Meaningful measures of enamel hypoplasia: Prevalence and comparative intensity of developmental stress.
enamel geometry
growth rates
methods
perikymata
Journal
American journal of biological anthropology
ISSN: 2692-7691
Titre abrégé: Am J Biol Anthropol
Pays: United States
ID NLM: 101770171
Informations de publication
Date de publication:
04 2023
04 2023
Historique:
revised:
02
12
2022
received:
09
09
2022
accepted:
09
01
2023
pubmed:
16
2
2023
medline:
22
3
2023
entrez:
15
2
2023
Statut:
ppublish
Résumé
Developmental stress causing enamel thinning is an important topic in primate biology. Because taxa differ in growth rates and enamel thickness, the goal is to provide a new method allowing direct comparison of prevalence and salience of enamel defects among samples. Casts of ape teeth spanning the Late Pleistocene to Late Miocene from three site areas of increasing seasonality, equator (Sumatra) to 20° (Vietnam) and 25°N latitude (China), were examined for enamel defects among paleo-orangutans (n = 571, 222, respectively) and Lufengpithecus lufengensis (n = 198). Frequency of affected teeth and number of linear enamel hypoplasia were recorded. Defect dimensions were measured with a confocal microscope. Simple prevalence is compared to weighted prevalence (%), calculated by dividing "number of LEH from specific tooth groups" by "specific tooth sample size"; this quantity divided by "tooth-specific years of imbricational enamel formation." Defect dimensions are reduced to a dimensionless index termed "enamel deficit ratio" through dividing "daily enamel deficit" by "daily secretion rate." Weighted prevalence increases to the North, highlighting latitudinal similarities. In contrast, "enamel deficit ratio," designed to express comparative severity of developmental stress among samples, was least in the high latitude sample and differed little between paleo-orangutan samples. The actual numbers generated are not as important as efficacy of the proposed methods for other taxa. Developmental stress appears least severe in the high latitude (Lufengpithecus) sample but affects a greater proportion, compared to paleo-orangutans. Regardless of findings, the proposed solutions to improve comparability of disparate samples, yield reasonable results.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
761-767Informations de copyright
© 2023 The Author. American Journal of Biological Anthropology published by Wiley Periodicals LLC.
Références
Barrón-Ortiz, C. I., Jass, C. N., Barrón-Corvera, R., Austen, J., & Theodor, J. M. (2019). Enamel hypoplasia and dental wear of north American late Pleistocene horses and bison: An assessment of nutritionally based extinction models. Paleobiology, 45(3), 484-515. https://doi.org/10.1017/pab.2019.17
Bhopal, R. S. (2016). Concepts of epidemiology (3rd ed.). Oxford University Press.
Chollet, M. B., & Teaford, M. F. (2010). Ecological stress and linear enamel hypoplasia in Cebus. American Journal of Physical Anthropology, 142(1), 1-6. https://doi.org/10.1002/ajpa.21182
Franz-Odendaal, T., Chinsamy, A., & Lee-Thorp, J. (2004). High prevalence of enamel hypoplasia in an early Pliocene giraffid (Sivatherium hendeyi) from South Africa. Journal of Vertebrate Paleontology, 24(1), 235-244. https://doi.org/10.1671/19
Guatelli-Steinberg, D. (2003). Macroscopic and microscopic analyses of linear enamel hypoplasia in Plio-Pleistocene south African hominins with respect to aspects of enamel development and morphology. American Journal of Physical Anthropology, 120, 309-322. https://doi.org/10.1002/ajpa.10148
Guatelli-Steinberg, D., & Benderlioglu, Z. (2006). Brief communication: Linear enamel hypoplasia and the shift from irregular to regular provisioning in Cayo Santiago rhesus monkeys (Macaca mulatta). American Journal of Physical Anthropology, 131(3), 416-419. https://doi.org/10.1002/ajpa.20434
Guatelli-Steinberg, D., Ferrell, R. J., & Spence, J. (2012). Linear enamel hypoplasia as an indicator of physiological stress in great apes: Reviewing the evidence in light of enamel growth variation. American Journal of Physical Anthropology, 148(2), 191-204. https://doi.org/10.1002/ajpa.21619
Guatelli-Steinberg, D., Ferrell, R. J., Spence, J., Talabere, T., Hubbard, A., & Schmidt, S. (2009). Sex differences in anthropoid mandibular canine lateral enamel formation. American Journal of Physical Anthropology, 140(2), 216-233. https://doi.org/10.1002/ajpa.21047
Guatelli-Steinberg, D., & Skinner, M. F. (2000). Prevalence and etiology of linear enamel hypoplasia in monkeys and apes from Asia and Africa. Folia Primatologica, 71, 115-132. https://doi.org/10.1159/000021740
Hillson, S. (2017). Enamel hypoplasia=stress? Stressed out: Debunking the stress myth in the study of archaeological human remains. https://www.ucl.ac.uk/archaeology/news-events/conferences-ucl-institute-archaeology
Hillson, S., & Bond, S. (1997). Relationship of enamel hypoplasia to the pattern of tooth crown growth: A discussion. American Journal of Physical Anthropology, 104(1), 89-103. https://doi.org/10.1002/(SICI)1096-8644(199709)104:1<89::AID-AJPA6>3.0.CO;2-8
Hubbard, A., Guatelli-Steinberg, D., & Sciulli, P. W. (2009). Under restrictive conditions, can the widths of linear enamel hypoplasias be used as relative indicators of stress episode duration? American Journal of Physical Anthropology, 138(2), 177-189. https://doi.org/10.1002/ajpa.20917
Kuykendall, K. (1996). Dental development in chimpanzees (Pan troglodytes): The timing of tooth calcification stages. American Journal of Physical Anthropology, 99, 135-157. https://doi.org/10.1002/(SICI)1096-8644(199601)99:1<135::AID-AJPA8>3.0.CO;2
Lacruz, R. S., Dean, M. C., Ramirez-Rozzi, F., & Bromage, T. G. (2008). Megadontia, striae periodicity and patterns of enamel secretion in Plio-Pleistocene fossil hominins. Journal of Anatomy, 213(2), 148-158. https://doi.org/10.1111/j.1469-7580.2008.00938.x
McGrath, K., El-Zaatari, S., Guatelli-Steinberg, D., Stanton, M. A., Reid, D. J., Stoinski, T. S., Cranfield, M. R., Mudakikwa, A., & McFarlin, S. C. (2018). Quantifying linear enamel hypoplasia in Virunga Mountain gorillas and other great apes. American Journal of Physical Anthropology, 166(2), 337-352. https://doi.org/10.1002/ajpa.23436
McGrath, K., Limmer, L. S., Lockey, A.-L., Guatelli-Steinberg, D., Reid, D. J., Witzel, C., Bocaege, E., McFarlin, S. C., & El Zaatari, S. (2021). 3D enamel profilometry reveals faster growth but similar stress severity in Neanderthal versus Homo sapiens teeth. Scientific Reports, 11(1), 522. https://doi.org/10.1038/s41598-020-80148-w
McGrath, K., Reid, D. J., Guatelli-Steinberg, D., Arbenz-Smith, K., El Zaatari, S., Fatica, L. M., Kralick, A. E., Cranfield, M. R., Stoinski, T. S., Bromage, T. G., Mudakikwa, A., & McFarlin, S. C. (2019). Faster growth corresponds with shallower linear hypoplastic defects in great ape canines. Journal of Human Evolution, 137, 102691. https://doi.org/10.1016/j.jhevol.2019.102691
O'Hara, M. C., & Guatelli-Steinberg, D. (2020). Differences in enamel defect expression and enamel growth variables in Macaca fascicularis and Trachypithecus cristatus from Sabah, Borneo. Journal of Archaeological Science, 114, 105078. https://doi.org/10.1016/j.jas.2020.105078
Schwartz, G. T., Reid, D. J., Dean, C., & Zihlman, A. L. (2006). A faithful record of stressful life events preserved in the dental developmental record of a juvenile gorilla. International Journal of Primatology, 27, 1201-1219, 1219. https://doi.org/10.1007/s10764-006-9051-2
Skinner, M. F. (1986). Enamel hypoplasia in sympatric chimpanzee and gorilla. Human Evolution, 1, 289-312. https://doi.org/10.1007/bf02436704
Skinner, M. F. (2014). Variation in perikymata counts between repetitive episodes of linear enamel hypoplasia among orangutans from Sumatra and Borneo. American Journal of Physical Anthropology, 154, 125-139. https://doi.org/10.1002/ajpa.22485
Skinner, M. F. (2019). Developmental stress in South African hominins: Comparison of recurrent enamel hypoplasias in Australopithecus africanus and Homo naledi. South African Journal of Science, 115(5/6), 1-10. https://doi.org/10.17159/sajs.2019/5872
Skinner, M. F. (2021). Cold discomfort: A model to explain repetitive linear enamel hypoplasia among Pan troglodytes and Pan paniscus. International Journal of Primatology, 42(3), 370-403. https://doi.org/10.1007/s10764-021-00206-6
Skinner, M. F. (in preparation). Developmental distress in Southeast Asian fossil apes: repetitive linear enamel hypoplasia and climate.
Skinner, M. F., & Pruetz, J. D. (2012). Reconstruction of periodicity of repetitive linear enamel hypoplasia (rLEH) from perikymata counts on imbricational enamel among dry-adapted chimpanzees (Pan troglodytes versus) from Fongoli, Senegal. American Journal of Physical Anthropology, 149, 468-482. https://doi.org/10.1002/ajpa.22145
Skinner, M. F., & Skinner, M. M. (2017). Orangutans, enamel defects, and developmental health: A comparison of Borneo and Sumatra. American Journal of Primatology, 79(8), e22668. https://doi.org/10.1002/ajp.22668
Skinner, M. F., Skinner, M. M., & Boesch, C. (2012). Developmental defects of the dental crown in chimpanzees of the Taï National Park, Côte D'ivoire, coronal waisting. American Journal of Physical Anthropology, 149, 272-282. https://doi.org/10.1002/ajpa.22123
Smith, T. M., Martin, L. B., & Leakey, M. G. (2003). Enamel thickness, microstructure and development in Afropithecus turkanensis. Journal of Human Evolution, 44(3), 283-306. https://doi.org/10.1016/S0047-2484(03)00006-X
Suckling, G., Elliott, D. C., & Thurley, D. C. (1986). Macroscopic appearance and associated histological changes in the enamel organ of hypoplastic lesions of sheep incisor teeth resulting from induced parasitism. Archives of Oral Biology, 31, 427-439. https://doi.org/10.1016/0003-9969(86)90016-6