Figure 3.

Enzyme-production study of the isolated strains in samples of honey and pollen from stingless bees from northern Argentina. (A) Heat map from the hierarchical clustering analysis of the strains that presented at least one of the types of enzyme activity evaluated (57 isolates). Values from 0 to 100 correspond to normalised enzyme activity data in all cases. Additional features such as harvest year, sample source, and producer bee type (Sj: Scaptotrigona jujuyensis, Tf: Tetragonisca fiebrigi) also helped to differentiate the examined strains, as indicated in the graphs to the right of the heat map. (B) Microbial diversity of the clusters formed by the hierarchical clustering method based on the enzymatic activities observed in the identified isolates.