Tracking dietary transitions in weanling baboons (Papio hamadryas anubis) using strontium/calcium ratios in enamel

Folia primatologica; international journal of primatology
Louise T HumphreyTeresa E Jeffries

Abstract

Strontium and calcium are incorporated into developing teeth in a manner that reflects changing physiological concentrations in the body. A new model predicts changes in strontium/calcium (Sr/Ca) ratios in response to dietary transitions experienced at birth and during the weaning period. Microsampling of longitudinal thin sections of tooth enamel using laser ablation inductively coupled plasma mass spectrometry provides a basis for the systematic evaluation of variation in Sr/Ca ratios within the tooth crown. Incremental growth markers in enamel are used to determine the age of onset of enamel mineralization at each sampling point. Thin sections of 5 teeth from 2 wild-caught baboons (Papio hamadryas anubis) were systematically analysed using this technique. Intra- and intertooth analyses of Sr/Ca ratios reveal a pattern of dietary development during the period of enamel formation that is consistent with observational data on the timing of weaning behaviour in anubis baboons.

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Citations

May 7, 2008·Proceedings of the National Academy of Sciences of the United States of America·Louise T HumphreyMalcolm Penn
Jun 17, 2014·Annals of Human Biology·Louise T Humphrey
Feb 10, 2016·Current Opinion in Pediatrics·Syam S AndraManish Arora
Oct 22, 2016·American Journal of Physical Anthropology·Iulia BădescuDaniel W Sellen
Jun 1, 2017·Proceedings of the National Academy of Sciences of the United States of America·Théo TacailVincent Balter
Jan 22, 2010·American Journal of Physical Anthropology·Kierstin K CatlettWilliam L Jungers
Nov 20, 2014·American Journal of Physical Anthropology·Takumi Tsutaya, Minoru Yoneda
Mar 13, 2014·American Journal of Physical Anthropology·Carola BorriesAndreas Koenig
Nov 4, 2020·Proceedings of the National Academy of Sciences of the United States of America·Alessia NavaStefano Benazzi
Jan 1, 2021·Methods in Ecology and Evolution·Casey T ClarkNicole Misarti
Mar 16, 2021·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·Tanya M SmithChristine Austin

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