The simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts of marine yellowstripe goby Mugilogobius chulae

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院海洋生物资源可持续利用重点实验室

	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
刊名	ENVIRONMENTAL POLLUTION
	2017
卷号	223 页码:31-41
关键词	Heavy metals Chyme Intestine Stomach Metal uptake routes Dual stable isotope tracer
通讯作者	zhangli@scsio.ac.cn
中文摘要	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.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/16257]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
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.(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.