Pollen resources and trophic niche breadth of Apis mellifera and Melipona obscurior (Hymenoptera, Apidae) in a subtropical climate in the Atlantic rain forest of southern Brazil

摘要: Pollen sources that comprise the trophic niche of native bee species Melipona obscurior and introduced Apis mellifera breadth this were studied in two areas Atlantic rain forest southern Brazil. obtained from forager bees during a period 12 months showed richness pollen types found each sample varied 5 to 21 for A. 1 10 M. obscurior. In both areas, had higher breadth. demonstrated temporal specialization, which was primarily related use floral with poricidal anthers. The non-native type Eucalyptus produced similar results species. Knowledge plant sustain communities Brazil contributes toward management conservation populations increases beekeeping stingless honey region.