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| Mendonça,Luciana B.; Anjos,Luiz dos. |
| We investigated flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae), a common ornithophilous shrub found in the riparian forest understory in the Upper Paraná River floodplain, Brazil. Flowers are distylous and the style-stamen dimorphism is accompanied by other intermorph dimorphisms in corolla length, anther length, and stigma lobe length and form. We did not observe strict reciprocity in the positioning of stigma and anthers between floral morphs. Flowering occurred during the rainy season, October to December. Nectar standing crop per flowerwas relatively constant throughout the day, which apparently resulted in hummingbirds visiting the plant throughout the day. Energetic content of the nectar in each flower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird-plant interactions; Heterostyly; Pollination; Brazilian Atlantic forest; Riparian vegetation; Conservation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000100006 |
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| Mendonça,Luciana Baza; Anjos,Luiz dos. |
| Nine species of birds - seven hummingbirds (Trochilidae) and two Passeriformes - were observed visiting the flowers of Erythrina speciosa Andrews (Fabaceae), a hummingbird-pollinated species present on the campus of Londrina State University, Paraná State, Brazil. Nectar in bagged flowers bore little relationship with nectar in flowers opened to foragers either regarding quantity or diurnal pattern of availability. Birds were more frequent early in the morning and their activity on flowers further declined, apparently following the pattern of nectar availability. The manner to which birds probed the flowers and, in consequence, their role on pollination were greatly determined by morphological traits and approaching behavior of birds. E. speciosa seemed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird-plant interactions; Nectar; Nectarivory. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000100002 |
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