Universidade Federal de Viçosa, Departamento de Biologia Geral, Programa de Pós-Graduação em Ecologia, Viçosa, MG, Brazil.
Universidade Federal de Viçosa, Departamento de Entomologia, Viçosa, MG, Brazil.
Ecotoxicology. 2023 Sep;32(7):926-936. doi: 10.1007/s10646-023-02698-9. Epub 2023 Sep 20.
The conservation of terrestrial ecosystems depends largely on the preservation of pollinators, mainly bees. Stingless bees are among the main pollinators of native plants and crops in tropical regions, where they can be exposed to agrochemicals while foraging on contaminated flowers. In the present study, we investigated the effects on stingless bees of both a commonly used insecticide and herbicide in Brazil. Plebeia lucii Moure, 2004 (Apidae: Meliponini) foragers were orally chronically exposed to food contaminated with different concentrations of commercial formulations of the insecticide acephate or the herbicide glyphosate. Bee mortality increased with increasing agrochemical concentrations. Depending on its concentration, the acephate-based formulation reduced the lifespan and impaired the flight ability of bees. The glyphosate-based formulation was toxic only under unrealistic concentrations. Our results demonstrate that realistic concentrations of acephate-based insecticides harm the survival and alter the mobility of stingless bees. The ingestion of glyphosate-based herbicides was safe for forager bees under realistic concentrations.
陆地生态系统的保护在很大程度上依赖于传粉媒介的保护，主要是蜜蜂。无刺蜜蜂是热带地区本地植物和作物的主要传粉媒介之一，它们在觅食受污染的花朵时可能会接触到农用化学品。在本研究中，我们调查了巴西常用杀虫剂和除草剂对无刺蜜蜂的影响。2004 年 Plebeia lucii Moure（Apidae：Meliponini）觅食者通过口服慢性接触受不同浓度商业配方的杀虫剂乙酰甲胺磷或除草剂草甘膦污染的食物。蜜蜂死亡率随农用化学品浓度的增加而增加。基于乙酰甲胺磷的配方会降低蜜蜂的寿命并损害其飞行能力，具体取决于其浓度。基于草甘膦的配方仅在不切实际的浓度下才具有毒性。我们的结果表明，基于乙酰甲胺磷的杀虫剂的实际浓度会危害无刺蜜蜂的生存并改变其活动能力。在实际浓度下，觅食蜜蜂摄入基于草甘膦的除草剂是安全的。
