Articles | Volume 14, issue 1
Standard article
14 Jan 2015
Standard article |  | 14 Jan 2015

Reproductive ecology of buzz-pollinated Ouratea spectabilis trees (Ochnaceae) in Brazilian Cerrados

D. Montesinos and P. Oliveira

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Cited articles

Barbosa, A. A. A.: Aspectos da ecologia reprodutiva de três espécies de Qualea (Vochysiaceae) num cerrado de Brasília, DF, Brasília, UnB, Disertação de Mestrado, 1983.
Barros, M. A. G.: Fenologia da floração, estratégias reprodutivas e polinização de espécies simpãtricas de Byrsonima Rich (Malpighiaceae), Rev. Brasil. Biol., 52, 343–353, 1992.
Barros Henriques, R. P.: Ecologia da polinização de Ouratea hexasperma (St. Hil.) Bail (Ochnaceae) em cerrado no Brasil central, Brasília, 4, 46–64, 1999.
Bridgewater, S., Ratter, J. A., and Ribeiro, J. F.: Biogeographic patterns, b-diversity and dominance in the cerrado biome of Brazil, Biodiv. Conserv., 13, 2295–2318, 2004.
Buchmann, S. L.: Buzz pollination in angiosperms, edited by: Jones, C. E. and Little, R. J., Handbook of experimental pollination biology, Van Nostrand Reinhold, New York, 73–113, 1983.
Short summary
Ouratea spectabilis is a tree in the Brazilian savannas, or cerrados. Only a few specialized insects can produce the specific vibrations to liberate their pollen, in what is known as "buzz pollination". It is self-incompatible, and self-pollination reduced fertility to the level of interspecific crosses with co-generic species. Pollen viability was high, but in spite of pollen supplementation seed-to-ovule ratios were never over 30%, likely because of environmental stress.