biologia floral de virola surinamensis (rol.) warb. (myristicaceae) virola surinamensis (rol.) warb. (myristicaceae) floral biology

Clicks: 145
ID: 164757
2007
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Abstract
Neste artigo são apresentadas informações sobre a biologia floral de Virola surinamensis (Rol.) Warb. (Myristicaceae), espécie florestal dióica de relevante importância econômica na região amazônica. O estudo foi realizado em uma área de várzea próximo à bacia do igarapé Murutucum, lado direito do rio Guamá, localizada no Campus da Faculdade de Ciências Agrárias do Pará, na cidade de Belém, Estado do Pará, no período de janeiro a dezembro de 2001. Avaliou-se a biologia floral desde o aparecimento dos botões florais até a senescência das flores estaminadas, bem como a formação de frutos nas flores pistiladas. Testes bioquímicos foram aplicados para verificação de odor, pigmentos, osmóforos e receptividade do estigma. A observação no comportamento dos visitantes florais foi realizada durante o período diurno, registrando-se os horários de visitas, tempo de permanência na flor e freqüência; alguns indivíduos foram coletados com rede entomológica e identificados no Departamento de Zoologia do Museu Paraense Emílio Goeldi. A antese ocorreu entre 6 e 16 h nas flores estaminadas e entre 8 e 16 h nas flores pistiladas; a presença de odor foi constatada apenas nas flores estaminadas, enquanto os pigmentos e osmóforos foram encontrados em ambas as flores; o estigma mostrou-se receptivo no período entre 12 e 14 h. Os insetos da ordem diptera foram os visitantes mais freqüentes nas flores estaminadas e pistiladas e as espécies Copestylum sp. e Erystalys sp., as responsáveis pela polinização.
Information was obtained on the floral biology of Virola surinamensis (Rol.) Warb. (Myristicaceae), a dioecious arboreal species of great importance for the Amazon region economy. The study was carried out in the floodplain area near the Murucutu stream, on the right side of the Guamá River, at the Universidade Federal Rural da Amazônia-UFRA, Belém-Pará , from January to December 2001. Floral biology was assessed from floral bud phase to senescence stage in male flowers and fruit formation in female flowers. Biochemical tests were carried out to verify odor, pigment, osmophore pigments and stigma receptivity. Floral visitors were observed during the diurnal period and visiting time, flower permanence time and frequency were recorded. Some individuals were collected with entomological net and identified by the Zoology Department of the Emílio Goeldi Paranaense Museum. Anthesis occurred between 06:00 a.m. and 4:00 p.m. in the staminate flowers, and between 8:00 a.m. and 4:00 p.m. for the pistilate flowers. Odor was reported only in the staminate flowers and osmophore pigments in both flowers types. The stigma showed to be receptive between 12:00 and 2:00 p.m. Diptera order insects were the most frequent visitors on the staminate and pistilate flowers. The Copestylum sp. and Erystalys sp. were responsible for pollination.
Reference Key
jardim2007revistabiologia Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mario Augusto Gonçalves Jardim, Cléo Gomes da Mota
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Journal journal of veterinary medical research
Year 2007
DOI
10.1590/S0100-67622007000600020
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622007000600020
Keywords Keywords not found

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