气候变化领域集成服务门户(CCPortal): Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information

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DOI	10.1073/pnas.1911744117
	Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information
	Bourgon N.; Jaouen K.; Bacon A.-M.; Jochum K.P.; Dufour E.; Duringer P.; Ponche J.-L.; Joannes-Boyau R.; Boesch Q.; Antoine P.-O.; Hullot M.; Weis U.; Schulz-Kornas E.; Trost M.; Fiorillo D.; Demeter F.; Patole-Edoumba E.; Shackelford L.L.; Dunn T.E.; Zachwieja A.; Duangthongchit S.; Sayavonkhamdy T.; Sichanthongtip P.; Sihanam D.; Souksavatdy V.; Hublin J.-J.; Tütken T.
发表日期	2020
ISSN	0027-8424
起始页码	4675
结束页码	4681
卷号	117 期号:9
英文摘要	Stable carbon and nitrogen isotope ratios of collagen from bone and dentin have frequently been used for dietary reconstruction, but this method is limited by protein preservation. Isotopes of the trace element zinc (Zn) in bioapatite constitute a promising proxy to infer dietary information from extant and extinct vertebrates. The 66Zn/64Zn ratio (expressed as δ66Zn value) shows an enrichment of the heavy isotope in mammals along each trophic step. However, preservation of diet-related δ66Zn values in fossil teeth has not been assessed yet. Here, we analyzed enamel of fossil teeth from the Late Pleistocene (38.4-13.5 ka) mammalian assemblage of the Tam Hay Marklot (THM) cave in northeastern Laos, to reconstruct the food web and assess the preservation of original δ66Zn values. Distinct enamel δ66Zn values of the fossil taxa (δ66Zncarnivore < δ66Znomnivore < δ66Znherbivore) according to their expected feeding habits were observed, with a trophic carnivore-herbivore spacing of +0.60% and omnivores having intermediate values. Zn and trace element concentration profiles similar to those of modern teeth also indicate minimal impact of diagenesis on the enamel. While further work is needed to explore preservation for settings with different taphonomic conditions, the diet-related δ66Zn values in fossil enamel from THM cave suggest an excellent long-term preservation potential, even under tropical conditions that are well known to be adverse for collagen preservation. Zinc isotopes could thus provide a new tool to assess the diet of fossil hominins and associated fauna, as well as trophic relationships in past food webs. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Diagenesis; Diet; Stable isotopes; Trophic ecology; Zinc
语种	英语
scopus关键词	trace element; zinc; collagen; zinc; Article; carnivore; cave; chemical composition; controlled study; diagenesis; eating habit; enamel; food web; fossil; herbivore; Laos; omnivore; priority journal; taphonomy; tooth; Upper Pleistocene; animal; chemistry; hominid; paleolithic diet; physiology; Southeast Asia; tooth; Animals; Asia, Southeastern; Caves; Collagen; Diet, Paleolithic; Fossils; Hominidae; Tooth; Zinc Isotopes
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161039
作者单位	Bourgon, N., Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, 04103, Germany, Institut für Geowissenschaften, Arbeitsgruppe für Angewandte und Analytische Paläontologie, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany, UMR 7209 Archéozoologie, Archéobotanique: Sociétés, Pratiques, Environnements (AASPE), Muséum National d'Histoire Naturelle, CNRS, Paris, 75005, France; Jaouen, K., Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, 04103, Germany, Géosciences Environnement Toulouse, UMR 5563, CNRS, Observatoire Midi Pyrénées, Toulouse, 31400, France; Bacon, A.-M., CNRS Formation de Recherche en Evolution (FRE) 2029 Biologie, Anthropologie, Biométrie, Epigénétique, Lignées, Université Paris Descartes, Faculté de chirurgie dentaire, Montrouge, 92120, France; Jochum, K.P., Climate Geochemistry Department, Max Planck Institute for Chemistry, Mainz, 55128, Germany; Dufour, E., UMR 7209 Archéozoologie, Archéobotanique...
推荐引用方式 GB/T 7714	Bourgon N.,Jaouen K.,Bacon A.-M.,et al. Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information[J],2020,117(9).
APA	Bourgon N..,Jaouen K..,Bacon A.-M..,Jochum K.P..,Dufour E..,...&Tütken T..(2020).Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information.Proceedings of the National Academy of Sciences of the United States of America,117(9).
MLA	Bourgon N.,et al."Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information".Proceedings of the National Academy of Sciences of the United States of America 117.9(2020).