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Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) Acta Botanica
Abreu,Vanessa Holanda Righetti de; Mendonça,Claudia Barbieri Ferreira; Gonçalves-Esteves,Vania.
We analyzed the pollen grains of 11 species within the subfamily Bombacoideae. The pollen grains were acetolyzed, after which they were analyzed and photographed under light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed under scanning electron microscopy. We studied pollen characters such as shape, size, exine ornamentation and aperture type. The species were separated by a pollen key, which considers the presence or absence of "calotte" in the pollen grains. This attribute separated Ceiba and Eriotheca from the other genera. Some species are differentiated by specific characters: in Bombacopsis glabra and B. stenopetala, the sexine is rugulate or "vermiculate" with isolated pilate elements; in B. calophylla, the pollen grains...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Bombacoideae; Palynology; Rio de Janeiro.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300007
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Pollen sources used by Frieseomelitta Ihering 1912 (Hymenoptera: Apidae: Meliponini) bees along the course of the Rio Negro, Amazonas, Brazil Acta Botanica
Pimentel,Alyne Daniele Alves; Absy,Maria Lucia; Rech,André Rodrigo; Abreu,Vanessa Holanda Righetti de.
ABSTRACT Insect pollination has influenced the evolution and diversification of angiosperms. Consequently, knowing plants used as food sources by bees, the most important pollinator group, is the first step toward understanding how their ecological relationships works. Pollen source information is also highly relevant for bee management and associated fruit and seed production. Accordingly, to improve understanding of the trophic ecology of these bees and their relationships with native Amazonian plants the current study identified, quantified and compared pollen stored in nests of Frieseomelitta stingless bees along the Rio Negro, Amazonas, Brazil. A total of 31 pollen pots were sampled and found to contain 65 pollen types distributed across 52 genera and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Feeding behavor; Meliponicultura; Stingless bees; Trophic resources.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200371
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