Detection of Dietary Changes by Intra-tooth Carbon and Nitrogen Isotopic Analysis: An Experimental Study of Dentine Collagen of Cattle (Bos taurus) |
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| Affiliation: | 1. Laboratoire de Biogéochimie Isotopique, CNRS-INRA UMR 7618, Université P. et M. Curie, 4 place Jussieu, 75252, Paris, cedex 05, France;2. Laboratoire d''Anatomie Comparée, CNRS ESA 8045, Muséum national d''Histoire naturelle, 55 rue de Buffon, 75005, Paris, France;3. Laboratoire de Biogéochimie Isotopique, CNRS-INRA UMR 7618, Université P. et M. Curie, 4 place Jussieu, 75252, Paris, cedex 05, France;4. Department of Anthropology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, U.S.A.;1. Aix Marseille Univ, CNRS, Minist Culture, LAMPEA, Aix-en-Provence, France;2. Univ. Bordeaux, CNRS, PACEA, UMR 5199, 33616, Pessac, France;3. Soprintendenza Archeologia, Belle Arti e Paesaggio per le province di Verona, Rovigo e Vicenza, Piazza S. Fermo 3, 37121, Verona, Italy;4. Dipartimento di Biologia, Università degli Studi di Firenze, Italy;5. Soprintendenza Archeologia, Belle Arti e Paesaggio per la città metropolitana di Genova e le province di Imperia, La Spezia e Savona, via Balbi 10, I-16126, Genova, Italy;6. Dipartimento di Cività e Forme del Sapere, Università degli Studi di Pisa, Italy;7. Department of Archaeology, Durham University, UK;1. Archéozoologie, Archéobotanique : sociétés, pratiques et environnements (UMR 7209 AASPE), Muséum national d’histoire naturelle, CNRS, Sorbonne université, CP 56, 55 rue Buffon, 75005 Paris, France;2. Centre d’Ecologie et des Sciences de la Conservation (UMR 7204 CESCO), Muséum national d''Histoire naturelle, CNRS, CP 135, 57 rue Cuvier, 75005 Paris, France;3. Centre d’Ecologie Fonctionnelle et Evolutive (CEFE UMR 5175), Univ. Montpellier, Univ. Paul Valéry Montpellier 3, CNRS, EPHE, IRD, Montpellier, France;4. Institut Français de Recherche sur l’Asie de l’Est (IFRAE, FRE 2025), Inalco, Université de Paris, CNRS, 2 rue de Lille, 75007 Paris, France;5. Institute of Archaeology, Mongolian Academy of Sciences, Mongolia;6. Centre de Recherche en Archéologie, Archéosciences, Histoire (CReAAH UMR 6566), Univ. Rennes 1, Campus de Beaulieu, bat. 24/25, 35042 Rennes cedex, France;7. Archéologie et Philologie d’Orient et d’Occident (AOROC, UMR 8546) CNRS/PSL université, ENS-EPHE, Paris, France;8. 3 quai de la Gloriette, 28000 Chartres, France;9. Cogitamus Laboratory, 55 rue Buffon, 75005 Paris, France;1. Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209 CNRS/MNHN, CP56. 55, Rue Buffon, 75005 Paris, France;2. National Museum of Romanian History, Calea Victoriei nr.12, Sector 3, 030026 Bucharest, Romania;3. Archéorient UMR 5133 CNRS, Maison de l''Orient et de la Méditerranée, Jean Pouilloux, 7 rue Raulin, 69365 Lyon, France;4. Institute of Archaeology and Ethnography, National Academy of Sciences of Republic of Armenia, Armenia;5. Aix Marseille Université, CNRS, MCC, LAMPEA UMR 7269, 13094 Aix-en-Provence, France;1. UMR 7209 «Archéozoologie, archéobotanique: sociétés, pratiques, environnements», Sorbonne Universités, CNRS-MNHN, 55 rue Buffon, 75005 Paris, France;3. Collège de France, 11 place Marcelin-Berthelot, 75005-Paris, France;4. Department of Anthropology, University of Nevada, Las Vegas, PO Box 455003, Las Vegas, NV 89154-5003, USA;1. Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-Cho, Yokosuka, Kanagawa, 237-0061, Japan;2. Research Institute for Humanity and Nature, 457-4 Motoyama, Kamigamo, Kita-ku, Kyoto, 603-8047, Japan |
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| Abstract: | Hypsodont teeth potentially contain a record of dietary or environmental changes occurring during their growth. The aim of our study is to understand how a dietary change is recorded in dentine collagen. Analyses were conducted on five steers (Bos taurus) raised in an experimental farm. From birth until weaning the steers were fed on a C3diet; after weaning they were fattened on a C4/C3mixed diet until slaughter. Dentine collagen was sampled on demineralized molars from top to bottom. The change from the C3to the C4/C3diet and weaning are both reflected in intra-tooth variations in δ13C and δ15N values, respectively. The abrupt change in carbon isotopic composition of the diet is reflected by a progressive change of the dentine collagen δ13C values. The gradual change may reflect sampling strategy and/or gradual turnover of the metabolic nutrient pool. The weaning process is reflected by a decrease in δ15N that exactly coincides with increase in δ13C. This demonstrates that when steers are weaned to a protein-poor diet, δ15N traces the cessation of suckling. Archaeological applications of this study are considered, including determination of the duration of lactation in prehistoric herds, and detection of residential mobility in cattle herders. |
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