Bumblebees avoid sucrose solution containing high concentrations of Roundup.

IF 2.4 4区 环境科学与生态学 Q2 ECOLOGY
Linzi Jay Thompson, Dara A Stanley, Marie Dacke, Lina Herbertsson
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引用次数: 0

Abstract

Herbicides are one of the most heavily applied groups of pesticides globally. Whilst research on herbicides in relation to bees is growing, we still have more to learn about how bees may interact with herbicides and the subsequent consequences for bee health. As herbicides are designed to kill the plants they are applied to, bees and other pollinators may interact with them in a different way to other pesticide groups which is important to understand in the context of evaluating hazard and risk. Here, we conducted both a choice and no-choice test, to determine if bumblebees would be deterred from foraging from feeders containing commercial formulations of Roundup (Ultra and Biactive, respectively) compared to controls. We found across both experiments that bees were deterred from foraging where feeders contained above field-realistic concentrations of Roundup formulation, and that on average colonies reduced their consumption from these feeders by ~50% despite lacking other food sources. This demonstrates that, when given no choice, bees can be deterred from sucrose containing Roundup Biactive, although above expected field concentrations, even to their own nutritional detriment. Separately, individual foragers were observed avoiding feeders containing field-realistic levels of Roundup Ultra compared to controls, showing a preference for uncontaminated feed when given a choice. As this was an experimental setup using high concentrations of Roundup with sucrose solution rather than real flowers, more work is needed to understand this phenomenon under field conditions. This work provides useful information and insights for future studies investigating the impacts of glyphosate in the form of both active substance and formulation on bees and could also be useful in identifying future mitigation strategies for field use.

除草剂是全球使用量最大的杀虫剂种类之一。尽管有关除草剂与蜜蜂关系的研究在不断增加,但对于蜜蜂如何与除草剂相互作用以及随后对蜜蜂健康造成的影响,我们仍有许多东西需要了解。由于除草剂的作用是杀死被施用的植物,蜜蜂和其他授粉者可能会以不同于其他农药的方式与除草剂发生作用,这对于评估危害和风险非常重要。在这里,我们进行了选择和非选择试验,以确定与对照组相比,熊蜂是否会被阻止从含有驱避剂(分别为 Ultra 和 Biactive)商业配方的饲喂器中觅食。我们在这两项实验中都发现,当喂食器中含有高于现场实际浓度的Roundup制剂时,蜜蜂就会停止觅食,尽管缺乏其他食物来源,但蜂群从这些喂食器中摄取的食物平均减少了约50%。这表明,在别无选择的情况下,蜜蜂可能会放弃含有驱避剂 Biactive 的蔗糖,尽管其浓度高于预期的田间浓度,甚至对其自身的营养造成损害。另外,与对照组相比,观察到个体觅食者会避开含有符合现场实际水平的 Roundup Ultra 的饲喂器,这表明在有选择的情况下,它们更喜欢无污染的饲料。由于这是一个使用高浓度驱避剂和蔗糖溶液的实验装置,而不是真实的花朵,因此需要做更多的工作来了解在田间条件下的这一现象。这项工作为今后调查草甘膦活性物质和制剂对蜜蜂影响的研究提供了有用的信息和见解,也有助于确定今后在田间使用的缓解策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ecotoxicology
Ecotoxicology 环境科学-毒理学
CiteScore
5.30
自引率
3.70%
发文量
107
审稿时长
4.7 months
期刊介绍: Ecotoxicology is an international journal devoted to the publication of fundamental research on the effects of toxic chemicals on populations, communities and terrestrial, freshwater and marine ecosystems. It aims to elucidate mechanisms and processes whereby chemicals exert their effects on ecosystems and the impact caused at the population or community level. The journal is not biased with respect to taxon or biome, and papers that indicate possible new approaches to regulation and control of toxic chemicals and those aiding in formulating ways of conserving threatened species are particularly welcome. Studies on individuals should demonstrate linkage to population effects in clear and quantitative ways. Laboratory studies must show a clear linkage to specific field situations. The journal includes not only original research papers but technical notes and review articles, both invited and submitted. A strong, broadly based editorial board ensures as wide an international coverage as possible.
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