Centro de Estudos em Recursos Naturais, Lab de Ecologia Comportamental, Univ Estadual de Mato Grosso do Sul, Dourados, MS, Brazil.
Programa de Pós-Graduação em Recursos Naturais, Univ Estadual de Mato Grosso do Sul, Dourados, MS, Brazil.
Neotrop Entomol. 2023 Jun;52(3):422-430. doi: 10.1007/s13744-023-01028-2. Epub 2023 Feb 2.
In the last few years, with the increase in agricultural productivity, there has also been an increase in the use of insecticides to combat insects considered pests. However, these chemical compounds end up affecting nontarget insects that also interact with the crops. Studies have shown that social bees are among the insects that are suffering most from the effects of these compounds, resulting in negative ecological and economic impacts, considering that these insects provide pollination services in ecosystems. At the same time, social wasps also interact with plants, including cultivated ones, and perform ecological services similar to those of social bees, so it can be hypothesized that insecticides are also affecting social wasp colonies. Therefore, the purpose of this study was to evaluate contamination and sublethal effects of neonicotinoids on the mobility of the social wasp Protopolybia exigua (Saussure). In the first step, oral exposure experiments were performed to determine lethal and sublethal concentrations. In a second step, the wasps were exposed to sublethal concentrations, in order to evaluate the effects on their mobility. The results demonstrated that this species is more susceptible to exposure to neonicotinoids, compared to several bee species that have so far been studied, but lower than others. Exposure to sublethal concentrations can significantly reduce wasp mobility, which can have short-term consequences both for worker wasps and for the maintenance of their colonies.
在过去的几年中，随着农业生产力的提高，杀虫剂的使用也有所增加，以对抗被认为是害虫的昆虫。然而，这些化学化合物最终会影响到与作物相互作用的非目标昆虫。研究表明，社会性蜜蜂是受这些化合物影响最大的昆虫之一，对生态和经济造成负面影响，因为这些昆虫在生态系统中提供授粉服务。与此同时，社会性胡蜂也与植物相互作用，包括栽培植物，并提供类似于社会性蜜蜂的生态服务，因此可以假设杀虫剂也会影响社会性胡蜂的群体。因此，本研究的目的是评估新烟碱类杀虫剂对社会性胡蜂 Protopolybia exigua（Saussure）的迁移能力的污染和亚致死效应。在第一步中，进行了口服暴露实验，以确定致死和亚致死浓度。在第二步中，胡蜂暴露于亚致死浓度下，以评估对其迁移能力的影响。结果表明，与迄今为止研究过的几种蜜蜂物种相比，该物种对新烟碱类杀虫剂的暴露更为敏感，但比其他物种的敏感性低。暴露于亚致死浓度会显著降低胡蜂的迁移能力，这对工蜂及其群体的维持都会产生短期影响。
