FIGURE 4.

Mean percentage of returning foragers with no load, only nectar, only pollen, only resin, pollen and nectar, resin and nectar, and resin and pollen of the seven different stingless bee species observed in the forest of the reserves. Note the differences between the low resin collectors (N. tristella, Plebeia sp., Scaptotrigona sp. 1, Scaptotrigona sp. 2) and high resin collectors (P. occidentalis, T. ziegleri, and T. angustula) in the percentage of foragers coming back with resin.