Results 361 to 370 of about 125,543 (397)
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1986
In 1609 Charles Butler engagingly described honeybees as ‘summer birds’ because each year colonies of bees begin afresh the founding of nests or greater expansions of combs in an old one. This knowledge is contained in mediaeval calendars and probably reaches back into prehistory.
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In 1609 Charles Butler engagingly described honeybees as ‘summer birds’ because each year colonies of bees begin afresh the founding of nests or greater expansions of combs in an old one. This knowledge is contained in mediaeval calendars and probably reaches back into prehistory.
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Nectar Production in Abutilon I. Movement of Nectar Through the Cuticle
Australian Journal of Biological Sciences, 1971Observations by light microscopy of the process of exudation of nectar from the nectary hairs of Abutilon show that the nectar passes through the relatively impermeable cuticle in discrete droplets at regular intervals. From the observations it is concluded that there are pores through the cuticle at the hair tips which act as valves to produce these ...
FV Mercer, Nele Findlay
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Nectar production and presentation
2007Nectar secretion is complicated to study from the ultrastructural point of view because it is a dynamic process involving many tissues simultaneously. Study may also be affected by artefacts created by chemical fixation procedures, although this problem can be overcome by freeze-drying and freeze substitution techniques (Zhu & Hu, 2002; Stpiczyńska et
PACINI E., NEPI M.
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Nectar uptake rates and optimal nectar concentrations of two butterfly species [PDF]
Oecologia, 1985 The relationship between sucrose concentration of nectar and volume uptake rate by the butterflies Agraulis vanillae (Nymphalidae) and Phoebis sennae (Pieridae) was examined. Recent theoretical models simulating feeding energetics of nectarivores have assumed that this volume uptake rate is produced by a constant but undetermined pressure drop (the ...
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FEMS Microbiology Ecology, 2018
Floral nectar represents an ephemeral habitat that is restricted in time and space to zoophilous flowering vegetation. To survive in these habitats, nectar-inhabiting microorganisms rely on animal vectors to disperse from one flower to the next. However,
M. I. Pozo +6 more
semanticscholar +1 more source
Floral nectar represents an ephemeral habitat that is restricted in time and space to zoophilous flowering vegetation. To survive in these habitats, nectar-inhabiting microorganisms rely on animal vectors to disperse from one flower to the next. However,
M. I. Pozo +6 more
semanticscholar +1 more source
Bacterial communities in floral nectar
Environmental Microbiology Reports, 2011SummaryFloral nectar is regarded as the most important reward available to animal‐pollinated plants to attract pollinators. Despite the vast amount of publications on nectar properties, the role of nectar as a natural bacterial habitat is yet unexplored. To gain a better understanding of bacterial communities inhabiting floral nectar, culture‐dependent
Ido Izhaki +3 more
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2008
M. Fouquet held the stirrup of the King, who, having dismounted, bowed most graciously, and more graciously still held out his hand to him, which Fouquet, in spite of a slight resistance on the King’s part, carried respectfully to his lips.
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M. Fouquet held the stirrup of the King, who, having dismounted, bowed most graciously, and more graciously still held out his hand to him, which Fouquet, in spite of a slight resistance on the King’s part, carried respectfully to his lips.
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Plant protection product residues in plant pollen and nectar: A review of current knowledge
Environmental Research, 2020Ruth Kelly, Blanaid White, Jane C. Stout
exaly