Biological transfer of dietary cadmium in relation to nitrogen transfer and N-15 fractionation in a soil collembolan-predatory mite food chain

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Biological transfer of dietary cadmium in relation to nitrogen transfer and N-15 fractionation in a soil collembolan-predatory mite food chain
	Zhu, D; Ke, X; Wu, LH; Christie, P; Luo, YM
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2016-10-01
卷号	101 页码:207-216
关键词	Cadmium pollution Soil invertebrate food chain Cadmium trophic transfer Nitrogen isotope fractionation Nitrogen transfer
ISSN号	0038-0717
通讯作者	Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. ; Ke, X (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China. Email:xinke@sibs.ac.cn ; lhwu@issas.ac.cn
产权排序	[Zhu, Dong; Wu, Longhua; Christie, Peter] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Zhu, Dong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Ke, Xin] Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
英文摘要	Effects of cadmium (Cd) on collembolans and predatory mites have been well studied but Cd accumulation and biological transfer and the relationship between Cd trophic transfer and nitrogen (N) isotope fractionation and transfer in soil micro-arthropod food chains remain poorly understood. Here, we investigated the biological transfer and trophic toxicity of Cd and the effects of dietary Cd exposure on N-15 fractionation in animal tissues and N transfer from food in a soil collembolan (Folsomia candida) predatory mite (Hypoaspis aculeifer) food chain using experiments conducted in plate and soil systems. Synchronized F. candida were fed yeast or wheat spiked with 0 (Control), 50 (Cd50), 100 (Cd100) or 200 (Cd200) mu g Cd g(-1) food for two weeks and were then offered to synchronized H. aculeifer as prey for two weeks. Cadmium concentrations in tissues of both the collembolan and its predator increased as the Cd concentrations in the food yeast or wheat increased in both the plate and soil systems, and the Cd concentrations in the food and the animals were all significantly and positively correlated. Except for the controls, the Cd bioaccumulation factor (BAF) between adults of predatory mites and consumer collembolans (0.20-1.13) was 2.5-14 times higher than that from food yeast/wheat to consumer collembolans (0.02-0.08). Cadmium transfer has not altered the reproduction of the filial generation collembolans but the reproduction of the predatory mite declined by 34.3% with the Cd concentration in its juveniles reaching 5.94 mu g g(-1), suggesting that Cd transfer from the spiked food can present a higher toxicity to the predator H. aculeifer. Food spiked with Cd decreased the N content in the collembolan tissues assimilated from the food and enriched the N-15 fraction (delta N-15) in their tissues by affecting their metabolic turnover and growth rates. The Cd trophic transfer between collembolans and predatory mites from spiked food can directly increase the delta N-15 value of predatory mites and restrict the movement of N from collembolans to predatory mites. The delta N-15 of soil animals has considerable potential as a biomarker of Cd stress, N-15 isotope application may be limited in Cd polluted soil ecosystems, and the N transfer function of soil food webs may be more vulnerable in polluted ecosystems. (C) 2016 Elsevier Ltd. All rights reserved.
研究领域[WOS]	Agriculture
关键词[WOS]	STABLE-ISOTOPE FRACTIONATION ; FOLSOMIA-CANDIDA ; MERCURY EXPOSURE ; FEEDING-BEHAVIOR ; TROPHIC TRANSFER ; TEST SYSTEM ; CD ; TOXICITY ; QUALITY ; ACARI
收录类别	SCI
语种	英语
WOS记录号	WOS:000383300200022
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/17194]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
推荐引用方式 GB/T 7714	Zhu, D,Ke, X,Wu, LH,et al. Biological transfer of dietary cadmium in relation to nitrogen transfer and N-15 fractionation in a soil collembolan-predatory mite food chain[J]. SOIL BIOLOGY & BIOCHEMISTRY,2016,101:207-216.
APA	Zhu, D,Ke, X,Wu, LH,Christie, P,&Luo, YM.(2016).Biological transfer of dietary cadmium in relation to nitrogen transfer and N-15 fractionation in a soil collembolan-predatory mite food chain.SOIL BIOLOGY & BIOCHEMISTRY,101,207-216.
MLA	Zhu, D,et al."Biological transfer of dietary cadmium in relation to nitrogen transfer and N-15 fractionation in a soil collembolan-predatory mite food chain".SOIL BIOLOGY & BIOCHEMISTRY 101(2016):207-216.