Food niche of solitary and social bees (Hymenoptera: Apoidea) in a Neotropical Savanna

Author:

Santos Claudia Oliveira dos,Aguiar Cândida Maria LimaORCID,Martins Celso FeitosaORCID,Santana Edson Braz,França FlávioORCID,Melo Efigênia,Santos Gilberto Marcos M.

Abstract

In this study we investigated the group of floral resources that support bee populations from a bee assemblage in a savanna, and the way in which bee species use these food resources, with an emphasis on the breadth and overlap of trophic niches. The interactions between 75 species of bees and 62 species of plants visited to obtain floral resources were recorded on a Brazilian savanna site. The bee species explored a diverse set of plant species, but concentrated the collection of resources in a few plant species. The distribution of the samples over a long period favored a robust characterization of the food niche of the bee populations. Byrsonima sericea, Serjania faveolata, and Stigmaphyllon paralias were the plant species with the highest number of links with bees. In general, the trophic niche overlap was low, with 75% of pairs of bee species having a niche overlap (NO) less than 0.33. Only four pairs showed high overlap (NO>0.70) and all cases were related to the exploitation of floral resources provided by B. sericea, a key resource for the maintenance of the local bee fauna, an oil and pollen provider.

Publisher

Universidade Estadual de Feira de Santana

Subject

Insect Science

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