Bee Pollination
Mostrando 1-12 de 49 artigos, teses e dissertações.
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1. Pollen sources used by Frieseomelitta Ihering 1912 (Hymenoptera: Apidae: Meliponini) bees along the course of the Rio Negro, Amazonas, Brazil
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
Acta Bot. Bras.. Publicado em: 2020-06
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2. Effects of Herbicides on the Survival of the Brazilian Native Bee Melipona scutellaris Latreille, 1811 (Hymenoptera: Apidae)
RESUMO: As abelhas nativas são polinizadores-chave para plantas nativas e cultivadas. Compreender os efeitos dos produtos utilizados nas culturas sobre as abelhas é crucial e pode ajudar a estabelecer medidas de manejo que ofereçam mais proteção. O objetivo deste estudo foi avaliar a influência de metade da dose comercial, da dose comercial (2,4-D 1.00
Planta daninha. Publicado em: 02/12/2019
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3. Native bee fauna of tomato crops: a comparison of active sampling and pan trapping methods
RESUMO O tomate é amplamente cultivado em todo o mundo e requer polinização por abelhas nativas ou manejadas para realizar o pleno potencial de produção dos frutos. Para investigar a riqueza e abundância de espécies de abelhas nativas em plantações de tomate do Centro-Oeste do Brasil, dois métodos de amostragem (armadilhas pan-trap e amostragem ati
Iheringia, Sér. Zool.. Publicado em: 09/09/2019
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4. Nesting and reproductive habits of the solitary bee Centris analis in trap nests under a tropical climate
RESUMO A polinização é um fator essencial na produção agrícola mundial e existe a necessidade de aumentar o número de espécies de abelhas que podem ser criadas para a polinização na agricultura, como a abelha solitária coletora de óleo Centris (Heterocentris) analis (Fabricius, 1804). Aqui, os comportamentos de nidificação e reprodutivo dessa a
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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5. Trade off between quantity and size of pollen grains in the heterandrous flowers of Senna pendula (Fabaceae)
ABSTRACT Heteranthery, the presence of different types of stamens in a flower, may reduce the conflict between pollinators and plants by ensuring the resource for the pollinator without drastically affecting the availability of viable male gametes for fertilization, according to the division-of-labor hypothesis. We investigated whether the poricidal anthers
Acta Bot. Bras.. Publicado em: 30/07/2018
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6. Are native bees and Apis mellifera equally efficient pollinators of the rupestrian grassland daisy Aspilia jolyana (Asteraceae)?
ABSTRACT Most angiosperms rely on animals for pollination, and insects, especially bees, are being the most frequent pollinators. Many native Neotropical plants are frequently visited by the invasive honeybee (Apis mellifera), but its role in the pollination of these plants has been little investigated. We assessed the contribution of various floral visitors
Acta Bot. Bras.. Publicado em: 02/07/2018
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7. Nectar dynamics and reproductive biology of Passiflora actinia Hook. (Passifloraceae) in Araucaria Forest
ABSTRACT Nectar production has an important role in pollinator attraction and successful fruit production in many self-incompatible angiosperm groups. The reproductive biology of Passiflora actinia was studied here and related to nectar dynamics. Passiflora actinia presented a temporal segregation of male and female functions at the beginning of anthesis. Du
Acta Bot. Bras.. Publicado em: 02/07/2018
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8. Pollination biology of melittophilous legume tree species in the Atlantic Forest in Southeast Brazil
ABSTRACT This study describes the floral phenology and morphology, reproductive biology and pollinators for eight legume tree species, Schizolobium parahyba, Senna macranthera, and Senna multijuga (Caesalpinioideae), as well as Andira fraxinifolia, Lonchocarpus cultratus, Pterocarpus violaceus, Swartzia oblata, and S. simplex (Papilionoideae), in the Atlanti
Acta Bot. Bras.. Publicado em: 02/07/2018
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9. Resupinate Dimorphy, a novel pollination strategy in two-lipped flowers of Eplingiella (Lamiaceae)
ABSTRACT This work provides a summary of the typical floral structure of subtribe Hyptidinae (Lamiaceae), in which both style and stamens are declinate within or near the concave anterior corolla lobe. Cross-pollination is facilitated by protandry, acting in conjunction with the explosive release of the stamens and pollen. In contrast, we report that in the
Acta Bot. Bras.. Publicado em: 13/03/2017
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10. The efficiency of bees in pollinating ephemeral flowers of Jacquemontia bracteosa (Convolvulaceae)
ABSTRACT The family Convolvulaceae is widely distributed in tropical regions, mainly in open areas. Convolvulaceae flowers are characterized mainly by being beautiful and ephemeral, attracting many flower visitors that belong to different taxonomic groups. This work aimed to investigate the interactions between insects and flowers of Jacquemontia bracteosa (
Iheringia, Sér. Zool.. Publicado em: 20/10/2016
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11. The reproductive biology of the early-divergent genus Anaxagorea (Annonaceae), and its significance for the evolutionary development of the family
ABSTRACT Data of six studied Neotropical Anaxagorea species are analyzed and discussed with respect to the population structure, flowering phenology, flower morphology, anthesis, scent emission, thermogenesis, floral visitors, breeding system, fruit-set and seed dispersal. The probably reason for the patchy distribution of small populations of Anaxagorea spe
Acta Bot. Bras.. Publicado em: 15/03/2016
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12. Bee assemblage in habitats associated with Brassica napus L.
ABSTRACTAssessments in agricultural crops indicate that alterations in the landscape adjacent to the crops can result in reduced productivity due to loss or low abundance of pollinating agents. In the canola crop, production is partially dependent on insect pollination. Therefore, knowledge of the faunal diversity within and near crop fields is key for the m
Rev. Bras. entomol.. Publicado em: 2015-09