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Pollination ecology of Caryocar brasiliense (Caryocaraceae) in Central Brazil cerrado vegetation

Published online by Cambridge University Press:  10 July 2009

Rogério Gribel
Affiliation:
Departamento de Ecologia, Instituto Nacional de Pesquisas da Amazonia, Caixa Postal 478, 69011–970 Manaus, AM, Brazil
John D. Hay
Affiliation:
Departamento de Ecologia, Fundação Universidade de Brasília, 70000 Brasília, DF, Brazil

Abstract

The floral biology, breeding system and pollination of Caryocar brasiliense were studied in the cerrado vegetation of Central Brazil. The large, yellowish-cream, brush-like flowers are pollinated mainly by glossophagine bats (Glossophaga soricina and Anoura geoffroyi). Three non-glossophagine bats (Phyllostomus discolor, Vampyrops lineatus and Carollia perspicillata) and two short probosisced hawk moths (Erinyis ello and Pseudosphinx tetrio) may also act as occasional pollinators. Caryocar brasiliense is self-compatible although it sets significantly more fruits when crossed than when selfed. The natural fruit set (fruit/flower ratio) and seed set (seed/ovule ratio) are 3.1% and 1.0% respectively. Most of the fruits and seeds are formed through the action of the flower visitors, despite the fact that about 20% of the non-visited flowers receive self pollen on at least one stigma.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1993

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