The simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts of marine yellowstripe goby Mugilogobius chulae
Guo, ZQ; Gao, N; Wu, Y; Zhang, L; zhangli@scsio.ac.cn
2017
发表期刊ENVIRONMENTAL POLLUTION
卷号223页码:31-41
摘要Aquatic animals under waterborne metal exposure are also very likely exposed to elevated dietary metals. This study quantified the simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts (GT) of marine yellowstripe goby using a dual stable isotope tracer method. The Cd spiked diet (10 100 mu g g(-1), Cd-111 as tracers) were fed to the fish as a single meal, and then the fish were exposed to waterborne Cd (0-500 mu g L-1, Cd-113 as tracers) for 48 h, during which the time-course uptake of Cd in the stomach and intestine was determined. The findings revealed that the dietary Cd uptake mainly occurred within 12 h after feeding. The fish exposed to 500 mu g L-1 waterborne Cd showed significantly lower Cd assimilation efficiency (2.07%) than the control group (3.48%) at the dietary Cd of 100 mu g g(-1). Moreover, during 4-12 h when there was chyme in the GT, the waterborne Cd uptake in the intestine was lowest but the stomach showed the highest waterborne Cd uptake rate. The uptake of dietary and waterborne Cd, and the relative importance of dietary vs waterborne Cd was positively correlated with the Cd concentration in the chyme. Overall, this research demonstrated that there was interaction between dietary and waterborne Cd uptake in the GT of marine fish. The simultaneous uptake of metal from two routes is far more complex than the situation of a single route of metal uptake, which should be evaluated in determining metal bioaccumulation and toxicity in both laboratory and field metal exposure scenario. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属[Guo, Zhiqiang; Gao, Na; Wu, Yun; Zhang, Li] Chinese Acad Sci, Key Lab Trop Marine Bioresources & Ecol, Guangdong Prov Key Lab Appl Marine Biol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Gao, Na] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wu, Yun] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China
关键词Heavy Metals Chyme Intestine Stomach Metal Uptake Routes Dual Stable Isotope Tracer
资助项目LMB
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16257
专题中科院海洋生物资源可持续利用重点实验室
通讯作者zhangli@scsio.ac.cn
推荐引用方式
GB/T 7714
Guo, ZQ,Gao, N,Wu, Y,et al. The simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts of marine yellowstripe goby Mugilogobius chulae[J]. ENVIRONMENTAL POLLUTION,2017,223:31-41.
APA Guo, ZQ,Gao, N,Wu, Y,Zhang, L,&zhangli@scsio.ac.cn.(2017).The simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts of marine yellowstripe goby Mugilogobius chulae.ENVIRONMENTAL POLLUTION,223,31-41.
MLA Guo, ZQ,et al."The simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts of marine yellowstripe goby Mugilogobius chulae".ENVIRONMENTAL POLLUTION 223(2017):31-41.
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