A test for paedomorphism in domestic pig cranial morphology

Allowen Evin, Joseph Owen, Greger Larson, Mélanie Debiais-Thibaud, Thomas Cucchi, Una Strand Vidarsdottir, Keith Dobney

Research output: Contribution to journalArticle

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Abstract

Domestic animals are often described as paedomorphic, meaning that they retain juvenile characteristics into adulthood. Through a three-dimensional landmark-based geometric morphometric analysis of cranial morphology at three growth stages, we demonstrate that wild boar (n = 138) and domestic pigs (n = 106) (Sus scrofa) follow distinct ontogenetic trajectories. With the exception of the size ratio between facial and neurocranial regions, paedomorphism does not appear to be the primary pattern describing the observed differences between wild and domestic pig cranial morphologies. The cranial phenotype of domestic pigs instead involves developmental innovation during domestication. This result questions the long-standing assumption that domestic animal phenotypes are paedomorphic forms of their wild counterparts.

Original languageEnglish
Article number20170321
Pages (from-to)1-5
Number of pages5
JournalBiology Letters
Volume13
Issue number8
Early online date9 Aug 2017
DOIs
Publication statusPublished - Aug 2017

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Sus scrofa
domestic animals
swine
Domestic Animals
phenotype
testing
wild boars
domestication
adulthood
trajectories
Phenotype
developmental stages
Growth

Keywords

  • domestication
  • heterochrony
  • paedomorphism
  • ontogeny
  • Sus scrofa
  • geometric morphometrics

Cite this

Evin, A., Owen, J., Larson, G., Debiais-Thibaud, M., Cucchi, T., Vidarsdottir, U. S., & Dobney, K. (2017). A test for paedomorphism in domestic pig cranial morphology. Biology Letters, 13(8), 1-5. [20170321]. https://doi.org/10.1098/rsbl.2017.0321

A test for paedomorphism in domestic pig cranial morphology. / Evin, Allowen; Owen, Joseph; Larson, Greger; Debiais-Thibaud, Mélanie; Cucchi, Thomas; Vidarsdottir, Una Strand; Dobney, Keith.

In: Biology Letters, Vol. 13, No. 8, 20170321, 08.2017, p. 1-5.

Research output: Contribution to journalArticle

Evin, A, Owen, J, Larson, G, Debiais-Thibaud, M, Cucchi, T, Vidarsdottir, US & Dobney, K 2017, 'A test for paedomorphism in domestic pig cranial morphology', Biology Letters, vol. 13, no. 8, 20170321, pp. 1-5. https://doi.org/10.1098/rsbl.2017.0321
Evin A, Owen J, Larson G, Debiais-Thibaud M, Cucchi T, Vidarsdottir US et al. A test for paedomorphism in domestic pig cranial morphology. Biology Letters. 2017 Aug;13(8):1-5. 20170321. https://doi.org/10.1098/rsbl.2017.0321
Evin, Allowen ; Owen, Joseph ; Larson, Greger ; Debiais-Thibaud, Mélanie ; Cucchi, Thomas ; Vidarsdottir, Una Strand ; Dobney, Keith. / A test for paedomorphism in domestic pig cranial morphology. In: Biology Letters. 2017 ; Vol. 13, No. 8. pp. 1-5.
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