Fig. 8. Results of two cluster analyses showing the relative similarity of the chemical composition of the complex odor mixtures crab odor (CO), inverse crab odor (ICO), shrimp odor (SO) and mullet odor (MO). (A) Cluster analysis that uses ‘percentage of disagreement’ as the dissimilarity measure, which emphasizes the components unique to the odors (i.e. the presence or absence of components). (B) Cluster analysis that uses ‘1 minus the Pearson r correlation’ as the dissimilarity measure, which emphasizes differences in the relative concentrations of each component.