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We would like to express our gratitude to museums and research institutions of Argentina (Museo del Fin del Mundo, Ushuaia; CADIC, Ushuaia; Museo Etnografico Juan B. Ambrosetti, Facultad de Filosofia y Letras, Universidad de Buenos Aires) and Chile (Instituto de la Patagonia, Punta Arenas) for the permission to study the human remains housed at those places. We thank Patricia I. Palacio for her help with the design of the figures. This research was supported by FONCyT-PICT 0575, PIP 112 201201 00359 CO of Argentina and a CONICET postdoctoral fellowship awarded to one of the authors (MDDdC). The research group Laboratorio de Poblaciones del Pasado (LAPP) has been supported by Projects HAR2016-78036-P, HAR2016-74846-P, HAR2017-82755-P, HAR2017-83004-P (Spanish Government) and a grant (ref. 38360) from The Leakey Foundation.

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Possible environment influence in spine segmentation anomalies

Publicado en:European Journal of Anatomy. 27 (3): 247-269 - 2023-05-01 27(3), DOI: 10.52083/RRXI5320

Autores: D'Angelo del Campo, M.D.; Pastor, S.; Medialdea, L.; Caballero Grijalba, M.; García Laborde, P.; Salemme, M.; Campo Martín, M.; González Martín, A.; Seldes, V.; Aníbal Guichón, R.;

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Segmentation anomalies of the spine transformations are relatively common in humans, mainly in adjacent regions. Its aetiology is multifactorial, a combination of genetic, environmental, and epigenetic interaction. A sample of 50 adult individuals of both sexes from two different sites and chronologies of the current Argentine territory was examined. This work proposes a new approach to analyse segmentation anomalies, considering the taphonomic characteristics of the spine, together with the most common occasional contour shifts of such anomalies. Likewise, a bibliographic review was conducted to compile the knowledge achieved to date on this topic. The results showed different patterns of expression of segmentation anomalies among the analysed samples, with the lumbosacral transformations being the most prevalent. The similarities and disparities observed between Southern Patagonian samples and Inuit populations suggest that cold, as an environmental factor, could play an important role in the phenotypic plasticity of human populations. Similarly, hypoxia could influence the sample from Pukara de Tilcara. Due to the scarce existing methodological standardization for addressing segmentation anomalies, a systematization of the methods used to analyse segmentation anomalies is recommended; our approach is a proposal for this purpose.

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