文献类型：期刊文献

英文题名：The reproductive responses of earthworms (Eisenia fetida) exposed to nanoscale zero-valent iron (nZVI) in the presence of decabromodiphenyl ether (BDE209)

作者：Liang, Jun[1];Xia, Xiaoqian[1];Yuan, Ling[1];Zhang, Wei[1];Lin, Kuangfei[1];Zhou, Bingsheng[2];Hu, Shuangqing[3]

机构：[1]East China Univ Sci & Technol, Sch Resource & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China;[3]Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China

年份：2018

卷号：237

起止页码：784

外文期刊名：ENVIRONMENTAL POLLUTION

收录：;EI(收录号：20174704436881);WOS:【SCI-EXPANDED(收录号:WOS:000431158900080)】；

基金：This research was supported by projects of the National Natural Science Foundation of China (21737005, 41371467), and the Shanghai Pujiang Program (15PJD013).

语种：英文

外文关键词：Nanoscale zero-valent iron; Decabromodiphenyl ether; Eisenia fetida; Reproductive toxicity; ANN gene expression

摘要：Reproductive toxicity of nanoscale zero-valent iron (nZVI) along with coexisting decabromodiphenyl ether (BDE209) to earthworm Eisenia fetida (E. fetida) remains unknown. In the present study, the reproductive responses of E. fetida exposed to 100, 500 and 1000 mg kg(-1) of nZVI showed a significant (P < 0.05) decline up to 35.6%, 60.0% and 93.3%, respectively, compared to the controls. Expression levels of annetocin (ANN) gene indicated a remarkable (P < 0.05) down-regulation (59.2%, 58.2% and 95.0%, correspondingly), and it was positively correlated with reproductive rates (R = 0.94). Iron contents in E. fetida were also relevant to reproductive behavior (R = 0.84) and ANN expression (R = 0.75). Additionally, seminal vesicles displayed a progressive degeneration with increasing nZVI levels. The addition of BDE209 to low level of nZVI-polluted group (100 mg kg-i dw) barely caused clear changes on reproduction, histopathology and ANN, while the coexistence resulted in significant impacts in comparison with high level of single nZVI exposure (1000 mg kg(-1) dw). These observations would provide some significant information concerning joint toxicity of the two chemicals in a soil system. (C) 2017 Elsevier Ltd. All rights reserved.