Bioaccumulation, transformation and toxicity of imidacloprid and dinotefuran in Eisenia fetida under single and binary exposure scenarios
文献类型： 外文期刊
作者： Zhang, Haiyun 1 ; Zhang, Meng 2 ; Zhang, Hanlin 1 ; Shen, Xiaofang 3 ; Lv, Weiguang 1 ; Wang, Xilong 4 ; Zhang, Juanqin 1 ; Guo, Xiaoying 5 ;
作者机构： 1.Shanghai Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Low carbon Green Agr Southeastern China, Agr Environm & Farmland Conservat Expt Stn, Shanghai 201403, Peoples R China
2.Nanjing Forestry Univ, Coll Ecol & Environm, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China
3.Suzhou Univ Sci & Technol, Sch Environm Sci & Engn, Suzhou 215009, Peoples R China
4.Peking Univ, Coll Urban & Environm Sci, Lab Earth Surface Proc, Beijing 100871, Peoples R China
5.Zhengzhou Univ, Sch Ecol & Environm, Zhengzhou 450001, Peoples R China
关键词： "Edited by Dr. Alan Jeffrey Hargreaves".; Neonicotinoid; Bioaccumulation; Transformation; Toxicity; Earthworm; Coelomocyte
期刊名称：ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY （ 影响因子：4.2； 五年影响因子：4.7 ）
ISSN： 1382-6689
年卷期： 2024 年 111 卷
页码：
收录情况： SCI
摘要： Earthworms (Eisenia fetida) were exposed to individual and binary mixture of imidacloprid (IMI) and dinotefuran (DIN) at 0.05 and 0.5 mg/kg for 28 days to investigate their bioaccumulation, transformation and toxicity. IMI was more easily absorbed by earthworms than DIN, and worms didn't accumulate or generate toxic metabolites. The obvious accumulation of neonicotinoids during later period caused significant neural dysfunction, especially when exposed to high-concentration IMI. Meanwhile, oxidative stress indicated by decreased SOD/CAT activity (33.2 %-68.1 %) and increased MDA (38.4 %-55.0 %) was induced by binary exposure with high-concentration IMI. By contrast, coelomocytes responded earlier and more strongly than oxidative responses. Coelomocytes' viability and mitochondrial membrane potential were inhibited (23.6 %-91.7 %) mainly by IMI and binary exposure. Coelomocytes' lactate dehydrogenase activity exerted a fluctuating pattern, suggesting irregular disturbance on cellular functions. This study highlights the role of coelomocytes and the need to consider binary/ multiple scenarios and transformation of neonicotinoids in their risk assessment to earthworms.
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