，因为缺乏时间序列数据，而且可检测的种群水平反应可能会显示出不同的滞后效应。一种解决方案是利用历史昆虫标本来检测压力源出现时所经历的压力的形态学代理，使我们能够更准确地确定种群反应。在这里，我们研究了四种熊蜂的标本，这是一种非常宝贵的昆虫授粉者，来自20世纪世纪英国各地的五个博物馆。我们计算了左右前翅之间的波动不对称（FA;双侧对称性的随机偏差）的程度，作为发育压力的潜在代理。我方：（a）调查了不同物种之间的基线FA水平是否存在差异，以及该水平在世纪上半叶和下半叶之间的比较情况如何;（B）确定了四种大黄蜂物种在整个世纪内FA的变化程度，以及这是否遵循线性或非线性趋势;（c）测试哪些年度气候条件与大黄蜂FA增加相关。物种的基准FA不同，最近在英国扩大范围的两个物种的FA更高。总体而言，FA在世纪显著增加，但遵循非线性趋势，从c开始增加。1925.我们发现相对温暖和潮湿的年份与较高的FA相关。总的来说，我们的研究结果表明，在世纪和天气条件下，大黄蜂的FA增加，可能会增加频率与气候变化。通过绘制FA趋势和量化年度气候条件对过去种群的贡献，我们为提高我们对环境因素如何影响未来野生益虫种群的理解迈出了重要的一步。确定压力事件可以提高我们对人口下降驱动因素的理解，但缺乏基线数据使这一点具有挑战性。利用博物馆标本，作者测量了1900年至2000年间大黄蜂翅膀形状波动不对称性（FA;应力代理）的变化。FA在世纪增加，温暖，潮湿的条件下预测更高的FA。
Determining when animal populations have experienced stress in the past is fundamental to understanding how risk factors drive contemporary and future species' responses to environmental change. For insects, quantifying stress and associating it with environmental factors has been challenging due to a paucity of time‐series data and because detectable population‐level responses can show varying lag effects. One solution is to leverage historic entomological specimens to detect morphological proxies of stress experienced at the time stressors emerged, allowing us to more accurately determine population responses. Here we studied specimens of four bumblebee species, an invaluable group of insect pollinators, from five museums collected across Britain over the 20th century. We calculated the degree of fluctuating asymmetry (FA; random deviations from bilateral symmetry) between the right and left forewings as a potential proxy of developmental stress. We: (a) investigated whether baseline FA levels vary between species, and how this compares between the first and second half of the century; (b) determined the extent of FA change over the century in the four bumblebee species, and whether this followed a linear or nonlinear trend; (c) tested which annual climatic conditions correlated with increased FA in bumblebees. Species differed in their baseline FA, with FA being higher in the two species that have recently expanded their ranges in Britain. Overall, FA significantly increased over the century but followed a nonlinear trend, with the increase starting c. 1925. We found relatively warm and wet years were associated with higher FA. Collectively our findings show that FA in bumblebees increased over the 20th century and under weather conditions that will likely increase in frequency with climate change. By plotting FA trends and quantifying the contribution of annual climate conditions on past populations, we provide an important step towards improving our understanding of how environmental factors could impact future populations of wild beneficial insects. Determining stress events improves our understanding of the drivers of population declines, but a lack of baseline data makes this challenging. Leveraging museum specimens, the authors measured the change in bumblebee wing‐shape fluctuating asymmetry (FA; proxy of stress) between 1900 and 2000. FA increased over the century, with warmer, wetter conditions predicting higher FA.
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影响因子：
8.8
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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作者：
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通讯作者：
Mousseau, Timothy A.
DOI：
10.1073/pnas.2001283117
发表时间：
2020-11-17
影响因子：
11.1
作者：
Freedman, Micah G.;Dingle, Hugh;Ramirez, Santiago R.
通讯作者：
Ramirez, Santiago R.