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Acta Biológica Colombiana

versão impressa ISSN 0120-548X


OLIVEIRA-JUNIOR, José Max Barbosa de et al. ORCHID BEES (APIDAE: EUGLOSSINI) IN A FOREST FRAGMENT IN THE ECOTONE CERRADO-AMAZONIAN FOREST, BRAZIL. Acta biol.Colomb. [online]. 2015, vol.20, n.3, pp.67-78. ISSN 0120-548X.

This paper presents information about the species richness and abundance of orchid bees in the transitional area between the Cerrado and the Amazon Forest in the Xingu river basin. The males were collected in a forest fragment in the municipality of Ribeirão Cascalheira, northeast Mato Grosso state, Brazil, between 1 and 5 November 2011. Benzyl benzoate, 1.8 cineole, eugenol and vanillin were used as baits, to attract the bees using insect nets and methyl salicylate was used only in the bottle traps. A total of 168 males belonged to four of five Euglossini genera distributed among 16 species were recorded. The greatest species richness was registered in the genus Euglossa, however Eulaema nigrita, was the most abundant Euglossine species in the community. The species richness varied between the edge and the first point within the fragment. The males were more active between 10:00 and 11:00 h, and the 1.8 cineole was the most attractive substance. The fragment studied contained representative species richness of orchid bees in a region of widespread environmental heterogeneity, which is still largely unknown as regards its pollinators and deserves attention for the compilation of new inventories.

Palavras-chave : attraction efficiency; baits; Brazil; fragmentation; pollinators.

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