Figure 7. The estimated trait values of F2 hybrid
pupfish (Snail-eater X Scale-eater ) compared to F0 parental species
from Crescent Pond and Little Lake. Grey dots forming a histogram
beneath each trait show the distribution of F2 phenotypes; The colored
density graph above each histograms depict the posterior draws from a
Bayesian model with the 18 craniofacial trait values as the response
variable and population as the fixed effect. Blue circles represent the
F0 snail-eater parental phenotype for each trait, while orange triangles
represent the F0 scale-eater parental phenotype for each trait. Finally,
grey diamonds depict the mid-parent trait value which represents the
expected phenotype trait value under the assumptions of additivity.