An Odontometric Investigation of Biological Affinities of the Yashkun
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An Odontometric Investigation of the Biological Origins and Affinities of the Yashkuns of Astore, Gilgit-Baltistan, Northern Pakistan By Amber M. Barton A Thesis Submitted to the Anthropology Program California State University, Bakersfield In Partial Fulfillment for the Degree of Masters of Art Spring 2016 2 Copyright By Amber Marie Barton 2016 1 An Odontometric Investigation of Biological Origins and Affinities of the Yashkuns of Astore, Gilgit-Baltistan, Northern Pakistan By Amber M. Barton This thesis has been accepted on behalf of the Anthropology Program faculty by their supervisory committee: C1. t.~ Brian E. Hemphill, Ph.D. Committee Member 3 Acknowledgements The completion of this work has been an opportunity to fulfill the author‘s passion within both archaeology and biological anthropology. The author would like to extend gratitude to those that helped accomplish this milestone. The sincerest appreciation is extended toward my thesis committee. Thanks to Dr. Robert Yohe II and Mr. Patrick O‘Neill for being on my thesis committee and providing advice and encouragement throughout the research process. Thanks to Dr. Brian Hemphill for guiding me throughout my academic career and providing support and assistance with the research and statistical analyses. Great acknowledgment is given towards the California State University, Bakersfield‘s Student Research Scholars program and the Ronald E. McNair Post-baccalaureate Achievement program for providing both financial support and the opportunity to share my research. I would also like to thank the Yashkun and other participants within Northern Pakistan who graciously participated in this research. 4 An Odontometric Investigation of Biological Origins and Affinities of the Yashkuns of Astore, Gilgit- Baltistan, Northern Pakistan A.M. Barton Program of Anthropology California State University, Bakersfield Abstract The Yashkun are a Dardic-speaking ethnic group who live in Gilgit-Baltistan in extreme northern Pakistan. Most researchers assert that the Yashkun are immigrants to northern Pakistan from Central Asia. However, other authorities maintain that the Yashkun are indigenous to northern Pakistan (Dani, 2001). The purpose of this research is to investigate Yashkun biological affinities to determine whether members of this ethnic group represent long-standing indigenous occupants of northern Pakistan or whether they represent immigrants from Central Asia or elsewhere. This research seeks to identify Yashkun origins through a comparative analysis of permanent tooth size allocation among 163 Yashkun young adults from the village of Astoree, located in Gilgit-Baltistan Province, northern Pakistan. Maximum mesiodistal and buccolingual measurements were obtained for all permanent teeth, except third molars, in accordance with the methods of Moorrees (1957). Individual measurements were scaled against the geometric mean to control for sex dimorphism and evolutionary tooth size reduction. These data were contrasted with 23 samples of prehistoric and living individuals from Pakistan, peninsular India, South- Central Asia, and the Iranian Plateau. Inter-sample differences in tooth size allocation were assessed with pairwise squared Euclidean distances and the patterning of phenetic affinities among samples was assessed with multidimensional scaling, neighbor-joining cluster analysis, hierarchical cluster analysis, and principal co-ordinates analysis. The results indicate that Yashkuns possess rather close affinities to Wakhis and Khowars, with most distant affinities to other groups from the northern highlands of Pakistan. Yashkuns exhibit no affinities to prehistoric inhabitants of Central Asia or the Indus Valley, or to living ethnic groups of peninsular India. Hence, Dani's assertion that the Yashkuns represent the living descendants of a common, indigenous population of the Hindu Kush and Karakoram highlands appears to be confirmed. 5 Contents Chapter 1: Introduction ........................................................................................................................... 11 Peopling of the Indian Subcontinent ................................................................................................... 13 Ethnohistory of the Autonomous Territory of Gilgit-Baltistan ........................................................ 15 Astore ..................................................................................................................................................... 18 Yashkun Origins ................................................................................................................................... 19 Aryan Invasion Model ........................................................................................................................ 20 Language ............................................................................................................................................. 21 Chapter 2: Peopling of South Asia .......................................................................................................... 24 Aryan Invasion Model ............................................................................................................................ 24 Long-Standing Continuity Model ........................................................................................................... 27 Early Entrance Model ............................................................................................................................. 29 Historic Era Influences Model ................................................................................................................ 32 Chapter 3: General Research Questions. ................................................................................................ 34 Chapter 4: Odontometric Heritability .................................................................................................... 37 Odontogenesis ......................................................................................................................................... 37 Heritability .............................................................................................................................................. 42 Dental Genetics ....................................................................................................................................... 44 Size Differences at the Population Level ................................................................................................ 47 Chapter 5: Previous Studies of Affinities among South Asian Ethnic Groups ................................... 49 Modern Populations ................................................................................................................................ 49 Prehistoric Populations ........................................................................................................................... 56 Chapter 6: Materials and Methods ......................................................................................................... 58 Materials ................................................................................................................................................. 58 Methodology ........................................................................................................................................... 59 Fluctuating Asymmetry .......................................................................................................................... 59 Sexual Dimorphism ................................................................................................................................ 60 Multivariate Analyses ............................................................................................................................. 61 Chapter 7: Comparative Samples ........................................................................................................... 63 Prehistoric Central Asia .......................................................................................................................... 63 Prehistoric Indians .................................................................................................................................. 64 Prehistoric Indus Valley .......................................................................................................................... 66 6 Hindu Kush/Karakoram Highlands ......................................................................................................... 66 Southeast Indians .................................................................................................................................... 68 Western India .......................................................................................................................................... 69 Chapter 8: Operationalized Research Questions ................................................................................... 71 Chapter 9: Results I- Odontometric Variation among the Yashkun of Astore ................................... 75 Intra-Observer Error Analysis ................................................................................................................. 75 Inter-Observer Error Analysis ................................................................................................................. 75 Asymmetry .............................................................................................................................................