Journal
ROYAL SOCIETY OPEN SCIENCE
Volume 4, Issue 10, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rsos.170876
Keywords
ontogeny; development; dog; cat; horse; modularity
Categories
Funding
- Swiss National Science Foundation [31003A_169395]
- Swiss Bilateral Programme
- [PICT 2012-1583]
- [PICT 2015-2389]
- [PICT 2014-3182]
- Swiss National Science Foundation (SNF) [31003A_169395] Funding Source: Swiss National Science Foundation (SNF)
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As shown in a taxonomically broad study, domestication modifies postnatal growth. Skull shape across 1128 individuals was characterized by 14 linear measurements, comparing 13 pairs of wild versus domesticated forms. Among wild forms, the boar, the rabbit and the wolf have the highest proportion of allometric growth, explaining in part the great morphological diversity of the domesticated forms of these species. Wild forms exhibit more isometric growth than their domesticated counterparts. Multivariate comparisons show that dogs and llamas exhibit the greatest amount of differences in trajectories with their wild counterparts. The least amount is recorded in the pig-boar, and camel and horse pairs. Bivariate analyses reveal that most domesticated forms have growth trajectories different from their respective wild counterparts with regard to the slopes. In pigs and camels slopes are shared and intercepts are different. There is a trajectory extension in most domesticated herbivores and the contrary pattern in carnivorous forms. However, there is no single, universal and global pattern of paedomorphosis or any other kind of heterochrony behind the morphological diversification that accompanies domestication.
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