Pollinators
Mostrando 13-24 de 180 artigos, teses e dissertações.
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13. Bees Diversity on Flowers of Eremanthus spp. (Asteraceae)
ABSTRACT Bees are considered important pollinators due to their fidelity to plants, enabling the maintenance of gene flow between plant species. The objective of this study was to recognize the visit of bees in two Candeia species, Eremanthus erythropappus and Eremanthus incanus (Asteraceae), as well as to analyze the pollen content carried by bees in a rege
Floresta Ambient.. Publicado em: 29/08/2019
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14. How pollinator visits are affected by flower damage and ants presence in Ipomoea carnea subs. fistulosa (Martius and Choise) (Convolvulaceae)?
Resumo Este trabalho teve por objetivo avaliar o efeito da florivoria e do patrulhamento de formigas nos NEFs - nectários extraflorais sobre a frequência dos visitantes florais, utilizando a espécie Ipomoea carnea subs. fistulosa (Martius e Choise), em uma área de Caatinga. Os atributos florais da espécie foram caracterizados. Foram avaliados o efeito
Braz. J. Biol.. Publicado em: 02/05/2019
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15. Pollination and quality of seeds and plantlets of Eugenia uniflora L.
RESUMO Este trabalho avaliou o efeito da polinização na qualidade de sementes e mudas de Eugenia uniflora L., assim como na capacidade de regeneração das sementes. Doze indivíduos tiveram sua fenologia e seus visitantes florais acompanhados. Flores recém-abertas foram submetidas aos tratamentos de autopolinização (AP), polinização cruzada (PC) e co
Hoehnea. Publicado em: 04/04/2019
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16. Bioactivity of essential oils from Artemisia against Diaphania hyalinata and its selectivity to beneficial insects
ABSTRACT: The demand for effective insecticides in pest control with low toxicity to the non-target organisms, such as natural enemies and pollinators, is increasing steadily. A good alternative for synthetic insecticides is natural compounds, including essential oils (EO). This work assessed toxicity of essential oils extracted from Artemisia annua, A. absi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
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17. Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern
ABSTRACT Hummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators. Considering the specialization of hummingbird-pollinated bromeliads, we expect a close relationship between nectar ecophysiology and the needs of the main pollinators. In this sense, we studied the n
Acta Bot. Bras.. Publicado em: 15/09/2018
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18. Breeding system and pollination of Pleroma trichopodum DC. (Melastomataceae): a potential species for the restoration of Atlantic Forest in southern Brazil
ABSTRACT Plant-pollinator interactions and their reproductive implications are of central importance to the organization of plant populations and communities in restoration areas. We studied the breeding system and flower visitors of Pleroma trichopodum, a pioneer species of the Atlantic Forest. We attempted to answer three questions: (1) Is P. trichopodum d
Acta Bot. Bras.. Publicado em: 30/07/2018
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19. 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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20. 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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21. 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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22. Pollination efficiency on Ipomoea bahiensis (Convolvulaceae): morphological and behavioural aspects of floral visitors
ABSTRACT: Pollination depends on morphological and behavioural adjustments between visitors and plants. Some plant species as Ipomoea bahiensis (Convolvulaceae) provide nectar and pollen to visitors and occur in anthropic areas, therefore becoming an important source of resources for the maintenance of native pollinating insects. However, what is the efficie
Iheringia, Sér. Zool.. Publicado em: 11/06/2018
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23. Floral resins of Philodendron adamantinum (Araceae): secretion, release and synchrony with pollinators
ABSTRACT Philodendron is the only genus of Araceae in which resin release occurs in the inflorescence. The resinous secretion adheres to the smooth body surface of the pollinating scarab beetles and allows attachment of pollen grains, making its transport possible. In order to understand the process of resin synthesis and release to the external environment,
Acta Bot. Bras.. Publicado em: 04/06/2018
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24. Functional specialization and phenotypic generalization in the pollination system of an epiphytic cactus
ABSTRACT Plant-pollinator interactions range from obligatory specialists to facultative generalists, and floral morphology and pollination system may not match completely. The floral biology, reproductive system and floral visitors of a species of the tribe Rhipsalideae were investigated with a focus on the consistency between the pollination system and the
Acta Bot. Bras.. Publicado em: 19/03/2018