Reproductive phenology and floral visitors of a Langsdorffia hypogaea (Balanophoraceae) population in Brazil.
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2017
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Resumo
The floral biology and reproductive phenology of Langsdorffia hypogaea were investigated. Flowering
is annual and high synchronicity was observed along two years, with significant correlation with rainfall.
The post-reproductive death of rhizomes suggests monocarpy. Flowers have anthers with extrorse
dehiscence and a stigma exposed above the perigonium, and are arranged in dense inflorescences which
produce extrafloral nectar. A total of 259 floral visitors were observed, mostly Hymenoptera/Formicidae
(149 individuals, 17 ant species), and eight species of Araneae. Although ants were frequent floral visitors,
a Coleoptera (Nitidulidae, Stelidota; 28% of total visits) species was the most abundant pollinator.
In consequence of herbivory only 12.5% of all inflorescence clusters fruited, and we could not evaluate
the percentage of pollinated plants due to insect damage. By being a rich resource in a season of scarcity,
activity on inflorescences of L. hypogaea of both pollinators and herbivores was high.
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Floral visitors, Floral morphology, High montane seasonal forests, Nitidulidae beetles
Citação
FREITAS, L. da S. et al. Reproductive phenology and floral visitors of a Langsdorffia hypogaea (Balanophoraceae) population in Brazil. Flora, v. 231, p. 51–57, 2017. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0367253017331523>. Acesso em: 25 ago. 2017.