Department of Agricultural, Forest, and Food Sciences, University of Torino, Grugliasco (TO), Italy.
Division of Biological Sciences, Section of Ecology, Behavior, and Evolution, University of California San Diego, San Diego, CA, USA.
Commun Biol. 2021 Jun 28;4(1):805. doi: 10.1038/s42003-021-02336-2.
The assessment of pesticide risks to insect pollinators have typically focused on short-term, lethal impacts. The environmental ramifications of many of the world's most commonly employed pesticides, such as those exhibiting systemic properties that can result in long-lasting exposure to insects, may thus be severely underestimated. Here, seven laboratories from Europe and North America performed a standardised experiment (a ring-test) to study the long-term lethal and sublethal impacts of the relatively recently approved 'bee safe' butenolide pesticide flupyradifurone (FPF, active ingredient in Sivanto) on honey bees. The emerging contaminant, FPF, impaired bee survival and behaviour at field-realistic doses (down to 11 ng/bee/day, corresponding to 400 µg/kg) that were up to 101-fold lower than those reported by risk assessments (1110 ng/bee/day), despite an absence of time-reinforced toxicity. Our findings raise concerns about the chronic impact of pesticides on pollinators at a global scale and support a novel methodology for a refined risk assessment.
对杀虫剂对传粉昆虫的风险评估通常集中在短期的致死影响上。然而，世界上许多最常用的杀虫剂，如那些具有系统性的杀虫剂，可能会导致昆虫长期暴露，其对环境的影响可能被严重低估。在这里，来自欧洲和北美的七个实验室进行了一项标准化实验（环测试），研究了相对较新批准的“对蜜蜂安全”的丁烯酸内酯类杀虫剂氟吡呋喃酮（FPF，Sivanto 的有效成分）对蜜蜂的长期致死和亚致死影响。尽管不存在时间强化毒性，但这种新出现的污染物 FPF 在田间实际剂量（低至 11ng/bee/天，相当于 400μg/kg）下，会损害蜜蜂的生存和行为，其剂量比风险评估报告的（1110ng/bee/天）低 101 倍。我们的研究结果令人担忧的是，在全球范围内，杀虫剂对传粉者的慢性影响，这也支持了一种新的、用于精细化风险评估的方法。
