Data from: Evolution of morphological integration in the skull of Carnivora (Mammalia): changes in Canidae lead to increased evolutionary potential of facial traits
Machado, Fabio Andrade, National Scientific and Technical Research Council
Zahn, Thiago Macek Gonçalves, University of Sao Paulo
Marroig, Gabriel, University of Sao Paulo
Published Apr 23, 2018 on Dryad.
Cite this dataset
Machado, Fabio Andrade; Zahn, Thiago Macek Gonçalves; Marroig, Gabriel (2018). Data from: Evolution of morphological integration in the skull of Carnivora (Mammalia): changes in Canidae lead to increased evolutionary potential of facial traits [Dataset]. Dryad. https://doi.org/10.5061/dryad.142jn5t
Morphological integration refers to the fact that different phenotypic traits of organisms are not fully independent from each other, and tend to covary to different degrees. The covariation among traits is thought to reflect properties of the species' genetic architecture and thus can have an impact on evolutionary responses. Furthermore, if morphological integration changes along the history of a group, inferences of past selection regimes might be problematic. Here we evaluated the stability and evolution of the morphological integration of skull traits in Carnivora by using evolutionary simulations and phylogenetic comparative methods. Our results show that carnivoran species are able to respond to natural selection in a very similar way. Our comparative analyses show that the phylogenetic signal for pattern of integration is lower than that observed for morphology (trait averages), and that integration was stable throughout the evolution of the group. That notwithstanding, Canidae differed from other families by having higher integration, evolvability, flexibility and allometric coefficients on the facial region. These changes might have allowed canids to rapidly adapt to different food sources, helping to explain not only the phenotypic diversification of the family, but also why humans were able to generate such a great diversity of dog breeds through artificial selection.
Individual species phenotypic covariance matrices. Zip file containing 145 CSV format-tables.
Align cytochrome b sequences
Align cytochrome b sequences used to estimate branch-lengths.
Phylogenetic hypothesis for Carnivora
Carnivora Cladogram used in analyses. Three in Newick format with no branch-lengths.
LDA scores for Carnivora
Linear Discriminant Scores for the averages phenotypes for each taxa. LDA scores were used to calculate mahalanobis distances and were used as input in comparative analyses.
Random Skewers Table
Full Random Skewers table of pairwise comparisons.Values below the diagonal are observed values and the ones above the diagonal are corrected values. The diagonal contain the matrix repeatabilities.