Increased survival of honeybees in the laboratory after simultaneous exposure to low doses of pesticides and bacteria.
Increased survival of honeybees in the laboratory after simultaneous exposure to low doses of pesticides and bacteria.
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DOI：
10.1371/journal.pone.0191256
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
Freitak D
中科院分区：
文献类型：
--
作者：
Dickel F;Münch D;Amdam GV;Mappes J;Freitak D
最近对蜜蜂和大黄蜂的研究检查了不同压力源的组合效应，因为昆虫传粉者自然会暴露于多种压力源。与此同时，同时发生的农业媒介对昆虫传粉者健康的潜在影响仍然很大程度上未知。由于耕作方法的不同，以及施用的药剂和粪便的漂移，授粉媒介很可能同时接触到杀虫剂，同时也接触到来自有机肥料的细菌。我们让蜜蜂工蜂口服亚致死剂量的杀虫剂噻虫啉和两种粪肠球菌菌株，这些细菌可能存在于农场动物的粪便中。我们的结果表明，在实验室条件下，同时暴露于细菌和农药噻虫啉的蜜蜂在暴露后 11 天的存活率显着高于对照组，令人惊讶的是，对照组的存活率最低。暴露于含有噻虫啉的饮食的蜜蜂表现出食物摄入量减少。杀虫剂和细菌增加了一般抗菌活性，导致与对照个体相比，在治疗个体中观察到更高的免疫反应。因此，我们认为，在我们的测试中，通过行为和生理适应进行热量限制可能有助于提高生存率和抗应激能力。然而，从长远来看，食物消耗的减少也可能对群体水平产生负面影响。在实验室条件下进行测试时，我们的研究并未显示出亚致死杀虫剂和细菌剂量的附加负面影响。相比之下，我们报告了蜜蜂同时接触农业制剂的看似有益的影响，这可能表明蜜蜂应对压力源的令人惊讶的生物能力，可能是通过毒物调节。
Recent studies of honeybees and bumblebees have examined combinatory effects of different stressors, as insect pollinators are naturally exposed to multiple stressors. At the same time the potential influences of simultaneously occurring agricultural agents on insect pollinator health remain largely unknown. Due to different farming methods, and the drift of applied agents and manure, pollinators are most probably exposed to insecticides but also bacteria from organic fertilizers at the same time. We orally exposed honeybee workers to sub-lethal doses of the insecticide thiacloprid and two strains of the bacterium Enterococcus faecalis, which can occur in manure from farming animals. Our results show that under laboratory conditions the bees simultaneously exposed to the a bacterium and the pesticide thiacloprid thiacloprid had significant higher survival rates 11 days post exposure than the controls, which surprisingly showed the lowest survival. Bees that were exposed to diet containing thiacloprid showed decreased food intake. General antibacterial activity is increased by the insecticide and the bacteria, resulting in a higher immune response observed in treated individuals compared to control individuals. We thus propose that caloric restriction through behavioural and physiological adaptations may have mediated an improved survival and stress resistance in our tests. However, the decreased food consumption could in long-term also result in possible negative effects at colony level. Our study does not show an additive negative impact of sub-lethal insecticide and bacteria doses, when tested under laboratory conditions. In contrast, we report seemingly beneficial effects of simultaneous exposure of bees to agricultural agents, which might demonstrate a surprising biological capacity for coping with stressors, possibly through hormetic regulation.
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DOI：
10.1007/s11356-014-3332-7
发表时间：
2015-01
期刊：
Environmental science and pollution research international
影响因子：
--
作者：
Bonmatin JM;Giorio C;Girolami V;Goulson D;Kreutzweiser DP;Krupke C;Liess M;Long E;Marzaro M;Mitchell EA;Noome DA;Simon-Delso N;Tapparo A
通讯作者：
Tapparo A
影响因子：
--
作者：
Connolly CN
通讯作者：
Connolly CN
影响因子：
6.8
作者：
Decourtye, A;Devillers, J;Pham-Delègue, MH
通讯作者：
Pham-Delègue, MH
影响因子：
6.7
作者：
Carina Audisio, M.;Torres, Maria J.;Apella, Maria C.
通讯作者：
Apella, Maria C.
影响因子：
4.1
作者：
Decourtye, A;Lacassie, E;Pham-Delègue, MH
通讯作者：
Pham-Delègue, MH