BABY BONES, FOOD, and HEALTH: STABLE ISOTOPIC EVIDENCE for INFANT FEEDING PRACTICES in the GREEK COLONY of APOLLONIA (5Th - 2Nd CENTURIES B.C.)
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BABY BONES, FOOD, AND HEALTH: STABLE ISOTOPIC EVIDENCE FOR INFANT FEEDING PRACTICES IN THE GREEK COLONY OF APOLLONIA (5th - 2nd CENTURIES B.C.) A Thesis Submitted to the Committee of Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Masters of Arts in the Faculty of Arts and Science. TRENT UNIVERSITY Peterborough, Ontario, Canada © Copyright by Cynthia S. Kwok 2007 Anthropology M.A. Program June 2008 Library and Bibliotheque et 1*1 Archives Canada Archives Canada Published Heritage Direction du Branch Patrimoine de I'edition 395 Wellington Street 395, rue Wellington Ottawa ON K1A0N4 Ottawa ON K1A0N4 Canada Canada Your file Votre reference ISBN: 978-0-494-31700-6 Our file Notre reference ISBN: 978-0-494-31700-6 NOTICE: AVIS: The author has granted a non L'auteur a accorde une licence non exclusive exclusive license allowing Library permettant a la Bibliotheque et Archives and Archives Canada to reproduce, Canada de reproduire, publier, archiver, publish, archive, preserve, conserve, sauvegarder, conserver, transmettre au public communicate to the public by par telecommunication ou par Nnternet, preter, telecommunication or on the Internet, distribuer et vendre des theses partout dans loan, distribute and sell theses le monde, a des fins commerciales ou autres, worldwide, for commercial or non sur support microforme, papier, electronique commercial purposes, in microform, et/ou autres formats. paper, electronic and/or any other formats. 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Canada ABSTRACT Baby Bones, Food, and Health: Stable Isotopic Evidence for Infant Feeding Practices in the Greek Colony of Apollonia (5th _ 2nd Centuries B.C.) Cynthia S. Kwok The aim of this research is to examine infant feeding patterns in the ancient Greek colony of Apollonia (5th - 2n Centuries B.C.) on the Black Sea coast of Bulgaria. Collagen from the ribs of 64 subadults, ranging in age from 3 months to 15 years, are analyzed for stable nitrogen and carbon isotopes to determine the general age at which weaning was initiated and terminated, and the types of foods onto which infants were weaned. From the stable isotopic evidence, weaning is observed to begin around 1 year and ends around 3 to 5 years of age. Furthermore, the subadult diet is compared to that of the adults to investigate whether the children consumed a different type of diet than the adults of Apollonia. In addition, the stable isotopic data is integrated with the palaeopathological and archaeological evidence as well as ancient literary sources to further explore infant feeding practices at Apollonia. Finally, the Apollonian weaning pattern is discussed within the context of other Classical biochemical weaning studies. Overall, this study shows the potential of incorporating evidence from multiple sources to draw a more complete picture of ancient Greek lifestyles and childrearing practices. Keywords: Apollonia, Greek, stable isotopes, nitrogen, carbon, breastfeeding, weaning, palaeodiet, Classical-Hellenistic n ACKNOWLEDGEMENTS First and foremost, my supervisor Dr. Anne Keenleyside deserves my utmost gratitude for her support, guidance, encouragement, and patience during this whole process at Trent, and for reminding me that not every pathological lesion is congenital syphilis, as I wish it were. Also, I would like to thank my committee members, Dr. Jocelyn Williams, Dr. Jennifer Moore and Dr. James Conolly for their insight and stimulating discussions. I am also grateful to my external examiner Dr. Tamara Varney for graciously taking the time to read my thesis and participating in my defense. All of their comments, suggestions and critiques are most appreciated and have improved my thesis greatly. My time spent in Sozopol will not be forgotten, and I must thank Dr. Kristina Panayotova, Dr. Margo Damyanov, and Dr. Dimitar Nedev for allowing me to work with the skeletal material, for providing information about Apollonia, and for making fieldwork an incredible experience. The hourly coffee breaks, daily ice-cream/baklava trips and five-course meals will be missed. I must also acknowledge Dr. Darren Grocke for access to the Stable-Isotope Biogeochemistry Laboratory at McMaster University, and to Martin Knyf for performing the stable isotope analysis. I am also appreciative of the use of Dr. Peter Dillon's lab and to Heather Broadbent for her assistance while I was working there. I would like to thank Dr. Tracy Prowse, Dr. Tosha Dupras and Dr. Sandra Garvie- Lok for providing the comparative information on their research. I am also thankful to Dr. Henry Schwarcz for reviewing an earlier stage of my work, and to Dr. Frances Burton for her intuition and Dr. John Albanese for telling me grad school was a 'good idea'. iii The time I have spent at Trent would not have been as memorable without my fellow graduate students: Marc Blainey, Nathan Content, Carrie Dennett, Jean-Paul Foster, Rhianne McKay, Jason Seguin, Flannery Surette, Ferenc Toth, Dagmara Zawadzka, Kate Dougherty, Christopher Little and Donald R. Garrett. I thank them for keeping me sane. It was a 'joy' being your social coordinator for the past two years. I also could not have done this without the support of my parents and family throughout this whole time. I would lastly like to acknowledge the generous financial support from the Ontario Graduate Scholarship, The Bagnani Graduate Award from Trent University and the Social Sciences and Humanities Research Council of Canada, provided through Dr. Anne Keenleyside. IV Table of Contents Abstract ii Acknowledgements iii Table of Contents v List of Figures viii List of Tables ix List of Equations x Chapter 1: Introduction 1 Chapter 2: Infant Feeding Practices and Diet in Classical Antiquity 5 2.1 Weaning Practices in Classical Antiquity 6 2.1.1 Ancient Literary Evidence for the Onset 6 and Cessation of Weaning 2.1.2 Wet-Nurses in Classical Antiquity 10 2.1.3 Archaeological Evidence for Ancient Weaning Practices 13 2.1.4 Artificial Feeding 14 2.2 The Mediterranean Diet 16 2.2.1 Cereals 17 2.2.2 Vegetables 21 2.2.3 Fruits and Nuts 22 2.2.4 Meat 24 2.2.5 Dairy Products 26 2.2.6 Marine Resources 27 2.2.7 Legumes 28 2.2.8 Wine and Olives 29 2.3 The Infant Diet 30 2.3.1 The Neonatal Diet 30 2.3.2 Weaning Diet 32 2.4 Summary 34 Chapter 3: Stable Isotope Analysis in Relation to Weaning Studies 35 3.1 A History of Stable Isotope Analysis 36 3.2 Theoretical and Methodological Aspects of Biochemical Weaning Studies 36 3.2.1 "What are Stable Isotopes?" 37 3.2.2 Methods of Analysis and Tissues Used 39 3.2.3 Diagenesis 41 3.3 Stable Nitrogen Isotopes 43 3.3.1 Assumptions 45 3.3.2 Factors Influencing 5' 5N Values 47 3.4 Stable Oxygen Isotopes 49 3.4.1 Factors Affecting 6180 Values 50 3.5 Stable Carbon Isotopes 51 v Chapter 4: A Review of Biochemical Weaning Studies 53 4.1 A History of Infant Weaning Studies in Anthropology 53 4.2 Terminology 55 4.3 Weaning Studies Using Stable Nitrogen Isotopes 56 4.3.1 Contemporary Studies 56 4.3.2 Prehistoric Europe and South Africa 58 4.3.3 Pre-Contact North America 60 4.3.4 Graeco-Roman 63 4.3.5 Byzantine and Medieval 66 4.3.6 Historic North America 70 4.4 Weaning Studies using Stable Oxygen Isotopes 71 4.5 Limitations in Biochemical Weaning Studies 74 4.6 Summary of Weaning Practices 76 Chapter 5: Materials and Method 78 5.1 Historical and Archaeological Context of the Sample 78 5.2 The Human Skeletal Sample Used for Analysis 81 5.3 Methods of Subadult Age Estimation 83 5.3.1 Dental Formation and Emergence 85 5.3.2 Diaphyseal Length 87 5.3.3 Epiphyseal Fusion 88 5.4 Preparation of Bone Samples for Stable Isotope Analysis 90 5.5 Assessing the Degree of Preservation 94 5.6 Statistical Analysis 95 Chapter 6: Results 96 6.1 Age Estimation 96 6.2 Preservation of Collagen 97 6.2.1 Collagen Yield 99 6.2.2 Carbon to Nitrogen Ratios 101 6.2.3 Nitrogen and Carbon Concentrations 103 6.3 Stable Nitrogen and Carbon Isotope Data 106 6.3.1 Stable Isotope Data by Age 106 6.4 Palaeopathological Data 112 6.4.1 Cribra Orbitalia 112 6.4.2 Porotic Hyperostosis 113 Chapter 7: Discussion and Interpretations 115 7.1 How Representative is the Apollonian Necropolis of the Population? 115 7.2 Assessment of the Isotopic Analysis 118 7.2.1 Stable Nitrogen Isotopes and Weaning Practices 118 7.2.2 Archaeological Evidence for Weaning Practices 122 7.3 Stable Isotopic Evidence for the Subadult Diet 125 7.3.1 Weaning Diet 126 7.3.2 Childhood Diet 130 7.3.3 Juvenile Diet Compared to the Adult Diet 134 VI 7.4 Health Implications Associated with Infant Feeding Practices 136 7.4.1 Cribra Orbitalia and Porotic Hyperostosis 137 7.5 Individual Weaning Patterns? 142 7.6 Subadult Mortality 144 7.7 Comparison of the Graeco-Roman Weaning Studies