Entomofauna visitante de Belamcanda chinensis (L.) DC (Iridaceae) durante o período de floração

Flowering entomofauna Belamcanda chinensis (L.) DC. (Iridaceae) during flowering time

A study of the reproductive biology of B. chinensis (L.) DC. (Iridaceae) was realized comprising floral biology and breeding systems. The floral biology studies included analyses of nectar production, occurence of osmophores, corolla pigments, ultraviolet reflexion and absortion patterns, viability of pollen, pollinators and flower visitors. The breeding systems were studied taking into account the results of manual pollinators tests. B. chinensis is self-compatible bul cross-pollination is more frequent. The effective pollinators are Plebeia droryana (Friese, 1906) (45,7%), Trigona spinipes (Fabricius, 1793) (27,3%), Tetragonisca angustula (Latreille, 1811) (9,3%). Others insects visitors are considered nectar and pollen thieves. The flowering begins generally in January and February. The complete reproductive cicle, as here considered, begining with floral bud production ending with development of mature fruits, lasts January to June. Seed dispersion is ornitocoric.

Belamcanda chinensis; pollination; insect visitors; floral biology; reproductive biology


Belamcanda chinensis; pollination; insect visitors; floral biology; reproductive biology

Entomofauna visitante de Belamcanda chinensis (L.) DC (Iridaceae) durante o período de floração

Flowering entomofauna Belamcanda chinensis (L.) DC. (Iridaceae) during flowering time

Maria de Jesus VitaliI; João Clovis Stanzani DutraI; Vera Lígia Letízio MachadoI,II

IDepartamento de Zoologia. Instituto de Biociências. Universidade Estadual de São Paulo. Caixa Postal 199, 13506-900 Rio Claro, São Paulo. Brasil

IIPesquisadora do CNPq

ABSTRACT

A study of the reproductive biology of B. chinensis (L.) DC. (Iridaceae) was realized comprising floral biology and breeding systems. The floral biology studies included analyses of nectar production, occurence of osmophores, corolla pigments, ultraviolet reflexion and absortion patterns, viability of pollen, pollinators and flower visitors. The breeding systems were studied taking into account the results of manual pollinators tests. B. chinensis is self-compatible bul cross-pollination is more frequent. The effective pollinators are Plebeia droryana (Friese, 1906) (45,7%), Trigona spinipes (Fabricius, 1793) (27,3%), Tetragonisca angustula (Latreille, 1811) (9,3%). Others insects visitors are considered nectar and pollen thieves. The flowering begins generally in January and February. The complete reproductive cicle, as here considered, begining with floral bud production ending with development of mature fruits, lasts January to June. Seed dispersion is ornitocoric.

Key words:Belamcanda chinensis, pollination, insect visitors, floral biology, reproductive biology

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AGRADECIMENTOS. Às professoras Dra Flávia Cristina Pinto Garcia e Dra Daniela Cristina Zappi pela determinação da espécie vegetal estudada e auxílio em diversas oportunidades.

Recebido em 30.III.1994; aceito em 28.VI.1995.

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Datas de Publicação

  • Publicação nesta coleção
    21 Jul 2009
  • Data do Fascículo
    1995

Histórico

  • Recebido
    30 Mar 1994
  • Aceito
    28 Jun 1995
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