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Can growth in captivity alter the calcaneal microanatomy of a wild ungulate?

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Romain Cottereau
Katia Ortiz
  • Function : Author
Yann Locatelli
Alexandra Houssaye

Abstract

Reduced mobility associated with captivity induces changes in biomechanical stress on the skeleton of domesticated animals. Due to bone plasticity, bone's morphology and internal structure can respond to these new biomechanical stresses over individuals' lifetime. In a context where documenting early process of animal domestication is a real zooarchaeological challenge. This study will test the hypothesis that change in mobility patterns during a wild ungulate's life will alter the internal structure of its limb bones and provide a proof of concept for the application of this knowledge in Zooarchaeology. Using the calcaneus as a phenotypic marker through qualitative and quantitative 3D microanatomical analyses, we relied on a comparative study across wild boars (Sus scrofa) populations from controlled experimental conditions with different mobility patterns (natural habitat, large pen, and stall) and archaeological specimens collected from middle and late Mesolithic as surrogate for the norm of reaction in European wild boar phenotype before the spread of agriculture and domestic pigs. Results provide evidence for compressive and tensile forces as the main elements affecting the variation in the cortical thickness along the calcaneus. Furthermore, changes in the internal structure of the calcaneus between mobility patterns are observed but their intensity is not directly associated with the degree of mobility restriction and only weakly impacted by the size or weight of the individuals. Despite having greater bone volume, the calcaneus of the Can growth in captivity alter the calcaneal microanatomy of a wild ungulate? .
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Dates and versions

hal-03859279 , version 1 (18-11-2022)
hal-03859279 , version 2 (06-01-2023)

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Romain Cottereau, Katia Ortiz, Yann Locatelli, Alexandra Houssaye, Thomas Cucchi. Can growth in captivity alter the calcaneal microanatomy of a wild ungulate?. 2022. ⟨hal-03859279v1⟩
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