A neonicotinoid pesticide alters how nectar chemistry affects bees
A neonicotinoid pesticide alters how nectar chemistry affects bees
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新烟碱类杀虫剂改变花蜜化学对蜜蜂的影响
DOI：
10.1111/1365-2435.14016
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发表时间：
2022
影响因子：
5.2
通讯作者：
Leonard, Anne S.
中科院分区：
文献类型：
--
作者：
Richman, Sarah K.;Maalouf, Isabelle M.;Smilanich, Angela M.;Marquez Sanchez, Denyse;Miller, Sharron Z.;Leonard, Anne S.
管理作物和野花的花蜜和花粉中的新烟碱类杀虫剂导致全球蜜蜂数量减少。这些化学物质会对蜜蜂的生理、行为和繁殖产生有害影响。花蜜还含有二次化学物质，对蜜蜂健康有影响。花蜜二次化学如何与新烟碱类杀虫剂产生相加或协同作用尚不清楚。在这里，我们询问急性暴露于常见的新烟碱类杀虫剂吡虫啉（IMD）如何影响熊蜂的寿命、免疫功能和行为，而熊蜂凤仙花工蜂的饮食富含三种花蜜二次代谢物（NSM；生物碱咖啡因、萜类百里酚或强心剂）中的一种。苷地高辛）。析因设计使我们能够评估每种 NSM 和 IMD 组合对多种健康结果的相加和交互影响的潜力。在不接触 IMD 的情况下，不同的饮食 NSM 各自对寿命（咖啡因）、免疫功能（地高辛）和活动水平（咖啡因、百里酚）产生积极影响，尽管这些都需要权衡。一次亚致死的 IMD 暴露掩盖了这些 NSM 的影响，并且在两种情况下，富含 NSM 的饮食放大了农药暴露的负面影响。总之，我们表明，即使是一次急性暴露于农药，也有可能重塑传粉者和植物之间由花蜜二次化学介导的相互作用。阅读期刊博客上这篇文章的免费简单语言摘要。
Neonicotinoid pesticides in the nectar and pollen of managed crops and wildflowers contribute to the global declines of bees. These chemicals can have detrimental effects on bees' physiology, behaviour and reproduction. Floral nectar also contains secondary chemistry with its own effects on bee health. How nectar secondary chemistry may act additively or synergistically with neonicotinoids is unknown.Here, we asked how an acute exposure to a common neonicotinoid, imidacloprid (IMD) affected the longevity, immune function and behaviour of bumble beeBombus impatiensworkers maintained on diets enriched with one of three nectar secondary metabolites (NSMs; the alkaloid caffeine, the terpenoid thymol or the cardiac glycoside digoxin). A factorial design allowed us to assess the potential for additive and interactive effects of each NSM and IMD combination on multiple health outcomes.Without IMD exposure, different dietary NSMs each had positive effects on life span (caffeine), immune function (digoxin) and activity levels (caffeine, thymol), although these came with trade‐offs. A single sublethal IMD exposure overshadowed these NSM effects, and in two cases, an NSM‐enriched diet magnified the negative effects of pesticide exposure.In summary, we show that even a single acute exposure to a pesticide has the potential to reshape interactions between pollinators and plants mediated by nectar secondary chemistry.Read the free Plain Language Summary for this article on the Journal blog.