数字农科院2.0

Pesticide residues in the pollen and nectar of oilseed rape (Brassica napus L.) and their potential risks to honey bees

文献类型： 外文期刊

作者： Wen Xiaolin;Ma Changsheng;Sun Minghui;Wang Ye;Xue Xiaofeng;Chen Jun;Song Wencheng;Li-Byarlay Hongmei;Luo Shudong

作者机构：

关键词： BeeREX; Hazard quotient; Oilseed rape; Pesticide residues; Risk assessment

期刊名称： Science of the Total Environment

ISSN： 0048-9697

年卷期： 2021 年 786 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： Research evidence suggests that pesticide residues are one of the leading potential causes of the decline in pollinators, especially during vulnerable periods such as foraging in the early springtime. In China, no research quantifies pesticide residues in the nectar and pollen of honey bee colonies during this period or examines the potential risks and toxicity of pesticides to honey bees. Oilseed rape is one of the first and primary bee-attractive plants in most parts of China. Here, we investigated the pesticide residues in the oilseed rape of the years 2017 and 2018 in China. The hazard quotient (HQ) from pollen and nectar and the BeeREX risk assessment were used to evaluate the potential risks of the pesticide residues to honey bees. We detected 48 pesticides in pollen samples and 34 chemicals in nectar samples. The maximum pollen HQ (PHQ) values (contact or oral) ranged from 0.16 to 706,421, and the maximum nectar HQ (NHQ) values (contact or oral) ranged from 0.07 to 185,135. In particular, carbofuran, cyfluthrin, deltamethrin, and fenpropathrin have relatively high PHQ and NHQ values. Our results indicated that further investigation of nearly half of the tested compounds is needed because their PHQ or NHQ values are more than 50. Especially cyfluthrin and carbofuran need advanced tier assessment due to their maximum RQ (risk quotient) values exceeding the level of concern. These results provide valuable guidance for protecting bees and other pollinators in China. © 2021 Elsevier B.V.

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