Enantioselective bioaccumulation and toxic effects of fipronil in the earthworm Eisenia foetida following soil exposure

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Enantioselective bioaccumulation and toxic effects of fipronil in the earthworm Eisenia foetida following soil exposure
	Gao, Yongxin; Xu, Peng; Qin, Fang; Guo, Baoyuan; Li, Jianzhong; Wang, Huili
刊名	PEST MANAGEMENT SCIENCE
	2015-04
卷号	71 期号:4 页码:553-561
关键词	Chiral Pesticides Enantioselective Toxicity Bioaccumulation Soil Fipronil
英文摘要	BACKGROUND: Enantiomers of chiral pesticides often have different bioactivity, toxicity and environmental behaviours. Fipronil has been used in racemate for agricultural purposes against soil insects, leading to increased inputs into soil environments and complex biota exposures. To understand the potential risk associated with fipronil enantiomer exposure, subchronic toxicity and bioaccumulation tests with earthworms (Eisenia foetida) in fipronil-spiked soils were evaluated under laboratory conditions. RESULTS: Enantioselective toxicity was measured in E. foetida biomass after 28 days of subchronic exposure, with increased toxicity from racemate and S-fipronil compared with R-fipronil. The bioaccumulation of fipronil in earthworm tissues was also enantioselective, with a preferential accumulation of S-fipronil, and the enantiomer fraction was approximately 0.56 - 0.60. During soil exposure, fipronil was transformed primarily into fipronil sulfide, sulfone and amide, and E. foetida rapidly accumulated fipronil and sulfone. CONCLUSION: This work demonstrates the enantioselective subchronic toxicity and bioaccumulation of enantiomers of fipronil in E. foetida. The earthworm tissues exhibited a relative enrichment of fipronil and fipronil sulfone, and these compounds might biomagnify (with a biota-to-soil accumulation factor of >= 1.0 kg(oc) kg(lip)(-1)), allowing for the possible trophic transfer and/or lip bioaccumulation of all these chemicals if earthworms were consumed by predator organisms. (C) 2014 Society of Chemical Industry
WOS研究方向	Agronomy ; Entomology
WOS记录号	WOS:000352491900010
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32927]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Gao, Yongxin,Xu, Peng,Qin, Fang,et al. Enantioselective bioaccumulation and toxic effects of fipronil in the earthworm Eisenia foetida following soil exposure[J]. PEST MANAGEMENT SCIENCE,2015,71(4):553-561.
APA	Gao, Yongxin,Xu, Peng,Qin, Fang,Guo, Baoyuan,Li, Jianzhong,&Wang, Huili.(2015).Enantioselective bioaccumulation and toxic effects of fipronil in the earthworm Eisenia foetida following soil exposure.PEST MANAGEMENT SCIENCE,71(4),553-561.
MLA	Gao, Yongxin,et al."Enantioselective bioaccumulation and toxic effects of fipronil in the earthworm Eisenia foetida following soil exposure".PEST MANAGEMENT SCIENCE 71.4(2015):553-561.