Consulta: creatorFacets:"Maruyama,Pietro Kiyoshi"
Registros recuperados: 4
Data/hora: 08/06/2024 13:42:04

Pollination and breeding system of Canna paniculata(Cannaceae) in a montane Atlantic Rainforest: asymmetric dependence on a hermit hummingbird
Provedor de dados: 39
Autores: Maruyama,Pietro Kiyoshi; Vizentin-Bugoni,Jeferson; Dalsgaard,Bo; Sazima,Marlies.
We studied the pollination biology of Canna paniculata (Cannaceae), a plant species common in the Atlantic Rainforest of southeastern Brazil. The species presents specialized ornithophilous flowers, which in our study area are solely pollinated by the hermit hummingbird Phaethornis eurynome. Although C. paniculata is capable of bearing fruit after self-pollination, it requires pollinators for reproduction. We discuss the importance of hermit hummingbirds for the reproduction of specialized ornithophilous plants such as C. paniculata, including their asymmetric dependence on hermit hummingbirds - core pollinators in Neotropical forest ecosystems.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Hummingbirds; Ornithophily; Phaethornis eurynome; Serra do Mar; Zingiberales.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100157

When hummingbirds are the thieves: visitation effect on the reproduction of Neotropical snowbell Styrax ferrugineus Nees &amp;amp; Mart (Styracaceae)
Provedor de dados: 39
Autores: Maruyama,Pietro Kiyoshi; Custódio,Luciana Nascimento; Oliveira,Paulo Eugênio.
The spectrum of floral visitors associated with a particular plant is frequently larger than predicted by the traditional concept of floral syndromes and the role that unpredicted visitors play in plant reproduction deserves attention. Hummingbirds are frequently recorded visiting flowers with distinct floral syndromes, especially in some hummingbird flower poor ecosystem such as the Cerrado. In this study we investigated the effect of frequent hummingbird visits on the reproduction of melittophilous Styrax ferrugineus. The flowers were visited by many different insect groups and visits by hummingbirds were frequent, especially early in the morning when nectar availability was higher. Nectar parameters varied considerably during the flower life span, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Nectar dynamics; Nectar thieves; Pollination syndromes.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000100007

Sexual ratio and floral biology of the dioecious Neea theifera Oerst. (Nyctaginaceae) in a cerrado rupestre of central Brazil
Provedor de dados: 39
Autores: Amorim,Felipe Wanderley; Mendes-Rodrigues,Clesnan; Maruyama,Pietro Kiyoshi; Oliveira,Paulo Eugênio.
Dioecy is characterized by a complete separation of sexual functions on male and female plants. It has evolved many times in flowering plants and is widespread among distinct Angiosperm families. It is viewed as a reproductive strategy to reduce endogamy, and to promote optimal resource allocation between male and female sexual functions. Neea theifera is a common species in Cerrado, neotropical savannas in Brazil, but information regarding its reproductive biology is still incomplete. In order to investigate how environmental conditions possibly affect this dioecious species, we studied its floral biology, sex ratio and spatial distribution of sexual morphs along a soil-altitudinal gradient. The sex ratio did not significantly deviate from the expected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitudinal gradient; Dioecy; Neotropical savanna; Sexual structure; Pollination.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000400006

What is on the menu for frugivorous birds in the Cerrado? Fruiting phenology and nutritional traits highlight the importance of habitat complementarity
Provedor de dados: 39
Autores: Maruyama,Pietro Kiyoshi; Melo,Celine; Pascoal,Camila; Vicente,Eduardo; Cardoso,João Custódio Fernandes; Brito,Vinícius Lourenço Garcia; Oliveira,Paulo Eugênio.
ABSTRACT The relationship between plants and frugivorous animals is modulated by morphological and nutritional characteristics of fruits, as well as their seasonal availability across habitats. We evaluated fruiting phenology, fruit morphology and nutritional characteristics of 35 abundant plant species from 15 families associated with frugivorous birds from distinct habitats in the Cerrado (savanna, forest, and palm swamp). For a subset of 16 plant species, we also evaluated the overlap in interactions with frugivorous birds using data from the literature. Open-habitat plants had their fruiting peak during the rainy season, while fruiting of forest species was evenly distributed across the year. Plants of the same family exhibited similar fruit morphology...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copaifera langsdorffii; Matayba guianensis; Miconia rubiginosa; Neotropical savanna; Ouratea; Rourea induta; Rudgea viburnoides; Seed dispersal; Styrax ferrugineus; Vereda.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300572