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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/6667
Tipo: Artigo de Periódico
Título: Stingless bees and mass flowering trees in the canopy of Atlantic Forest: a tight relationship
Título(s) alternativo(s): Acta Botanica Brasilica
Autor(es): Ramalho, Mauro
Autor(es): Ramalho, Mauro
Abstract: This study demonstrates that stingless bees (Apidae, Hymenoptera) amount to approximately 70% of all bees foraging on flowers in the Brazilian Tropical Atlantic Rainforest. They also are the unique bee group concentrated in the upper stratum. It is hypothesized that this vertical distribution is a result of an uneven distribution of preferred floral resources within the forest strata. In the upper stratum, most of the trees that are highly visited by stingless bees produce small, inconspicuous, generalized flowers, clustered in dense inflorescences (mass flowering). These trees represent only 15% of the total melittophilous flora in the study area (96 plant species). In contrast, they attracted all 17 stingless bee species and more than 70% of all stingless bee individuals. Almost all these mass-flowering trees are hermaphroditic or monoecious, therefore the hypothesis that the stingless bees would be related to the abundance of dioecious trees in tropical rainforests was reexamined. It is proposed that small generalist stingless bees facilitate self-pollination and occasionally cross-pollinate these mass flowering trees. The tight relationship between stingless bees and mass-flowering trees is more properly in the center of a diffuse coevolutionary process, with the gradual replacement of other unpredictable, generalist and poor pollinators (e.g. small beetles) at the forest canopy.
Palavras-chave: Forest canopy
Stingless bees
Foraging stratification
Mass flowering
Atlantic forest
Editora / Evento / Instituição: Sociedade Botânica do Brasil
URI: http://www.repositorio.ufba.br/ri/handle/ri/6667
Data do documento: Jan-2004
Aparece nas coleções:Artigo Publicado em Periódico (Biologia)

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